Minor-planet moon

A minor-planet moon is an astronomical object that orbits a minor planet as its natural satellite. As of January 2022, there are 457 minor planets known or suspected to have moons.[1] Discoveries of minor-planet moons (and binary objects, in general) are important because the determination of their orbits provides estimates on the mass and density of the primary, allowing insights into their physical properties that are generally not otherwise accessible.[2]

  • Top: 243 Ida and its moon Dactyl as imaged by Galileo in 1993.
  • Middle: Three radar images of 66391 Moshup. The 'streaks' on the image are the moon's trail as it moved while the images were created.
  • Bottom: Animation of (357439) 2004 BL86 and its moon (left). Animation of (136617) 1994 CC, a trinary asteroid with two moons (right).

Several of the moons are quite large compared to their primaries: 90 Antiope, Mors–Somnus and Sila–Nunam (95%), Patroclus–Menoetius, Altjira and Lempo–Hiisi (90%, with Lempo–Paha at 50%). The largest known minor-planet moon in absolute size is Pluto's largest moon Charon, which itself has about half the diameter of Pluto.

The first modern era mention of the possibility of an asteroid satellite was in connection with an occultation of the bright star Gamma Ceti by the asteroid 6 Hebe in 1977. The observer, amateur astronomer Paul D. Maley, detected an unmistakable 0.5 second disappearance of this naked eye star from a site near Victoria, Texas. Many hours later, several observations were reported in Mexico attributed to the occultation by 6 Hebe itself. Although not confirmed, this documents the first formally documented case of a suspected companion of an asteroid.[3]

There are also several known ring systems around distant objects (see: rings of Chariklo and Chiron).

Terminology

In addition to the terms satellite and moon, the term "binary" (binary minor planet) is sometimes used for minor planets with moons, and "triple" for minor planets with two moons. If one object is much bigger it can be referred to as the primary and its companion as secondary. The term double asteroid is sometimes used for systems in which the asteroid and its moon are roughly the same size, while binary tends to be used independently from the relative sizes of the components. When binary minor planets are similar in size, the Minor Planet Center (MPC) refers to them as "binary companions" instead of referring to the smaller body as a satellite.[4] A good example of a true binary is the 90 Antiope system, identified in August 2000.[5] Small satellites are often referred to as moonlets.[2][6]

Discovery milestones

Prior to the era of the Hubble Space Telescope and space probes reaching the outer Solar System, attempts to detect satellites around asteroids were limited to optical observations from Earth. For example, in 1978, stellar occultation observations were claimed as evidence of a satellite for the asteroid 532 Herculina.[7] However, later more-detailed imaging by the Hubble Telescope did not reveal a satellite, and the current consensus is that Herculina does not have a significant satellite.[8] There were other similar reports of asteroids having companions (usually referred to as satellites) in the following years. A letter by astronomer Thomas Hamilton in the Sky & Telescope magazine at this time pointed to apparently simultaneous impact craters on Earth (for example, the Clearwater Lakes in Quebec), suggesting that these craters were caused by pairs of gravitationally bound objects.[9]

Also in 1978, Pluto's largest moon Charon was discovered; however, at the time Pluto was still considered to be one of the major planets.

In 1993, the first asteroid moon was confirmed when the Galileo probe discovered the small Dactyl orbiting 243 Ida in the asteroid belt. The second was discovered around 45 Eugenia in 1998.[10] In 2001, 617 Patroclus and its same-sized companion Menoetius became the first known binary asteroids in the Jupiter trojans.[11] The first trans-Neptunian binary after Pluto–Charon, 1998 WW31, was optically resolved in 2002.[12]

Multiple systems

In 2005, the asteroid 87 Sylvia was discovered to have two satellites, making it the first known triple system (also called trinary minor planets).[13] This was followed by the discovery of a second moon orbiting 45 Eugenia.[14] Also in 2005, the dwarf planet Haumea was discovered to have two moons, making it the second trans-Neptunian object after Pluto known to have more than one moon.[15] Additionally, 216 Kleopatra[16] and 93 Minerva[17] were discovered to be trinary asteroids in 2008 and 2009 respectively. Since the first few triple minor planets were discovered, more continue to be discovered at a rate of about one a year. Most recently discovered were two moons orbiting large near-earth asteroid 3122 Florence, bringing the number of known trinary systems in the Solar System up to 16 (including the Pluto system).

The following table lists all satellites of triple systems (or higher multiplicities) chronologically by their discovery date, starting with Charon, discovered in 1978. The highest known multiplicities are for Pluto (a sextuple system) and 130 Elektra (a quadruple system).

Parent body Minor-planet moon
Designation Orbital class Designation Discovery
date		 Announcement
date		 Announcement
of trinary
134340 PlutoTNOCharon1978/06/221978/07/072005/10/31
45 EugeniaAsteroid beltPetit-Prince1998/11/011999/03/202007/03/07
87 SylviaRomulus2001/02/182005/08/112005/08/11
107 CamillaS/2001 (107) 12001/03/012001/03/192016/08/07
47171 LempoTNOPaha2001/12/082002/01/102009/10/??
3749 BalamAsteroid beltS/2002 (3749) 12002/02/082002/02/132008/03/12
130 ElektraS/2003 (130) 12003/08/152003/08/172014/12/16
45 EugeniaS/2004 (45) 12004/02/142007/03/072007/03/07
87 SylviaRemus2004/08/092005/08/112005/08/11
136108 HaumeaTNOHiʻiaka2005/01/262008/09/172008/09/17
134340 PlutoNix2005/05/152005/10/312005/10/31
Hydra
136108 HaumeaNamaka2005/06/302008/09/172008/09/17
3749 BalamAsteroid beltS/2007 (3749) 12007/07/152008/03/122008/03/12
(153591) 2001 SN263AmorBeta (unofficial)2008/02/122008/02/122008/02/12
Gamma (unofficial)
216 KleopatraAsteroid beltAlexhelios2008/09/192011/02/182011/02/18
Cleoselene
2577 LitvaMars-crosserS/2009 (2577) 12009/02/282009/03/112013/12/22
(136617) 1994 CCApolloBeta (unofficial)2009/06/122009/06/192009/06/19
Gamma (unofficial)
47171 LempoTNOHiisi2009/10/??2009/10/??2009/10/??
93 MinervaAsteroid beltAegis2009/08/162013/12/172013/12/17
Gorgoneion
134340 PlutoTNOKerberos2011/06/282013/07/022005/10/31
2577 LitvaMars-crosserS/2012 (2577) 12012/06/222013/12/222013/12/22
134340 PlutoTNOStyx2012/06/262013/07/022005/10/31
130 ElektraAsteroid beltS/2014 (130) 12014/12/062014/12/162014/12/16
4666 DietzS/2015 (3666) 12015/09/022015/10/??2018/07/20
S/2015 (3666) 22015/09/022018/07/202018/07/20
107 CamillaS/2016 (107) 12015/05/292016/08/072016/08/07
6186 ZenonS/2017 (6186) 12017/01/012017/01/142017/01/14
S/2017 (6186) 2
3122 FlorenceAmorS/2017 (3122) 12017/08/292017/09/012017/09/01
S/2017 (3122) 2
130 ElektraAsteroid beltS/2014 (130) 22014/12/092021/11/062014/12/16

Commonality

The data about the populations of binary objects are still patchy. In addition to the inevitable observational bias (dependence on the distance from Earth, size, albedo and separation of the components) the frequency appears to be different among different categories of objects. Among asteroids, an estimated 2% would have satellites. Among trans-Neptunian objects (TNOs), an estimated 11% are thought to be binary or multiple objects, and the majority of the large TNOs have at least one satellite, including all four IAU-listed dwarf planets.

More than 50 binaries are known in each of the main groupings: near-Earth asteroids, belt asteroids, and trans-Neptunian objects, not including numerous claims based solely on light-curve variation.

Two binaries have been found so far among centaurs with semi-major axes smaller than Neptune.[18] Both are double ring systems around 2060 Chiron and 10199 Chariklo, discovered in 1994–2011 and 2013 respectively.

Origin

The origin of minor-planet moons is not currently known with certainty, and a variety of theories exist. A widely accepted theory is that minor-planet moons are formed from debris knocked off the primary by an impact. Other pairings may be formed when a small object is captured by the gravity of a larger one.

Formation by collision is constrained by the angular momentum of the components, i.e. by the masses and their separation. Close binaries fit this model (e.g. Pluto–Charon). Distant binaries however, with components of comparable size, are unlikely to have followed this scenario, unless considerable mass has been lost in the event.

The distances of the components for the known binaries vary from a few hundreds of kilometres (243 Ida, 3749 Balam) to more than 3000 km (379 Huenna) for the asteroids. Among TNOs, the known separations vary from 3,000 to 50,000 km.[18]

Populations and classes

What is "typical" for a binary system tends to depend on its location in the Solar System (presumably because of different modes of origin and lifetimes of such systems in different populations of minor planets).[19]

  • Among near-Earth asteroids, satellites tend to orbit at distances of the order of 3–7 primary radii, and have diameters two to several times smaller than the primary. Since these binaries are all inner-planet crossers, it is thought that tidal stresses that occurred when the parent object passed close to a planet may be responsible for the formation of many of them, although collisions are thought to also be a factor in the creation of these satellites.
  • Among main-belt asteroids, the satellites are usually much smaller than the primary (a notable exception being 90 Antiope), and orbit around 10 primary radii away. Many of the binary systems here are members of asteroid families, and a good proportion of satellites are expected to be fragments of a parent body whose disruption after an asteroid collision produced both the primary and satellite.
The eight largest TNOs with moons (Pluto, Haumea, Makemake, Eris, Quaoar, Gonggong, Orcus and Salacia), with the Earth to scale. Gonggong is written as its provisional designation, 2007 OR10.
  • Among trans-Neptunian objects, it is common for the two orbiting components to be of comparable size, and for the semi-major axis of their orbits to be much larger − about 100 to 1000 primary radii. A significant proportion of these binaries are expected to be primordial.
    • Pluto has five known moons. Its largest moon Charon is more than half the size of Pluto itself, and large enough to orbit a point outside Pluto's surface. In fact, each orbits the common barycenter between them, with Pluto's orbit entirely enclosed by Charon's; thus they form a binary system informally referred to as a double dwarf planet. Pluto's four other moons, Nix, Hydra, Kerberos, and Styx, are far smaller and orbit the Pluto–Charon system.
    • Haumea has two moons with radii estimated around 155 km (Hiʻiaka) and 85 km (Namaka).
    • Makemake has one known moon, S/2015 (136472) 1, estimated to be some 160 kilometers (100 mi) in diameter.
    • 47171 Lempo is a unique trans-Neptunian triple system: Lempo and its moon of roughly equal mass, Hiisi, form a close-proximity binary, separated by roughly 867 km. A second moon, Paha, orbits the Lempo–Hiisi binary at about 7411 km.
    • Eris has one known moon, Dysnomia. Its radius, based on its brightness, is estimated to be roughly between 150 and 350 km.[20]

List

As of January 2022, there are 457 minor planets (systems) with 477 known companions.[1] The following table is a listing of the total number of these systems by orbital class:

# of SystemsOrbital classList by classMultiple satellites
86Near-Earth objectsgo to listThree systems with two satellites: 3122 Florence, (136617) 1994 CC, and (153591) 2001 SN263.
31Mars-crossing asteroidsgo to listOne system with two satellites: 2577 Litva.
212Main-belt asteroidsgo to listEight systems with two satellites: 45 Eugenia, 87 Sylvia, 93 Minerva, 107 Camilla, 216 Kleopatra, 3749 Balam, 4666 Dietz, 6186 Zenon; and one quadruple system with three satellites: 130 Elektra.
6Jupiter trojansgo to list—
122Trans-Neptunian objectsgo to listTwo systems with two satellites: 47171 Lempo and 136108 Haumea; one system with five satellites: 134340 Pluto.[1][21]

Near-Earth objects

This is a list of near-Earth asteroids with companions.[1] Candidate binaries with an unconfirmed status are displayed on a dark background.[22] For an overview, see summary and introduction.

System Primary Secondary Refs
Designation Class De
(km)		 s/p-ratio YOD Dp
(km)		 RTp
(hours)		 Designation YOD Ds
(km)		 RTs
(hours)		 as
(km)		 Ps
(hours)
1862 Apollo APO 1.55 0.052 1932 1.55 3.065 S/2005 (1862) 1 2005 0.08 – 3.75 27.36 BIN JPL LoMP LCDB
1866 Sisyphus APO 8.48 0.1 1972 8.44 2.3909 S/1985 (1866) 1 1985 0.84 – 19 27.12 BIN JPL LoMP LCDB
3122 Florence AMO 4.40 0.04
0.04		 1981 4.4 2.3581 S/2017 (3122) 1 2017 0.2 – 4.6 7.2 BIN JPL LoMP LCDB
S/2017 (3122) 2 2017 0.3 – 9.8 24
3671 Dionysus AMO 1.46 0.2 1984 1.43 2.705 S/1997 (3671) 1 1997 0.29 – 3.4 27.744 BIN JPL LoMP LCDB
5143 Heracles APO 3.65 0.167 1991 3.6 2.706 S/2011 (5143) 1 2011 0.6 – 4 15.5 BIN JPL LoMP LCDB
5381 Sekhmet ATE 1.04 0.3 1991 1 2.7 S/2003 (5381) 1 2003 0.3 10 1.54 12.5 BIN JPL LoMP LCDB
(5646) 1990 TR AMO 2.72 0.18+ 1990 2.68 3.1999 S/2012 (5646) 1 2012 0.48 – 5.1 19.4712 BIN JPL LoMP LCDB
7088 Ishtar AMO 1.51 0.42 1992 1.39 2.679 S/2006 (7088) 1 2006 0.33 – 2.8 20.6496 BIN JPL LoMP LCDB
(7888) 1993 UC APO 2.72 – 1993 2.72 2.34 S/2013 (7888) 1 2013 – – 7.7 35.04 BIN JPL LoMP LCDB
15745 Yuliya AMO 1.2 0.46+ 1991 0.61+ 3.2495 S/2018 (15745) 1 2018 0.28+ – – 11.735 BIN JPL LoMP LCDB
(31345) 1998 PG AMO 0.94 0.3 1998 0.9 2.51620 S/2001 (31345) 1 2001 0.27 – 1.4 14.0064 BIN JPL LoMP LCDB
(31346) 1998 PB1 AMO 1.26 0.38+ 1998 1.18 2.7358 S/2012 (31346) 1 2021 0.45+ – 4.6 55.39 BIN JPL
LoMP LCDB
(35107) 1991 VH APO 1.12 0.4 1991 1.04 2.624 S/1997 (35107) 1 1997 0.42 – 3.26 32.64 BIN JPL LoMP LCDB
(53110) 1999 AR7 AMO 1.5 0.41+ 1999 1.4 2.7375 S/2015 (53110) 1 2015 0.6+ – 3.8 31.32 BIN JPL LoMP LCDB
65803 Didymos AMO 0.77 0.22 1996 0.75 2.259 Dimorphos
S/2003 (65803) 1		 2003 0.17 – 1.18 11.8992 BIN JPL LoMP LCDB
(66063) 1998 RO1 ATE 0.89 0.48 1998 0.8 2.492 S/2002 (66063) 1 2002 0.38 – 1.2 14.5392 BIN JPL LoMP LCDB
66391 Moshup ATE 1.39 0.341 1999 1.317 2.7645 Squannit
S/2001 (66391) 1		 2001 0.451 17.4 2.548 17.4216 BIN JPL LoMP LCDB
(68063) 2000 YJ66 AMO 2.3 – 2000 2.3 2.1102 S/2014 (68063) 1 2014 – – 3.8 15.7 BIN JPL LoMP LCDB
69230 Hermes APO 0.81 0.9 1937 0.6 13.894 S/2003 (69230) 1 2003 0.54 13.892 1.1 13.8936 BIN JPL LoMP LCDB
(85275) 1994 LY AMO 2.51 0.24+ 1994 2.44 2.696 S/2020 (85275) 1 2020 0.59+ – 4.2 16.6238 BIN JPL LoMP LCDB
(85938) 1999 DJ4 APO 0.48 0.5 1999 0.43 2.514 S/2004 (85938) 1 2004 0.21 – 0.8 17.7312 BIN JPL LoMP LCDB
(88710) 2001 SL9 APO 1 0.28 2001 0.96 2.4 S/2001 (88710) 1 2001 0.2 – 1.6 16.399 BIN JPL LoMP LCDB
(136617) 1994 CC APO 0.64 0.182
0.129		 1994 0.62 2.3886 Beta
S/2009 (136617) 1		 2009 0.113 – 1.729 29.832 BIN JPL LoMP LCDB
Gamma
S/2009 (136617) 2		 2009 0.08 – 6.130 201.024
(136993) 1998 ST49 APO 0.69 0.109 1998 0.69 2.302 S/2012 (136993) 1 2012 0.08 – – – BIN JPL LoMP LCDB
(137170) 1999 HF1 ATE 3.73 0.23 1999 3.64 2.319 S/1999 (137170) 1 1999 0.84 – 7.3 14.01696 BIN JPL LoMP LCDB
(138095) 2000 DK79 AMO 2.18 – 2000 2.18 4.243 S/2013 (138095) 1 2013 – – – – BIN JPL LoMP LCDB
(143649) 2003 QQ47 APO 0.995 0.33 2003 0.94 2.6446 S/2021 (143649) 1 2021 0.31 13.065 1.4 13.07 BIN JPL
LoMP LCDB
(152931) 2000 EA107 ATE 1.65 – 2000 1.65 4.1367 S/2019 (152931) 1 2019 – 16.079 – – BIN JPL
LoMP LCDB
(153591) 2001 SN263 AMO 2.85 0.408
0.177		 2001 2.6 3.425 Beta
S/2008 (153591) 1		 2008 1.06 – 16.633 149.4 BIN JPL LoMP LCDB
Gamma
S/2008 (153591) 2		 2008 0.46 – 3.804 16.464
(153958) 2002 AM31 APO 0.46 0.25 2002 0.45 2.817 S/2012 (153958) 1 2012 0.11 – 1.5 26.304 BIN JPL LoMP LCDB
(162000) 1990 OS APO 0.3 0.167 1990 0.3 2.536 S/2003 (162000) 1 2003 0.05 – 0.6 21 BIN JPL LoMP LCDB
(162483) 2000 PJ5 ATE 0.62 0.5 2000 0.55 2.642 S/2005 (162483) 1 2005 0.28 – 1.05 14.16 BIN JPL LoMP LCDB
163693 Atira ATI 4.9 0.21 2003 4.8 2.9745 S/2017 (163693) 1 2017 1 – 6 15.504 BIN JPL LoMP LCDB
(164121) 2003 YT1 APO 1.12 0.191 2003 1.1 2.343 S/2004 (164121) 1 2004 0.21 – 3.93 36.696 BIN JPL LoMP LCDB
(175706) 1996 FG3 APO 1.69 0.28 1996 1.69 3.595195 S/1998 (175706) 1 1998 0.49 16.15 3 16.1508 BIN JPL LoMP LCDB
(185851) 2000 DP107 APO 0.85 0.41 2000 0.8 2.774 S/2000 (185851) 1 2000 0.3 – 2.62 42.192 BIN JPL LoMP LCDB
(190166) 2005 UP156 AMO 1.05 – 2005 1.045 40.542 S/2017 (190166) 1 2017 – – – – BIN JPL LoMP LCDB
(190208) 2006 AQ AMO 1.06 – 2006 1.06 182 S/2015 (190208) 1 2015 – 2.62 – – BIN JPL LoMP LCDB
(226514) 2003 UX34 APO 0.28 0.5 2003 0.25 – S/2017 (226514) 1 2017 0.1 – – – BIN JPL LoMP LCDB
(250162) 2002 TY57 AMO 0.38 0.18+ 2002 0.37 2.5001 S/2018 (250162) 1 2018 0.07+ – 0.5 10.76 BIN JPL LoMP LCDB
(276049) 2002 CE26 APO 3.46 0.087 2002 3.46 3.2931 S/2004 (276049) 1 2004 0.3 – 4.7 15.6 BIN JPL LoMP LCDB
(285263) 1998 QE2 AMO 3.09 0.25 1998 3.2 4.751 S/2013 (285263) 1 2013 0.8 1.3046 6.212 31.3104 BIN JPL LoMP LCDB
(285571) 2000 PQ9 AMO 1 – 2000 1 – S/2021 (285571) 1 2021 – – – – BIN JPL
LoMP LCDB
(310560) 2001 QL142 APO 0.92 – 2001 0.92 – S/2017 (310560) 1 2017 – – – – BIN JPL LoMP LCDB
(311066) 2004 DC APO 0.37 0.2 2004 0.36 2.6 S/2006 (311066) 1 2006 0.07 7 0.75 23.04 BIN JPL LoMP LCDB
(326732) 2003 HB6 AMO 0.95 0.23 2003 0.93 3.463 S/2021 (326732) 1 2021 0.21 22.92 2 22.92 BIN JPL
LoMP LCDB
(348400) 2005 JF21 AMO 0.6 0.18 2005 0.6 2.4144 S/2015 (348400) 1 2015 0.11 – 0.9 14.736 BIN JPL LoMP LCDB
(357439) 2004 BL86 APO 0.33 0.21 2004 0.32 2.6 S/2015 (357439) 1 2015 0.07 – 0.5 14.4 BIN JPL LoMP LCDB
(363027) 1998 ST27 ATE 0.81 0.15 1998 0.8 3- S/2001 (363027) 1 2001 0.12 <6 4.5 98.4 BIN JPL LoMP LCDB
(363067) 2000 CO101 APO 0.62 0.065 2000 0.62 5.12 S/2009 (363067) 1 2009 0.04 – 0.61 7.2 BIN JPL LoMP LCDB
(363599) 2004 FG11 APO 0.17 0.533 2004 0.15 4- S/2012 (363599) 1 2012 0.08- – 0.25 20 BIN JPL LoMP LCDB
(374851) 2006 VV2 APO 1.82 0.28 2006 1.06 2.41 S/2007 (374851) 1 2007 0.3+ – 1.5 5.52 BIN JPL LoMP LCDB
(385186) 1994 AW1 AMO 1.04 0.49 1994 0.94 2.519 S/1994 (385186) 1 1994 0.46 – 2 22.3296 BIN JPL LoMP LCDB
(399307) 1991 RJ2 AMO 0.55 0.47+ 1991 0.5 3.4907 S/2014 (399307) 1 2014 0.24 15.917 0.86 15.91704 BIN JPL LoMP LCDB
(399774) 2005 NB7 APO 0.54 0.32+ 2005 0.5 3.4883 S/2008 (399774) 1 2008 0.2 15.267 0.6 15.2808 BIN JPL LoMP LCDB
(410777) 2009 FD APO 0.17 0.6 2009 0.15 4 S/2015 (410777) 1 2015 0.09 – 0.25 14.4 BIN JPL LoMP LCDB
(450894) 2008 BT18 APO 0.63 0.333 2008 0.6 2.726 S/2008 (450894) 1 2008 0.2+ – 1.5 28.8 BIN JPL LoMP LCDB
(452561) 2005 AB AMO 1.95 0.24 2005 1.9+ 3.339 S/2005 (2005 AB) 1 2005 0.46 – 3.4 17.9304 BIN JPL LoMP LCDB
(461852) 2006 GY2 APO 0.41 0.2 2006 0.4 2.27 S/2006 (461852) 1 2006 0.08 – 0.5 11.7 BIN JPL LoMP LCDB
(481532) 2007 LE APO 0.53 0.36 2007 0.5 2.603 S/2012 (461852) 1 2012 0.18 – 1.4 33.504 BIN JPL LoMP LCDB
(488453) 1994 XD APO 0.62 0.25 1994 0.6 2.736 S/2005 (488453) 1 2005 0.15+ – 0.6 17.976 BIN JPL LoMP LCDB
(489486) 2007 GS3 APO 1.067 0.46 2007 0.97 3.497 S/2019 (489486) 1 2019 0.45 41.36 3.2 41.36 BIN JPL LoMP LCDB
(494658) 2000 UG11 APO 0.29 0.5 2000 0.26 4.44 S/2000 (494658) 1 2000 0.13 – 0.426 18.4 BIN JPL LoMP LCDB
(523625) 2008 DG17 APO 0.38 – 2008 0.38 – S/2013 (523625) 1 2013 – – – – BIN JPL LoMP LCDB
(523775) 2014 YB35 APO 0.34 0.5- 2014 0.3 – S/2015 (523775) 1 2015 0.15- – – – BIN JPL LoMP LCDB
1994 CJ1 APO 0.21- 1 1994 0.15- 30 S/2014 (1999 CJ1) 1 2014 0.15- – 0.525 30 BIN JPL LCDB
1999 RM45 APO 0.181 0.45 1999 0.165 3.0697 S/2021 (1999 RM45) 1 2021 0.074 - 0.29 16.4448 BIN JPL LCDB
2002 BM26 AMO 0.61 0.167 2002 0.6 2.7 S/2002 (2002 BM26) 1 2002 0.1 – 1.4 25.8 BIN JPL LCDB
2002 KK8 AMO 0.51 0.2 2002 0.5 – S/2002 (2002 KK8) 1 2002 0.1 – – – BIN JPL LCDB
2003 SS84 APO 0.13 0.5 2003 0.12 – S/2003 (2003 SS84) 1 2003 0.06 – 0.27 24 BIN JPL LCDB
2005 YQ96 ATE 0.27 – 2005 0.27 rot. S/2014 (2005 YQ96) 1 2014 – – – – BIN JPL LCDB
2007 DT103 APO 0.31 0.267 2007 0.3 2.703 S/2007 (2007 DT103) 1 2007 0.08+ – 0.45 13.44 BIN JPL LCDB
2013 PY6 AMO 0.53 0.24 2013 0.52 3.6246 S/2020 (2013 PY6) 1 2020 0.12 - 1.2 27.312 BIN JPL LCDB
2013 WT44 APO 1.32 – 2013 1 2.8849 S/2014 (2013 WT44) 1 2014 – – – – BIN JPL LCDB
2014 WZ120 APO 0.3 0.32+ 2014 0.3 3.361 S/2014 (2014 WZ120) 1 2014 0.1 – 0.5 13.665 BIN JPL LCDB
2015 TD144 APO 0.1 – 2015 0.1 – S/2015 (2015 TD144) 1 2015 – – – – BIN JPL LCDB
2016 AZ8 APO 0.47 0.43 2016 0.42 7- S/2019 (2016 AZ8) 1 2019 0.18- <40 0.42+ 7.2 BIN JPL LCDB
2017 RV1 APO 0.3 – 2017 0.3 – S/2017 (2017 RV1) 1 2017 – – – – BIN JPL LCDB
2017 YE5 APO 1.3 1 2017 0.9 20.6 S/2018 (2017 YE5) 1 2018 0.9 – 2.4 22.08 BIN JPL LCDB
2018 EB APO 0.24 0.167 2018 0.24 1.2 S/2018 (2018 EB) 1 2018 0.04 – – – BIN JPL LCDB
2018 TF3 APO 0.28 0.23 2018 0.27 2.4398 S/2018 (2018 TF3) 1 2018 0.06 2.3498 0.35 10.512 BIN JPL LCDB
2020 AZ2 AMO 0.19 – 2020 0.19 – S/2020 (2020 AZ2) 1 2020 – – – – BIN JPL LCDB
2020 BX12 APO 0.18 0.42 2020 0.165 2.8 S/2020 (2020 BX12) 1 2020 0.07 <49 0.36 47.04 BIN JPL LCDB

Mars crossers

This is a list of Mars-crossing asteroids with companions.[1] Candidate binaries with an unconfirmed status are displayed on a dark background.[22] For an overview, see summary and introduction.

System Primary Secondary Refs
Designation Class De
(km)		 s/p-ratio YOD Dp
(km)		 RTp
(hours)		 Designation YOD Ds
(km)		 as
(km)		 Ps
(hours)
1139 Atami cls. 7.81 0.833 1929 6 27.45 S/2005 (1139) 1 2005 5 15+ 27.456 BIN JPL LoMP LCDB
1656 Suomi H 7.86 0.26+ 1942 7.61 2.5885 S/2020 (1656) 1 2020 1.98+ 30 57.92 BIN JPL LoMP LCDB
1727 Mette cls. 10.4 0.21 1965 10.18 2.98109 S/2013 (1727) 1 2013 2.14 21 20.99 BIN JPL LoMP LCDB
2044 Wirt cls. 6.66 0.25 1950 6.46 3.6898 S/2006 (2044) 1 2006 1.62 12 18.9696 BIN JPL LoMP LCDB
2449 Kenos cls. 6.2 0.23 1978 6 3.8481 S/2015 (2449) 1 2015 1.4 10 15.84 BIN JPL LoMP LCDB
2577 Litva cls. 4.4 0.35
0.3		 1975 4 2.813 S/2009 (2577) 1 2009 1.4 21 35.88 BIN JPL LoMP LCDB
S/2012 (2577) 1 2012 1.2 378 5136
3873 Roddy cls. 7.51 0.27 1984 7.25 2.47900 S/2012 (3873) 1 2012 1.96 14 19.24 BIN JPL LoMP LCDB
4435 Holt cls. 5.03 0.34+ 1983 4.76 2.867 S/2017 (4435) 1 2017 1.62+ 16 42.648 BIN JPL LoMP LCDB
5261 Eureka cls. 1.28 0.39+ 1990 1.19 2.6902 S/2011 (5261) 1 2011 0.46 2.1 16.9296 BIN JPL LoMP LCDB
(5407) 1992 AX cls. 3.98 0.2 1992 3.9 2.549 S/1997 (5407) 1 1997 0.78 5.8 13.5192 BIN JPL LoMP LCDB
7002 Bronshten cls. 3.12 0.24+ 1971 3.03 2.67025 S/2018 (7002) 1 2018 0.73+ 4.5 13.32 BIN JPL LoMP LCDB
7369 Gavrilin cls. 7.92 0.32+ 1975 7.54 49.12 S/2007 (7369) 1 2007 2.41 27 49.128 BIN JPL LoMP LCDB
8373 Stephengould unus. 5.48 0.27- 1992 5.29 4.435 S/2010 (8373) 1 2010 1.43 15 34.152 BIN JPL LoMP LCDB
12008 Kandrup cls. 4.2 0.75 1996 3.4 32.9034 S/2016 (12008) 1 2016 2.6 10 32.904 BIN JPL LoMP LCDB
13920 Montecorvino cls. 2.81 0.22+ 1985 2.81 2.20231 S/2020 (13920) 1 2020 - - 15.475 BIN JPL LoMP LCDB
(15700) 1987 QD cls. 4.15 0.31 1987 3.96 3.0586 S/2010 (15700) 1 2010 1.23 14 50.4 BIN JPL LoMP LCDB
(16635) 1993 QO cls. 4.77 0.27+ 1993 4.61 7.622 S/2007 (16635) 1 2007 1.24 12 32.256 BIN JPL LoMP LCDB
(23621) 1996 PA cls. 2.5 0.27+ 1996 2.4 2.6649 S/2017 (23621) 1 2017 0.65 5 20.60 BIN JPL LoMP LCDB
24495 Degroff cls. 3.5 – 2001 3.26 24.083 S/2017 (24495) 1 2017 – – 2.7375 BIN JPL LoMP LCDB
26074 Carlwirtz cls. 3.62 – 1977 3.62 2.4593 S/2013 (26074) 1 2013 – 6.1 16.1112 BIN JPL LoMP LCDB
26471 Tracybecker cls. 6.05 0.36 2000 5.69 2.687 S/2009 (26471) 1 2009 2.05 18 39.288 BIN JPL LoMP LCDB
(32039) 2000 JO23 cls. 4.15 0.32+ 2000 3.96 6.5979 S/2007 (32039) 1 2007 1.27 53 360 BIN JPL LoMP LCDB
(34706) 2001 OP83 cls. 3.62 0.28 2001 3.48 2.5644 S/2005 (34706) 1 2005 0.98 7 20.76 BIN JPL LoMP LCDB
(51356) 2000 RY76 cls. 3.3 0.21+ 2000 3.23 2.5572 S/2012 (51356) 1 2012 0.68 13 62.04 BIN JPL LoMP LCDB
(53432) 1999 UT55 cls. 2.62 0.23+ 1999 2.55 3.330 S/2013 (53432) 1 2013 0.59 4 14.1 BIN JPL LoMP LCDB
(54697) 2001 FA70 cls. 3.3 0.19+ 2001 3.2 2.7077 S/2016 (54697) 1 2016 0.6 – 16.2648 BIN JPL LoMP LCDB
(99913) 1997 CZ5 cls. 6.89 0.19 1997 6.77 2.83507 S/2010 (99913) 2010 1.29 11 14.6808 BIN JPL LoMP LCDB
(100015) 1989 SR7 cls. 2.4 0.35 1989 2.3 2.4172 S/2018 (100015) 1 2018 0.8 4.5 20.65 BIN JPL LoMP LCDB
(114319) 2002 XD58 cls. 2.62 – 2002 2.19 2.9649 S/2005 (114319) 1 2005 – – 7.954 BIN JPL LoMP LCDB
(218144) 2002 RL66 cls. 2.97 – 2002 – 587 S/2010 (218144) 1 2010 – – – BIN JPL LoMP LCDB

Main-belt asteroids

This is a list of main-belt asteroids with companions.[1] Candidate binaries with an unconfirmed status are displayed on a dark background.[22] For an overview, see summary and introduction.

System Primary Secondary Refs
Designation Class De
(km)		 s/p-ratio YOD Dp
(km)		 RTp
(hours)		 Designation YOD Ds
(km)		 as
(km)		 Ps
(hours)
22 Kalliope — 168.5 0.168 1852 166.2 4.1482 Linus
S/2001 (22) 1		 2001 28 1095 86.304 BIN JPL
LoMP LCDB
31 Euphrosyne EUP 267.08 0.025 1854 267.08 5.53 S/2019 (31) 1 2019 6.7 677 28.8 BIN JPL
LoMP LCDB
41 Daphne — 174 0.011 1856 174 5.9880 Peneius
S/2008 (41) 1		 2008 2- 443 26.4 BIN JPL
LoMP LCDB
45 Eugenia — 206 0.034
0.024		 1857 206 5.699 Petit-Prince
S/1998 (45) 1
(Eugenia I)		 1998 7 1164 113.18 BIN JPL
LoMP LCDB
S/2004 (45) 1
(Eugenia II)		 2004 5 611 43.03
87 Sylvia SYL 286 0.038
0.037		 1866 286 5.1836 Romulus
S/2001 (87)
(Sylvia I)		 2001 10.8 1351 87.696 BIN JPL
LoMP LCDB
Remus
S/2004 (87)
(Sylvia II)		 2004 10.6 701.6 32.952
90 Antiope THM 121 0.954 1866 87.8 16.505 S/2000 (90) 1 2000 87.8 171 16.505 BIN JPL
LoMP LCDB
93 Minerva GEF 141.6 0.028
0.021		 1867 141.6 5.9818 Aegis
S/2009 (93) 1
(Minerva I)		 2009 3.6 623.5 57.744 BIN JPL
LoMP LCDB
Gorgoneion
S/2009 (93) 2
(Minerva II)		 2009 3.2 375 26.7528
107 Camilla SYL 219.37 0.073
0.016		 1868 219.37 4.8439 S/2001 (107) 1 2001 16 1250 89.328 BIN JPL
LoMP LCDB
S/2016 (107) 1 2016 3.5 340 12
113 Amalthea FLO 50.1 – 1871 50.1 9.95 S/2017 (113) 1 2017 5 – – BIN JPL
LoMP LCDB
121 Hermione 7:4 190 0.171 1872 187 5.551 S/2002 (121) 1 2002 32 747 61.512 BIN JPL
LoMP LCDB
130 Elektra — 199 0.03
0.01
0.008		 1873 199 5.2247 S/2003 (130) 1 2003 6.0 1298 126.9 BIN JPL
LoMP LCDB
S/2014 (130) 1 2014 2.0 498 30.14
S/2014 (130) 2 2014 1.6 345 16.8
216 Kleopatra — 135 0.066
0.051		 1880 135 5.38528 Alexhelios
S/2008 (216) 1
(Kleopatra I)		 2008 8.9 678 55.68 BIN JPL
LoMP LCDB
Cleoselene
S/2008 (216) 2
(Kleopatra II)		 2008 6.9 454 29.76
243 Ida KOR 31.4 0.045 1884 31.4 4.6336 Dactyl (Ida I) 1993 1.4 108 36.96 BIN JPL
LoMP LCDB
283 Emma EMA 134.7 0.067 1889 134.7 6.888 S/2003 (283) 1 2003 9 581 80.472 BIN JPL
LoMP LCDB
317 Roxane — 20.56 0.267 1891 19.86 8.169 Olympias
S/2009 (317) 1
(Roxane I)		 2009 5.3 257 336 BIN JPL
LoMP LCDB
379 Huenna THM 87.47 0.066 1894 87.47 7.022 S/2003 (379) 1 2003 5.8 3336 2102 BIN JPL
LoMP LCDB
702 Alauda ALA 201.96 0.017 1910 201.96 8.354 Pichi üñëm
S/2007 (702) 1		 2007 3.51 1227 117.9 BIN JPL
LoMP LCDB
762 Pulcova — 143 0.134 1913 141.72 5.839 S/2000 (762) 1 2000 19 703 106.51 BIN JPL
LoMP LCDB
809 Lundia FLO 9.1 0.89 1915 6.9 15.418 S/2005 (809) 1 2005 6.1 15.8 15.418 BIN JPL
LoMP LCDB
854 Frostia — 7.84 0.724 1916 6.35 37.728 S/2004 (854) 1 2004 4.6 17 37.73 BIN JPL
LoMP LCDB
939 Isberga — 12.9 0.29 1920 12.4 2.9170 S/2006 (939) 1 2006 3.6 33 26.630 BIN JPL
LoMP LCDB
1016 Anitra FLO 9.54 – 1924 9.54 5.9295 S/2016 (1016) 1 2016 – – – BIN JPL
LoMP LCDB
1052 Belgica FLO 10.41 0.36+ 1925 9.79 2.7097 S/2012 (1052) 1 2012 3.53 34 47.26 BIN JPL
LoMP LCDB
1089 Tama — 12.92 0.685 1927 10.7 16.444 S/2003 (1089) 1 2003 7.33 20.7 16.445 BIN JPL
LoMP LCDB
1313 Berna — 13.5 0.79 1933 10.6 25.464 S/2004 (1313) 1 2004 8.37 25 25.464 BIN JPL
LoMP LCDB
1333 Cevenola EUN 17.15 0.35 1934 17.15 4.88 S/2008 (1333) 1 2008 – – – BIN JPL
LoMP LCDB
1338 Duponta FLO 7.88 0.23 1934 7.68 3.8545 S/2007 (1338) 1 2007 1.77 14 17.57 BIN JPL
LoMP LCDB
1344 Caubeta — 5.84 – 1935 5.84 3.122 S/2011 (1344) 1 2011 – – – BIN JPL
LoMP LCDB
1453 Fennia H 7.23 0.28+ 1938 6.96 4.4121 S/2007 (1453) 1 2007 1.95 15 22.9896 BIN JPL
LoMP LCDB
1509 Esclangona H 8.17 0.331 1938 7.76 3.253 S/2003 (1509) 1 2003 2.57 140 552 BIN JPL
LoMP LCDB
1526 Mikkeli — 5.32 0.2 1939 5.22 2.9341 S/2020 (1526) 1 2020 1.04 8.8 15.9792 BIN JPL LoMP LCDB
1626 Sadeya — 15.14 0.26 1927 14.65 3.4202 S/2020 (1626) 1 2020 3.81 54 51.312 BIN JPL LoMP LCDB
1717 Arlon — 9.13 – 1954 9.13 5.148 S/2005 (1717) 1 2005 – 17 18.235 BIN JPL
LoMP LCDB
1770 Schlesinger — 10.61 – 1967 10.61 2.8804 S/2016 (1770) 1 2016 – – – BIN JPL
LoMP LCDB
1798 Watts FLO 6.63 – 1949 6.63 – S/2017 (1798) 1 2017 – – – BIN JPL
LoMP LCDB
1803 Zwicky PHO 9.93 0.26 1967 9.61 2.7329 S/2021 (1803) 1 2021 2.50 24 28.459 BIN JPL LoMP LCDB
1830 Pogson FLO 8.28 0.32+ 1968 7.89 2.57 S/2007 (1830) 1 2007 2.52 18 24.24 BIN JPL
LoMP LCDB
1934 Jeffers PHO 9.24 – 1972 9.24 6.0427 S/2020 (1934) 1 2020 – 15 15.014 BIN JPL
LoMP LCDB
2006 Polonskaya FLO 4.62 0.22+ 1973 4.51 3.118 S/2005 (2006) 1 2005 0.99 8.5 19.1496 BIN JPL
LoMP LCDB
2019 van Albada FLO 7.86 0.26+ 1935 7.61 2.7294 S/2019 (2019) 1 2019 1.98+ 14 17.982 BIN JPL LoMP LCDB
2047 Smetana H 3.07 0.21+ 1971 3 2.497 S/2012 (2047) 1 2012 0.63 6.3 22.4304 BIN JPL
LoMP LCDB
2070 Humason — 4.57 0.31 1964 4.37 3.1883 S/2018 (2070) 1 2018 1.35 17 53.50 BIN JPL
LoMP LCDB
2121 Sevastopol FLO 9.32 0.41 1971 8.62 2.9064 S/2010 (2121) 1 2010 3.54 26 37.104 BIN JPL
LoMP LCDB
2131 Mayall H 8.56 0.26+ 1975 8.28 2.568 S/2009 (2131) 1 2009 2.15 18 23.4792 BIN JPL
LoMP LCDB
2178 Kazakhstania — 4.31 0.26 1972 4.17 3.0183 S/2018 (2178) 1 2018 1.08 8 18.50 BIN JPL
LoMP LCDB
2242 Balaton — 6.13 0.25+ 1936 5.95 2.7979 S/2015 (2242) 1 2015 1.49+ 9 12.96 BIN JPL
LoMP LCDB
2337 Boubín — 8.01 0.16+ 1976 7.91 2.53163 S/2018 (2337) 1 2018 1.27+ 13 16.09 BIN JPL
LoMP LCDB
2343 Siding Spring NYS 5.2 0.19+ 1979 5.11 2.10637 S/2015 (2343) 1 2015 0.97+ 7 11.78904 BIN JPL
LoMP LCDB
2478 Tokai FLO 9.98 0.72+ 1981 8.1 25.885 S/2007 (2478) 1 2007 5.83 21 25.896 BIN JPL
LoMP LCDB
2486 Metsähovi — 8.42 – 1939 8.42 4.4518 S/2007 (2486) 1 2007 – – – BIN JPL
LoMP LCDB
2491 Tvashtri H 3.259 0.24+ 1977 3.17 4.0852 S/2018 (2491) 1 2018 0.76+ 7.5 26.71 BIN JPL
LoMP LCDB
2516 Roman — 4.408 0.23 1964 4.3 2.6266 S/2019 (2516) 1 2019 0.99 7.3 16.2192 BIN JPL LoMP LCDB
2535 Hämeenlinna — 9.42 0.22+ 1939 9.2 3.23106 S/2015 (2535) 1 2015 2.0+ 19 21.2304 BIN JPL
LoMP LCDB
2602 Moore — 9.6 0.28 1982 9.2 3.46723 S/2019 (2602) 1 2019 2.6 22 27.455 BIN JPL LoMP LCDB
2623 Zech — 7.92 0.29+ 1919 7.61 2.7401 S/2014 (2623) 1 2014 2.21+ 48 117.19 BIN JPL
LoMP LCDB
2691 Sersic — 5.44 0.43+ 1974 5 3.8811 S/2011 (2691) 1 2011 2.15 12 26.808 BIN JPL
LoMP LCDB
2754 Efimov — 6.58 0.2 1966 6.46 2.4497 S/2006 (2754) 1 2006 1.29 10 14.7648 BIN JPL
LoMP LCDB
2815 Soma FLO 7.16 0.25 1982 6.95 2.73325 S/2011 (2815) 1 2011 1.74 13 17.916 BIN JPL
LoMP LCDB
2825 Crosby — 5.06 0.18+ 1938 4.98 2.8135 S/2017 (2825) 1 2017 0.9+ – 14.3496 BIN JPL
LoMP LCDB
2873 Binzel FLO 6.43 0.25+ 1982 6.24 2.7037 S/2019 (2873) 1 2019 1.56+ n.a. 44.58 BIN JPL
LoMP LCDB
2881 Meiden — 5.67 – 1983 5.67 3.48 S/2017 (2881) 1 2017 – – – BIN JPL
LoMP LCDB
3034 Climenhaga — 9.97 – 1917 9.97 2.73749 S/2009 (3034) 1 2009 – 19 18.9552 BIN JPL
LoMP LCDB
3073 Kursk FLO 6.89 0.25 1979 6.69 3.4468 S/2006 (3073) 1 2006 1.67 22 44.952 BIN JPL
LoMP LCDB
3169 Ostro H 5.15 0.87 1981 3.89 6.509 S/2005 (3169) 1 2005 3.38 5.2 6.5088 BIN JPL
LoMP LCDB
3309 Brorfelde H 5.04 0.26 1982 4.88 2.5041 S/2005 (3309) 1 2005 1.27 9 18.48 BIN JPL
LoMP LCDB
3378 Susanvictoria — 6.64 0.24+ 1922 6.46 2.5621 S/2017 (3378) 1 2017 1.55+ 11 17.1312 BIN JPL
LoMP LCDB
3390 Demanet FLO 5.06 0.26 1984 4.9 2.59457 S/2021 (3390) 1 2021 1.27 14 37.14 BIN JPL LoMP LCDB
3433 Fehrenbach — 7.74 0.31 1963 7.4 3.916 S/2015 (3433) 1 2015 2.3 14 19.6656 BIN JPL
LoMP LCDB
3523 Arina — 9.07 0.24+ 1975 8.82 2.6742 S/2021 (3523) 1 2021 2.12+ 22 29.261 BIN JPL LoMP LCDB
3623 Chaplin KOR 11.1 – 1981 11.1 8.361 S/2008 (3623) 1 2008 – – – BIN JPL
LoMP LCDB
3673 Levy — 6.41 0.28 1985 6.17 2.688 S/2007 (3673) 1 2007 1.73 13 21.6 BIN JPL
LoMP LCDB
3703 Volkonskaya V 3.73 0.4 1978 3.46 3.235 S/2005 (3703) 1 2005 1.39 7.8 24 BIN JPL
LoMP LCDB
3749 Balam FLO 4.66 0.466
0.42		 1982 3.95 2.80483 S/2002 (3749) 1 2002 1.84 289 1464 BIN JPL
LoMP LCDB
S/2008 (3749) 1 2008 1.66 20 33.384
3782 Celle V 5.92 0.43 1986 5.44 3.839 S/2003 (3782) 1 2003 2.34 18 36.576 BIN JPL
LoMP LCDB
3792 Preston PHO 5.16 – 1985 5.16 2.9277 S/2016 (3792) 1 2016 – – 46.8 BIN JPL
LoMP LCDB
3657 Ermolova V 6.66 0.14 1978 6.6 2.60655 S/2020 (3657) 1 2020 0.92 9.4 12.540 BIN JPL
LoMP LCDB
3841 Dicicco FLO 6.25 0.28+ 1983 6.02 3.5949 S/2014 (3841) 1 2014 1.67+ 12 21.6288 BIN JPL
LoMP LCDB
3865 Lindbloom V 7.97 0.65+ 1988 6.68- 26.016 S/2020 (3865) 1 2020 4.34+ 17 26.016 BIN JPL LoMP LCDB
3868 Mendoza — 9.35 0.22 1960 9.13 2.7709 S/2009 (3868) 1 2009 2.01 20 24.384 BIN JPL
LoMP LCDB
3905 Doppler — 7.91 0.77+ 1984 6.27 50.8 S/2013 (3905) 1 2013 4.83 26 50.808 BIN JPL
LoMP LCDB
3912 Troja — 5.93 0.33 1988 5.63 3.6594 S/2021 (3912) 1 2021 1.86 10 17.371 BIN JPL
LoMP LCDB
3951 Zichichi — 6.72 0.33+ 1986 6.38 3.3942 S/2006 (3951) 1 2006 2.11 16 27.6 BIN JPL
LoMP LCDB
3982 Kastel' — 6.79 – 1984 6.79 5.835 S/2005 (3982) 1 2005 – – – BIN JPL
LoMP LCDB
4029 Bridges — 8.02 0.24 1982 7.8 3.5746 S/2006 (4029) 1 2006 1.87 13 16.3104 BIN JPL
LoMP LCDB
4030 Archenhold — 6.97 0.31+ 1984 6.66 3.27292 S/2020 (4030) 1 2020 2.06+ 12 15.9739 BIN JPL
LoMP LCDB
4092 Tyr — 7.6 0.45+ 1986 7.6 16.0875 S/2020 (4092) 1 2020 – 14 16.0875 BIN JPL
LoMP LCDB
4272 Entsuji — 7.68 0.18 1977 7.56 2.8087 S/2015 (4272) 1 2015 1.36 13 15.9456 BIN JPL
LoMP LCDB
4288 Tokyotech EUN 12.3 0.30+ 1989 11.78 3.18 S/2019 (4288) 1 2019 3.53+ 30 30.276 BIN JPL LoMP LCDB
4296 van Woerkom FLO 7.6 0.3 1935 7.3 2.809 S/2016 (4296) 1 2016 2.2 17 26.232 BIN JPL
LoMP LCDB
4337 Arecibo THM 19.69 0.53 1985 24.3 – S/2021 (4337) 1 2021 13 48 19.2 BIN JPL
LoMP LCDB
4362 Carlisle FLO 5.59 0.33+ 1978 5.31- 2.63289 S/2021 (4362) 1 2021 1.75+ 17 43.296 BIN JPL
LoMP LCDB
4383 Suruga — 6.47 0.21+ 1989 6.33 3.4068 S/2013 (4383) 1 2013 1.33 11 16.3872 BIN JPL
LoMP LCDB
4440 Tchantchès H 2.09 0.25+ 1984 2.03 2.78836 S/2005 (4440) 1 2005 0.51 3.8 18.6912 BIN JPL
LoMP LCDB
4492 Debussy — 17.36 0.643 1988 14.6 26.606 S/2004 (4492) 1 2004 9.39 31 26.616 BIN JPL
LoMP LCDB
4514 Vilen — 6.29 0.26 1972 6.09 2.8922 S/2015 (4514) 1 2015 1.58+ 11 16.8504 BIN JPL
LoMP LCDB
4541 Mizuno — 6.29 – 1989 6.29 5.261 S/2015 (4541) 1 2015 – – – BIN JPL
LoMP LCDB
4607 Seilandfarm — 7.39 0.29+ 1987 7.1 3.9683 S/2009 (4607) 1 2009 2.06 19 31.632 BIN JPL
LoMP LCDB
4666 Dietz — 6.83 0.34
–		 1986 6.52 2.95242 S/2015 (4666) 1 2015 2.22+ 18 33.192 BIN JPL
LoMP LCDB
S/2015 (4666) 2 2015 – – –
4674 Pauling H 4.68 0.32 1989 4.46 2.521 S/2004 (4674) 1 2004 1.41 250 3120 BIN JPL
LoMP LCDB
4765 Wasserburg H 1.78 0.16+ 1986 1.76 3.6231 S/2013 (4675) 1 2013 0.28 2.9 15.9696 BIN JPL
LoMP LCDB
4786 Tatianina — 3.28 0.19+ 1985 3.22 2.9227 S/2006 (4786) 1 2006 0.61 6.6 21.6696 BIN JPL
LoMP LCDB
4788 Simpson — 3.58 0.17+ 1986 3.53 2.81752 S/2020 (4788) 1 2020 0.6+ 5.7 14.981 BIN JPL LoMP LCDB
4868 Knushevia H 1.535 0.13+ 1989 1.52 3.1422 S/2015 (4868) 1 2015 0.2+ 2.1 11.922 BIN JPL
LoMP LCDB
4951 Iwamoto — 5.52 0.76+ 1990 4.39 118.0 S/2007 (4951) 1 2007 3.34 31 118.0 BIN JPL
LoMP LCDB
5112 Kusaji FLO 3.42 0.31 1987 3.27 2.7995 S/2016 (5112) 1 2016 1.01 7 20.74 BIN JPL
LoMP LCDB
5135 Nibutani — 4.82 0.28 1990 4.64 2.818 S/2020 (5135) 1 2020 1.3 9.6 21.7368 BIN JPL LoMP LCDB
5402 Kejosmith — 4.19 0.18+ 1989 4.12 2.69549 S/2018 (5402) 1 2018 – 12 36.62 BIN JPL
LoMP LCDB
5425 Vojtěch V 7.05 0.22 1984 6.89 2.64759 S/2015 (5425) 1 2015 1.52 16 25.4304 BIN JPL
LoMP LCDB
5426 Sharp H 2.033 – 1985 2.033 4.5609 S/2014 (5426) 1 2014 – 4.5 24.2208 BIN JPL
LoMP LCDB
5474 Gingasen V 5.05 – 1988 5.05 3.6242 S/2008 (5474) 1 2008 – – – BIN JPL
LoMP LCDB
5477 Holmes H 3.15 0.37 1989 2.95 2.9943 S/2005 (5477) 1 2005 1.09 6.7 24.43 BIN JPL
LoMP LCDB
5481 Kiuchi V 7.92 0.33 1990 7.52 3.6196 S/2008 (5481) 1 2008 2.48 15 20.90 BIN JPL
LoMP LCDB
5500 Twilley FLO 4.48 0.27+ 1981 4.33 2.9554 S/2017 (5500) 1 2017 1.17+ 7.8 17.556 BIN JPL LoMP LCDB
5536 Honeycutt — 9.1 0.31 1955 8.7 3.583 S/2016 (5536) 1 2016 2.7 15 16.325 BIN JPL
LoMP LCDB
5674 Wolff — 6.04 0.8+ 1986 4.72 93.7 S/2015 (5674) 1 2015 3.78+ 30 93.696 BIN JPL
LoMP LCDB
5772 Johnlambert — 8 0.22+ 1988 7.81 3.0782 S/2021 (5772) 1 2021 1.72+ 14 17.98 BIN JPL
LoMP LCDB
5872 Sugano — 6.33 0.3+ 1989 6.06 3.3642 S/2016 (5872) 1 2016 1.82+ 11 18.84 BIN JPL
LoMP LCDB
5899 Jedicke H 2.67 0.32+ 1986 2.54 2.748 S/2010 (5899) 1 2010 0.81 4.4 16.699 BIN JPL
LoMP LCDB
5905 Johnson H 4.79 0.40 1989 4.45 3.7824 S/2005 (5905) 1 2005 1.78 9.3 21.785 BIN JPL
LoMP LCDB
6009 Yuzuruyoshii — 10.32 0.29+ 1990 9.91 3.03067 S/2021 (6009) 1 2021 2.87+ 33 44.07 BIN JPL
LoMP LCDB
6016 Carnelli — 3.53 0.2 1991 3.46 2.8028 S/2016 (6016) 1 2016 0.69 7 21.331 BIN JPL
LoMP LCDB
6084 Bascom — 6.35 0.37 1985 5.96 2.745 S/2006 (6084) 1 2006 2.2 20 43.512 BIN JPL
LoMP LCDB
6100 Kunitomoikkansai — 4.06 0.38+ 1991 3.8 4.3018 S/2016 (6100) 1 2016 1.44+ 7 18.46 BIN JPL
LoMP LCDB
6181 Bobweber — 4.49 – 1986 4.49 2.75796 S/2008 (6181) 1 2008 – – – BIN JPL
LoMP LCDB
6186 Zenon — 6 0.28 1988 5.8 2.6832 S/2017 (6186) 1 2017 1.6 9.1 14.393 BIN JPL
LoMP LCDB
6244 Okamoto — 6.89 0.25 1990 6.69 2.8958 S/2006 (6244) 1 2006 1.67 13 20.3208 BIN JPL
LoMP LCDB
6245 Ikufumi — 8.1 0.23 1990 7.89 2.9222 S/2018 (6245) 1 2018 1.89 13 15.44 BIN JPL
LoMP LCDB
(6265) 1985 TW3 — 4.95 0.24 1985 4.81 2.709 S/2007 (6265) 1 2007 1.16 8 15.8592 BIN JPL
LoMP LCDB
(6369) 1983 UC FLO 5.17 0.35 1983 4.9 2.9 S/2013 (6369) 1 2013 1.7 15– 39.8 BIN JPL
LoMP LCDB
6384 Kervin H 3.74 0.3+ 1989 3.6 3.6194 S/2015 (6384) 1 2015 1.1+ 6.1 15.94 BIN JPL
LoMP LCDB
6615 Plutarchos — 3.14 0.25 1960 3.05 2.3247 S/2007 (6615) 1 2007 0.76 9.7 40.03 BIN JPL
LoMP LCDB
6708 Bobbievaile — 9.23 0.57+ 1989 8.02 8.221 S/2009 (6708) 1 2009 4.57 19 24.696 BIN JPL
LoMP LCDB
7187 Isobe H 6.05 0.17 1992 5.96 4.2427 S/2012 (7187) 1 2012 1.01 16 33.1 BIN JPL
LoMP LCDB
7225 Huntress — 6.68 0.21 1983 6.54 2.4400 S/2007 (7225) 1 2007 1.37 10 14.6712 BIN JPL
LoMP LCDB
7307 Takei — 10.1 0.24+ 1994 9.8 2.74685 S/2021 (7307) 1 2021 2.6 19 20.0064 BIN JPL LoMP LCDB
7344 Summerfield — 6.25 – 1992 6.25 – S/2017 (7344) 1 2017 – – – BIN JPL
LoMP LCDB
7393 Luginbuhl FLO 5.47 0.4+ 1984 5.08 2.68763 S/2019 (7393) 1 2017 2.03+ 16 39.4224 BIN JPL
LoMP LCDB
(7792) 1995 WZ3 — 7.45 – 1995 7.45 3.16001 S/2021 (7792) 2021 – – – BIN JPL
LoMP LCDB
7958 Leakey H 2.94 0.30 1994 2.82 2.34843 S/2012 (7958) 1 2012 0.85 10 50.28 BIN JPL
LoMP LCDB
8026 Johnmckay H 1.69 – 1991 1.69 372 S/2010 (8026) 1 2010 – – – BIN JPL
LoMP LCDB
8077 Hoyle — 12 s/p 1986 12 2.7454 S/2000 (8077) 1 2000 – – – BIN JPL
LoMP LCDB
8116 Jeanperrin FLO 4.77 0.33+ 1996 4.53 3.6169 S/2007 (8116) 1 2007 1.49 13 36.144 BIN JPL
LoMP LCDB
8306 Shoko FLO 3.46 0.40+ 1995 3.21 3.350 S/2013 (8306) 1 2013 1.28 9.4 36.192 BIN JPL
LoMP LCDB
8474 Rettig FLO 6 0.86+ 1985 4.5 30.54 S/2015 (8474) 1 2015 3.9+ 14 30.54 BIN JPL
LoMP LCDB
9069 Hovland H 3.13 0.30+ 1993 3 4.2175 S/2004 (9069) 1 2004 0.9 7.8 30.336 BIN JPL
LoMP LCDB
9260 Edwardolson — 4.12 0.27 1953 3.98 3.0852 S/2005 (9260) 1 2005 1.07 7.2 17.784 BIN JPL
LoMP LCDB
(9332) 1990 SB1 EUN 6.18 0.26 1990 5.98 2.98701 S/2019 (9332) 1 2019 1.55 21 48.84 BIN JPL LoMP LCDB
9617 Grahamchapman FLO 2.84 0.27 1993 2.74 2.2856 S/2006 (9617) 1 2006 0.74 5.2 19.3848 BIN JPL
LoMP LCDB
9783 Tensho-kan — 5.33 0.35 1994 5.1 2.9 S/2013 (9783) 1 2013 1.8 13– 29.568 BIN JPL
LoMP LCDB
9972 Minoruoda — 9.1 – 1993 – – S/2017 (9972) 1 2017 – – – BIN JPL
LoMP LCDB
10123 Fideöja — 3.48 0.35 1993 3.3 2.87 S/2013 (10123) 1 2013 1.2 13– 56.448 BIN JPL
LoMP LCDB
10132 Lummelunda — 3.589 0.28+ 1993 3.46 2.5099 S/2017 (10132) 1 2017 0.97+ 7.3 22.44 BIN JPL
LoMP LCDB
10208 Germanicus FLO 3.55 0.46 1997 3.23 3.34825 S/2007 (10208) 1 2007 1.48 13 58.56 BIN JPL
LoMP LCDB
(11217) 1999 JC4 H 3.3 – 1999 3.3 4.8219 S/2013 (11217) 1 2013 – 6.2 19.1712 BIN JPL
LoMP LCDB
11227 Ksenborisova — 2.6 – 1999 2.6 2.61679 S/2017 (11227) 1 2017 – – – BIN JPL
LoMP LCDB
11264 Claudiomaccone — 4.2 0.31+ 1979 4- 3.1872 S/2005 (11264) 1 2005 1.24+ 6 15.1104 BIN JPL
LoMP LCDB
12326 Shirasaki FLO 3.8 0.24 1992 3.7 2.7286 S/2016 (12326) 1 2016 0.9 8.4 25.056 BIN JPL
LoMP LCDB
13123 Tyson PHO 10.87 – 1994 10.87 3.3303 S/2015 (13123) 1 2015 – – – BIN JPL
LoMP LCDB
15107 Toepperwein FLO 2.86 0.19+ 2000 2.81 2.5327 S/2021 (15107) 1 2021 0.53+ 5.4 19.6032 BIN JPL LoMP LCDB
15268 Wendelinefroger NYS 3.97 0.27+ 1990 3.83 2.4224 S/2008 (15268) 1 2008 1.03 8.7 25.08 BIN JPL
LoMP LCDB
(15430) 1998 UR31 — 3.74 – 1998 3.74 2.5273 S/2010 (15430) 1 2010 – 8.2 23.9592 BIN JPL
LoMP LCDB
15822 Genefahnestock H 1.72 0.19+ 1994 1.69 2.96 S/2010 (15822) 1 2010 0.32 3.3 20.1312 BIN JPL
LoMP LCDB
16525 Shumarinaiko NYS 5.25 0.16+ 1991 5.18 2.5932 S/2013 (16525) 1 2013 0.83 8.1 14.4096 BIN JPL
LoMP LCDB
(16694) 1995 AJ FLO 4.06 0.23+ 1995 3.96 3.6421 S/2020 (16694) 1 2020 0.91+ 9 25.2792 BIN JPL LoMP LCDB
17081 Jaytee — 4.52 0.26+ 1999 4.37 2.8818 S/2021 (17081) 1 2021 1.137+ 7.5 16.34 BIN JPL
LoMP LCDB
17246 Christophedumas KOR 4.61 0.222 2000 4.5 5+ S/2004 (17246) 1 2004 1 228 2160 BIN JPL
LoMP LCDB
17260 Kušnirák — 4.77 0.26 2000 4.62 3.1287 S/2006 (17260) 1 2006 1.2 7.4 14.7576 BIN JPL
LoMP LCDB
17700 Oleksiygolubov — 3.45 0.31+ 1997 3.29 3.8382 S/2018 (17700) 1 2018 1.02+ 5.4 15.49 BIN JPL
LoMP LCDB
(18303) 1980 PU — 4.38 0.24 1980 4.3 2.72627 S/2019 (18303) 1 2019 1 6.1 12.27 BIN JPL LoMP LCDB
(18503) 1996 PY4 PHO 3.529 0.24+ 1996 3.43 3.4391 S/2021 (18503) 1 2021 0.82+ 6.7 19.904 BIN JPL
LoMP LCDB
(18527) 1996 VJ30 V 3.35 0.32 1996 3.19 3.3529 S/2018 (18527) 1 2018 1.02 6 19.07 BIN JPL
LoMP LCDB
(18890) 2000 EV26 H 4 0.27+ 2000 3.86 3.8216 S/2014 (18890) 1 2014 1.04+ 6 14.2896 BIN JPL
LoMP LCDB
20325 Julianoey — 4.94 0.3 1998 4.73 3.24474 S/2014 (20325) 1 2014 1.42 10 23.5 BIN JPL
LoMP LCDB
20882 Paulsánchez NYS 4.4 – 2000 4.4 2.5586 S/2018 (20882) 1 2018 – 12 32.810 BIN JPL
LoMP LCDB
21436 Chaoyichi — 1.95 s/p 1998 1.8 2.87 S/2014 (21436) 1 2014 0.6 0.35 – BIN JPL
LoMP LCDB
21527 Horton EUN 4.99 0.21+ 1998 4.88 2.76762 S/2019 (21527) 1 2019 1.02+ 8.7 17.44 BIN JPL LoMP LCDB
22899 Alconrad KOR 5.68 0.222 1999 5.54 4.03 S/2003 (22899) 1 2003 1.23 182 1344 BIN JPL
LoMP LCDB
(24106) 1999 VA12 — – – 1999 – – S/2020 (24106) 1 2020 – – – BIN JPL
LoMP LCDB
(24465) 2000 SX155 H 3.18 0.22+ 2000 3.1 2.66087 S/2016 (24465) 1 2016 0.68 3.6 9.252 BIN JPL
LoMP LCDB
25015 Lairdclose FLO 2.899 – 1998 2.9 – S/2016 (25015) 1 2018 – – – BIN JPL
LoMP LCDB
25021 Nischaykumar — 2.1 0.28 1998 2 2.5344 S/2019 (25021) 1 2019 0.56 n.a. 23.496 BIN JPL
LoMP LCDB
(26416) 1999 XM84 — 4.56 – 1999 4.56 2.907 S/2015 (26416) 1 2015 – – – BIN JPL
LoMP LCDB
(26420) 1999 XL103 — 2.02 0.34+ 1999 1.91 3.2 S/2019 (26420) 1 2019 0.65+ n.a. 23.899 BIN JPL
LoMP LCDB
(27568) 2000 PT6 H 1.82 s/p 2000 1.82 3.4885 S/2013 (26578) 1 2013 – 3.1 16.356 BIN JPL
LoMP LCDB
27675 Paulmaley PHO 5.09 – 1981 5.09 – S/2017 (27675) 1 2017 – – – BIN JPL
LoMP LCDB
31450 Stevepreston — 10.62 0.22 1999 10.4 3.4116 S/2015 (31450) 1 2015 2.3 39 53.47 BIN JPL
LoMP LCDB
32008 Adriángalád — 4.56 0.4+ 2000 4.23 3.0171 S/2007 (32008) 1 2007 1.69 13 40.25 BIN JPL
LoMP LCDB
(38079) 1999 HF PHO 3.4 – 1999 3.4 16.675 S/2020 (38079) 1 2020 – – – BIN JPL
LoMP LCDB
(43008) 1999 UD31 — 2.5 0.35 1999 2.4 2.9 S/2014 (43008) 1 2014 0.8 – – BIN JPL
LoMP LCDB
(44620) 1999 RS43 — 2.62 0.35 1999 0.66 2.9 S/2014 (44620) 1 2014 0.2 2 – BIN JPL
LoMP LCDB
46829 McMahon — 3.3 0.4 1998 3.06 2.6236 S/2015 (46829) 1 2015 1.22 5.4 16.833 BIN JPL
LoMP LCDB
52316 Daveslater H 3.3 0.16+ 1992 3.26 2.7629 S/2012 (52316) 1 2012 0.52 4.9 13.44 BIN JPL
LoMP LCDB
(57202) 2001 QJ53 — 2.2 0.25+ 2001 2.2 2.44482 S/2017 (57202) 1 2017 0.5+ 5 24 BIN JPL
LoMP LCDB
69406 Martz-Kohl H 3.18 0.19+ 1995 3.12 4.486 S/2013 (69406) 1 2013 0.59 5.3 16.11 BIN JPL
LoMP LCDB
(72036) 2000 XM44 PHO 2.7 0.25+ 2000 2.62 2.582 S/2019 (72036) 1 2019 0.66+ 4.9 18.77 BIN JPL
LoMP LCDB
76818 Brianenke H 3.84 0.37 2000 3.6 3.166 S/2005 (76818) 1 2005 1.33 5.6 14.12 BIN JPL
LoMP LCDB
79472 Chiorny H 3.79 0.32 1998 3.79 2.8802 S/2012 (79472) 1 2012 – 9 25.94 BIN JPL
LoMP LCDB
(80218) 1999 VO123 — 1.58 0.3 1999 0.28 2.9 S/2012 (80218) 1 2012 0.08 0.9 33.1 BIN JPL
LoMP LCDB
(300163) 2006 VW139 — 2.6 1 2006 1.8 – S/2011 (300163) 1 2011 1.8 104 3360 BIN JPL
LoMP LCDB

The following binaries are double asteroids, with similarly sized components, and a barycenter outside of the larger object.

  1. 90 Antiope — S/2000 (90) 1
  2. 854 Frostia — S/2004 (854) 1
  3. 1313 Berna — S/2004 (1313) 1
  4. 2478 Tokai — S/2007 (2478) 1
  5. 3169 Ostro — S/2005 (3169) 1
  6. 3749 Balam — S/2002 (3749) 1
  7. 3905 Doppler — S/2013 (3905) 1
  8. 4674 Pauling — S/2004 (4674) 1
  9. 4951 Iwamoto — S/2007 (4951) 1
  10. 5674 Wolff — S/2015 (5674) 1
  11. 8474 Rettig — S/2015 (8474) 1
  12. 17246 Christophedumas — S/2004 (17246) 1
  13. (300163) 2006 VW139 — S/2011 (300163) 1

In addition, these bodies might be double asteroids, but due to errors in their size and orbit, it is uncertain.

  1. 809 Lundia — S/2005 (809) 1
  2. 1089 Tama — S/2003 (1089) 1
  3. 1509 Esclangona — S/2003 (1509) 1
  4. 4492 Debussy — S/2004 (4492) 1
  5. 11264 Claudiomaccone — S/2003 (11264) 1
  6. 22899 Alconrad — S/2003 (22899) 1

Jupiter trojans

This is a list of Jupiter trojans with companions.[1] Candidate binaries with an unconfirmed status are displayed on a dark background.[22] For an overview, see summary and introduction.

System Primary Secondary Refs
Designation Class De
(km)		 s/p-ratio YOD Dp
(km)		 RTp
(hours)		 Designation YOD Ds
(km)		 as
(km)		 Ps
(hours)
617 Patroclus L5 145 0.924 1906 106 102.79 Menoetius (Patroclus I) 2001 98 680 102.792 BIN JPL LoMP LCDB
624 Hektor L4 250 0.048 1907 184 6.921 Skamandrios (Hektor I) 2006 12 957.5 71.162 BIN JPL LoMP LCDB
3548 Eurybates L4 63.9 0.013 1973 63.9 8.711 Queta (Eurybates I) 2018 0.8 2310 1982.4 BIN JPL LoMP LCDB
16974 Iphthime L4 57.3 0.767 1998 45.5 78.9 S/2013 (16974) 1 2013 34.9 179 78.96 BIN JPL LoMP LCDB
(17365) 1978 VF11 L5 42.6 0.843 1978 32.6 12.672 S/2005 (17365) 1 2005 27.5 43 12.672 BIN JPL LoMP LCDB
29314 Eurydamas L5 40 0.737 1994 32 15.035 S/2005 (29314) 1 2005 24 41 15.036 BIN JPL LoMP LCDB
15094 Polymele L4 1999 21 Shaun (temporary designation)[23] 2022

Trans-Neptunian objects

This is a list of trans-Neptunian objects with companions.[1] Candidate binaries with an unconfirmed status are displayed on a dark background.[22] This list gives the companion's orbital period (Ps) in days rather than hours. For an overview, see summary and introduction.

System Primary Secondary Refs
Designation Class De
(km)		 s/p-ratio YOD Dp
(km)		 RTp
(hours)		 Designation YOD Ds
(km)		 as
(km)		 Ps
(days)
(26308) 1998 SM165 1:2 280 0.302 1998 268 8.4 S/2001 (26308) 1 2001 81 11377 130.158 BIN JPL LoMP LCDB
38628 Huya PLU 458 0.525 2000 406 5.28 S/2012 (38628) 1 2012 213 1740 3.2 BIN JPL LoMP LCDB
42355 Typhon SDO 185 0.55 2002 162 9.67 Echidna (Typhon I) 2006 89 1580 18.982 BIN JPL LoMP LCDB
47171 Lempo PLU 393 0.486
0.927		 1999 272 45.763 Paha (Lempo I) 2001 132 7411 50.3 BIN JPL LoMP LCDB
Hiisi (Lempo II) 2007 251 867 1.907
(48639) 1995 TL8 SDO 194 0.457 1995 176 – S/2002 (48639) 1 2002 80 420 1.4 BIN JPL LoMP LCDB
50000 Quaoar CUB 1074 0.076 2002 1070 8.839 Weywot (Quaoar I) 2006 81 13800 12.26 BIN JPL LoMP LCDB
(55637) 2002 UX25 CUB 697 0.316 2002 665 14.382 S/2007 (55637) 1 2007 210 4770 8.309 BIN JPL LoMP LCDB
58534 Logos CUB 106 0.766 1997 82 – Zoe (Logos I) 2001 67 8217 309.87 BIN JPL LoMP LCDB
(60458) 2000 CM114 SDO 211 0.769 2000 167 – S/2006 (60458) 1 2006 128 2200 15 BIN JPL LoMP LCDB
(60621) 2000 FE8 2:5 183 0.759 2000 146 – S/2007 (60621) 1 2007 111 1180 7.5 BIN JPL LoMP LCDB
65489 Ceto SDO 281 0.764 2003 223 4.43 Phorcys (Ceto I) 2006 171 1840 9.554 BIN JPL LoMP LCDB
66652 Borasisi CUB 163 0.817 1999 126 6.4 Pabu (Borasisi I) 2003 103 4528 46.2888 BIN JPL LoMP LCDB
79360 Sila–Nunam CUB 343 0.944 1997 249 300.2388 Nunam 2002 236 2777 12.51 BIN JPL LoMP LCDB
(80806) 2000 CM105 CUB 201 0.759 2000 160 – S/2005 (80806) 1 2002 121 2700 23 BIN JPL LoMP LCDB
(82075) 2000 YW134 3:8 229 0.347 2000 216 – S/2005 (82075) 1 2002 75 1900 10 BIN JPL LoMP LCDB
(82157) 2001 FM185 CUB 183 0.867 2001 138 – S/2008 (82157) 1 2008 120 3130 33 BIN JPL LoMP LCDB
88611 Teharonhiawako CUB 220 0.724 2001 178 9.505 Sawiskera (Teharonhiawako I) 2001 129 27670 828.76 BIN JPL LoMP LCDB
90482 Orcus PLU 958 0.31 2004 917 13.18841 Vanth (Orcus I) 2005 442 9006 9.539 BIN JPL LoMP LCDB
(119067) 2001 KP76 CUB 211 0.955 2001 153 – S/2007 (119067) 1 2007 146 8900 130 BIN JPL LoMP LCDB
(119979) 2002 WC19 1:2 461 0.316 2002 440 – S/2007 (119979) 1 2006 139 4090 8.403 BIN JPL LoMP LCDB
120347 Salacia CUB 901 0.344 2004 854 6.5 Actaea (Salacia I) 2006 286 5619 5.4938 BIN JPL LoMP LCDB
(123509) 2000 WK183 CUB 146 0.951 2000 106 – S/2007 (123509) 1 2005 101 2366 30.917 BIN JPL LoMP LCDB
134340 Pluto PLU 2376 0.511
0.018
0.016
0.012
0.0025		 1930 2380 153.2935 Charon (Pluto I) 1978 1212 19573 6.3872 BIN JPL LoMP LCDB
Nix (Pluto II) 2005 38 48694 24.8546
Hydra (Pluto III) 2005 39 64738 38.2018
Kerberos (Pluto IV) 2011 13 57783 32.1676
Styx (Pluto V) 2012 11 42656 20.1616
(134860) 2000 OJ67 CUB 175 0.783 2000 138 – S/2003 (134860) 1 2003 108 2270 22.0584 BIN JPL LoMP LCDB
136108 Haumea HAU 1425 0.232
0.116		 2003 1379 3.9154 Hiʻiaka (Haumea I) 2005 320 49880 49.462 BIN JPL LoMP LCDB
Namaka (Haumea II) 2005 170 25657 18.2783
136199 Eris SDO 2326 0.301 2003 2326 378.6 Dysnomia (Eris I) 2005 700 37460 15.7859 BIN JPL LoMP LCDB
136472 Makemake CUB 1440 0.122 2005 1430 7.771 S/2015 (136472) 1 2015 130 21100+ 12.4 BIN JPL LoMP LCDB
(139775) 2001 QG298 PLU 179 0.867 2001 135 13.7744 S/2004 (139775) 1 2003 117 172 0.5739 BIN JPL LoMP LCDB
148780 Altjira CUB 331 0.899 2001 246 – S/2007 (148780) 1 2006 221 9904 139.56 BIN JPL LoMP LCDB
(160091) 2000 OL67 CUB 74 0.759 2000 153 – S/2007 (160091) 1 2007 56 7695 347.085 BIN JPL LoMP LCDB
(160256) 2002 PD149 CUB 242 0.832 2002 186 – S/2007 (160256) 1 2007 155 24400 470 BIN JPL LoMP LCDB
174567 Varda CUB 792 0.513 2003 705 5.91 Ilmarë (Varda I) 2009 361 4800 5.7508 BIN JPL LoMP LCDB
(182933) 2002 GZ31 SDO 231 0.631 2002 195 – S/2006 (182933) 1 2006 123 2060 12 BIN JPL LoMP LCDB
(208996) 2003 AZ84 PLU 727 0.1 2003 723 13.44 S/2005 (208996) 1 2005 72 7200 12 BIN JPL LoMP LCDB
225088 Gonggong 3:10 1230 0.2 2007 1535 44.81 Xiangliu (Gonggong I) 2010 95 15000 6 BIN JPL LoMP LCDB
229762 Gǃkúnǁʼhòmdímà SDO 599 0.175 2007 590 11.05 Gǃòʼé ǃHú (Gǃkúnǁʼhòmdímà I) 2008 71 3600 5.9 BIN JPL LoMP LCDB
(275809) 2001 QY297 CUB 229 0.912 2001 169 11.68 S/2006 (275809) 1 2006 154 9960 138.11 BIN JPL LoMP LCDB
(303712) 2005 PR21 CUB 265 0.603 2005 227 – S/2007 (303712) 1 2007 137 3600 22 BIN JPL LoMP LCDB
341520 Mors–Somnus PLU 141 0.955 2007 102 9.28 Somnus 2007 97 21040 971.7 BIN JPL LoMP LCDB
(364171) 2006 JZ81 CUB 145 0.637 2006 122 – S/2006 (364171) 1 2006 78 33000 1500 BIN JPL LoMP LCDB
385446 Manwë 4:7 185 0.58 2003 160 – Thorondor (Manwë I) 2006 92 6674 110.176 BIN JPL LoMP LCDB
(469420) 2001 XP254 3:5 133 0.711 2001 108 – S/2008 (2001 XP254) 1 2008 77 1200 12 BIN JPL LoMP LCDB
(469505) 2003 FE128 1:2 221 0.735 2003 178 5.85 S/2010 (2003 FE128) 1 2010 131 2140 14 BIN JPL LoMP LCDB
(469509) 2003 HC57 CUB 306 0.95 2003 222 – S/2020 (469509) 1 2020 211 1960 - BIN JPL LoMP LCDB
(469514) 2003 QA91 CUB 260 0.955 2003 188 – S/2006 (2003 QA91) 1 2006 180 1900 9.1 BIN JPL LoMP LCDB
(469610) 2004 HF79 CUB 242 0.81 2004 188 – S/2019 (469610) 1 2019 153 3820 29 BIN JPL LoMP LCDB
469705 ǂKá̦gára CUB 174 0.762 2005 138 9.65 ǃHãunu (ǂKá̦gára I) 2009 105 7700 128.11 BIN JPL LoMP LCDB
(505447) 2013 SQ99 CUB 231 0.81 2013 180 – S/2017 (505447) 1 2017 146 13300 200 BIN JPL LoMP LCDB
(505476) 2013 UL15 CUB 212 0.79 2013 166 – S/2019 (505476) 1 2019 131 5370 59 BIN JPL LoMP LCDB
(506121) 2016 BP81 CUB 253 0.90 2016 188 6.85 S/2017 (506121) 1 2017 169 11300 140 BIN JPL LoMP LCDB
(508788) 2000 CQ114 CUB 175 0.871 2000 132 – S/2003 (2000 CQ114) 1 2003 115 6930 220.7 BIN JPL LoMP LCDB
(508869) 2002 VT130 CUB 324 0.817 2002 251 – S/2008 (2002 VT130) 1 2008 205 2490 9.8 BIN JPL LoMP LCDB
(511551) 2014 UD225 CUB 201 0.35 2013 190 – S/2017 (511551) 1 2017 66 21400 460 BIN JPL LoMP LCDB
(523624) 2008 CT190 SDO 350 0.83 2008 270 – S/2012 (2008 CT190) 1 2012 220 1300 3.3 BIN JPL LoMP LCDB
(523764) 2014 WC510 PLU 227 0.76 2011 181 – S/2018 (523764) 1 2018 138 349 0.87 BIN JPL LoMP LCDB
(523983) 1999 RY214 CUB 146 0.605 1999 125 – S/2008 (1999 RY214) 1 2008 76 1500 15 BIN JPL LoMP LCDB
(524217) 2001 RZ143 CUB 140 0.832 2001 108 – S/2001 (2001 RZ143) 1 2001 90 1560 17 BIN JPL LoMP LCDB
(524366) 2001 XR254 CUB 221 0.826 2001 171 – S/2005 (2001 XR254) 1 2006 140 9310 125.58 BIN JPL LoMP LCDB
(524531) 2002 XH91 CUB 350 0.619 2002 298 – S/2008 (2002 XH91) 1 2008 185 19900 190 BIN JPL LoMP LCDB
(525462) 2005 EO304 CUB 171 0.513 2005 152.4 – S/2005 (2005 EO304) 1 2005 78 69800 3579 BIN JPL LoMP LCDB
(532037) 2013 FY27 SDO 765 0.25 2013 740 – S/2018 (2013 FY27) 1 2018 190 9800 15 BIN JPL LoMP LCDB
1998 WV24 CUB 146 0.871 1998 110 – S/2007 (1998 WV24) 1 2007 96 1420 14 BIN JPL uTNO LCDB
1998 WW31 CUB 192 0.833 1998 148 – S/2000 (1998 WW31) 1 2000 123 22620 587.3 BIN JPL uTNO LCDB
1999 OJ4 CUB 104 0.96 1999 75 – S/2002 (1999 OJ4) 1 2002 72 3267 84.12 BIN JPL uTNO LCDB
1999 RT214 CUB 121 0.689 1999 100 – S/2006 (1999 RT214) 1 2006 69 3310 64 BIN JPL uTNO LCDB
1999 XY143 CUB 278 0.839 1999 213 – S/2008 (1999 XY143) 1 2008 179 2670 14 BIN JPL uTNO LCDB
2000 CF105 CUB 81 0.78 2000 63.6 – S/2002 (2000 CF105) 1 2002 50 33300 3989 BIN JPL uTNO LCDB
2000 QL251 1:2 206 0.967 2000 148 – S/2006 (2000 QL251) 1 2006 143 5002 56.451 BIN JPL uTNO LCDB
2000 WT169 CUB 265 0.82 2000 205 – S/2008 (2000 WT169) 1 2008 168 2600 14 BIN JPL uTNO LCDB
2001 FL185 CUB 167 0.617 2001 142 – S/2006 (2001 FL185) 1 2006 88 1900 17 BIN JPL uTNO LCDB
2001 QC298 CUB 303 0.817 2001 235 7.78 S/2002 (2001 QC298) 1 2002 192 3813 19.23 BIN JPL uTNO LCDB
2001 QQ322 CUB 231 0.912 2001 171 – S/2007 (2001 QQ322) 1 2007 156 3890 32 BIN JPL uTNO LCDB
2001 QW322 CUB 180 0.986 2001 128 – S/2001 (2001 QW322) 1 2001 126 102100 6280 BIN JPL uTNO LCDB
2002 VF130 CUB 160 0.867 2002 121 – S/2008 (2002 VF130) 1 2008 105 22400 760 BIN JPL uTNO LCDB
2003 HG57 CUB 221 1 2003 156 – S/2010 (2003 HG57) 1 2010 156 13200 210 BIN JPL uTNO LCDB
2003 QY90 CUB 114 0.986 2003 81 3.4 S/2003 (2003 QY90) 1 2003 80 8549 309.7 BIN JPL uTNO LCDB
2003 QR91 CUB 280 0.912 2003 207 – S/2007 (2003 QR91) 1 2007 189 1790 7.5 BIN JPL uTNO LCDB
2003 TJ58 CUB 83 0.787 2003 65 – S/2006 (2003 TJ58) 1 2006 51 3840 137.68 BIN JPL uTNO LCDB
2003 UN284 CUB 149 0.667 2003 124 – S/2003 (2003 UN284) 1 2003 83 54000 3180 BIN JPL uTNO LCDB
2003 WU188 CUB 220- 0.724 2003 178 – S/2007 (2003 WU188) 1 2007 129 1300 6.5 BIN JPL uTNO LCDB
2003 YS179 CUB 167 0.871 2003 126 – S/2008 (2003 YS179) 1 2008 110 7830 150 BIN JPL uTNO LCDB
2003 YU179 CUB 167 0.55 2003 146 – S/2008 (2003 YU179) 1 2008 80 2000 18 BIN JPL uTNO LCDB
2004 HD79 CUB 319 0.85 2004 243 8+ S/2019 (2004 HD79) 1 2019 206 2780 12 BIN JPL LCDB
2004 HK79 CUB 183 1.0 2004 129 – S/2019 (2004 HK79) 1 2019 129 3600 41 BIN JPL LCDB
2004 KB19 PLU 146 0.95 2004 105 – S/2012 (2004 KB19) 1 2012 100 3400 53 BIN JPL uTNO LCDB
2004 KE19 CUB 221 0.67 2004 184 – S/2019 (2004 KE19) 1 2019 123 4110 36 BIN JPL LCDB
2004 KH19 CUB 221 0.721 2004 179 – S/2011 (2004 KH19) 1 2011 129 13000 210 BIN JPL uTNO LCDB
2004 MU8 CUB 175 0.89 2004 131 2.5+ S/2019 (2004 MU8) 1 2019 116 5840 89 BIN JPL LCDB
2004 PB108 CUB 277 0.544 2004 243 – S/2006 (2004 PB108) 1 2006 132 10400 97.02 BIN JPL uTNO LCDB
2004 PV117 CUB 221 0.44 2004 203 – S/2019 (2004 PV117) 1 2019 89 6800 73 BIN JPL LCDB
2004 PW117 CUB 242 0.72 2004 196 – S/2019 (2004 PW117) 1 2019 141 23190 430 BIN JPL LCDB
2004 PX117 CUB 221 0.81 2004 172 – S/2019 (2004 PX117) 1 2019 139 5940 64 BIN JPL LCDB
2005 GD187 CUB 160 0.832 2005 123 – S/2009 (2005 GD187) 1 2009 102 7600 150 BIN JPL uTNO LCDB
2005 VZ122 CUB 133 0.398 2005 124 – S/2008 (2005 VZ122) 1 2008 49 2300 30 BIN JPL uTNO LCDB
2006 BR284 CUB 114 0.794 2006 89.8 – S/2006 (2006 BR284) 1 2006 71 25300 1501 BIN JPL uTNO LCDB
2006 CH69 CUB 129 0.817 2006 100 – S/2004 (2006 CH69) 1 2004 82 27000 1420 BIN JPL uTNO LCDB
2006 JV58 CUB 211 0.76 2006 168 – S/2019 (2006 JV58) 1 2019 127 4340 43 BIN JPL LCDB
2006 SF369 1:3 201 0.977 2006 144 – S/2007 (2006 SF369) 1 2007 141 3120 28 BIN JPL uTNO LCDB
2014 LQ28 CUB 320 0.83 2014 250 – S/2016 (2014 LQ28) 1 2016 210 24000 290 BIN JPL uTNO LCDB
2014 OS393
2015 QL14 CUB 180 0.9 2015 130 – S/2017 (2015 QL14) 1 2017 120 52000 2300 BIN JPL uTNO LCDB
2015 RB280 CUB 134 0.76 2015 107 – S/2019 (2015 RB280) 1 2019 81 6700 160 BIN JPL LCDB
2015 RP280 CUB 154 0.76 2015 123 – S/2019 (2015 RP280) 1 2019 93 5080 86 BIN JPL LCDB
2015 RT245 CUB 222 0.95 2015 161 – S/2019 (2015 RT245) 1 2019 153 14680 250 BIN JPL LCDB
2015 VM173 CUB 265 0.87 2015 200 – S/2019 (2015 VM173) 1 2019 174 5290 41 BIN JPL LCDB
2015 VW168 CUB 106 0.76 2015 84 – S/2019 (2015 VW168) 1 2019 64 5960 190 BIN JPL LCDB
HST5 – 190 1 2005 135 – n.a. 2005 135 16400 1000 BIN —

See also
  • Lists of astronomical objects
  • Subsatellite, also known as Moonmoon – A satellite that orbits a natural satellite
  • Yarkovsky–O'Keefe–Radzievskii–Paddack effect, also known as YORP effect – Second-order variation on the Yarkovsky effect that changes the rotation rate of a small body
  • Satellite system (astronomy)

References
  1. Johnston, Wm. Robert (23 January 2022). "Asteroids with Satellites". Johnston's Archive. Retrieved 13 February 2022.
  2. William J. Merline; Maria Martinez (26 October 2000). "Astronomers Image Double Asteroid". SwRI Press Release. Retrieved 27 November 2018. (mentions both 90 Antiope and 762 Pulcova)
  3. Dunham, David W.; Maley, Paul D. (December 1977). "Possible Observation of a Satellite of a Minor Planet". The Minor Planet Bulletin. 5: 16–17. Bibcode:1977MPBu....5...16D.
  4. "Satellites and Companions of Minor Planets". IAU / Minor Planet Center. 17 September 2009. Retrieved 27 November 2018.
  5. "90 Antiope: Raw Keck Image". SWrI Press Release. August 2000. Retrieved 27 November 2018.
  6. "IAUC 8732: S/2006 (624) 1". Central Bureau for Astronomical Telegrams. 21 July 2006. Retrieved 26 November 2018. (Satellite Discovery)
  7. Dunham, David W. (December 1978). "Satellite of Minor Planet 532 Herculina Discovered During Occultation". The Minor Planet Bulletin. 6: 13–14. Bibcode:1978MPBu....6...13D.
  8. Storrs, Alex; Weiss, Ben; Zellner, Ben; Burleson, Win; Sichitiu, Rukmini; Wells, Eddie; et al. (February 1999). "Imaging Observations of Asteroids with Hubble Space Telescope" (PDF). Icarus. 137 (2): 260–268. Bibcode:1999Icar..137..260S. doi:10.1006/icar.1999.6047. S2CID 274199. Archived from the original (PDF) on 14 June 2018.
  9. Hamilton, Thomas Wm. (27 August 2014). Impact Craters of Earth: with Selected Craters Elsewhere. Strategic Book Publishing & Rights Agency. p. 24. ISBN 9781631353536. Retrieved 28 February 2021.
  10. "Astronomers Discover Moon Orbiting Asteroid". SwRI. 1998. Retrieved 2 January 2019. (Eugenia AO image)
  11. Merline, W. J. (29 October 2001). "IAUC 7741: 2001fc; S/2001 (617) 1; C/2001 T1, C/2001 T2". Central Bureau for Astronomical Telegrams.
  12. Chiang, E.; Lithwick, Y.; Buie, M.; Grundy, W.; Holman, M.; A Brief History of Trans-Neptunian Space, to appear in Protostars and Planets V (August 2006) Final preprint on arXiv
  13. Daniel W. E. Green (11 August 2005). "IAUC 8582: Sats OF (87)". Central Bureau for Astronomical Telegrams. Retrieved 8 January 2011.
  14. Daniel W. E. Green (7 March 2007). "IAUC 8817: S/2004 (45) 1". Central Bureau for Astronomical Telegrams. Retrieved 8 January 2011.
  15. Marchis, Franck. "Franck Marchis Web Page (Principal Investigator, SETI Institute, UC Berkeley)". Department of Astronomy (University of California at Berkeley). Archived from the original on 10 November 2007. Retrieved 27 October 2009.
  16. Marchis, Franck (19 September 2008). "Two Companions Found Near Dog-Bone Asteroid". SETI Institute. Archived from the original on 27 September 2011. Retrieved 26 October 2009.
  17. Franck Marchis (21 August 2009). "The discovery of a new triple asteroid – (93) Minerva". Cosmic Diary Blog. Archived from the original on 9 June 2012. Retrieved 27 October 2009.
  18. Noll, Keith S. "Solar System binaries", Asteroids, Comets, Meteors, Proceedings of the 229th Symposium of the IAU, Rio de Janeiro, 2005, Cambridge University Press, 2006., pp. 301–318 Preprint
  19. T. Michałowski; et al. (2004). "Eclipsing binary asteroid 90 Antiope". Astronomy & Astrophysics. 423 (3): 1159–1168. Bibcode:2004A&A...423.1159M. doi:10.1051/0004-6361:20040449.
  20. Santos-Sanz, P.; et al. (2012). ""TNOs are Cool": A Survey of the Transneptunian Region IV. Size/albedo characterization of 15 scattered disk and detached objects observed with Herschel Space Observatory-PACS". Astronomy & Astrophysics. 541: A92. arXiv:1202.1481. Bibcode:2012A&A...541A..92S. doi:10.1051/0004-6361/201118541. S2CID 118600525.
  21. Marchis, F.; Baek, M.; Berthier, J.; Descamps, P.; et al. (2008). "Multiple Asteroid Systems: New Techniques to Study New Worlds" (PDF). Lunar and Planetary Institute. Retrieved 20 October 2009.
  22. Johnston, Wm. Robert (24 December 2021). "Asteroids/TNOs with Satellites list by type and presumed level of confirmation". Johnston's Archive. Retrieved 13 February 2022.
  23. Clark, Stephen (14 June 2022). "Ninth asteroid added to Lucy mission; optimism grows on solar array issue". Spaceflight Now. Retrieved 15 June 2022.
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