List of natural satellites

The Solar System's eight planets, and its nine most likely dwarf planets, are known to be orbited by at least 297 natural satellites, or moons. At least 19 of them are large enough to be gravitationally rounded; of these, all are covered by a crust of ice except for Earth's Moon and Jupiter's Io.[1] Several of the largest ones are in hydrostatic equilibrium and would therefore be considered dwarf planets or planets if they were in direct orbit around the Sun and not in their current states (orbiting planets or dwarf planets).

Moons are classed in two separate categories according to their orbits: regular moons, which have prograde orbits (they orbit in the direction of their planets' rotation) and lie close to the plane of their equators, and irregular moons, whose orbits can be pro- or retrograde (against the direction of their planets' rotation) and often lie at extreme angles to their planets' equators. Irregular moons are probably minor planets that have been captured from surrounding space. Most irregular moons are less than 10 kilometres (6.2 mi) in diameter.

The earliest published discovery of a moon other than Earth's was by Galileo Galilei, who discovered the four Galilean moons orbiting Jupiter in 1610. Over the following three centuries only a few more moons were discovered. Missions to other planets in the 1970s, most notably the Voyager 1 and 2 missions, saw a surge in the number of moons detected, and observations since the year 2000, using mostly large, ground-based optical telescopes, have discovered many more, all of which are irregular.

Moons by primary

Some moons, minor planets and comets of the Solar System to scale (major planets not to scale)

Selected moons, with Earth to scale. Nineteen moons are large enough to be round, and one, Titan, has a substantial atmosphere.

The number of moons discovered in each year until November 2019

Mercury, the smallest and innermost planet, has no moons, or at least none that can be detected to a diameter of 1.6 km (1.0 mi).[2] For a very short time in 1974, Mercury was thought to have a moon.

Venus also has no moons,[3] though reports of a moon around Venus have circulated since the 17th century.

Earth has one Moon, the largest moon of any rocky planet in the Solar System. Earth also has more than 20 known co-orbitals, including the asteroids 3753 Cruithne and 469219 Kamoʻoalewa, and the occasional temporary satellite, like 2020 CD₃; however, since they do not permanently orbit Earth, they are not considered moons. (See Other moons of Earth and Quasi-satellite.)

Mars has two known moons, Phobos and Deimos ("fear" and "dread", after attendants of Ares, the Greek god of war, equivalent to the Roman Mars). Searches for more satellites have been unsuccessful, putting the maximum radius of any other satellites at 90 m (100 yd).[4]

Jupiter has 95 moons with known orbits; 72 of them have received permanent designations, and 57 have been named. Its eight regular moons are grouped into the planet-sized Galilean moons and the far smaller Amalthea group. They were named after lovers of Zeus, the Greek equivalent of Jupiter. Among them is Ganymede, the largest and most massive moon in the Solar System. Its 87 known irregular moons are organized into two categories: prograde and retrograde. The prograde satellites consist of the Himalia group and three others in groups of one. The retrograde moons are grouped into the Carme, Ananke and Pasiphae groups.

Saturn has 146 moons with known orbits; 66 of them have received permanent designations, and 63 have been named. Most of them are quite small. Seven moons are large enough to be in hydrostatic equilibrium, including Titan, the second largest moon in the Solar System. Including these large moons, 24 of Saturn's moons are regular, and traditionally named after Titans or other figures associated with the mythological Saturn. The remaining 122 are irregular, and classified by their orbital characteristics into Inuit, Norse, and Gallic groups, and their names are chosen from the corresponding mythologies the groups are named after. The rings of Saturn are made up of icy objects ranging in size from one centimetre to hundreds of metres, each of which is on its own orbit about the planet. Thus, a precise number of Saturnian moons cannot be given, as there is no objective boundary between the countless small anonymous objects that form Saturn's ring system and the larger objects that have been named as moons. At least 150 "moonlets" embedded in the rings have been detected by the disturbance they create in the surrounding ring material, though this is thought to be only a small sample of the total population of such objects.

Uranus has 27 known moons, five of which are massive enough to have achieved hydrostatic equilibrium. There are 13 moons that orbit within Uranus's ring system, and another nine outer irregular moons. Unlike most planetary moons, which are named from antiquity, all the moons of Uranus are named after characters from the works of Shakespeare and Alexander Pope's work The Rape of the Lock.

Neptune has 14 known moons; the largest, Triton, accounts for more than 99.5 percent of all the mass orbiting the planet. Triton is large enough to have achieved hydrostatic equilibrium, but, uniquely for a large moon, has a retrograde orbit, suggesting it was a dwarf planet that was captured. Neptune also has seven known inner regular satellites, and six outer irregular satellites.

Pluto, a dwarf planet, has five moons. Its largest moon Charon, named after the ferryman who took souls across the River Styx, is more than half as large as Pluto itself, and large enough to orbit a point outside Pluto's surface. In effect, each orbits the other, forming 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.[5]

Among the other dwarf planets, Ceres has no known moons. It is 90 percent certain that Ceres has no moons larger than 1 km in size, assuming that they would have the same albedo as Ceres itself.[6] Eris has one large known moon, Dysnomia. Accurately determining its size is difficult: one indicative estimate of its radius is 350±57.5 km.[7]

Two objects were named as dwarf planets, under the expectation that they would prove to be so (though this remains uncertain). Haumea has two moons, Hiʻiaka and Namaka, of radii ~195 and ~100 km, respectively.[8] Makemake has one moon, discovered in April 2016.

A number of other objects in the Kuiper belt and scattered disk may turn out to be dwarf planets. Orcus, Quaoar, Gonggong, and Sedna are generally agreed to be dwarf planets among astronomers, and all but Sedna are known to have moons.[9] A number of other smaller objects, such as Salacia, Varda, and 2013 FY27, also have moons, although their dwarf planethood is more doubtful. This list includes all objects with a best estimated diameter above 700 km, including 2003 AZ84 whose satellite has not been seen since its initial discovery.

As of October 2022, 365 asteroid moons and 128 trans-Neptunian moons (including those of Pluto and the other dwarf planets) had been discovered.[10]

Summary – number of moons
Planet	Mercury	Venus	Earth	Mars	Jupiter	Saturn	Uranus	Neptune
Number of moons	0	0	1	2	95	146	27	14

Likely dwarf planets	Ceres	Orcus	Pluto	Haumea	Quaoar	Makemake	Gonggong	Eris	Sedna
Number of moons	0	1	5	2	1	1	1	1	0

Possible dwarf planet candidates	2003 AZ₈₄	Ixion	Salacia	2002 MS₄	Varda	2002 AW₁₉₇	2013 FY₂₇
Number of moons	1	0	1	0	1	0	1

Minor planet
See list

Due to Earth's varying distance from these planets (as well as their distance to the Sun), the limits at which we are able to detect new moons are very inconsistent. As the below graph demonstrates, the absolute magnitude (total inherent brightness, abbreviated H) of moons we have detected around planets peaks at H = 17 for Jupiter, H = 16 for Saturn, H = 13 for Uranus, and H = 11 for Neptune. Smaller moons may (and most likely do) exist around each of these planets, but are currently undetectable from Earth. Although spacecraft have visited all of these planets, Earth-based telescopes continue to outperform them in moon-detection ability due to their greater availability for wide-field surveys.

Planetary moons by absolute magnitude

List

This is a list of the recognized moons of the planets and of the largest potential dwarf planets of the Solar System, ordered by their official Roman numeral designations. Moons that do not yet have official Roman numeral designations (because their orbits are not yet known well enough) are listed after those that do.

The 19 moons that are known to be large enough to have been rounded by their own gravity are listed in bold. The seven largest moons, which are larger than any of the known dwarf planets, are listed in bold and italic. Sidereal period differs from semi-major axis because a moon's speed depends both on the mass of its primary and its distance from it.

Satellites of planets
Satellite of Earth	Satellites of Jupiter	Satellites of Uranus
Satellites of Mars	Satellites of Saturn	Satellites of Neptune
Satellites of generally agreed dwarf planets
Satellite of Orcus	Satellites of Pluto	Satellites of Haumea
Satellite of Quaoar	Satellite of Makemake	Satellite of Gonggong
Satellite of Eris
Satellites of other dwarf planet candidates
Satellite of 2003 AZ84	Satellite of Salacia	Satellite of Varda
Satellite of 2013 FY27

Name	Parent	Numeral	Mean radius (km)	Orbital semi-major axis (km)	Sidereal period (d) (r = retrograde)	Discovery year	Year Announced	Discovered by	Notes	Ref(s)
Moon	Earth	I (1)	1,738	384,399	27.321582	Prehistoric	Prehistory	—	Synchronous rotation (Binary)	[11]
Phobos	Mars	I (1)	11.267	9,380	0.319	1877	1877	Hall		[12][13][14]
Deimos	Mars	II (2)	6.2±0.18	23,460	1.262	1877	1877	Hall		[12][13][14]
Io	Jupiter	I (1)	1,821.6±0.5	421,800	1.769	1610	1610	Galileo	Main-group moon (Galilean)	[14][15]
Europa	Jupiter	II (2)	1,560.8±0.5	671,100	3.551	1610	1610	Galileo	Main-group moon (Galilean)	[14][15]
Ganymede	Jupiter	III (3)	2,634.1±0.3	1,070,400	7.155	1610	1610	Galileo	Main-group moon (Galilean)	[14][15]
Callisto	Jupiter	IV (4)	2,410.3±1.5	1,882,700	16.69	1610	1610	Galileo	Main-group moon (Galilean)	[14][15]
Amalthea	Jupiter	V (5)	83.5±2	181,400	0.498	1892	1892	Barnard	Inner moon (Amalthea)	[13][14][16]
Himalia	Jupiter	VI (6)	69.8	11,461,000	250.56	1904	1905	Perrine	Prograde irregular (Himalia)	[13][14][17][18]
Elara	Jupiter	VII (7)	43	11,741,000	259.64	1905	1905	Perrine	Prograde irregular (Himalia)	[13][14][19]
Pasiphae	Jupiter	VIII (8)	30	23,624,000	743.63 (r)	1908	1908	Melotte	Retrograde irregular (Pasiphae)	[13][14][20]
Sinope	Jupiter	IX (9)	19	23,939,000	758.90 (r)	1914	1914	Nicholson	Retrograde irregular (Pasiphae)	[13][14][21]
Lysithea	Jupiter	X (10)	18	11,717,000	259.20	1938	1938	Nicholson	Prograde irregular (Himalia)	[13][14][22]
Carme	Jupiter	XI (11)	23	23,404,000	734.17 (r)	1938	1938	Nicholson	Retrograde irregular (Carme)	[13][14][22]
Ananke	Jupiter	XII (12)	14	21,276,000	629.77 (r)	1951	1951	Nicholson	Retrograde irregular (Ananke)	[13][14][23]
Leda	Jupiter	XIII (13)	10	11,165,000	240.92	1974	1974	Kowal	Prograde irregular (Himalia)	[13][14][24]
Thebe	Jupiter	XIV (14)	49.3±2.0	221,900	0.675	1979	1980	Synnott (Voyager 1)	Inner moon (Amalthea)	[13][14][25]
Adrastea	Jupiter	XV (15)	8.2±2.0	129,000	0.298	1979	1979	Jewitt, Danielson (Voyager 1)	Inner moon (Amalthea)	[13][14][26]
Metis	Jupiter	XVI (16)	21.5±2.0	128,000	0.295	1979	1980	Synnott (Voyager 1)	Inner moon (Amalthea)	[13][14][27]
Callirrhoe	Jupiter	XVII (17)	4.5	24,103,000	758.77 (r)	1999	2000	Scotti, Spahr, McMillan, Larsen, Montani, Gleason, Gehrels	Retrograde irregular (Pasiphae)	[13][14][28]
Themisto	Jupiter	XVIII (18)	4	7,284,000	130.02	1975/2000	1975/2000	Kowal and Roemer (original); Sheppard, Jewitt, Fernández, Magnier (rediscovery)	Prograde irregular (Themisto)	[13][14][29][30]
Megaclite	Jupiter	XIX (19)	2.7	23,493,000	752.86 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Pasiphae)	[13][14][31]
Taygete	Jupiter	XX (20)	2.5	23,280,000	732.41 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[13][14][31]
Chaldene	Jupiter	XXI (21)	1.9	23,100,000	723.72 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[13][14][31]
Harpalyke	Jupiter	XXII (22)	2.2	20,858,000	623.32 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Ananke)	[13][14][31]
Kalyke	Jupiter	XXIII (23)	2.6	23,483,000	742.06 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[13][14][31]
Iocaste	Jupiter	XXIV (24)	2.6	21,060,000	631.60 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Ananke)	[13][14][31]
Erinome	Jupiter	XXV (25)	1.6	23,196,000	728.46 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[13][14][31]
Isonoe	Jupiter	XXVI (26)	1.9	23,155,000	726.23 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Carme)	[13][14][31]
Praxidike	Jupiter	XXVII (27)	3.5	20,908,000	625.39 (r)	2000	2001	Sheppard, Jewitt, Fernández, Magnier, Dahm, Evans	Retrograde irregular (Ananke)	[13][14][31]
Autonoe	Jupiter	XXVIII (28)	2	24,046,000	760.95 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)
Thyone	Jupiter	XXIX (29)	2	20,939,000	627.21 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[13][14][32]
Hermippe	Jupiter	XXX (30)	2	21,131,000	633.9 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[13][14][32]
Aitne	Jupiter	XXXI (31)	1.5	23,229,000	730.18 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Carme)	[13][14][32]
Eurydome	Jupiter	XXXII (32)	1.5	22,865,000	717.33 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[13][14][32]
Euanthe	Jupiter	XXXIII (33)	1.5	20,797,000	620.49 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[13][14][32]
Euporie	Jupiter	XXXIV (34)	1	19,304,000	550.74 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[13][14][32]
Orthosie	Jupiter	XXXV (35)	1	20,720,000	622.56 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Ananke)	[13][14][32]
Sponde	Jupiter	XXXVI (36)	1	23,487,000	748.34 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[13][14][32]
Kale	Jupiter	XXXVII (37)	1	23,217,000	729.47 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Carme)	[13][14][32]
Pasithee	Jupiter	XXXVIII (38)	1	23,004,000	719.44 (r)	2001	2002	Sheppard, Jewitt, Kleyna	Retrograde irregular (Carme)	[13][14][32]
Hegemone	Jupiter	XXXIX (39)	1.5	23,577,000	739.88 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Pasiphae)	[13][14]
Mneme	Jupiter	XL (40)	1	21,035,000	620.04 (r)	2003	2003	Gladman, Allen	Retrograde irregular (Ananke)	[13][14]
Aoede	Jupiter	XLI (41)	2	23,980,000	761.50 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Pasiphae)	[13][14]
Thelxinoe	Jupiter	XLII (42)	1	21,164,000	628.09 (r)	2003	2004	Sheppard, Jewitt, Kleyna, Gladman, Kavelaars, Petit, Allen	Retrograde irregular (Ananke)	[13][14]
Arche	Jupiter	XLIII (43)	1.5	23,355,000	731.95 (r)	2002	2002	Sheppard, Meech, Hsieh, Tholen, Tonry	Retrograde irregular (Carme)	[13][14][32]
Kallichore	Jupiter	XLIV (44)	1	23,288,000	728.73 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Carme)	[13][14]
Helike	Jupiter	XLV (45)	2	21,069,000	626.32 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Ananke)	[13][14]
Carpo	Jupiter	XLVI (46)	1.5	17,058,000	456.30	2003	2003	Sheppard, Gladman, Kavelaars, Petit, Allen, Jewitt, Kleyna	Prograde irregular (Carpo)	[13][14]
Eukelade	Jupiter	XLVII (47)	2	23,328,000	730.47 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Carme)	[13][14]
Cyllene	Jupiter	XLVIII (48)	1	23,809,000	752 (r)	2003	2003	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[13][14]
Kore	Jupiter	XLIX (49)	1	24,543,000	779.17 (r)	2003	2003	Sheppard, Jewitt, Kleyna	Retrograde irregular (Pasiphae)	[13][14]
Herse	Jupiter	L (50)	1	22,983,000	714.51 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Carme)	[13][14]
S/2010 J 1	Jupiter	LI (51)	1	23,314,300	723.2 (r)	2010	2011	Jacobson, Brozović, Gladman, Alexandersen	Retrograde irregular (Carme)	[33]
S/2010 J 2	Jupiter	LII (52)	0.5	20,307,200	588.1 (r)	2010	2011	Veillet	Retrograde irregular (Ananke)	[33]
Dia	Jupiter	LIII (53)	2	12,118,000	287.0	2000	2001	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Prograde irregular (Himalia)	[33]
S/2016 J 1	Jupiter	LIV (54)	1	20,595,500	602.7 (r)	2016	2017	Sheppard	Retrograde irregular (Ananke)	[33]
S/2003 J 18	Jupiter	LV (55)	1	20,274,000	588.0 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Ananke)	[33]
S/2011 J 2	Jupiter	LVI (56)	0.5	23,329,700	726.8 (r)	2011	2012	Sheppard	Retrograde irregular (Pasiphae)	[33]
Eirene	Jupiter	LVII (57)	2	23,731,800	759.7 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Carme)	[33]
Philophrosyne	Jupiter	LVIII (58)	1	22,820,000	701.3 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Pasiphae)	[33]
S/2017 J 1	Jupiter	LIX (59)	2	23,484,000	734.2 (r)	2017	2017	Sheppard	Retrograde irregular (Pasiphae)	[33]
Eupheme	Jupiter	LX (60)	1	21,199,710	627.8 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Ananke)	[33]
S/2003 J 19	Jupiter	LXI (61)	1	22,757,000	697.6 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Carme)	[33]
Valetudo	Jupiter	LXII (62)	0.5	18,928,100	532.0	2016	2018	Sheppard	Prograde irregular (Valetudo)	[33]
S/2017 J 2	Jupiter	LXIII (63)	1	23,241,000	723.8 (r)	2017	2018	Sheppard	Retrograde irregular (Carme)	[33]
S/2017 J 3	Jupiter	LXIV (64)	1	20,639,300	605.8 (r)	2017	2018	Sheppard	Retrograde irregular (Ananke)	[33]
Pandia	Jupiter	LXV (65)	1.5	11,494,800	251.8	2017	2018	Sheppard	Prograde irregular (Himalia)	[33]
S/2017 J 5	Jupiter	LXVI (66)	1	23,169,400	720.5 (r)	2017	2018	Sheppard	Retrograde irregular (Carme)	[33]
S/2017 J 6	Jupiter	LXVII (67)	1	22,394,700	684.7 (r)	2017	2018	Sheppard	Retrograde irregular (Pasiphae)	[33]
S/2017 J 7	Jupiter	LXVIII (68)	1	20,571,500	602.8 (r)	2017	2018	Sheppard	Retrograde irregular (Ananke)	[33]
S/2017 J 8	Jupiter	LXIX (69)	0.5	23,174,400	720.7 (r)	2017	2018	Sheppard	Retrograde irregular (Carme)	[33]
S/2017 J 9	Jupiter	LXX (70)	1	21,430,000	640.9 (r)	2017	2018	Sheppard	Retrograde irregular (Ananke)	[33]
Ersa	Jupiter	LXXI (71)	1.5	11,453,000	250.4	2018	2018	Sheppard	Prograde irregular (Himalia)	[33]
S/2011 J 1	Jupiter	LXXII (72)	0.5	20,155,300	580.7 (r)	2011	2012	Sheppard	Retrograde irregular (Carme)	[33]
S/2003 J 2	Jupiter	—	1	20,554,400	602.02 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Ananke)	[13][14]
S/2003 J 4	Jupiter	—	1	22,048,600	668.85 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández, Hsieh	Retrograde irregular (Pasiphae)	[13][14]
S/2003 J 9	Jupiter	—	0.5	24,168,700	767.6 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Carme)	[13][34]
S/2003 J 10	Jupiter	—	1	22,896,000	707.78 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Carme?)	[13][14]
S/2003 J 12	Jupiter	—	0.5	21,557,700	646.64 (r)	2003	2003	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Ananke)	[13][14]
S/2003 J 16	Jupiter	—	1	20,512,500	600.18 (r)	2003	2003	Gladman, Sheppard, Jewitt, Kleyna, Kavelaars, Petit, Allen	Retrograde irregular (Ananke)	[13][35]
S/2003 J 23	Jupiter	—	1	24,678,100	792.00 (r)	2003	2004	Sheppard, Jewitt, Kleyna, Fernández	Retrograde irregular (Pasiphae)	[13][14]
S/2003 J 24	Jupiter	—	1.5	23,088,000	715.4 (r)	2003	2021	Sheppard, Jewitt, Kleyna, Gladman, Veillet	Retrograde irregular (Carme)	[36]
S/2011 J 3	Jupiter	—	1.5	11,797,200	261.77	2011	2022	Sheppard	Prograde irregular (Himalia)	[37]
S/2016 J 3	Jupiter	—	1	22,213,500	676.37 (r)	2016	2023	Sheppard	Retrograde irregular (Carme)	[38]
S/2016 J 4	Jupiter	—	1	23,664,100	743.69 (r)	2016	2023	Sheppard	Retrograde irregular (Pasiphae)	[39]
S/2018 J 2	Jupiter	—	1.5	11,467,500	250.88	2018	2022	Sheppard	Prograde irregular (Himalia)	[40]
S/2018 J 3	Jupiter	—	0.5	22,826,600	704.56 (r)	2018	2023	Sheppard	Retrograde irregular (Carme)	[41]
S/2018 J 4	Jupiter	—	1	16,504,300	433.16	2018	2023	Sheppard	Prograde irregular (Carpo)	[42]
S/2021 J 1	Jupiter	—	0.5	20,667,200	606.99 (r)	2021	2023	Sheppard	Retrograde irregular (Ananke)	[43]
S/2021 J 2	Jupiter	—	0.5	21,140,600	627.96 (r)	2021	2023	Sheppard	Retrograde irregular (Ananke)	[44]
S/2021 J 3	Jupiter	—	1	21,495,700	643.85 (r)	2021	2023	Sheppard	Retrograde irregular (Ananke)	[45]
S/2021 J 4	Jupiter	—	0.5	22,946,700	710.13 (r)	2021	2023	Sheppard	Retrograde irregular (Carme)	[46]
S/2021 J 5	Jupiter	—	1	22,831,800	704.80 (r)	2021	2023	Sheppard, Tholen, Trujillo	Retrograde irregular (Carme)	[47]
S/2021 J 6	Jupiter	—	0.5	23,427,200	732.55 (r)	2021	2023	Sheppard, Tholen, Trujillo	Retrograde irregular (Carme)	[48]
S/2022 J 1	Jupiter	—	0.5	22,015,500	667.34 (r)	2022	2023	Sheppard	Retrograde irregular (Carme)	[49]
S/2022 J 2	Jupiter	—	0.5	22,413,200	685.51 (r)	2022	2023	Sheppard	Retrograde irregular (Carme)	[50]
S/2022 J 3	Jupiter	—	0.5	20,912,400	617.82 (r)	2022	2023	Sheppard	Retrograde irregular (Ananke)	[51]
Mimas	Saturn	I (1)	198.2±0.4	185,540	0.942	1789	1789	Herschel	Main-group moon	[13][14]
Enceladus	Saturn	II (2)	252.1±0.2	238,040	1.370	1789	1789	Herschel	Main-group moon	[13][14]
Tethys	Saturn	III (3)	533.1±0.7	294,670	1.888	1684	1686	Cassini	Main-group moon (Sidera Lodoicea)	[13][14]
Dione	Saturn	IV (4)	561.4±0.4	377,420	2.737	1684	1686	Cassini	Main-group moon (Sidera Lodoicea)	[13][14]
Rhea	Saturn	V (5)	763.8±1.0	527,070	4.518	1672	1673	Cassini	Main-group moon (Sidera Lodoicea)	[13][14]
Titan	Saturn	VI (6)	2,574.73±0.09	1,221,870	15.95	1655	1656	Huygens	Main-group moon	[13][14]
Hyperion	Saturn	VII (7)	135	1,500,880	21.28	1848	1848	W.Bond, G. Bond, and Lassell	Main-group moon	[13][14]
Iapetus	Saturn	VIII (8)	735.6±1.5	3,560,840	79.33	1671	1673	Cassini	Main-group moon (Sidera Lodoicea)	[13][14]
Phoebe	Saturn	IX (9)	106.5±0.7	12,947,780	550.31 (r)	1898	1899	Pickering	Retrograde irregular (Norse)	[13][14]
Janus	Saturn	X (10)	89.5±1.4	151,460	0.695	1966	1967	Dollfus; Voyager 1 (confirmed)	Inner moon (co-orbital)	[13][14]
Epimetheus	Saturn	XI (11)	58.1±1.8	151,410	0.694	1966	1967	Walker; Voyager 1 (confirmed)	Inner moon (co-orbital)	[13][14]
Helene	Saturn	XII (12)	17.6±0.4	377,420	2.737	1980	1980	Laques, Lecacheux	Main-group trojan	[13][14]
Telesto	Saturn	XIII (13)	12.4±0.4	294,710	1.888	1980	1980	Smith, Reitsema, Larson, Fountain (Voyager 1)	Main-group trojan	[13][14]
Calypso	Saturn	XIV (14)	10.7±0.7	294,710	1.888	1980	1980	Pascu, Seidelmann, Baum, Currie	Main-group trojan	[13][14]
Atlas	Saturn	XV (15)	15.1±0.9	137,670	0.602	1980	1980	Terrile (Voyager 1)	Inner moon (shepherd)	[13][14]
Prometheus	Saturn	XVI (16)	43.1±2.7	139,380	0.613	1980	1980	Collins (Voyager 1)	Inner moon (shepherd)	[13][14]
Pandora	Saturn	XVII (17)	40.7±1.5	141,720	0.629	1980	1980	Collins (Voyager 1)	Inner moon (shepherd)	[13][14]
Pan	Saturn	XVIII (18)	14.1	133,580	0.575	1981	1990	Showalter (Voyager 2)	Inner moon (shepherd)	[13][14]
Ymir	Saturn	XIX (19)	9	23,140,400	1,315.58 (r)	2000	2000	Gladman	Retrograde irregular (Norse)	[13][14]
Paaliaq	Saturn	XX (20)	11	15,200,000	686.95	2000	2000	Gladman	Prograde irregular (Inuit)	[13][14]
Tarvos	Saturn	XXI (21)	7.5	17,983,000	926.23	2000	2000	Gladman, Kavelaars	Prograde irregular (Gallic)	[13][14]
Ijiraq	Saturn	XXII (22)	6	11,124,000	451.42	2000	2000	Gladman, Kavelaars	Prograde irregular (Inuit)	[13][14]
Suttungr	Saturn	XXIII (23)	3.5	19,459,000	1,016.67 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[13][14]
Kiviuq	Saturn	XXIV (24)	8	11,110,000	449.22	2000	2000	Gladman	Prograde irregular (Inuit)	[13][14]
Mundilfari	Saturn	XXV (25)	3.5	18,628,000	952.77 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[13][14]
Albiorix	Saturn	XXVI (26)	16	16,182,000	783.45	2000	2000	Holman, Spahr	Prograde irregular (Gallic)	[13][14]
Skathi	Saturn	XXVII (27)	4	15,540,000	728.20 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[13][14]
Erriapus	Saturn	XXVIII (28)	5	17,343,000	871.19	2000	2000	Gladman, Kavelaars	Prograde irregular (Gallic)	[13][14]
Siarnaq	Saturn	XXIX (29)	20	18,015,400	896.44	2000	2000	Gladman, Kavelaars	Prograde irregular (Inuit)	[13][14]
Thrymr	Saturn	XXX (30)	3.5	20,314,000	1,094.11 (r)	2000	2000	Gladman, Kavelaars	Retrograde irregular (Norse)	[13][14]
Narvi	Saturn	XXXI (31)	3.5	19,007,000	1,003.86 (r)	2003	2003	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[13][14]
Methone	Saturn	XXXII (32)	1.45	194,440	1.010	2004	2004	Porco, Charnoz, Brahic, Dones (Cassini–Huygens)	Alkyonide moon	[14]
Pallene	Saturn	XXXIII (33)	2.22	212,280	1.154	2004	2004	Gordon, Murray, Beurle, et al. (Cassini–Huygens)	Alkyonide moon	[14]
Polydeuces	Saturn	XXXIV (34)	1.3	377,200	2.737	2004	2004	Porco et al. (Cassini–Huygens)	Main-group trojan	[14]
Daphnis	Saturn	XXXV (35)	3.8±0.8	136,500	0.594	2005	2005	Porco et al. (Cassini–Huygens)	Inner moon (shepherd)	[14]
Aegir	Saturn	XXXVI (36)	3	20,751,000	1,117.52 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Bebhionn	Saturn	XXXVII (37)	3	17,119,000	834.84	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (Gallic)	[13][14]
Bergelmir	Saturn	XXXVIII (38)	3	19,336,000	1,005.74 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Bestla	Saturn	XXXIX (39)	3.5	20,192,000	1,088.72 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Farbauti	Saturn	XL (40)	2.5	20,377,000	1,085.55 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Fenrir	Saturn	XLI (41)	2	22,454,000	1,260.35 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Fornjot	Saturn	XLII (42)	3	25,146,000	1,494.2 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Hati	Saturn	XLIII (43)	3	19,846,000	1,038.61 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
Hyrrokkin	Saturn	XLIV (44)	4	18,437,000	931.86 (r)	2004	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Kari	Saturn	XLV (45)	3.5	22,089,000	1,230.97 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Loge	Saturn	XLVI (46)	3	23,058,000	1,311.36 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Skoll	Saturn	XLVII (47)	3	17,665,000	878.29 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Surtur	Saturn	XLVIII (48)	3	22,704,000	1,297.36 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Anthe	Saturn	XLIX (49)	0.9	197,700	1.0365	2007	2007	Porco et al. (Cassini–Huygens)	Alkyonide moon	[52]
Jarnsaxa	Saturn	L (50)	3	18,811,000	964.74 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Greip	Saturn	LI (51)	3	18,206,000	921.19 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
Tarqeq	Saturn	LII (52)	3.5	18,009,000	887.48	2007	2007	Sheppard, Jewitt, Kleyna	Prograde irregular (Inuit)	[14]
Aegaeon	Saturn	LIII (53)	0.33	167,500	0.808	2008	2009	Cassini Imaging Science Team Cassini–Huygens	G-ring moonlet	[53][54]
Gridr	Saturn	LIV (54)	3	19,418,000	1,010.55 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[55]
Angrboda	Saturn	LV (55)	3	20,636,000	1,107.13 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[56]
Skrymir	Saturn	LVI (56)	4	21,163,000	1,149.82 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[57]
Gerd	Saturn	LVII (57)	4	21,174,000	1,150.69 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[58]
S/2004 S 26	Saturn	LVIII (58)	4	26,676,000	1,627.18 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[59]
Eggther	Saturn	LIX (59)	6	19,976,000	1,054.45 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden, Jacobson	Retrograde irregular (Norse)	[60]
S/2004 S 29	Saturn	LX (60)	4	16,981,000	826.44	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (Gallic)	[61]
Beli	Saturn	LXI (61)	3	20,396,000	1,087.84 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[62]
Gunnlod	Saturn	LXII (62)	4	21,214,000	1,153.96 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[63]
Thiazzi	Saturn	LXIII (63)	4	24,168,000	1,403.18 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[64]
S/2004 S 34	Saturn	LXIV (64)	3	24,299,000	1,414.59 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[65]
Alvaldi	Saturn	LXV (65)	6	22,412,000	1,253.08 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[66]
Geirrod	Saturn	LXVI (66)	4	21,908,000	1,211.02 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[67]
S/2004 S 7	Saturn	—	3	20,999,000	1,140.24 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[13][14]
S/2004 S 12	Saturn	—	2.5	19,878,000	1,046.19 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse)	[13][14]
S/2004 S 13	Saturn	—	3	18,404,000	933.48 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[13][14]
S/2004 S 17	Saturn	—	2	19,447,000	1,014.70 (r)	2004	2005	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[13][14]
S/2004 S 21	Saturn	—	3	22,645,000	1,272.61 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[68]
S/2004 S 24	Saturn	—	3	22,901,000	1,294.25	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (group unknown, possibly Gallic)	[69]
S/2004 S 28	Saturn	—	4	22,020,000	1,220.31 (r)	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Retrograde irregular (Norse?)	[70]
S/2004 S 31	Saturn	—	4	17,568,000	869.65	2004	2019	Sheppard, Jewitt, Kleyna, Marsden	Prograde irregular (Inuit)	[71]
S/2004 S 36	Saturn	—	3	23,192,000	1,319.07 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[72]
S/2004 S 37	Saturn	—	4	15,892,000	748.18 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[73]
S/2004 S 39	Saturn	—	3	23,575,000	1,351.83 (r)	2004	2019	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[74]
S/2004 S 40	Saturn	—	2	16,075,600	765.92 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[75]
S/2004 S 41	Saturn	—	2	18,095,000	895.76 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[76]
S/2004 S 42	Saturn	—	2	18,240,800	910.61 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[77]
S/2004 S 43	Saturn	—	2	18,935,000	971.48 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[78]
S/2004 S 44	Saturn	—	2.5	19,515,400	1,014.98 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[79]
S/2004 S 45	Saturn	—	2	19,693,600	1,058.95 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[80]
S/2004 S 46	Saturn	—	1.5	20,513,000	1,107.57 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[81]
S/2004 S 47	Saturn	—	2	16,050,600	755.69 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[82]
S/2004 S 48	Saturn	—	2	22,136,700	1,248.52 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[83]
S/2004 S 49	Saturn	—	2	22,399,700	1,290.34 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[84]
S/2004 S 50	Saturn	—	1.5	22,346,000	1,219.11 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[85]
S/2004 S 51	Saturn	—	2	25,208,200	1,544.65 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[86]
S/2004 S 52	Saturn	—	1.5	26,448,100	1,573.49 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[87]
S/2004 S 53	Saturn	—	2	23,279,800	1,367.72 (r)	2004	2023	Sheppard et al.	Retrograde irregular (Norse)	[88]
S/2005 S 4	Saturn	—	2.5	11,324,500	448.63	2005	2023	Sheppard et al.	Prograde irregular (Inuit)	[89]
S/2005 S 5	Saturn	—	1.5	21,366,200	1,138.62 (r)	2005	2023	Sheppard et al.	Retrograde irregular (Norse)	[90]
S/2006 S 1	Saturn	—	3	18,790,000	963.37 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
S/2006 S 3	Saturn	—	3	22,096,000	1,227.21 (r)	2006	2006	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
S/2006 S 9	Saturn	—	1.5	14,406,600	648.71 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[91]
S/2006 S 10	Saturn	—	1.5	18,979,900	965.26 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[92]
S/2006 S 11	Saturn	—	1.5	19,711,900	1,018.45 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[93]
S/2006 S 12	Saturn	—	2	19,569,800	1,043.16	2006	2023	Sheppard et al.	Prograde irregular (group unknown, possibly Gallic)	[94]
S/2006 S 13	Saturn	—	2	19,953,800	1,061.74 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[95]
S/2006 S 14	Saturn	—	1.5	21,062,100	1,150.64 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[96]
S/2006 S 15	Saturn	—	2	21,799,400	1,183.57 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[97]
S/2006 S 16	Saturn	—	1.5	21,720,700	1,217.36 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[98]
S/2006 S 17	Saturn	—	2	22,384,900	1,262.48 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[99]
S/2006 S 18	Saturn	—	2	22,760,700	1,324.09 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[100]
S/2006 S 19	Saturn	—	2	23,801,100	1,324.68 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[101]
S/2006 S 20	Saturn	—	2.5	13,193,800	563.89 (r)	2006	2023	Sheppard et al.	Retrograde irregular (Norse)	[102]
S/2007 S 2	Saturn	—	3	16,725,000	808.08 (r)	2007	2007	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse)	[14]
S/2007 S 3	Saturn	—	3	18,975,000	977.8 (r)	2007	2007	Sheppard, Jewitt, Kleyna	Retrograde irregular (Norse?)	[14]
S/2007 S 5	Saturn	—	2	15,835,700	748.50 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[103]
S/2007 S 6	Saturn	—	1.5	18,544,900	944.31 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[104]
S/2007 S 7	Saturn	—	2	15,931,700	742.79 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[105]
S/2007 S 8	Saturn	—	2	17,049,000	826.94	2007	2023	Sheppard et al.	Prograde irregular (Gallic)	[106]
S/2007 S 9	Saturn	—	2	20,174,600	1,099.69 (r)	2007	2023	Sheppard et al.	Retrograde irregular (Norse)	[107]
S/2009 S 1	Saturn	—	0.15	117,000	0.471	2009	2009	Cassini Imaging Science Team Cassini–Huygens	B-ring moonlet	[108]
S/2019 S 1	Saturn	—	3	11,221,000	443.8	2019	2021	Ashton, Gladman, Petit, Alexandersen	Prograde irregular (Inuit)	[109]
S/2019 S 2	Saturn	—	1.5	16,559,900	796.22 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[110]
S/2019 S 3	Saturn	—	2	17,077,200	836.68 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[111]
S/2019 S 4	Saturn	—	1.5	17,956,700	898.40 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[112]
S/2019 S 5	Saturn	—	1.5	19,076,900	971.54 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[113]
S/2019 S 6	Saturn	—	2	18,198,700	905.41	2019	2023	Ashton et al.	Prograde irregular (Inuit)	[114]
S/2019 S 7	Saturn	—	2	20,181,300	1,093.86 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[115]
S/2019 S 8	Saturn	—	2	20,284,400	1,080.60 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[116]
S/2019 S 9	Saturn	—	2	20,359,000	1,104.27 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[117]
S/2019 S 10	Saturn	—	1.5	20,713,400	1,129.53 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[118]
S/2019 S 11	Saturn	—	2	20,663,700	1,097.33 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[119]
S/2019 S 12	Saturn	—	2	20,904,500	1,130.40 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[120]
S/2019 S 13	Saturn	—	1.5	20,965,800	1,132.90 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[121]
S/2019 S 14	Saturn	—	2	17,853,000	902.00	2019	2023	Ashton et al.	Prograde irregular (Inuit)	[122]
S/2019 S 15	Saturn	—	1.5	21,189,700	1,156.21 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[123]
S/2019 S 16	Saturn	—	1.5	23,266,700	1,360.26 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[124]
S/2019 S 17	Saturn	—	2	22,724,100	1,322.15 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[125]
S/2019 S 18	Saturn	—	1.5	23,140,700	1,349.74 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[126]
S/2019 S 19	Saturn	—	1.5	23,047,200	1,342.57 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[127]
S/2019 S 20	Saturn	—	1.5	23,678,600	1,343.58 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[128]
S/2019 S 21	Saturn	—	2	26,439,000	1,572.06 (r)	2019	2023	Ashton et al.	Retrograde irregular (Norse)	[129]
S/2020 S 1	Saturn	—	2	11,338,700	450.83	2020	2023	Ashton et al.	Prograde irregular (Inuit)	[130]
S/2020 S 2	Saturn	—	1.5	17,869,300	907.00 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[131]
S/2020 S 3	Saturn	—	1.5	18,054,700	896.35	2020	2023	Ashton et al.	Prograde irregular (Inuit)	[132]
S/2020 S 4	Saturn	—	1.5	18,235,500	910.34	2020	2023	Ashton et al.	Prograde irregular (Gallic)	[133]
S/2020 S 5	Saturn	—	1.5	18,391,300	933.52	2020	2023	Ashton et al.	Prograde irregular (Inuit)	[134]
S/2020 S 6	Saturn	—	1.5	21,265,300	1,149.11 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[135]
S/2020 S 7	Saturn	—	1.5	17,400,000	844.85 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[136]
S/2020 S 8	Saturn	—	1.5	21,966,700	1,201.72 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[137]
S/2020 S 9	Saturn	—	2	25,434,100	1,565.23 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[138]
S/2020 S 10	Saturn	—	1.5	25,314,800	1,479.87 (r)	2020	2023	Ashton et al.	Retrograde irregular (Norse)	[139]
Ariel	Uranus	I (1)	578.9±0.6	190,900	2.520	1851	1851	Lassell	Main-group moon	[13][14]
Umbriel	Uranus	II (2)	584.7±2.8	266,000	4.144	1851	1851	Lassell	Main-group moon	[13][14]
Titania	Uranus	III (3)	788.9±1.8	436,300	8.706	1787	1787	Herschel	Main-group moon	[13][14]
Oberon	Uranus	IV (4)	761.4±2.6	583,500	13.46	1787	1787	Herschel	Main-group moon	[13][14]
Miranda	Uranus	V (5)	235.8±0.7	129,900	1.413	1948	1949	Kuiper	Main-group moon	[13][14]
Cordelia	Uranus	VI (6)	20.1±3	49,800	0.335	1986	1986	Terrile (Voyager 2)	Inner moon (shepherd)	[13][14]
Ophelia	Uranus	VII (7)	21.4±4	53,800	0.376	1986	1986	Terrile (Voyager 2)	Inner moon (shepherd)	[13][14]
Bianca	Uranus	VIII (8)	25.7±2	59,200	0.435	1986	1986	Smith (Voyager 2)	Inner moon	[13][14]
Cressida	Uranus	IX (9)	39.8±2	61,800	0.464	1986	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Desdemona	Uranus	X (10)	32±4	62,700	0.474	1986	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Juliet	Uranus	XI (11)	46.8±4	64,400	0.493	1986	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Portia	Uranus	XII (12)	67.6±4.0	66,100	0.513	1986	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Rosalind	Uranus	XIII (13)	36±6	69,900	0.558	1986	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Belinda	Uranus	XIV (14)	40.3±8	75,300	0.624	1986	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Puck	Uranus	XV (15)	81±2	86,000	0.762	1985	1986	Synnott (Voyager 2)	Inner moon	[13][14]
Caliban	Uranus	XVI (16)	36.4	7,231,100	579.73 (r)	1997	1997	Gladman, Nicholson, Burns, Kavelaars	Retrograde irregular	[140][14]
Sycorax	Uranus	XVII (17)	93	12,179,400	1,288.38 (r)	1997	1997	Gladman, Nicholson, Burns, Kavelaars	Retrograde irregular	[140][14]
Prospero	Uranus	XVIII (18)	25	16,256,000	1,978.29 (r)	1999	1999	Gladman, Holman, Kavelaars, Petit, Scholl	Retrograde irregular	[13][14]
Setebos	Uranus	XIX (19)	24	17,418,000	2,225.21 (r)	1999	1999	Gladman, Holman, Kavelaars, Petit, Scholl	Retrograde irregular	[13][14]
Stephano	Uranus	XX (20)	16	8,004,000	677.36 (r)	1999	1999	Gladman, Holman, Kavelaars, Petit, Scholl	Retrograde irregular	[13][14]
Trinculo	Uranus	XXI (21)	9.5	8,504,000	749.24 (r)	2001	2002	Holman, Kavelaars, Milisavljevic	Retrograde irregular	[13][14]
Francisco	Uranus	XXII (22)	11	4,276,000	266.56 (r)	2001	2003	Holman, Kavelaars, Milisavljevic, Gladman	Retrograde irregular	[13][14]
Margaret	Uranus	XXIII (23)	10	14,345,000	1,687.01	2003	2003	Sheppard, Jewitt	Prograde irregular	[13][14]
Ferdinand	Uranus	XXIV (24)	10	20,901,000	2,887.21 (r)	2001	2003	Holman, Kavelaars, Milisavljevic, et al.	Retrograde irregular	[13][14]
Perdita	Uranus	XXV (25)	15	76,417	0.638	1986	1999/2003	Karkoschka (Voyager 2)	Inner moon	[14]
Mab	Uranus	XXVI (26)	12	97,736	0.923	2003	2003	Showalter, Lissauer	Inner moon	[14]
Cupid	Uranus	XXVII (27)	9	74,392	0.613	2003	2003	Showalter, Lissauer	Inner moon	[14]
Triton	Neptune	I (1)	1,353.4±0.9	354,800	5.877 (r)	1846	1846	Lassell	Retrograde irregular	[13][14]
Nereid	Neptune	II (2)	170±25	5,513,820	360.14	1949	1949	Kuiper	Prograde irregular	[141][14]
Naiad	Neptune	III (3)	33±3	48,224	0.294	1989	1989	Terrile (Voyager 2)	Inner moon	[13][14]
Thalassa	Neptune	IV (4)	41±3	50,075	0.311	1989	1989	Terrile (Voyager 2)	Inner moon	[13][14]
Despina	Neptune	V (5)	78±4.7	52,526	0.335	1989	1989	Synnott (Voyager 2)	Inner moon	[13][14]
Galatea	Neptune	VI (6)	88±4	61,953	0.429	1989	1989	Synnott (Voyager 2)	Inner moon	[13][14]
Larissa	Neptune	VII (7)	97±3	73,548	0.555	1981/1989	1981/1989	Reitsema, Hubbard, Lebofsky, Tholen (Voyager 2)	Inner moon	[13][14]
Proteus	Neptune	VIII (8)	210±7	117,647	1.122	1989	1989	Synnott (Voyager 2)	Inner moon	[13][14]
Halimede	Neptune	IX (9)	31	15,728,000	1,879.71 (r)	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Retrograde irregular	[13][14]
Psamathe	Neptune	X (10)	20	46,695,000	9,115.91 (r)	2003	2003	Jewitt, Kleyna, Sheppard, Holman, Kavelaars	Retrograde irregular	[13][14]
Sao	Neptune	XI (11)	22	22,422,000	2,914.07	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Prograde irregular	[13][14]
Laomedeia	Neptune	XII (12)	21	23,571,000	3,167.85	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Prograde irregular	[13][14]
Neso	Neptune	XIII (13)	30	48,387,000	9,740.73 (r)	2002	2003	Holman, Kavelaars, Grav, Fraser, Milisavljevic	Retrograde irregular	[13][14]
Hippocamp	Neptune	XIV (14)	17.4	105,283	0.9362	2004/2013	2013	Showalter et al.	Inner moon	[142]
Vanth	Orcus	I (1)	221±5	9,000±9	9.539	2005	2007	Brown & Suer	Synchronous rotation (Binary)	[143]
S/2005 (208996) 1	(208996) 2003 AZ84	—	72±12	7,200±300	≈12	2005	2007	Brown & Suer	unrecovered natural satellite	[144]
Charon	Pluto	I (1)	606±0.5	19,591	6.387	1978	1978	Christy	Synchronous rotation (Binary)	[13][14]
Nix	Pluto	II (2)	22.5	48,671	24.85	2005	2005	Weaver, Stern, Buie, et al.	Chaotic rotation	[13][14]
Hydra	Pluto	III (3)	27.5	64,698	38.20	2005	2005	Weaver, Stern, Buie, et al.	Chaotic rotation	[13][14]
Kerberos	Pluto	IV (4)	7	57,729	32.17	2011	2011	Showalter (Hubble)	Chaotic rotation	[13][14][145][146]
Styx	Pluto	V (5)	5.5	42,393	20.16	2012	2012	Showalter (Hubble)	Chaotic rotation	[13][14][147]
Actaea	Salacia	I (1)	142±5	5,724±27	5.494	2006	2006	Noll et al.	Binary system	[143]
Hiʻiaka	Haumea	I (1)	≈160	49,880	49.12	2005	2005	Brown et al.	assuming a chaotic rotation	[8][148][149]
Namaka	Haumea	II (2)	≈85	25,657	18.2783	2005	2005	Brown et al.	assuming a chaotic rotation	[8][148][149]
Weywot	Quaoar	I (1)	40.5±5.5[150]	14,500±800	12.438	2006	2007	Brown	Binary system	[150][151]
S/2015 (136472) 1	Makemake	—	≈87.5	>21,000	>12.4	2015	2016	Parker et al.		[152][153]
Ilmarë	Varda	I (1)	163±18[154]	4,809±39	5.751	2009	2011	Noll et al.	Binary system	[155]
S/2018 (532037) 1	(532037) 2013 FY27	—	≈95[156]	>9,800 ± 40	≈19	2018	2018	Sheppard	likely a prograde orbit	[157]
Xiangliu	Gonggong	I (1)	<100[158]	24,020±200	25.221	2010	2016	Marton, Kiss & Müller	assuming a prograde orbit	[158]
Dysnomia	Eris	I (1)	350±60[7]	37,273±64	15.786	2005	2005	Brown, Rabinowitz, Trujillo et al.	Synchronous rotation (Binary)	[159]

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Media related to Natural satellites at Wikimedia Commons

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Natural satellites of the Solar System
Planetary satellites of	Earth Mars Jupiter Saturn Uranus Neptune
Dwarf planet satellites of	Orcus Pluto Haumea Quaoar Makemake Gonggong Eris
Minor-planet moons	Near-Earth Florence Didymos Dimorphos Moshup Squannit 1994 CC 2001 SN₂₆₃ Main belt Kalliope Linus Euphrosyne Daphne Peneius Eugenia Petit-Prince Sylvia Romulus Remus Minerva Aegis Gorgoneion Camilla Elektra Kleopatra Alexhelios Cleoselene Ida Dactyl Roxane Olympias Pulcova Balam Jupiter trojans Patroclus Menoetius Hektor Skamandrios Eurybates Queta TNOs Lempo Hiisi Paha 2002 UX₂₅ Sila–Nunam Salacia Actaea Varda Ilmarë Gǃkúnǁʼhòmdímà Gǃòʼé ǃHú 2013 FY₂₇
Ranked by size	Planetary-mass moon Ganymede largest: 5268 km / 0.413 Earths Titan Callisto Io Moon Europa Triton Titania Rhea Oberon Iapetus Charon Umbriel Ariel Dione Tethys Dysnomia Enceladus Miranda Vanth Proteus Mimas Ilmarë Nereid Hiʻiaka Actaea Hyperion Phoebe ...
Discovery timeline Inner moons Irregular moons List Planetary-mass moons Naming Subsatellite Regular moons Trojan moons

List of natural satellites

Moons by primary

List

See also

References