XO-6b

XO-6b is a transiting exoplanet, a hot Jupiter, orbiting the star XO-6 around 760 Light Years (230 Parsecs) away from Earth. It was discovered in 2016 by the XO planet search team.[2][3]

XO-6
Jupiter compared to XO-6b
Discovery[1]
Discovery siteHaleakalā Observatory in Maui, HawaiiHawaii
Discovery dateDecember 8th, 2016
Tranist
Orbital characteristics[1]
0.0815±0.0077 AU
Eccentricity0.00 (fixed)
3.7649939±0.0000013 d
Inclination86.0°±0.2°
2,458,843.93943±0.00012 JD
Semi-amplitude<450 m/s
Physical characteristics[1]
Mean radius
2.07±0.22 RJ
Mass1.9±0.5 MJ or <4.4 MJ
Mean density
270 ± 110 kg/m3 (460 ± 190 lb/cu yd) or <620 kg/m3 (1,050 lb/cu yd)
Temperature1,577±28 K

    Physical properties

    XO-6b is one of the puffiest planets ever discovered, with a maximum mass of 4.4 times of Jupiter. It is up to twice as wide, making it one of the largest exoplanets ever found (see list of largest exoplanets). Later estimates, however, make it around two times the mass of Jupiter.[2][4]

    XO-6b has a tight orbit, which means a year on it is only about 4 days. XO-6 is slightly more than one tenth as far from its host star as Mercury is to the sun.

    XO-6

    XO-6b orbits XO-6, a faint 10th magnitude star in the constellation Camelopardalis.[5] Due to its magnitude, this star is too faint to be seen with the naked eye, but can be seen with a telescope.[6] XO-6 is a F-type main-sequence star with about 1.5 times the mass of the Sun. It is also radiating 4 times as bright, and is almost twice the size of the Sun. It is also hotter, with a temperature of 6720 kelvins, which gives it the typical hue of an F-type star.[7] Unlike most other stars of its kind, XO-6 rotates rapidly at a rate of 43 km/s.

    References
    1. Crouzet, N.; et al. (2017). "Discovery of XO-6b: A Hot Jupiter Transiting a Fast Rotating F5 Star on an Oblique Orbit". The Astronomical Journal. 153 (3). 94. arXiv:1612.02776. Bibcode:2017AJ....153...94C. doi:10.3847/1538-3881/153/3/94. S2CID 119082666.
    2. Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. S2CID 1828208.Gaia Data Release 1 catalog entry
    3. "The Extrasolar Planet Encyclopaedia — XO-6 B".
    4. "The Extrasolar Planet Encyclopaedia — XO-6 b". exoplanet.eu. Retrieved 2021-02-18.
    5. "Find the constellation which contains given sky coordinates". djm.cc. Retrieved 2021-02-14.
    6. "BD 73 323". sim-id. Retrieved 2021-02-14. {{cite web}}: Check |url= value (help)
    7. Crouzet, N.; McCullough, P. R.; Long, D.; Rodriguez, P. Montanes; Etangs, A. Lecavelier des; Ribas, I.; Bourrier, V.; Hébrard, G.; Vilardell, F.; Deleuil, M.; Herrero, E. (2017-02-02). "Discovery of XO-6b: A Hot Jupiter Transiting a Fast Rotating F5 Star on an Oblique Orbit". The Astronomical Journal. 153 (3): 94. arXiv:1612.02776. Bibcode:2017AJ....153...94C. doi:10.3847/1538-3881/153/3/94. hdl:2117/112256. ISSN 1538-3881. S2CID 119082666.

    Further reading
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