Astronomy:XO-6b
 Jupiter compared to XO-6b | |
| Discovery[1] | |
|---|---|
| Discovery site | Haleakalā Observatory in Maui, Hawaii |
| Discovery date | December 8th, 2016 |
| Tranist | |
| Orbital characteristics[1] | |
| 0.0815±0.0077 astronomical unit|AU | |
| Eccentricity | 0.00 (fixed) |
| Orbital period | 3.7649939±0.0000013 d |
| Inclination | 86.0°±0.2° |
| astron|astron|helion}} | 2,458,843.93943±0.00012 JD |
| Semi-amplitude | <450 m/s |
| Physical characteristics[1] | |
| Mean radius | 2.07±0.22 RJ |
| Mass | 1.9±0.5 Jupiter mass or <4.4 MJ |
| Mean density | 270 ± 110 kg/m3 (460 ± 190 lb/cu yd) or <620 kg/m3 (1,050 lb/cu yd) |
| Physics | 1,577±28 K |
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]
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
- ↑ 1.0 1.1 1.2 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. doi:10.3847/1538-3881/153/3/94. Bibcode: 2017AJ....153...94C.
- ↑ 2.0 2.1 Brown, A. G. A et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics 595: A2. doi:10.1051/0004-6361/201629512. Bibcode: 2016A&A...595A...2G. https://www.aanda.org/articles/aa/full_html/2016/11/aa29512-16/aa29512-16.html.Gaia Data Release 1 catalog entry
- ↑ "The Extrasolar Planet Encyclopaedia — XO-6 B". Extrasolar Planets Encyclopaedia. 1995. https://exoplanet.eu/catalog/xo_6_b--4076/.
- ↑ "The Extrasolar Planet Encyclopaedia — XO-6 b". Extrasolar Planets Encyclopaedia. 1995. https://exoplanet.eu/catalog/xo_6_b--4076/.
- ↑ "Find the constellation which contains given sky coordinates". http://djm.cc/constellation.html.
- ↑ "BD 73 323". http://sim-id/.[yes|permanent dead link|dead link}}]
- ↑ Crouzet, N.; McCullough, P. R.; Long, D.; Rodriguez, P. Montanes; Etangs, A. Lecavelier des; Ribas, I.; Bourrier, V.; Hébrard, G. et al. (2017-02-02). "Discovery of XO-6b: A Hot Jupiter Transiting a Fast Rotating F5 Star on an Oblique Orbit" (in en). The Astronomical Journal 153 (3): 94. doi:10.3847/1538-3881/153/3/94. ISSN 1538-3881. Bibcode: 2017AJ....153...94C.
Further reading
- Garai, Zoltán (January 2020). "Periodic transit timing variations and refined system parameters of the exoplanet XO-6b". Monthly Notices of the Royal Astronomical Society 491 (2): 2760–2769. doi:10.1093/mnras/stz3235. Bibcode: 2020MNRAS.491.2760G.
- Ridden-Harper, Andrew; Turner, Jake D.; Jayawardhana, Ray (December 2020). "TESS Observations of the Hot Jupiter Exoplanet XO-6b: No Evidence of Transit Timing Variations". The Astronomical Journal 160 (6): 249. doi:10.3847/1538-3881/abba1e. Bibcode: 2020AJ....160..249R.
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