Astronomy:XO-6b
 Jupiter compared to XO-6b | |
| Discovery[1] | |
|---|---|
| Discovery site | Haleakalā Observatory in Maui, Hawaii |
| Discovery date | December 8th, 2016 |
| Transit | |
| Orbital characteristics[3] | |
| 0.082±0.008 astronomical unit|AU[2] | |
| Eccentricity | 0.00 (fixed)[1] |
| Orbital period | 3.7649923+45 −46 d |
| Inclination | 84.77°+0.82° −0.66° |
| astron|astron|helion}} | 2,458,843.93943±0.00012 JD[1] |
| Semi-amplitude | <450 m/s[1] |
| Physical characteristics | |
| Mean radius | 1.52±0.17 RJ[4] |
| Mass | 1.73±0.20 MJ[3] |
| Physics | 1,670±25 K[3] |
XO-6b is a transiting exoplanet, 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.[5][6]
Characteristics
XO-6b is classified as a hot Jupiter.[1] The planet has an orbital period of just 3.8 days and an average orbital separation of 0.082 astronomical units.[1][2][3] As of such, it is highly irradiated, with a surface temperature estimated to be around 1,670 K (1,400 °C).[3] The planet's mass is estimated at 1.73±0.20 MJ.[3] The discovery paper suggested a very large radius of 2.07±0.22 RJ,[1] which would make it among the largest known exoplanets, but more recent papers, considering the measurements of the host star's distance by the Gaia satellite, found the radius to be smaller, at around 1.5 RJ.[2][4]
Host star
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Camelopardalis[7] |
| Right ascension | 06h 19m 10.3709s[8] |
| Declination | +73° 49′ 39.587″[8] |
| Apparent magnitude (V) | 10.247±0.004[9] |
| Characteristics | |
| Evolutionary stage | Main sequence[8] |
| Spectral type | F5[1] |
| Variable type | Planetary transit variable[1] |
| Astrometry | |
| Radial velocity (Rv) | 2.5±0.9[8] km/s |
| Proper motion (μ) | RA: −16.628[8] mas/yr Dec.: −22.275[8] mas/yr |
| Parallax (π) | 4.3131 ± 0.0232[8] mas |
| Distance | 756 ± 4 ly (232 ± 1 pc) |
| Details | |
| Mass | 1.297±0.040[4] M☉ |
| Radius | 1.417±0.029[4] R☉ |
| Luminosity | 3.36[8] L☉ |
| Surface gravity (log g) | 4.291±0.091[9] cgs |
| Temperature | 6,724±164[9] K |
| Age | 1.89±0.46[4] Gyr |
| Other designations | |
BD+73°323 | |
| Database references | |
| SIMBAD | data |
XO-6b orbits XO-6, a faint 10th magnitude star in the constellation Camelopardalis.[7] Due to its magnitude, this star is too faint to be seen with the naked eye, but can be seen with a telescope. XO-6 is a F-type main-sequence star[1][8] with about 1.30 times the mass of the Sun. It is also radiating three times as bright,[8] and is 1.4 times the size of the Sun.[4] It is also hotter, with a temperature of 6724 K,[9] which gives it the typical hue of an F-type star.[10] Unlike most other stars of its kind, XO-6 rotates rapidly at a rate of 43 km/s.[citation needed]
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 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 2.2 Johns, Daniel; Marti, Connor; Huff, Madison; McCann, Jacob; Wittenmyer, Robert A.; Horner, Jonathan; Wright, Duncan J. (November 2018). "Revised Exoplanet Radii and Habitability Using Gaia Data Release 2" (in en). The Astrophysical Journal Supplement Series 239 (1): 14. doi:10.3847/1538-4365/aae5fb. ISSN 0067-0049. Bibcode: 2018ApJS..239...14J.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Saha, Suman (2024-09-01). "Precise Transit Photometry Using TESS. II. Revisiting 28 Additional Transiting Systems with Updated Physical Properties". The Astrophysical Journal Supplement Series 274 (1): 13. doi:10.3847/1538-4365/ad6a60. ISSN 0067-0049. Bibcode: 2024ApJS..274...13S.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 Collaboration, Gaia; Creevey, O. L.; Sarro, L. M.; Lobel, A.; Pancino, E.; Andrae, R.; Smart, R. L.; Clementini, G. et al. (June 2023). "Gaia Data Release 3. A golden sample of astrophysical parameters" (in en). Astronomy and Astrophysics 674: A39. doi:10.1051/0004-6361/202243800. ISSN 0004-6361. Bibcode: 2023A&A...674A..39G.
- ↑ 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. 2016. https://exoplanet.eu/catalog/xo_6_b--4076/. Retrieved 2021-02-18.
- ↑ 7.0 7.1 Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R Constellation record for this object at VizieR.
- ↑ 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 9.0 9.1 9.2 9.3 Simpson, Emilie R.; Fetherolf, Tara; Kane, Stephen R.; Pepper, Joshua; Močnik, Teo; Dalba, Paul A. (August 2023). "Variability of Known Exoplanet Host Stars Observed by TESS" (in en). The Astronomical Journal 166 (2): 72. doi:10.3847/1538-3881/acda26. ISSN 0004-6256. Bibcode: 2023AJ....166...72S.
- ↑ "The Colour of Stars". Australia Telescope, Outreach and Education. Commonwealth Scientific and Industrial Research Organisation. December 21, 2004. http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html. Retrieved 2012-01-16.
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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