XO-5b
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| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
 | ||
| Parent star | ||
| Star | XO-5 | |
| Constellation | Lynx[1] | |
| Right ascension | (α) | 07h 46m 51.959s[2] |
| Declination | (δ) | +39° 05′ 40.46″[2] |
| Apparent magnitude | (mV) | 12.13 ± 0.03[3] |
| Distance | 848 ± 39[4] ly (260 ± 12[4] pc) | |
| Spectral type | G8V[3] | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.0488 ± 0.0006[4] AU |
| Eccentricity | (e) | 0[note 1] |
| Orbital period | (P) | 4.1877545 ± 0.0000016[5] d |
| Inclination | (i) | 86.7 ± 0.4[4]° |
| Time of transit | (Tt) | 2454552.67168 ± 0.00029[4] JD |
| Semi-amplitude | (K) | 144.9 ± 2.0[4] m/s |
| Physical characteristics | ||
| Mass | (m) | 1.059 ± 0.028[4] MJ |
| Radius | (r) | 1.109 ± 0.050[4] RJ |
| Density | (ρ) | 0.96+0.14 −0.11[4] g cm-3 |
| Surface gravity | (g) | 22 ± 5[3] m/s² |
| Temperature | (T) | 1221 ± 27[4] K |
| Discovery information | ||
| Discovery date | 2008 | |
| Discoverer(s) | XO Project[3] | |
| Discovery method | Transit[3] | |
| Discovery site | XO Telescope at Maui, Hawaii[3] | |
| Discovery status | Published[3] | |
XO-5b is an extrasolar planet approximately 850 light years away in the constellation of Lynx. This planet was found by the transit method using the XO Telescope in May 2008. It was also independently discovered by the HATNet Project. The planet has a mass and radius just slightly larger than that of Jupiter. This planet orbits very close to the G-type parent star, as it is typical for transiting planets, classing this as Hot Jupiter. It takes only 4.188 days (or 100.5 hours) to orbit at an orbital distance of 0.0488 AU).[3][4]
Notes
- ↑ eccentricity is insignificant compared to its uncertainties<ref name="Pál2009"/>
References
- ↑ Roman (1987). "Constellation boundaries". Identification of a Constellation From Position. Retrieved 2012-02-21.
- ↑ 2.0 2.1 Zacharias et al. (2009). "3UC===259-099032". Third U.S. Naval Observatory CCD Astrograph Catalog. Retrieved 2012-02-21.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Burke, Christopher J. et al. (2008). "XO-5b: A Transiting Jupiter-sized Planet with a 4 day Period". The Astrophysical Journal 686 (2): 1331–1340. arXiv:0805.2399. Bibcode:2008ApJ...686.1331B. doi:10.1086/591497.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 Pál, A. et al. (2009). "Independent Confirmation and Refined Parameters of the Hot Jupiter XO-5b". The Astrophysical Journal 700 (1): 783–790. arXiv:0810.0260. Bibcode:2009ApJ...700..783P. doi:10.1088/0004-637X/700/1/783.
- ↑ Sada, Pedro V. et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". accepted in Publications of the Astronomical Society of the Pacific. arXiv:1202.2799. Bibcode:2012arXiv1202.2799S.
External links
Media related to XO-5b at Wikimedia Commons
- "XO-5". Exoplanets. Retrieved 2008-08-06.
Coordinates: 
07h 46m 51.959s, +39° 05′ 40.47″
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