XO-5b

XO-5b
Exoplanet List of exoplanets

Size comparison of Jupiter (left) with XO-5b (right).
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]
Distance848 ± 39[4] ly
(260 ± 12[4] pc)
Spectral type G8V[3]
Orbital elements
Semi-major 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]
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

  1. ↑ eccentricity is insignificant compared to its uncertainties[4]

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
  2. 1 2 Zacharias; et al. (2009). "3UC===259-099032". Third U.S. Naval Observatory CCD Astrograph Catalog. Retrieved 2012-02-21.
  3. 1 2 3 4 5 6 7 8 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. Bibcode:2008ApJ...686.1331B. arXiv:0805.2399 Freely accessible. doi:10.1086/591497.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 Pál, A.; et al. (2009). "Independent Confirmation and Refined Parameters of the Hot Jupiter XO-5b". The Astrophysical Journal. 700 (1): 783–790. Bibcode:2009ApJ...700..783P. arXiv:0810.0260 Freely accessible. doi:10.1088/0004-637X/700/1/783.
  5. ↑ Sada, Pedro V.; et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. Bibcode:2012PASP..124..212S. arXiv:1202.2799 Freely accessible. doi:10.1086/665043.

Media related to XO-5b at Wikimedia Commons

Coordinates: 07h 46m 51.959s, +39° 05′ 40.47″


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