From the Extrasolar Planets Encyclopaedia : http://exoplanet.eu

Star : XO-2

THE STAR

- Basic data :			- More data :    - Basic data (from Simbad) - Most recent ref (from ADS)   - Remarks :    Alias: GSC 03413-00005
	Name XO-2 Distance 149 (± 4) pc  ref. Spectral Type K0V     Apparent Magnitude V 11.18     Mass 0.98 (± 0.02) Msun  ref. Age 2 Gyr  ref. Effective Temperature 5340 (± 32) K  ref. Radius 0.964 (± 0.02) Rsun  ref. Metallicity [Fe/H] 0.45 (± 0.02)    ref. Right Asc. Coord. 07 48 07    Decl. Coord. +50 13 33

PLANET

- Basic data :
	Name XO-2 b Discovered in 2007     Mass 0.57 (± 0.06) MJ  ref. Semi major axis 0.0369 (± 0.002) AU  ref. Orbital period 2.615838 (± 8e-06) days  ref. Eccentricity 0    ref. Radius 0.973 (± 0.03) RJ  ref. Ttransit 2454147.74902 (± 0.0002)    ref. Inclination > 88.58 deg.  ref. Update 17/03/09

- Molecules detected :
	Name XO-2 b Molecules None

- XO-2 Remarks :
	17 Mar. 09:Fernandez et al 2009 find a period which "differs by 2.5 from previously published period. More data are needed to tell whether the period is actually variable (as it would be in the presence of an additional body) or if the timing errors have been underestimated."

- XO-2 Other web pages :
	Transit Light Curve by AXA

31 related publications :  (sort by author)  (sort by date)