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

Star : HAT-P-31

THE STAR

- Basic data :			- More data :    - Basic data (from Simbad) - Most recent ref (from ADS)   - Remarks :    Alias GSC 2099-00908 Alias 2MASS J18060904+2625359
	Name HAT-P-31 Distance 354 (−51+74) pc  ref. Apparent Magnitude V 11.66     Mass 1.218 (−0.063+0.089) Msun  ref. Age 3.17 (−1.11+0.7) Gyr  ref. Effective Temperature 6065 (± 100) K  ref. Radius 1.36 (−0.18+0.27) Rsun  ref. Metallicity [Fe/H] 0.15 (± 0.08)    ref. Right Asc. Coord. 18 06 09    Decl. Coord. +26 25 36

2 PLANETS

- Basic data :

Name HAT-P-31 b HAT-P-31 c  (unconfirmed) Discovered in 2011     2011     Mass 2.171 (−0.077+0.106) MJ  ref. > 3.4 MJ  ref. Semi major axis 0.055 (± 0.015) AU  ref. - Orbital period 5.005425 (± 9.2e-05) days  ref. > 1000 days  ref. Eccentricity 0.245 (± 0.0045)    ref. - ω 274.3 (± 1.8) deg.  ref. - Radius 1.07 (−0.32+0.48) RJ  ref. - Ttransit 2454320.8866 (± 0.0053)    ref. - Inclination 87.1 (−2.7+1.8) deg.  ref. - Update 08/06/11     08/06/11

- Molecules detected :
	Name HAT-P-31 b HAT-P-31 c  (unconfirmed) Molecules None None

- HAT-P-31 Remarks :
	08 Jun 2011: Planet HAT-P-31c infered from the quadratic trend in the RV curve of HAT-P-31 (Kipping et al. 2011)

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