Object Type:	Water Cloud Jovian
Parent Star:	HD 188015 (G5 IV)
Discovery Status:	Confirmed
Habitability:	Planet at Earthlike Temperatures at Mean Orbital Distance
Current Planet Habitability Zone
Mass ( M sin i ):	1.26 Jupiters
Periastron Distance:	1.01 AU
Mean Distance:	1.19 AU
Apastron Distance:	1.36 AU
Orbital Period:	456.46 Days
Eccentricity:	0.15 ± 0.09
Argument of Perihelion (omega):	293 °
Radial Velocity of Star:	32 m/s
Planet Appearance:	White water ice clouds
Estimated Radius:	1.005 Jupiters 1
Estimated Periastron Temp:	271 Kelvin
Estimated Mean Temp:	250 Kelvin
Estimated Apastron Temp:	233 Kelvin
Temp from Internal Heating :	111.297 Kelvins 2
Max Angular Star Size:	0.637°
Mean Angular Star Size:	0.54°
Min Angular Star Size:	0.473°
Gravitational Influence (Hill Sphere):	0.085 AU / 12790000 km
Max Stable Prograde Moon Orbit:	0.03 AU / 4600000 km
Max Moon Mass:	> 10 Earths 3,4
Tidally locked if older than:	> 20 Gyr 5
Estimated Bond Albedo:	~ 0.79 6
Notes:      1 from planet formation models of Burrows et al      2 from planet formation models of Burrows et al      3 assuming age of 5 Gyr      4 based on periastron due to high eccentricity      5 orbit may be too eccentric for 1:1 tidal lock      6 from Sudarsky et al. 2000
Year Discovered:	2005
Detection Method:	Doppler Spectroscopy
Discovered By:	Marcy et al

Click image below to enlarge