HAT-P-7 b
Description: HAT-P-7b is an extrasolar planet discovered in 2008. It orbits very close to its host star and is larger and more massive than Jupiter. Due to the extreme heat that it receives from its star, the dayside temperature is predicted to be 2,630–2,880 K, while nightside temperatures are 2,211–2,238 K. HAT-P-7b is also one of the darkest planets ever observed, with an albedo of less than 0.03—meaning it absorbs more than 97% of the visible light that strikes it.
Physical Properties
Mass (Jupiter mass): 1.84 MJ
Radius (Jupiter radius): 1.51 RJ
Density: 0.712 g/cm³
Equilibrium Temperature: 2733.0 K
Orbital Parameters
Orbital Period: 2.20474 days
Semi-major Axis: 0.03809 AU
Eccentricity: Unknown
Inclination: 83.11°
Host Star Properties
Host Star: HAT-P-7
Spectral Type: Unknown
Temperature: 6389.0 K
Stellar Mass: 1.56 M☉
Stellar Radius: 2.0 R☉
Discovery Information
Planet Letter: b
Object ID: 3.8
Host ID: 2.17417
Discovery Date: 2008-06
Discovery Year: 2008
Discovery Method: Transit
Discovery Locale: Ground
Discovery Facility: HATNet
Discovery Instrument: 2K CCD Sensor