Kepler-42 d
Description: Kepler-42, formerly known as KOI-961, is a red dwarf located in the constellation Cygnus and approximately 131 light years from the Sun. It has three known extrasolar planets, all of which are smaller than Earth in radius and orbit very close to the star.
Physical Properties
Mass (Jupiter mass): Unknown
Radius (Jupiter radius): 0.051 RJ
Density: 3.86 g/cm³
Equilibrium Temperature: 450.0 K
Orbital Parameters
Orbital Period: 1.865169 days
Semi-major Axis: 0.0154 AU
Eccentricity: 0.02
Inclination: 88.02°
Host Star Properties
Host Star: Kepler-42
Spectral Type: M
Temperature: 3068.0 K
Stellar Mass: 0.13 M☉
Stellar Radius: 0.17 R☉
Discovery Information
Planet Letter: d
Object ID: 3.1804
Host ID: 2.53529
Discovery Date: 2012-03
Discovery Year: 2011
Discovery Method: Transit
Discovery Locale: Space
Discovery Facility: Kepler
Discovery Instrument: Kepler CCD Array