K2-3 d
Description: K2-3d, also known as EPIC 201367065 d, is a confirmed exoplanet of probable mini-Neptune type orbiting the red dwarf star K2-3, and the outermost of three such planets discovered in the system. It is located 143 light-years away from Earth in the constellation of Leo. The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. It was the first planet in the Kepler "Second Light" mission to receive the letter "d" designation for a planet. Its discovery was announced in January 2015.
Physical Properties
Mass (Jupiter mass): 0.00692197409528595 MJ
Radius (Jupiter radius): 0.13 RJ
Density: 17.5 g/cm³
Equilibrium Temperature: 305.2 K
Orbital Parameters
Orbital Period: 44.55603 days
Semi-major Axis: 0.2014 AU
Eccentricity: 0.091
Inclination: 89.82°
Host Star Properties
Host Star: K2-3
Spectral Type: M V
Temperature: 3951.0 K
Stellar Mass: 0.53 M☉
Stellar Radius: 0.55 R☉
Discovery Information
Planet Letter: d
Object ID: 3.11743
Host ID: 2.69968
Discovery Date: 2015-05
Discovery Year: 2015
Discovery Method: Transit
Discovery Locale: Space
Discovery Facility: K2
Discovery Instrument: Kepler CCD Array