K2-3d

K2-3d

Exoplanet		List of exoplanets Size comparison Earth K2-3d
Parent star
Star		K2-3
Right ascension	(α)	11h29m20.39s
Declination	(δ)	-01d27m17.2s
Distance		137±6.5 ly (42±2 pc)
Mass	(m)	0.612±0.086 M☉
Radius	(r)	0.553±0.041 R☉
Temperature	(T)	null K
Metallicity	[Fe/H]	null
Age		null Gyr
Physical characteristics
Mass	(m)	11.1±3.5 M⊕
Radius	(r)	1.53±0.11 R⊕
Density	(ρ)	17.5±6.3 g cm−3
Orbital elements
Semi-major axis	(a)	0.2086±0.0100 AU
Eccentricity	(e)	0.045±0.045
Orbital period	(P)	44.5705±0.0059 d
Inclination	(i)	89.79±0.15°
Discovery information
Discovery date		2015
Discoverer(s)		Owen Deffner
Discovery method		Transit
Discovery site		Kepler Space Observatory
Discovery status		Confirmed

K2-3d also known as EPIC 201367065 d is a massive solid exoplanet orbiting K2-3 a Red dwarf, every 44.5 days 137 ly away.

Composition

K2-3d has a density of 17.5±6.3g/cm3, far greater that of Iron. Although its density is greater than Iron estimates show that K2-3d would need to have a mass of 14.1 M_e to be made purely of Iron, this indicates that the planet probably has some silica "rock" or some water resembling that of a terrestrial planet.

Mass depending on Composition

(assuming 1.53 R_e)

Type	Mass (Me)
Iron	14.1
Rocky (Earth Like)	3.7
Water	1.5
K2-3d	11.1