HD 219134 c

HD 219134 c

Exoplanet		List of exoplanets
Parent star
Star		HR 8832
Constellation		Cassiopeia
Right ascension	(α)	23h 13m 16.97632s
Declination	(δ)	+57° 10′ 06.0823″
Apparent magnitude	(mV)	5.574
Distance		21.25 ly (6.52 pc)
Spectral type		K3 V
Temperature	(T)	4710 K
Observed separation
Orbital elements
Semi-major axis	(a)	0.0382 ± 0.0003 AU
Eccentricity	(e)	0.064 ± 0.001
Orbital period	(P)	6.765 ± 0.0054 d
Inclination	(i)	85.058 ± 0.08°
Physical characteristics
Mass	(m)	2.67 ± 0.59 M⊕
Discovery information
Discovery date		2015 July 30
Discoverer(s)
Discovery method		radial velocity method (HARPS-N);
Discovery site		HARPS-N of the Telescopio Nazionale Galileo
Discovery status		Published

HD 219134 c also known as HR 8832 c is an exoplanet orbiting around the K-type star HR 8832 in the constellation of Cassiopeia. It has a low mass of 2.67 Earth Masses which indicates that the exoplanet is likely a rocky planet. Due to its short orbital period just under 7 days it is too hot to have liquid water on its surface. The exoplanet was initially detected by the instrument HARPS-N of the Italian Telescopio Nazionale Galileo via the radial velocity method. Unlike HD 219134 b it has not been observed by the Spitzer telescope.

Star HR 8832 (circled) lies just off the "W" shape of the constellation Cassiopeia.