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
Distance21.25 ly
(6.52 pc)
Spectral type K3 V
Temperature (T) 4710 K
Observed separation
Orbital elements
Semi-major axis(a) 0.0382 ± 0.0003[1] AU
Eccentricity (e) 0.064 ± 0.001[1]
Orbital period(P) 6.765 ± 0.0054[1] d
Inclination (i) 85.058 ± 0.08[1]°
Physical characteristics
Mass(m)2.67 ± 0.59[1] 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.

References

  1. 1 2 3 4 5 "HD 219134 c CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2015-10-08.
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