HD 219134 h, also known as HR 8832 h, is an exoplanet orbiting around the K-type star HD 219134 in the constellation of Cassiopeia. It has a minimum mass of 108 Earth masses, which indicates that the planet is likely a gas giant. Unlike HD 219134 b and c it is not observed to transit and thus its radius and density are unknown.
| Discovery | |
|---|---|
| Discovery date | 2015 November 17 |
| radial velocity method | |
| Designations | |
| HD 219134 e, HR 8832 h, HR 8832 e | |
| Orbital characteristics[1][2] | |
| 2.968±0.037 AU | |
| Eccentricity | 0.025+0.027 −0.018 |
| 2100.6±2.9 d[3] | |
| 2456761±20 JD | |
| 0.0°±63.0° | |
| Semi-amplitude | 5.73+0.22 −0.23 m/s |
| Star | HD 219134 |
| Physical characteristics[1][2] | |
| Mass | ≥97.9±4.4 M🜨 |
This planet was initially reported in two 2015 papers; one referred to it as HD 219134 e,[4] while the other found different, and more accurate, parameters for it and so treated it as a different planet, designated HD 219134 h.[5] It is now generally referred to by the HD 219134 h designation.[6][2]