HD 219134 f
HD 219134 f, also known as HR 8832 f, is an exoplanet orbiting around the K-type star HD 219134 in the constellation of Cassiopeia. It is a Super-Earth with a minimum mass of over 7 times that of Earth. Unlike HD 219134 b and HD 219134 c it was not observed by the Spitzer Space Telescope and thus its radius and density are unknown. Only a minimum radius can be given.
| Discovery | |
|---|---|
| Discovery date | 2015 November 17 |
Detection method | radial velocity method |
| Orbital characteristics | |
| Apastron | 0.1679 (± 0.00908) AU |
| Periastron | 0.1246 (± 0.00908) AU |
Semi-major axis | 0.1463 (± 0.0018) 0.14574 (± 2e-05) AU |
| Eccentricity | 0.148 (± 0.047) |
Orbital period (sidereal) | 22.805 (± 0.005) d |
| Inclination | ? |
| Star | HD 219134 |
| Physical characteristics | |
Mean radius | >1.31 (± 0.02) R🜨 |
| Mass | >7.30 (± 0.40) ME |
Mean density | <17.9 g cm−3 |
Surface gravity | <4.25 g |
| Temperature | 522.6 K (249.5 °C; 481.0 °F) |
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