HD 219134 e
| 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) | 2.14+0.43 −0.02[1] AU |
| Eccentricity | (e) | 0.27±0.11[1] |
| Orbital period | (P) | 1190+379 −34[1] d |
| Inclination | (i) | null[1]° |
| Physical characteristics | ||
| Mass | (m) | 62±6[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 e, also known as HR 8832 e, is an exoplanet orbiting around the K-type star HR 8832 in the constellation of Cassiopeia. It has a mass of 62 Earth Masses, which indicates that the planet is likely a gas giant. 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 and thus its radius and density are unknown. It is in the ammonia habitable zone, so if it has a large moon with an atmosphere, liquid ammonia could flow on the moon's surface.
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