Astronomy:HD 219134 h
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Short description: Gas giant orbiting HD 219134
| Discovery | |
|---|---|
| Discovery date | 2015 November 17 |
| radial velocity method | |
| Designations | |
| HD 219134 e, HR 8832 h, HR 8832 e | |
| Orbital characteristics[2][3] | |
| 2.968±0.037 astronomical unit|AU | |
| Eccentricity | 0.025+0.027 −0.018 |
| Orbital period | 2100.6±2.9 d[1] |
| astron|astron|helion}} | 2456761±20 JD |
| 0.0°±63.0° | |
| Semi-amplitude | 5.73+0.22 −0.23 m/s |
| Star | HD 219134 |
| Physical characteristics[2][3] | |
| Mass | ≥97.9±4.4 M⊕ |
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.
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][3]
References
- ↑ Van Zandt, Judah et al. (2023), "TESS-Keck Survey. XIV. Two Giant Exoplanets from the Distant Giants Survey", The Astronomical Journal 165 (2): 60, doi:10.3847/1538-3881/aca6ef, Bibcode: 2023AJ....165...60V
- ↑ 2.0 2.1 Rosenthal, Lee J. et al. (2021). "The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades". The Astrophysical Journal Supplement Series 255 (1): 8. doi:10.3847/1538-4365/abe23c. Bibcode: 2021ApJS..255....8R.
- ↑ 3.0 3.1 3.2 "HD 219134". NASA Exoplanet Archive. https://exoplanetarchive.ipac.caltech.edu/overview/HD%20219134.
- ↑ Motalebi, F. (December 2015). "The HARPS-N Rocky Planet Search. I. HD 219134 b: A transiting rocky planet in a multi-planet system at 6.5 pc from the Sun". Astronomy & Astrophysics 584: A72. doi:10.1051/0004-6361/201526822. Bibcode: 2015A&A...584A..72M.
- ↑ Vogt, Steven S. (November 2015). "Six Planets Orbiting HD 219134". The Astrophysical Journal 814 (1): 12. doi:10.1088/0004-637X/814/1/12. Bibcode: 2015ApJ...814...12V.
- ↑ Johnson, Marshall C. (April 2016). "A 12-year Activity Cycle for the Nearby Planet Host Star HD 219134". The Astrophysical Journal 821 (2): 74. doi:10.3847/0004-637X/821/2/74. Bibcode: 2016ApJ...821...74J.
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