HD 219134 h

Last updated
HD 219134 h
Discovery
Discovery date2015 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🜨

    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] [2]

    References

    1. 1 2 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. arXiv: 2105.11583 . Bibcode:2021ApJS..255....8R. doi: 10.3847/1538-4365/abe23c . S2CID   235186973.
    2. 1 2 3 "HD 219134". NASA Exoplanet Archive . Retrieved 11 December 2022.
    3. ↑ Van Zandt, Judah; et al. (2023), "TESS-Keck Survey. XIV. Two Giant Exoplanets from the Distant Giants Survey", The Astronomical Journal, 165 (2): 60, arXiv: 2209.06958 , Bibcode:2023AJ....165...60V, doi: 10.3847/1538-3881/aca6ef , S2CID   252280288
    4. ↑ Motalebi, F.; et al. (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. arXiv: 1507.08532 . Bibcode:2015A&A...584A..72M. doi:10.1051/0004-6361/201526822. S2CID   45652878.
    5. ↑ Vogt, Steven S.; et al. (November 2015). "Six Planets Orbiting HD 219134". The Astrophysical Journal . 814 (1): 12. arXiv: 1509.07912 . Bibcode:2015ApJ...814...12V. doi:10.1088/0004-637X/814/1/12. S2CID   45438051.
    6. ↑ Johnson, Marshall C.; et al. (April 2016). "A 12-year Activity Cycle for the Nearby Planet Host Star HD 219134". The Astrophysical Journal . 821 (2): 74. arXiv: 1602.05200 . Bibcode:2016ApJ...821...74J. doi: 10.3847/0004-637X/821/2/74 . S2CID   118651905.
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