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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 mass of 108 Earth Masses, which indicates that the planet is likely a gas giant. Unlike HD 219134 b it was not 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.[citation needed]

HD 219134 h
Discovery
Discovery date2015 November 17
Detection method
radial velocity method
Designations
Alternative names
HD 219134 e, HR 8832 h
Orbital characteristics
Semi-major axis
3.11 (± 0.04)[1] AU
Eccentricity0.06 (± 0.04)[1]
Orbital period (sidereal)
2100.6±2.9[2] d
Argument of periastron
180.0° (± 19.0)[1]
StarHD 219134
Physical characteristics
Mass108.12[1] MEarth

    References


    1. "Planet HD 219134 h". Exoplanet.eu. Retrieved 2021-03-30.
    2. TESS-Keck Survey XIV: 2 giant exoplanets from the Distant Giants Survey, 2022, arXiv:2209.06958

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