HD 85628 Ab

HD 85628 Ab, also designed MASCARA-4b, is an exoplanet located approximately 559.47±3.05 light years from Earth. This planet was discovered in 2019 using the transit method.[1][2]

HD 85628 Ab
Discovery
Discovered byMASCARA
Discovery date2019
transit
Orbital characteristics
0.047
Eccentricity0
2.8 d
Inclination88.81
StarHD 85628 A
Physical characteristics
Mean radius
1.53 RJ
Mass3.1 MJ

    Characteristics

    It is a hot Jupiter on a retrograde and slightly eccentric orbit.[3] The planet is unusually reflective for a hot Jupiter.[4] Hydrogen, sodium, magnesium, calcium and iron emission from planetary atmosphere was detected.[5]

    Host star
    Main article: HD 85628

    The host star, HD 85628 A, is the primary star of a binary star system, HD 85628. The secondary star is HD 85628 B, an M-type star.

    See also

    References
    1. "The Extrasolar Planet Encyclopaedia — HD 85628 A b". exoplanet.eu. Retrieved 19 August 2023.
    2. "NASA Exoplanet Archive". Archived from the original on 2021-04-22. Retrieved 13 June 2021.
    3. MASCARA-4 b/bRing-1 b - A retrograde hot Jupiter around the bright A3V star HD 85628, 2019, arXiv:1904.02733
    4. Gravity-Darkening Analysis of Misaligned Hot Jupiter MASCARA-4 b, 2019, arXiv:1911.05025
    5. Transmission spectroscopy of the ultra-hot Jupiter MASCARA-4 b Disentangling the hydrostatic and exospheric regimes of ultra-hot Jupiters, 2022, arXiv:2208.11427
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