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Info for exoplanet "Frantus-greip"


Scientific (actual) data
PlanetHD 191939 d
Planet statusConfirmed
Planet mass0.0182
Radius0.2712
Orbital period38.3525
Semi major axis0.207
Orbit eccentricity0
Inclination89.43
Discovered2020
Updated2023-06-02
Tzero tr2458740
Impact parameter0.438
K0.6
Temperature (kelvin)549
PublicationPublished in a refereed paper
Detection typePrimary Transit
Mass detection typeRadial Velocity
Radius detection typePrimary Transit
Alternate namesTOI-1339 d
Star nameHD 191939
Right ascension302.03°
Declination66.85°
Mag v9
Star distance53.608
Star metallicity-0.16
Star mass0.81
Star radius0.945
Star sp typeG8V
Star age7
Star temperature5427
Wikipedia articleHD 191939 d

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Fictional info (?)
Suggested nameFrantus-greip
Planet typeCold planet
The planet is named after the deity Frantus-greip, the goddess of the sea.

Frantus-greip is gravitationally locked with HD 191939 in a 5:4 spin-orbit resonance, and rotates in a way that is unique in its solar system. As seen from HD 191939, in a frame of reference that rotates with the orbital motion, it appears to rotate only once every two years.
AtmosphereArgon47%
Methane45%
Hydrogen peroxide6%
Water vapor0.56%
Ammonia0.11%
Hydrogen0.0052%
Atmospheric pressure7 bar
artist's rendition
MoonGreiphaMedium-sized round rocky comet
Tanymir NomiaLarge round rocky moon
PauqopheLarge round rocky comet
Rica'thiLarge potato shaped gaseous moon
Onede'daSmall slightly egg-shaped rocky comet
Lenehy-caHuge slightly egg-shaped oceanic comet
Lilyke NoeturLarge potato shaped rocky asteroid
Pehimun-siMedium-sized potato shaped rocky moon
Google search for Frantus-greip


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