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Info for exoplanet "Greip Sponda"


Scientific (actual) data
PlanetHATS-77 b
Planet statusConfirmed
Planet mass1.374
Radius1.165
Orbital period3.08763
Semi major axis0.03607
Orbit eccentricity0.045
Inclination88.44
Discovered2021
Updated2021-12-06
Tzero tr2459140
Impact parameter0.328
K253
Temperature (kelvin)828
PublicationPublished in a refereed paper
Detection typePrimary Transit
Mass detection typeRadial Velocity
Radius detection typePrimary Transit
Alternate namesTOI-730 b
Star nameHATS-77
Right ascension149.83°
Declination-27.39°
Mag v16.35
Star distance414
Star metallicity0.253
Star mass0.655
Star radius0.643
Star age12.1
Star temperature4071
Star alternate namesTOI-730
Wikipedia articleHATS-77 b

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Fictional info (?)
Suggested nameGreip Sponda
Planet typeHot gas giant
The planet is named after the deity Greip Sponda, the goddess of dreams.

It may have had ozone oceans in the past, but these would have vaporized as the temperature rose due to a runaway greenhouse effect.

Plans have been proposed for rovers or more complex missions, but they are hindered by Greip Sponda's strong magnetosphere.
AtmosphereMolecular hydrogen72%
Ammonia11%
Ozone8.4%
Hydrogen deuteride (HD)7.6%
Atmospheric pressure5 bar
artist's rendition
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Deucessut TearoLarge slightly egg-shaped rocky comet
ObenaVery small irregular ice moon
BannomiaSmall round crater-filled moon
Demone-paditaSmall irregular rocky asteroid
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