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Info for exoplanet "Rimethi-sida"


Scientific (actual) data
PlanetHD 40307 d
Planet statusConfirmed
Mass sini0.0275
Orbital period20.412
Semi major axis0.134
Orbit eccentricity0.07
Angular distance0.010469
Discovered2008
Updated2019-02-13
Omega17
Tzero vr54532.4
K2.31
PublicationPublished in a refereed paper
Detection typeRadial Velocity
Mass detection typeRadial Velocity
Star nameHD 40307
Right ascension88.52°
Declination-60.02°
Mag v7.17
Mag j5.41
Mag h4.97
Mag k4.79
Star distance12.8
Star metallicity-0.31
Star mass0.77
Star sp typeK2.5V
Star temperature4977
Star detected discIR Excess
Wikipedia articleHD 40307 d

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Fictional info (?)
Suggested nameRimethi-sida
Planet typePlanet
It has the longest rotation period (445 days) of any planet in its solar system and rotates in the opposite direction to most other planets.

The interior of Rimethi-sida is mainly composed of ices and rock. The planet is named after the deity Rimethi-sida, the bringer of chaos.

Rimethi-sida's thick atmosphere render observation of its surface impossible in infrared light, and the first detailed maps did not emerge until the arrival of the Magellan orbiter 56 years ago. Plans have been proposed for rovers or more complex missions, but they are hindered by Rimethi-sida's hazardous precipitation.
AtmosphereOzone66%
Water vapor28%
Ethane3.3%
Sulfur dioxide1.9%
Oxygen0.087%
Nitric oxide0.071%
Carbonyl sulfide0.012%
Atmospheric pressure10 bar
artist's rendition
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Dusla TarsaoMedium-sized potato shaped gaseous asteroid
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