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Ymir (Kepler-1084 Ab), Exoplanets
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Info for exoplanet "Ymir"


Scientific (actual) data
NameKepler-1084 Ab
Planet statusConfirmed
Radius0.099
Orbital period2.05334
Discovered2016
Updated2025-03-01
Tconj2454970
PublicationAnnounced on a website
Detection typePrimary Transit
Alternate names2MASS J19202447+4815040 b, K02075.01, KIC 10857519 b, KOI-2075 b, KOI-2075.01, WISE J192024.47+481504.1 b
Star nameKepler-1084 A
Ra290.1°
Dec48.25°
Mag j11.178
Mag h10.904
Mag k10.836
Star distance427
Star metallicity-0.02
Star mass1.12
Star radius1.28
Star sp typeF8IV-V
Star age4.07
Star temperature6113
Star alternate names2MASS J19202447+4815040, KIC 10857519, KOI-2075, WISE J192024.47+481504.1
Wikipedia articleKepler-1084 Ab

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Fictional info (?)
Ymir
Cold planet
It may have had methane oceans in the past, but these would have vaporized as the temperature rose due to a runaway greenhouse effect.

It was the one of the first exoplanets visited by a spacecraft, and one of the first to be successfully landed on.
AtmosphereHelium58%
Molecular hydrogen30%
Methane9.3%
Oxygen1.7%
0.0012 bar
0 × Earth
artist's rendition
MoonOnemar AdLarge irregular gaseous asteroid
Mirja-theusMedium-sized irregular rocky asteroid
Tislis Sipoly ThysSmall round crater-filled comet
Deskale DesVery small irregular ice moon
MedemedeiaLarge almost round ice comet
Google search for Ymir


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