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Info for exoplanet "Sipeliaq"


Scientific (actual) data
PlanetK2-121 b
Planet statusConfirmed
Radius0.669
Orbital period5.18576
Semi major axis0.0525
Orbit eccentricity0.22
Inclination87.25
Discovered2017
Updated2021-02-05
Omega72.97
Tconj2457140
Tzero tr2457140
Impact parameter0.21
Temperature (kelvin)723
PublicationPublished in a refereed paper
Detection typePrimary Transit
Radius detection typePrimary Transit
Alternate namesEPIC 211818569 b, 2MASS J08274481+1734457 b, EPIC 211818569.01, WISE J082744.80+173445.6 b
Star nameK2-121
Right ascension126.94°
Declination17.58°
Mag j11.309
Mag h10.742
Star distance170.37
Star metallicity-0.04
Star mass0.72
Star radius0.68
Star sp typeK5V
Star temperature4551
Star alternate namesEPIC 211818569, 2MASS J08274481+1734457, WISE J082744.80+173445.6
Wikipedia articleK2-121 b

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Fictional info (?)
Suggested nameSipeliaq
Planet typeHot planet
This planet is named after the deity Sipeliaq, the messenger of the sky.

Its orbital eccentricity is the largest of all known planets in its solar system; at perihelion, Sipeliaq's distance from K2-121 is only about two-thirds (or 99 pct) of its distance at aphelion.

The smooth Borealis basin in the northern hemisphere covers 27 percent of the planet and may be a giant impact feature.

It may also have a rocky core of heavier elements, but like the other hot planets, Sipeliaq lacks a well-defined magnetic field.
AtmosphereHelium77%
Sulfur dioxide17%
Argon3.7%
Molecular hydrogen1.1%
Carbonyl sulfide0.4%
Ozone0.0069%
Krypton0%
Atmospheric pressure70 bar
artist's rendition
MoonHermaka BeenSmall potato shaped rocky asteroid
Nandone-tungrVery small round crater-filled asteroid
Tisskoll CaliVery small potato shaped oceanic planetoid
Nokin MideliaSmall round rocky asteroid
Herthone-julHuge slightly egg-shaped oceanic moon
Tesaxa StegaretVery small irregular rocky moon
Aita'idiVery small slightly egg-shaped gaseous asteroid
Cliber'tayharSmall irregular gaseous asteroid
KaobefranHuge irregular rocky comet
TurmedeLarge almost round ice planetoid
Lirrti-noeHuge potato shaped gaseous moon
NesonaqLarge round ice moon
Google search for Sipeliaq


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