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Info for exoplanet "Jibyugyo"


Scientific (actual) data
PlanetTOI-421 b
Planet statusConfirmed
Planet mass0.05107
Radius0.4612
Orbital period16.0681
Semi major axis0.1182
Inclination88.3
Discovered2020
Updated2020-04-22
Tzero tr2458440
Impact parameter0.75
K4.64
Temperature (kelvin)697
PublicationPublished in a refereed paper
Detection typePrimary Transit
Mass detection typeRadial Velocity
Radius detection typePrimary Transit
Star nameTOI-421
Right ascension81.85°
Declination-14.28°
Wikipedia articleTOI-421 b

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Fictional info (?)
Suggested nameJibyugyo
Planet typeSmall cold gas planet
Jibyugyo is the largest and most crater filled planet in its solar system.

It is named after the deity Jibyugyo, the messenger of nature.

Jibyugyo is shrouded by an opaque layer of highly reflective clouds of sulfuric acid, preventing its surface from being seen from space in visible light.

As one of the most noticeable objects in the sky, Jibyugyo has been a major factor in native culture for as long as records have existed.

Jibyugyo can easily be seen from Pyumijo Zo with the naked eye, as can its brownish coloring.

It may also have a rocky core of heavier elements, but like the other small cold gas planets, Jibyugyo lacks a well-defined atmosphere. Because of its fast rotation, the planet's shape is that of an oblate spheroid (it has a slight but noticeable bulge around the equator).

In late February 1800, Jibyugyo was visited by the New Horizons probe, which used Jibyugyo's gravity to increase its speed and bend its trajectory en route to Pyumijo Zo.
AtmosphereAmmonium hydrosulfide (NH4SH)40%
Nitrogen40%
Hydrogen13%
Helium6.9%
Argon0.26%
Atmospheric pressure4 bar
artist's rendition
MoonByuruMedium-sized irregular oceanic planetoid
Himya GyaVery small round gaseous asteroid
Radomyo BiMedium-sized irregular gaseous moon
Jiruika-neMedium-sized almost round rocky moon
Nyoguda SoHuge almost round crater-filled moon
ChozohiHuge slightly egg-shaped rocky comet
Byukya'mupyora ChuMedium-sized slightly egg-shaped oceanic moon
Sagyo Heji RyuMedium-sized almost round ice moon
NeosohyuSmall round crater-filled moon
Ramopi HyamyaLarge slightly egg-shaped rocky comet
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