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Info for exoplanet "Erxying Zh"


Scientific (actual) data
PlanetHD 23472 b
Planet statusConfirmed
Planet mass0.02618
Radius0.16701
Orbital period17.6671
Semi major axis0.1162
Orbit eccentricity0.072
Inclination88.93
Discovered2018
Updated2022-10-15
Omega114
Tzero tr2458360
Impact parameter0.69
K2.68
Temperature (kelvin)543
PublicationPublished in a refereed paper
Detection typePrimary Transit
Mass detection typeRadial Velocity
Radius detection typePrimary Transit
Alternate namesTOI-174 b
Star nameHD 23472
Right ascension55.46°
Declination-62.77°
Mag v9.7
Star distance39.1
Star mass0.75
Star radius0.73
Star sp typeK3.5V
Star alternate namesTOI-174
Wikipedia articleHD 23472 b

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Fictional info (?)
Suggested nameErxying Zh
Planet typeSmall cold gas planet
It is the coldest planetary atmosphere in its solar system, with a minimum temperature of 70°K (-203°C), and has a complex, layered cloud structure with carbon dioxide thought to make up the lowest clouds, and hydrogen deuteride (HD) the uppermost layer of clouds. The planet is named after the deity Erxying Zh, the spirit of fear.

Having almost no atmosphere to retain heat, it has surface temperatures that vary diurnally more than on any other planet in its solar system, ranging from 175°K (-98°C) at night to 980°K (707°C) during the day across the equatorial regions.

Erxying Zh was one of the first planets to have its motions plotted across the sky - as early as the second millennium BC.

The two polar ice caps appear to be made largely of ice.
AtmosphereHydrogen deuteride (HD)87%
Carbon dioxide13%
Ozone0.0042%
Neon0.00022%
Helium0.00012%
Atmospheric pressure1.6 bar
artist's rendition
No known satellites
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