exoplanet_descriptions/hat-p-27_ac.txt Oukyun (HAT-P-27 Ac) - Exoplanets
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Info for exoplanet "Oukyun"


Scientific (actual) data
NameHAT-P-27 Ac
Planet statusConfirmed
Radius0.3863
Orbital period1.1994
Semi major axis0.0217
Discovered2024
Updated2025-02-11
Tzero tr2705.51
Temperature (kelvin)1426
PublicationPublished in a refereed paper
Detection typePrimary Transit
Alternate namesWASP-40 c, WASP-40 Ac
Star nameHAT-P-27 A
Right ascension222.77°
Declination5.95°
Mag v12.21
Star distance204
Star metallicity0.29
Star mass0.945
Star radius0.898
Star sp typeG8V
Star age4.4
Star temperature5300
Star alternate namesWASP-40, WASP-40 A, TOI-5672, GSC 0333-00351, 2MASS J14510418+0556505
Wikipedia articleHAT-P-27 Ac

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Fictional info (?)
Suggested nameOukyun
Planet typeHot planet
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 80°K (-193°C) at night to 560°K (287°C) during the day across the equatorial regions.
AtmosphereXenon52%
Helium16%
Neon12%
Carbon monoxide10%
Hydrogen peroxide5.8%
Ammonia2.9%
Atmospheric pressure0.019 bar
artist's rendition
MoonZhyedao ZhwoSmall slightly egg-shaped gaseous planetoid
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Wohanf-oucSmall round ice moon
YongnyoqHuge round gaseous asteroid
OunyingMedium-sized almost round rocky moon
WofwenVery small irregular oceanic asteroid
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Ryur-yatwei-pLarge irregular crater-filled asteroid
Zyangch YojwenHuge round crater-filled moon
Asyam-wenglMedium-sized round oceanic moon
Sangy'yingrHuge slightly egg-shaped oceanic comet
CyongrwengdSmall slightly egg-shaped oceanic planetoid
Google search for Oukyun


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