exoplanet_descriptions/hh_211_b.txt Onetanca (HH 211 B) - Exoplanets
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Info for exoplanet "Onetanca"


Scientific (actual) data
NameHH 211 B
Planet statusConfirmed
Planet mass30
Radius10
Semi major axis4.6
Discovered2009
Updated2025-09-24
PublicationPublished in a refereed paper
Detection typeOther
Mass measurement typeSpectrum
Right ascension83.23°
Declination82.78°
Star distance24.6
Wikipedia articleHH 211 B

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Fictional info (?)
Suggested nameOnetanca
Planet typeHuge cold gas giant
The volume of water ice in the south polar ice cap, if melted, would be sufficient to cover the entire planetary surface to a depth of 19 meters.
AtmosphereAmmonia51%
Neon31%
Helium14%
Nitrogen3.2%
Ammonium hydrosulfide (NH4SH)0.059%
Hydrogen chloride0.011%
Atmospheric pressure0.14 bar
artist's rendition
No known satellites
Google search for Onetanca


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