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Space Astro
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Info for exoplanet "Thone"
| Scientific (actual) data |
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| Planet | 81 Cet b |
| Planet status | Confirmed |
| Mass sini | 5.3 |
| Orbital period | 952.7 |
| Semi major axis | 2.5 |
| Orbit eccentricity | 0.206 |
| Angular distance | 0.02572 |
| Discovered | 2008 |
| Updated | 2014-08-27 |
| Omega | 175 |
| Tperi | 2452490 |
| Publication | Published in a refereed paper |
| Detection type | Radial Velocity |
| Star name | 81 Cet |
| Right ascension | 39.43° |
| Declination | -3.4° |
| Mag v | 5.65 |
| Mag j | 3.94 |
| Mag h | 3.38 |
| Mag k | 3.27 |
| Star distance | 97.2 |
| Star metallicity | -0.06 |
| Star mass | 2.4 |
| Star radius | 11 |
| Star sp type | G5III |
| Wikipedia article | 81 Cet b |
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| Fictional info (?) |
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| Suggested name | Thone |
| Planet type | Cold planet |
| It is named after the deity Thone, the creator of the sky.
The polar regions are constantly below 279°K (6°C).
The volume of water detected has been estimated to be equivalent to the volume of water in the Black Sea.
Surrounding Thone is a irregular planetary ring system and a powerful magnetosphere.
Its north and south poles, therefore, lie where most other planets have their equators. |
| Atmosphere | Xenon | 74% |
| Ammonium hydrosulfide (NH4SH) | 19% |
| Molecular hydrogen | 3.5% |
| Ozone | 1.7% |
| Krypton | 1.3% |
| Nitric oxide | 0.016% |
| Helium | 0.00058% |
| Nitrogen | 1.7E-5% |
| Atmospheric pressure | 13 bar |
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| No known satellites |
| Google search for Thone |
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Website by Joachim Michaelis
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