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Space Astro
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Info for exoplanet "Menw"
| Scientific (actual) data |
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| Name | HD 158259 b |
| Planet status | Confirmed |
| Mass sini | 0.00698 |
| Radius | 0.107 |
| Orbital period | 2.178 |
| Discovered | 2020 |
| Updated | 2025-02-12 |
| K | 1.05103 |
| Publication | Published in a refereed paper |
| Detection type | Radial Velocity |
| Mass measurement type | Spectrum |
| Radius measurement type | Primary Transit |
| Star name | HD 158259 |
| Right ascension | 261.35° |
| Declination | 52.79° |
| Mag v | 6.46 |
| Star distance | 27.08 |
| Star mass | 1.08 |
| Star radius | 1.21 |
| Star sp type | G0 |
| Wikipedia article | HD 158259 b |
Back
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| Fictional info (?) |
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| Suggested name | Menw |
| Planet type | Cold planet |
| It is the coldest planetary atmosphere in its solar system, with a minimum temperature of 43°K (-230°C), and has a complex, layered cloud structure with ethane thought to make up the lowest clouds, and oxygen the uppermost layer of clouds. The planet telescopically displays the complete range of phases, similar to Venus and the Moon, as it moves in its inner orbit relative to HD 158259, which reoccurs over the so-called synodic period approximately every 81 days.
It is radically different from Earth in other respects. It has the densest atmosphere of the two cold planets, consisting of huge amounts of oxygen.
The volume of water detected has been estimated to be equivalent to the volume of water in Lake Superior. |
| Atmosphere | Oxygen | 60% |
| Ethane | 36% |
| Neon | 1.9% |
| Nitric oxide | 1% |
| Sulfur dioxide | 0.36% |
| Hydrogen chloride | 0.1% |
| Atmospheric pressure | 13 bar |
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| No known satellites |
| Google search for Menw |
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Website by Joachim Michaelis
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