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Space Astro
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Info for exoplanet "Achisha"
| Scientific (actual) data |
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| Name | HD 18143 Ab |
| Planet status | Confirmed |
| Mass sini | 0.034 |
| Orbital period | 10.3 |
| Semi major axis | 0.088 |
| Orbit eccentricity | 0.224 |
| Discovered | 2022 |
| Updated | 2024-07-28 |
| Omega | 60.123 |
| K | 3.614 |
| Publication | Published in a refereed paper |
| Detection type | Radial Velocity |
| Mass measurement type | Radial Velocity |
| Star name | HD 18143 A |
| Right ascension | 43.91° |
| Declination | 26.87° |
| Mag v | 7.68 |
| Mag j | 5.95 |
| Mag h | 5.548 |
| Mag k | 5.427 |
| Star distance | 22.5243 |
| Star mass | 0.85 |
| Star radius | 0.894 |
| Star sp type | K0V |
| Star temperature | 5078 |
| Star alternate names | GJ 9105 A, LDS 883 A, STF 326 A |
| Wikipedia article | HD 18143 Ab |
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| Fictional info (?) |
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| Suggested name | Achisha |
| Planet type | Warm planet |
| It has the longest rotation period (445 days) of any planet in its solar system and rotates in the opposite direction to most other planets.
It is the coldest planetary atmosphere in its solar system, with a minimum temperature of 68°K (-205°C), and has a complex, layered cloud structure with hydrogen peroxide thought to make up the lowest clouds, and ammonium hydrosulfide (NH4SH) the uppermost layer of clouds.
The two polar ice caps appear to be made largely of ice. |
| Atmosphere | Ammonium hydrosulfide (NH4SH) | 42% |
| Hydrogen peroxide | 24% |
| Hydrogen | 18% |
| Nitrogen | 9.8% |
| Molecular hydrogen | 3.3% |
| 2H2O | 2.2% |
| Ammonia | 0.095% |
| Carbon dioxide | 0.0025% |
| Atmospheric pressure | 6 bar |
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| No known satellites |
| Google search for Achisha |
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Website by Joachim Michaelis
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