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Space Astro
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Info for exoplanet "Weng"
| Scientific (actual) data |
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| Planet | K2-21 b |
| Planet status | Confirmed |
| Planet mass | 0.00623 |
| Radius | 0.164 |
| Orbital period | 9.00315 |
| Semi major axis | 0.076 |
| Orbit eccentricity | 0.1 |
| Inclination | 88.66 |
| Discovered | 2015 |
| Updated | 2023-05-22 |
| Omega | 34.48 |
| Tconj | 2456990 |
| Tzero tr | 2456990 |
| Publication | Published in a refereed paper |
| Detection type | Primary Transit |
| Mass detection type | TTV |
| Radius detection type | Primary Transit |
| Alternate names | 2MASS J22411288-1429202 b, EPIC 206011691 b, EPIC 206011691.01, WISE J224112.90-142921.1 b |
| Star name | K2-21 |
| Right ascension | 340.3° |
| Declination | -14.49° |
| Mag v | 12.85 |
| Mag j | 10.251 |
| Mag h | 9.633 |
| Mag k | 9.4 |
| Star distance | 83.85 |
| Star metallicity | -0.11 |
| Star mass | 0.68 |
| Star radius | 0.65 |
| Star sp type | M0.0 |
| Star temperature | 4222.06 |
| Star alternate names | 2MASS 22411288-1429202, 2MASS J22411288-1429202, EPIC 206011691, WISE J224112.90-142921.1 |
| Wikipedia article | K2-21 b |
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| Fictional info (?) |
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| Suggested name | Weng |
| Planet type | Warm planet |
| For this reason, scientists often classify Weng and Yinlyan as "warm planets" to distinguish them from the other planets. It is named after the deity Weng, the messenger of chaos.
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 135°K (-138°C) at night to 350°K (77°C) during the day across the equatorial regions.
Weng is the site of Celestium Mons, the most active volcano and second-highest known mountain in its solar system, and of Valles Marineris, one of the largest canyons in its solar system. |
| Atmosphere | Nitrogen | 92% |
| Ethane | 5.8% |
| Krypton | 1.9% |
| Carbon dioxide | 0.25% |
| Atmospheric pressure | 0.016 bar |
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| No known satellites |
| Google search for Weng |
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Website by Joachim Michaelis
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