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Space Astro
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Info for exoplanet "Mentsu"
| Scientific (actual) data |
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| Name | JW 734 b |
| Planet status | Confirmed |
| Planet mass | 4.8 |
| Semi major axis | 353 |
| Angular distance | 0.77 |
| Discovered | 2020 |
| Updated | 2025-08-30 |
| Publication | Published in a refereed paper |
| Detection type | Imaging |
| Mass measurement type | Spectrum |
| Star name | JW 734 |
| Ra | 83.85° |
| Dec | -5.48° |
| Mag v | 19.78 |
| Mag i | 15.46 |
| Mag j | 13.8 |
| Mag h | 13.2 |
| Mag k | 12.8 |
| Star distance | 457.4 |
| Star mass | 0.1 |
| Star radius | 1.18 |
| Star sp type | M7 |
| Star age | 0.001 |
| Star temperature | 2857 |
| Wikipedia article | JW 734 b |
Back
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| Fictional info (?) |
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| Mentsu |
| Large cold gas giant |
| It may have had formaldehyde oceans in the past, but these would have vaporized as the temperature rose due to a runaway greenhouse effect.
Wind speeds can reach 81 metres per second. |
| Atmosphere | Krypton | 31% |
| Nitric oxide | 25% |
| Formaldehyde | 24% |
| Ethane | 16% |
| Neon | 4.3% |
| Nitrogen | 0.094% |
| Carbon monoxide | 0.049% |
| Xenon | 0.0078% |
| Oxygen | 0% |
| 0.6 bar |
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| No known satellites |
| Google search for Mentsu |
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Website by Joachim Michaelis
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