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Space Astro
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Info for exoplanet "Utema"
| Scientific (actual) data |
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| Planet | NGTS-21 b |
| Planet status | Confirmed |
| Planet mass | 2.36 |
| Radius | 1.33 |
| Orbital period | 1.54339 |
| Semi major axis | 0.0236 |
| Orbit eccentricity | 0 |
| Inclination | 83.85 |
| Discovered | 2022 |
| Updated | 2022-10-04 |
| Tzero tr | 2458230 |
| Impact parameter | 0.63 |
| K | 506 |
| Temperature (kelvin) | 1357 |
| Publication | Published in a refereed paper |
| Detection type | Primary Transit |
| Mass detection type | Radial Velocity |
| Radius detection type | Primary Transit |
| Star name | NGTS-21 |
| Right ascension | 311.26° |
| Declination | -35.43° |
| Mag v | 15.6 |
| Star distance | 641 |
| Star metallicity | -0.26 |
| Star mass | 0.72 |
| Star radius | 0.86 |
| Star age | 10 |
| Star temperature | 4660 |
| Wikipedia article | NGTS-21 b |
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| Fictional info (?) |
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| Suggested name | Utema |
| Planet type | Large hot gas giant |
| This large hot gas giant is named after the deity Utema, the messenger of fear.
Two spacecraft have visited Utema: Wayfinder 8 flew by 45 years ago; and Messenger, launched 23 years ago, orbited Utema over 125 times in four years before exhausting its pwoer source and crashing into the planet's surface 12 years later.
Utema is a large hot gas giant and is sometimes called Neda Ho's "sister planet" because of their similar size, mass, proximity to NGTS-21, and bulk composition.
Plans have been proposed for rovers or more complex missions, but they are hindered by Utema's strong magnetosphere.
A prominent result is the "great orange spot", a giant storm that is known to have existed for centuries since it was first detected by scanner. |
| Atmosphere | Carbonyl sulfide | 61% |
| Ammonium hydrosulfide (NH4SH) | 20% |
| Ethane | 19% |
| 2H2O | 0.088% |
| Hydrogen chloride | 0.037% |
| Atmospheric pressure | 0.15 bar |
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| Moon | Zubya Sa | Huge almost round rocky moon |
| Google search for Utema |
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Website by Joachim Michaelis
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