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Space Astro
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Info for exoplanet "Hyachi"
| Scientific (actual) data |
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| Name | GJ 143 b |
| Planet status | Confirmed |
| Planet mass | 0.0815 |
| Radius | 0.2506 |
| Orbital period | 35.6134 |
| Semi major axis | 0.1904 |
| Orbit eccentricity | 0.122 |
| Inclination | 89.38 |
| Discovered | 2018 |
| Updated | 2026-07-06 |
| Omega | 146 |
| Tzero tr | 2458390 |
| Impact parameter | 0.584 |
| K | 6.24 |
| Temp calculated | 436 |
| Publication | Published in a refereed paper |
| Detection type | Primary Transit |
| Mass measurement type | Radial Velocity |
| Radius measurement type | Primary Transit |
| Alternate names | HD 21749 b, TOI-186 b |
| Star name | GJ 143 |
| Ra | 51.75° |
| Dec | -63.5° |
| Mag v | 8.3 |
| Star distance | 16.33 |
| Star metallicity | 0.003 |
| Star mass | 0.76 |
| Star radius | 0.73 |
| Star sp type | K4.5V |
| Star age | 3.8 |
| Star temperature | 4640 |
| Star alternate names | HD 21749, TOI-186 |
| Wikipedia article | GJ 143 b |
Back
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| Fictional info (?) |
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| Hyachi |
| Small cold gas 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 may have had carbon dioxide oceans in the past, but these would have vaporized as the temperature rose due to a runaway greenhouse effect.
It was the one of the first exoplanets visited by a spacecraft, and one of the first to be successfully landed on.
One of this planet's sinister moons is crowded with strange and ultra advanced oceanic creatures known to spend their life by devouring the Jusha Hyomyo Most of them are closely similar to the Nyakya but with fur and vary in length from 70 to 160 cm. The Pyase-jabyo can endure temperatures from 10 to 60°C and even stormy weather which is common near the poles. |
| 150000000 |
| Atmosphere | Methane | 64% |
| Water | 34% |
| Carbon dioxide | 0.94% |
| Oxygen | 2.0E-6% |
| 0.006 bar |
| 3 × Earth |
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| Moon | Pyomogyu-pyo | Huge almost round ice moon |
| Nyabi | Large slightly egg-shaped crater-filled moon |
| Uryacha | Huge slightly egg-shaped rocky moon |
| Juoshi'pikerya | Large slightly egg-shaped rocky asteroid |
| Chuurya Pyori | Huge slightly egg-shaped oceanic moon |
| Kyohanyo-pyugo | Large slightly egg-shaped ice moon |
| Jochi-mi | Medium-sized almost round rocky comet |
| Gogasha | Huge almost round gaseous moon |
| Byokyu Pe | Large slightly egg-shaped rocky asteroid |
| Nopa Dano'kubya | Large round rocky comet |
| Pahibyo'rya | Large slightly egg-shaped rocky moon |
| Wagumihe'muchogu | Large almost round rocky planetoid |
| Google search for Hyachi |
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Website by Joachim Michaelis
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