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Space Astro
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Info for exoplanet "Kishi"
| Scientific (actual) data |
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| Planet | Kepler-257 d |
| Planet status | Confirmed |
| Radius | 0.442 |
| Orbital period | 24.6646 |
| Semi major axis | 0.16 |
| Discovered | 2014 |
| Updated | 2021-02-05 |
| Tconj | 2455020 |
| Impact parameter | 0.13 |
| Publication | Announced on a website |
| Detection type | Primary Transit |
| Alternate names | 2MASS J19491583+4601237 d, K00941.03, KIC 9480189 d, KOI-941 d, KOI-941.03, WISE J194915.82+460123.8 d |
| Star name | Kepler-257 |
| Right ascension | 297.32° |
| Declination | 46.02° |
| Mag j | 13.916 |
| Mag h | 13.448 |
| Mag k | 13.372 |
| Star distance | 797.75 |
| Star metallicity | 0.315 |
| Star radius | 1.04 |
| Star temperature | 5180 |
| Star alternate names | 2MASS J19491583+4601237, KIC 9480189, KOI-941, WISE J194915.82+460123.8 |
| Wikipedia article | Kepler-257 d |
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| Fictional info (?) |
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| Suggested name | Kishi |
| Planet type | Planet |
| Kishi is the fourth planet from Kepler-257 and the second-smallest planet in its solar system.
Kishi's atmosphere is similar to Beja's in its primary composition of molecular hydrogen and carbon dioxide, but it contains more "ices" such as water, ammonia, and methane, along with traces of other hydrocarbons. It is the coldest planetary atmosphere in its solar system, with a minimum temperature of 28°K (-245°C), and has a complex, layered cloud structure with carbon dioxide thought to make up the lowest clouds, and molecular hydrogen the uppermost layer of clouds. The planet is named after the deity Kishi, the creator of war.
Two spacecraft have visited Kishi: Daedalus 6 flew by 23 years ago; and Messenger, launched 8 years ago, orbited Kishi over 145 times in four years before exhausting its reactor and crashing into the planet's surface 9 years later. |
| Atmosphere | Molecular hydrogen | 46% |
| Carbon dioxide | 27% |
| Oxygen | 25% |
| Ammonium hydrosulfide (NH4SH) | 0.44% |
| Hydrogen deuteride (HD) | 0.017% |
| Krypton | 0.012% |
| Atmospheric pressure | 7 bar |
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| No known satellites |
| Google search for Kishi |
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Website by Joachim Michaelis
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