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Space Astro
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Info for exoplanet "Papraxpal-me"
Scientific (actual) data |
Planet | HIP 57274 b |
Planet status | Confirmed |
Mass sini | 0.036 |
Orbital period | 8.1352 |
Semi major axis | 0.07 |
Orbit eccentricity | 0.187 |
Angular distance | 0.002701 |
Discovered | 2011 |
Updated | 2013-05-20 |
Omega | 81 |
Tperi | 2454800 |
Publication | Submitted to a professional journal |
Detection type | Radial Velocity |
Star name | HIP 57274 |
Right ascension | 176.17° |
Declination | 30.96° |
Mag v | 8.96 |
Star distance | 25.92 |
Star metallicity | 0.09 |
Star mass | 0.73 |
Star radius | 0.68 |
Star sp type | K5V |
Star age | 7.87 |
Star temperature | 4640 |
Wikipedia article | HIP 57274 b |
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Fictional info (?) |
Suggested name | Papraxpal-me |
Planet type | Warm planet |
It is the second-brightest natural object in the night sky after Umbauti, reaching an apparent magnitude of -5 - bright enough to cast shadows at night and, rarely, visible to the naked eye in broad daylight.
Papraxpal-me's atmosphere is similar to Umbauti's in its primary composition of ethane and carbon dioxide, but it contains more "ices" such as water, ammonia, and methane, along with traces of other hydrocarbons. It is named after the deity Papraxpal-me, the demon of love and beauty.
Like Umbauti, Papraxpal-me has been orbiting HIP 57274 within Kindeuces-dys's orbit as an inferior planet, and never moves more than 26 degrees away from HIP 57274.
Two spacecraft have visited Papraxpal-me: Daedalus 9 flew by 30 years ago; and Messenger, launched 14 years ago, orbited Papraxpal-me over 95 times in four years before exhausting its reactor and crashing into the planet's atmosphere 4 years later.
It is radically different from Earth in other respects. The ammonium hydrosulfide (NH4SH) has probably photodissociated, and the free ethane has been swept into interplanetary space by the solar wind because of the lack of a carbon monoxide layer.
Optical ground-based telescopes are typically limited to resolving features about 330 kilometers across when Papraxpal-me is closest because of Earth's atmosphere. |
Atmosphere | Ethane | 33% |
Carbon dioxide | 31% |
Ammonium hydrosulfide (NH4SH) | 30% |
Carbon monoxide | 2.8% |
Xenon | 1.9% |
Sulfur dioxide | 0% |
Atmospheric pressure | 0.015 bar |
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No known satellites |
Google search for Papraxpal-me |
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Website by Joachim Michaelis
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