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Info for exoplanet "Papraxpal-me"


Scientific (actual) data
PlanetHIP 57274 b
Planet statusConfirmed
Mass sini0.036
Orbital period8.1352
Semi major axis0.07
Orbit eccentricity0.187
Angular distance0.002701
Discovered2011
Updated2013-05-20
Omega81
Tperi2454800
PublicationSubmitted to a professional journal
Detection typeRadial Velocity
Star nameHIP 57274
Right ascension176.17°
Declination30.96°
Mag v8.96
Star distance25.92
Star metallicity0.09
Star mass0.73
Star radius0.68
Star sp typeK5V
Star age7.87
Star temperature4640
Wikipedia articleHIP 57274 b

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Fictional info (?)
Suggested namePapraxpal-me
Planet typeWarm 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.
AtmosphereEthane33%
Carbon dioxide31%
Ammonium hydrosulfide (NH4SH)30%
Carbon monoxide2.8%
Xenon1.9%
Sulfur dioxide0%
Atmospheric pressure0.015 bar
artist's rendition
No known satellites
Google search for Papraxpal-me


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