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Info for exoplanet "Mategyo'gi"


Scientific (actual) data
PlanetHD 90156 b
Planet statusConfirmed
Mass sini0.057
Orbital period49.77
Semi major axis0.25
Orbit eccentricity0.31
Angular distance0.006313
Discovered2009
Updated2010-10-05
Omega113
PublicationSubmitted to a professional journal
Detection typeRadial Velocity
Star nameHD 90156
Right ascension155.98°
Declination-29.65°
Mag v6.95
Star distance39.6
Star metallicity-0.24
Star mass0.84
Star sp typeG5V
Star age4.4
Star temperature5599
Wikipedia articleHD 90156 b

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Fictional info (?)
Suggested nameMategyo'gi
Planet typeCold planet
Mategyo'gi is similar in composition to Watese, and both have different bulk chemical composition from that of the larger cold planets. The planet is named after the deity Mategyo'gi, the demon of destruction.

It may have had hydrogen chloride oceans in the past, but these would have vaporized as the temperature rose due to a runaway greenhouse effect. The hydrogen chloride has probably photodissociated, and the free ammonium hydrosulfide (NH4SH) has been swept into interplanetary space by the solar wind because of the lack of a ammonia layer.
AtmosphereAmmonium hydrosulfide (NH4SH)88%
2H2O4.2%
Hydrogen chloride3.4%
Ammonia2.9%
Nitric oxide0.61%
Atmospheric pressure90 bar
artist's rendition
No known satellites
Google search for Mategyo'gi


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