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Info for exoplanet "Perhe-liaq"


Scientific (actual) data
PlanetPi Men c
Planet statusConfirmed
Planet mass0.01142
Radius0.16719
Orbital period6.26785
Semi major axis0.06702
Orbit eccentricity0.15
Inclination87.553
Discovered2018
Updated2022-03-03
Tzero tr2458330
Lambda angle336
Impact parameter0.5738
K1.21
Temperature (kelvin)1147
PublicationPublished in a refereed paper
Detection typePrimary Transit
Mass detection typeRadial Velocity
Radius detection typePrimary Transit
Alternate namesHD 39091 c
Star namePi Men
Right ascension84.29°
Declination-80.47°
Mag v5.67
Star distance18.37
Star metallicity0.08
Star mass1.094
Star radius1.1
Star sp typeG0V
Star age2.98
Star temperature6037
Star alternate namesHD 39091
Wikipedia articlepi Men c

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Fictional info (?)
Suggested namePerhe-liaq
Planet typeHot planet
For this reason, scientists often classify Perhe-liaq and Pamethys Pero as "hot planets" to distinguish them from the other planets. This planet is named after the deity Perhe-liaq, the creator of good fortune.

Perhe-liaq is gravitationally locked with pi Men in a 2:1 spin-orbit resonance, and rotates in a way that is unique in its solar system.

Having almost no atmosphere to retain heat, it has surface temperatures that vary diurnally more than on any other planet in its solar system, ranging from 70°K (-203°C) at night to 420°K (147°C) during the day across the equatorial regions.

The formaldehyde has probably photodissociated, and the free hydrogen peroxide has been swept into interplanetary space by the solar wind because of the lack of a hydrogen chloride layer.

Perhe-liaq's thick clouds render observation of its surface difficult in infrared light, and the first detailed maps did not emerge until the arrival of the Magellan orbiter 58 years ago.

Liquid water cannot exist on the surface of Perhe-liaq due to low atmospheric pressure, which is less than 5 percent of Earth's, except at the lowest elevations for limited periods.
AtmosphereHydrogen peroxide40%
Hydrogen deuteride (HD)30%
Formaldehyde22%
Hydrogen chloride6.8%
Nitrogen0.32%
Carbon monoxide0.14%
Carbon dioxide0.0081%
Atmospheric pressure0.05 bar
artist's rendition
MoonKivite PolyVery small potato shaped rocky moon
MeaeskollHuge almost round crater-filled asteroid
ThehyrVery small slightly egg-shaped crater-filled asteroid
Apus Liaq-bianLarge round gaseous asteroid
Julbest LeneVery small round crater-filled asteroid
MoonpinaMedium-sized round rocky moon
TiiopedeHuge round gaseous planetoid
PaamabMedium-sized irregular crater-filled moon
Lynischal-thoneHuge slightly egg-shaped crater-filled moon
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