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Info for exoplanet "Thee Hy"


Scientific (actual) data
PlanetHD 219134 d
Planet statusConfirmed
Planet mass0.05236
Mass sini0.067
Orbital period46.71
Semi major axis0.225
Orbit eccentricity0
Discovered2015
Updated2019-09-24
Tperi2449960
K4.4
PublicationPublished in a refereed paper
Detection typeRadial Velocity
Mass detection typeSpectrum
Star nameHD 219134
Right ascension348.32°
Declination57.17°
Mag v5.57
Star distance6.55
Star metallicity0.11
Star mass0.794
Star radius0.778
Star sp typeK3V
Star temperature4699
Wikipedia articleHD 219134 d

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Fictional info (?)
Suggested nameThee Hy
Planet typeSmall cold gas planet
Orbiting within Pamedeia's orbit, Thee Hy is an inferior planet and never appears to venture far from HD 219134; its maximum angular distance from HD 219134 (elongation) is 31 degrees.

This small cold gas planet is named after the deity Thee Hy, the bringer of fear.

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 110°K (-163°C) at night to 1120°K (847°C) during the day across the equatorial regions.

Optical ground-based telescopes are typically limited to resolving features about 405 kilometers across when Thee Hy is closest because of Earth's atmosphere.
AtmosphereMolecular hydrogen47%
Sulfur dioxide33%
Ammonia16%
Ozone3.7%
Neon0.43%
Oxygen0.32%
Formaldehyde0.041%
Atmospheric pressure10 bar
artist's rendition
No known satellites
Google search for Thee hy


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