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Info for exoplanet "Hionnsiar"


Scientific (actual) data
PlanetWASP-147 b
Planet statusConfirmed
Planet mass0.275
Radius1.115
Orbital period4.60273
Semi major axis0.0549
Orbit eccentricity0
Inclination87.9
Discovered2018
Updated2018-07-22
Tzero tr2456560
Impact parameter0.31
K32.7
PublicationPublished in a refereed paper
Detection typePrimary Transit
Mass detection typeRadial Velocity
Radius detection typePrimary Transit
Star nameWASP-147
Right ascension359.19°
Declination-22.15°
Mag v12.31
Star distance426
Star metallicity0.092
Star mass1.044
Star radius1.429
Star sp typeG4
Star age8.47
Star temperature5702
Wikipedia articleWASP-147 b

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Fictional info (?)
Suggested nameHionnsiar
Planet typeHot gas giant
Hionnsiar is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth. Hionnsiar is orbiting WASP-147 every 4.6 Earth days.

This planet is named after the deity Hionnsiar, the god of the sea.

Like Mosthea, Hionnsiar has been orbiting WASP-147 within Agaret Steph's orbit as an inferior planet, and never exceeds 28 degrees away from WASP-147.

Optical ground-based telescopes are typically limited to resolving features about 180 kilometers across when Hionnsiar is closest because of Mosthea's atmosphere.

A prominent result is the "great red spot", a giant storm that is known to have existed for centuries since it was first seen by telescope.

Observations from Earth have shown seasonal change and increased weather activity as Hionnsiar approached its equinox 7 years ago.
AtmosphereCarbon dioxide34%
Hydrogen deuteride (HD)29%
Formaldehyde16%
Hydrogen16%
Helium2.2%
Xenon1.3%
Hydrogen peroxide0.62%
Water vapor0.41%
Nitrogen0.00027%
Atmospheric pressure0.006 bar
artist's rendition
No known satellites
Google search for Hionnsiar


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