exoplanet_descriptions/hd_147873_ac.txt Erenar-axon (HD 147873 Ac) - Astro
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Info for exoplanet "Erenar-axon"


Scientific (actual) data
NameHD 147873 Ac
Planet statusConfirmed
Mass sini2.3
Orbital period491.54
Semi major axis1.36
Orbit eccentricity0.23
Discovered2016
Updated2024-08-01
Omega42
K47.9
PublicationPublished in a refereed paper
Detection typeRadial Velocity
Mass measurement typeRadial Velocity
Star nameHD 147873 A
Right ascension246.44°
Declination-33.57°
Mag v7.96
Star distance104.93
Star metallicity-0.03
Star mass1.38
Star radius2.29
Star sp typeF8IV
Star age4
Star temperature5972
Wikipedia articleHD 147873 Ac

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Fictional info (?)
Suggested nameErenar-axon
Planet typeCold planet
It has the longest rotation period (445 days) of any planet in its solar system and rotates in the opposite direction to most other planets.

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 50°K (-223°C) at night to 945°K (672°C) during the day across the equatorial regions.

It is radically different from Earth in other respects.

Wind speeds can reach 50 metres per second.
AtmosphereSulfur dioxide51%
Oxygen35%
Ozone14%
Nitric oxide0.0082%
Atmospheric pressure19 bar
artist's rendition
No known satellites
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