Magnitude 8.19 | Constellation Cassiopeia | |
Similar Chi Cassiopeiae, Lambda Cassiopeiae, Omicron Cassiopeiae, Psi Cassiopeiae, Tau Cassiopeiae | ||
HD 240237 is a red giant approximately 4,900 light-years away in the constellation Cassiopeia. The star has an exoplanet orbiting around it every 745 days.
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Nomenclature and history
The designation b, derives from the order of discovery. The designation of b is given to the first planet orbiting a given star, followed by the other lowercase letters of the alphabet. In the case of HD 240237, there was only one planet, so only the letter b is used.
Planetary system
The star is known to host one planet, with a mass around 5 times that of Jupiter, roughly every 2 years with mild eccentricity.
References
HD 240237 Wikipedia(Text) CC BY-SA