Magnitude 8.19 | ||
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.
Contents
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