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Gliese 22, also catalogued V547 Cassiopeiae, is a hierarchical star system approximately 33 light-years away in the constellation of Cassiopeia. The system consists of two red dwarf stars, Gliese 22A and Gliese 22B in an outer orbit of about 320 years, and a brown dwarf, Gliese 22C, which orbits Gliese 22A in about 16 years. As of 2008, it was announced that a possible extrasolar planet, Gliese 22B b, or brown dwarf orbits Gliese 22B but this is currently unconfirmed.
(in order from star)
|b (unconfirmed)||16 MJ||—||5,500||0||—||—|
- "Descoberta de novo planeta gigante extrasolar". Universia. 2008-03-16. Retrieved 2008-08-10. (Spanish)
- "Notes for star Gliese 22 B". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-10.
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