Photo: ESO Online Digitized Sky Survey.
Groombridge 34 is a nearby binary star system consisting of two red dwarfs in a nearly circular orbit with a separation of about 147 AU and an orbital period of 2,600 years. Both components are flare stars and have been given variable star names: the brighter member (Groombridge 34 A) is designated GX Andromedae and the other member is designated GQ And.
Groombridge 34 lies 11.6 light-years away in the constellation Andromeda. It was first listed by Stephen Groombridge (1755-1834) in "A Catalog of Circumpolar Stars" (commonly referred to as the Groombridge Catalogue), published posthumously in 1838.
|visual magnitude||8.08 (A), 11.06 (B)|
|absolute magnitude||10.32 (A), 13.30 (B)|
|spectral type||M1.5V (A), M3.5V (B)|
|distance||11.62 light-years (3.56 pc)|
|radial velocity||+12.0 km/s|
|position||R.A. 00h 18m 22.9/25.2s,
Dec. +44° 01' 22/26"
|other designations||GX/GQ Andromedae, HD 1326,
GCTP 49, BD +43°44, LHS 3/4,
GJ 15 A/B, Gl 171-047/171-048,
SAO 36248, HIP 1475