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
Photo: ESO Online Digitized Sky Survey
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.
||8.09 (A), 11.06 (B)
||10.33 (A), 13.30 (B)
||M1.5V (A), M3.5V (B)
||11.62 light-years (3.56 pc)
||R.A. 00h 18m 22.9/25.2s,
Dec. +44° 01' 22/26"
||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