Groombridge 1618 is also known as Gl 380 and HD 88230. Nearby orange dwarf system in Ursa Major. It is an unusually bright flare star, but flares less frequently than other such stars. Its level of activity suggests it is relatively young, perhaps a little older than a Billion years. First identified in A Catalog of Circumpolar Stars by Stephen Groombridge, published posthumously in 1838. An unconfirmed planet was published in 1989 with 4 Jupiter masses at about half Earth's distance, in the inner part of the star's habitability zone. It's signal could be due to stellar activity. Its closest neighbor is a red dwarf UX UMa, which would flicker in and out of visibility due to the effects of its flares.