RA 178.2423° · Dec 37.7187° · star
10 more points to reach Epic.
Groombridge 1830 is a rare variable star. It lies about 29.7 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 6.42 and has spectral type G8Vp.
It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.
Look for Groombridge 1830 in the constellation UMa. At apparent magnitude 6.42, it is an easy target for binoculars.
Like any astronomical target, Groombridge 1830 is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.
Groombridge 1830 scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.
That score comes from 8 science badges — Variable star, Binary star, Has a proper name, Never sets (northern circumpolar), Sun-like G-type star, Main-sequence star, Gently variable and A named variable star — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.