RA 253.8678° · Dec -8.3376° · star
1 more point to reach Uncommon.
GL Gl 644B is a common star. It lies about 18.7 light-years from Earth, sits in the constellation Oph and shines at apparent magnitude 9.9.
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 GL Gl 644B in the constellation Oph. At apparent magnitude 9.9, a small backyard telescope will bring it into view.
Like any astronomical target, GL Gl 644B 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.
GL Gl 644B scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.
That score comes from 3 science badges — Star, Nearby (<25 ly) and Binary 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.