RA 63.8428° · Dec -7.6575° · star
7 more points to reach Epic.
GL Gl 166B is a rare star. It lies about 16.5 light-years from Earth, sits in the constellation Eri, shines at apparent magnitude 9.52 and has spectral type DA4.
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 166B in the constellation Eri. At apparent magnitude 9.52, a small backyard telescope will bring it into view.
Like any astronomical target, GL Gl 166B 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 166B scores 43 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Nearby (<25 ly), Binary star and White dwarf (a burnt-out core) — 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.