RA 50.8005° · Dec 33.0784° · star
4 more points to reach Uncommon.
HD 20891 is a common variable star. It lies about 387.4 light-years from Earth, sits in the constellation Per, shines at apparent magnitude 7.96 and has spectral type G0.
Its spectrum reads G0 — a G-type star: the very same spectral class as our own Sun.
Look for HD 20891 in the constellation Per. At apparent magnitude 7.96, it is an easy target for binoculars.
Like any astronomical target, HD 20891 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.
HD 20891 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Variable star, Sun-like G-type star, Barely variable (under 0.05 mag) 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.