RA 52.2270° · Dec -0.4175° · star
1 more point to reach Common.
HD 21581 is a trash star. It lies about 809.3 light-years from Earth, sits in the constellation Tau, shines at apparent magnitude 8.7 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 21581 in the constellation Tau. At apparent magnitude 8.7, it is an easy target for binoculars.
Like any astronomical target, HD 21581 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 21581 scores 14 points on Spacedle's rarity scale, which places it in the trash tier. Another 1 point would lift it into a rarer tier.
That score comes from 3 science badges — Star, On the zodiac and Sun-like G-type 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.