RA 51.5186° · Dec 49.7456° · star
14 more points to reach Epic.
HD 21085 is a rare star. It lies about 2,452.3 light-years from Earth, sits in the constellation Per, shines at apparent magnitude 7.12 and has spectral type A3II.
Its spectrum reads A3II — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for HD 21085 in the constellation Per. At apparent magnitude 7.12, it is an easy target for binoculars.
Like any astronomical target, HD 21085 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 21085 scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), White A-type star, Bright giant and Intrinsically luminous (Mv < −2) — 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.