RA 55.6498° · Dec 77.1704° · star
1 more point to reach Uncommon.
HD 22220 is a common variable star. It lies about 544.5 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 7.88 and has spectral type A0.
Its spectrum reads A0 — 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 22220 in the constellation Cam. At apparent magnitude 7.88, it is an easy target for binoculars.
Like any astronomical target, HD 22220 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 22220 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 5 science badges — Variable star, Never sets (northern circumpolar), White A-type star, Gently variable 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.