RA 80.6468° · Dec 37.6760° · star
11 more points to reach Rare.
HD 34921 is an uncommon variable star. It sits in the constellation Aur, shines at apparent magnitude 7.4 and has spectral type B0IVpe.
Its spectrum reads B0IVpe — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.
Look for HD 34921 in the constellation Aur. At apparent magnitude 7.4, it is an easy target for binoculars.
Like any astronomical target, HD 34921 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 34921 scores 23 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 11 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Hot blue B-type star, Subgiant (leaving the main sequence), 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.