RA 61.9554° · Dec 62.3329° · star
14 more points to reach Epic.
HD 25639 is a rare variable star. It lies about 2,203.8 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 7.08 and has spectral type B0V.
Its spectrum reads B0V — 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 25639 in the constellation Cam. At apparent magnitude 7.08, it is an easy target for binoculars.
Like any astronomical target, HD 25639 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 25639 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 7 science badges — Variable star, Distant (over 1,000 light-years), Never sets (northern circumpolar), Hot blue B-type star, Main-sequence star, Intrinsically luminous (Mv < −2) 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.