RA 33.7213° · Dec 54.5317° · star
16 more points to reach Epic.
HD 13661 is a rare variable star. It lies about 1,802 light-years from Earth, sits in the constellation Per, shines at apparent magnitude 7.85 and has spectral type B2IV-Ve.
Its spectrum reads B2IV-Ve — 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 13661 in the constellation Per. At apparent magnitude 7.85, it is an easy target for binoculars.
Like any astronomical target, HD 13661 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 13661 scores 34 points on Spacedle's rarity scale, which places it in the rare tier. Another 16 points would lift it into a rarer tier.
That score comes from 7 science badges — Variable star, Distant (over 1,000 light-years), Hot blue B-type star, Subgiant (leaving the main sequence), Blue-white 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.