RA 139.3000° · Dec 79.2811° · star
10 more points to reach Rare.
HD 78584 is an uncommon star. It lies about 1,953 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 8.17 and has spectral type B3.
Its spectrum reads B3 — 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 78584 in the constellation Cam. At apparent magnitude 8.17, it is an easy target for binoculars.
Like any astronomical target, HD 78584 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 78584 scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), Never sets (northern circumpolar), Hot blue B-type star and Blue-white 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.