RA 3.4425° · Dec 54.4646° · star
4 more points to reach Uncommon.
HD 232138 is a common star. It sits in the constellation Cas, shines at apparent magnitude 8.73 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 232138 in the constellation Cas. At apparent magnitude 8.73, it is an easy target for binoculars.
Like any astronomical target, HD 232138 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 232138 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, 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.