RA 245.9855° · Dec -52.2979° · star
7 more points to reach Rare.
HD 147331 is an uncommon star. It sits in the constellation Nor, shines at apparent magnitude 8.74 and has spectral type B0Ia.
Its spectrum reads B0Ia — 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 147331 in the constellation Nor. At apparent magnitude 8.74, it is an easy target for binoculars.
Like any astronomical target, HD 147331 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 147331 scores 27 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 7 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, Hot blue B-type star and Supergiant — 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.