RA 193.4223° · Dec -61.2159° · star
8 more points to reach Rare.
HD 312137 is an uncommon variable star. It lies about 791.6 light-years from Earth, sits in the constellation Cru, shines at apparent magnitude 10.02 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 312137 in the constellation Cru. At apparent magnitude 10.02, a small backyard telescope will bring it into view.
Like any astronomical target, HD 312137 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 312137 scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Under the Southern Cross, Hot blue B-type 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.