RA 107.0967° · Dec -11.8524° · star
7 more points to reach Uncommon.
HD 54439 is a common star. It sits in the constellation CMa, shines at apparent magnitude 7.72 and has spectral type B2IIIn.
Its spectrum reads B2IIIn — 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 54439 in the constellation CMa. At apparent magnitude 7.72, it is an easy target for binoculars.
Like any astronomical target, HD 54439 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 54439 scores 15 points on Spacedle's rarity scale, which places it in the common 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 Giant 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.