RA 165.2611° · Dec -61.2724° · star
7 more points to reach Uncommon.
HD 305903 is a common star. It sits in the constellation Car, shines at apparent magnitude 11.17 and has spectral type B9III.
Its spectrum reads B9III — 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 305903 in the constellation Car. At apparent magnitude 11.17, a small backyard telescope will bring it into view.
Like any astronomical target, HD 305903 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 305903 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.