RA 106.4067° · Dec -11.1573° · star
12 more points to reach Rare.
HD 53691 is an uncommon star. It lies about 2,398.2 light-years from Earth, sits in the constellation Mon, shines at apparent magnitude 9.38 and has spectral type B3V.
Its spectrum reads B3V — 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 53691 in the constellation Mon. At apparent magnitude 9.38, a small backyard telescope will bring it into view.
Like any astronomical target, HD 53691 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 53691 scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), Hot blue B-type star, Main-sequence 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.