RA 111.2120° · Dec -19.0123° · star
8 more points to reach Epic.
HR 2831 is a rare star. It lies about 2,329.7 light-years from Earth, sits in the constellation CMa, shines at apparent magnitude 6.24 and has spectral type A2Ib/II.
Its spectrum reads A2Ib/II — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for HR 2831 in the constellation CMa. At apparent magnitude 6.24, it is an easy target for binoculars.
Like any astronomical target, HR 2831 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.
HR 2831 scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 8 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), White A-type star, Supergiant and Intrinsically luminous (Mv < −2) — 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.