RA 175.1143° · Dec 57.9704° · star
4 more points to reach Uncommon.
HR 4493 is a common star. It lies about 508.8 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 6.35 and has spectral type B9p....
Its spectrum reads B9p... — 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 HR 4493 in the constellation UMa. At apparent magnitude 6.35, it is an easy target for binoculars.
Like any astronomical target, HR 4493 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 4493 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Never sets (northern circumpolar), Hot blue B-type 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.