RA 211.0975° · Dec 64.3758° · star
11 more points to reach Epic.
Thuban is a rare star. It lies about 303.1 light-years from Earth, sits in the constellation Dra, shines at apparent magnitude 3.67 and has spectral type A0III SB.
Its spectrum reads A0III SB — 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 Thuban in the constellation Dra. At apparent magnitude 3.67, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Thuban 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.
Thuban scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 11 points would lift it into a rarer tier.
That score comes from 7 science badges — Star, Naked-eye visible, Has a proper name, Never sets (northern circumpolar), White A-type star, Giant 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.