RA 218.0195° · Dec 38.3083° · star
13 more points to reach Epic.
Seginus is a rare variable star. It lies about 86.8 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 3.04 and has spectral type A7IIIvar.
Its spectrum reads A7IIIvar — 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 Seginus in the constellation Boo. At apparent magnitude 3.04, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Seginus 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.
Seginus scores 37 points on Spacedle's rarity scale, which places it in the rare tier. Another 13 points would lift it into a rarer tier.
That score comes from 7 science badges — Variable star, Naked-eye visible, Has a proper name, White A-type star, Giant star, Barely variable (under 0.05 mag) and A named variable 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.