RA 83.1820° · Dec 32.1920° · star
15 more points to reach Epic.
25Chi Aur is a rare star. It sits in the constellation Aur, shines at apparent magnitude 4.71 and has spectral type B5Iab.
Its spectrum reads B5Iab — 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 25Chi Aur in the constellation Aur. At apparent magnitude 4.71, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 25Chi Aur 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.
25Chi Aur scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Naked-eye visible, Hot blue B-type star and Supergiant — 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.