RA 326.6984° · Dec 49.3096° · star
6 more points to reach Epic.
81Pi 2Cyg is a rare star. It lies about 1,105.6 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 4.23 and has spectral type B3III.
Its spectrum reads B3III — 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 81Pi 2Cyg in the constellation Cyg. At apparent magnitude 4.23, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 81Pi 2Cyg 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.
81Pi 2Cyg scores 44 points on Spacedle's rarity scale, which places it in the rare tier. Another 6 points would lift it into a rarer tier.
That score comes from 7 science badges — Star, Distant (over 1,000 light-years), Naked-eye visible, Hot blue B-type star, Giant star, Blue-white star 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.