RA 220.4823° · Dec -47.3882° · star
5 more points to reach Epic.
Alp Lup is a rare variable star. It lies about 464.6 light-years from Earth, sits in the constellation Lup, shines at apparent magnitude 2.3 and has spectral type B1.5III.
Its spectrum reads B1.5III — 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 Alp Lup in the constellation Lup. At apparent magnitude 2.3, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Alp Lup 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.
Alp Lup scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.
That score comes from 8 science badges — Variable star, Naked-eye visible, Hot blue B-type star, Giant star, Blue-white star, Intrinsically luminous (Mv < −2), 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.