RA 174.4518° · Dec -63.3232° · star
21 more points to reach Anomaly.
HD 101131 is an epic variable star. It lies about 2,416 light-years from Earth, sits in the constellation Cen, shines at apparent magnitude 7.14 and has spectral type O7n.
Its spectrum reads O7n — an O-type star — the hottest, rarest main class there is. Fewer than one star in a million is an O, and none of them lasts long.
Look for HD 101131 in the constellation Cen. At apparent magnitude 7.14, it is an easy target for binoculars.
Like any astronomical target, HD 101131 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.
HD 101131 scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 21 points would lift it into a rarer tier.
That score comes from 7 science badges — Variable star, Distant (over 1,000 light-years), Blazing O-type 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.