RA 183.5705° · Dec -64.4085° · star
6 more points to reach Epic.
HR 4653 is a rare variable star. It sits in the constellation Cru, shines at apparent magnitude 6.2 and has spectral type B1.5Ia.
Its spectrum reads B1.5Ia — 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 HR 4653 in the constellation Cru. At apparent magnitude 6.2, it is an easy target for binoculars.
Like any astronomical target, HR 4653 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.
HR 4653 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 6 science badges — Variable star, Under the Southern Cross, Hot blue B-type star, Supergiant, Gently variable 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.