RA 179.6986° · Dec -64.3396° · star
8 more points to reach Epic.
HR 4578 is a rare star. It sits in the constellation Cru, shines at apparent magnitude 5.59 and has spectral type A3Ib.
Its spectrum reads A3Ib — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for HR 4578 in the constellation Cru. At apparent magnitude 5.59, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, HR 4578 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 4578 scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 8 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Naked-eye visible, Under the Southern Cross, White A-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.