RA 156.5008° · Dec -57.8269° · star
4 more points to reach Rare.
HD 90578 is an uncommon variable star. It lies about 1,524.1 light-years from Earth, sits in the constellation Car, shines at apparent magnitude 9.3 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 HD 90578 in the constellation Car. At apparent magnitude 9.3, a small backyard telescope will bring it into view.
Like any astronomical target, HD 90578 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 90578 scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Distant (over 1,000 light-years), Hot blue B-type star, Giant star, 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.