RA 270.6373° · Dec -40.0879° · star
15 more points to reach Epic.
HD 164340 is a rare variable star. It lies about 2,416 light-years from Earth, sits in the constellation CrA, shines at apparent magnitude 9.3 and has spectral type B0III.
Its spectrum reads B0III — 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 164340 in the constellation CrA. At apparent magnitude 9.3, a small backyard telescope will bring it into view.
Like any astronomical target, HD 164340 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 164340 scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.
That score comes from 7 science badges — Variable star, Distant (over 1,000 light-years), Hot blue B-type star, Giant star, Blue-white 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.