RA 284.1687° · Dec -37.3432° · star
1 more point to reach Rare.
HR 7129 is an uncommon variable star. It lies about 430.3 light-years from Earth, sits in the constellation CrA, shines at apparent magnitude 5.36 and has spectral type B3V.
Its spectrum reads B3V — 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 7129 in the constellation CrA. At apparent magnitude 5.36, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, HR 7129 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 7129 scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.
That score comes from 7 science badges — Variable star, Naked-eye visible, Hot blue B-type star, Main-sequence 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.