RA 284.0158° · Dec 17.9953° · star
7 more points to reach Rare.
HR 7147 is an uncommon variable star. It lies about 1,016.1 light-years from Earth, sits in the constellation Her, shines at apparent magnitude 6.64 and has spectral type B9sp....
Its spectrum reads B9sp... — 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 7147 in the constellation Her. At apparent magnitude 6.64, it is an easy target for binoculars.
Like any astronomical target, HR 7147 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 7147 scores 27 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 7 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, Blue-white star, Barely variable (under 0.05 mag) 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.