RA 267.8023° · Dec -30.5569° · star
11 more points to reach Rare.
HR 6645 is an uncommon star. It lies about 1,510 light-years from Earth, sits in the constellation Sco, shines at apparent magnitude 6.7 and has spectral type B9.5IV/V.
Its spectrum reads B9.5IV/V — 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 6645 in the constellation Sco. At apparent magnitude 6.7, it is an easy target for binoculars.
Like any astronomical target, HR 6645 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 6645 scores 23 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 11 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), On the zodiac, Hot blue B-type star and Subgiant (leaving the main sequence) — 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.