RA 354.3237° · Dec -20.9320° · star
5 more points to reach Uncommon.
HD 222040 is a common star. It sits in the constellation Aqr, shines at apparent magnitude 10.88 and has spectral type B9IV.
Its spectrum reads B9IV — 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 222040 in the constellation Aqr. At apparent magnitude 10.88, a small backyard telescope will bring it into view.
Like any astronomical target, HD 222040 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 222040 scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, 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.