RA 338.7503° · Dec 58.6916° · star
4 more points to reach Uncommon.
HD 240001 is a common star. It lies about 2,718 light-years from Earth, sits in the constellation Cep, shines at apparent magnitude 9.72 and has spectral type A5.
Its spectrum reads A5 — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for HD 240001 in the constellation Cep. At apparent magnitude 9.72, a small backyard telescope will bring it into view.
Like any astronomical target, HD 240001 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 240001 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Distant (over 1,000 light-years), Never sets (northern circumpolar) and White A-type 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.