RA 353.4006° · Dec 60.0507° · star
10 more points to reach Rare.
HD 221671 is an uncommon star. It lies about 688.1 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 7.61 and has spectral type A0II.
Its spectrum reads A0II — 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 221671 in the constellation Cas. At apparent magnitude 7.61, it is an easy target for binoculars.
Like any astronomical target, HD 221671 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 221671 scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Never sets (northern circumpolar), White A-type star and Bright giant — 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.