RA 355.3896° · Dec 10.2158° · star
9 more points to reach Rare.
HD 222558 is an uncommon variable star. It sits in the constellation Peg, shines at apparent magnitude 9.91 and has spectral type A0V + A2V.
Its spectrum reads A0V + A2V — 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 222558 in the constellation Peg. At apparent magnitude 9.91, a small backyard telescope will bring it into view.
Like any astronomical target, HD 222558 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 222558 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, White A-type star, Main-sequence star, Strongly variable 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.