RA 301.7414° · Dec 46.2995° · star
5 more points to reach Uncommon.
HD 191240 is a common variable star. It sits in the constellation Cyg, shines at apparent magnitude 9.31 and has spectral type A2e + K0.
Its spectrum reads A2e + K0 — 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 191240 in the constellation Cyg. At apparent magnitude 9.31, a small backyard telescope will bring it into view.
Like any astronomical target, HD 191240 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 191240 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 — Variable star, White A-type star, Gently 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.