RA 304.8299° · Dec -76.1265° · star
12 more points to reach Rare.
HD 191803 is an uncommon variable star. It lies about 737.9 light-years from Earth, sits in the constellation Oct, shines at apparent magnitude 9.15 and has spectral type A9IV.
Its spectrum reads A9IV — 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 191803 in the constellation Oct. At apparent magnitude 9.15, a small backyard telescope will bring it into view.
Like any astronomical target, HD 191803 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 191803 scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, White A-type star, Subgiant (leaving the main sequence), 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.