RA 299.1199° · Dec 73.6160° · star
1 more point to reach Uncommon.
HD 190020 is a common variable star. It lies about 652.3 light-years from Earth, sits in the constellation Dra, shines at apparent magnitude 9.13 and has spectral type F5V + F5V.
Its spectrum reads F5V + F5V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for HD 190020 in the constellation Dra. At apparent magnitude 9.13, a small backyard telescope will bring it into view.
Like any astronomical target, HD 190020 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 190020 scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Never sets (northern circumpolar), Yellow-white F-type star, Main-sequence 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.