RA 301.9141° · Dec -20.8328° · star
6 more points to reach Uncommon.
HD 190821 is a common star. It lies about 300.9 light-years from Earth, sits in the constellation Cap, shines at apparent magnitude 8.3 and has spectral type G3/G5V.
Its spectrum reads G3/G5V — a G-type star: the very same spectral class as our own Sun.
Look for HD 190821 in the constellation Cap. At apparent magnitude 8.3, it is an easy target for binoculars.
Like any astronomical target, HD 190821 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 190821 scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, On the zodiac, Sun-like G-type star and Main-sequence 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.