RA 299.6605° · Dec -30.9276° · star
7 more points to reach Rare.
HD 188921 is an uncommon star. It lies about 543.6 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 9.16 and has spectral type G5IV.
Its spectrum reads G5IV — a G-type star: the very same spectral class as our own Sun.
Look for HD 188921 in the constellation Sgr. At apparent magnitude 9.16, a small backyard telescope will bring it into view.
Like any astronomical target, HD 188921 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 188921 scores 27 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 7 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Toward the galactic centre, On the zodiac, Sun-like G-type star and Subgiant (leaving the main sequence) — 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.