RA 272.8160° · Dec -29.6396° · star
6 more points to reach Rare.
HD 166309 is an uncommon star. It lies about 518.5 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 7.61 and has spectral type G8III.
Its spectrum reads G8III — a G-type star: the very same spectral class as our own Sun.
Look for HD 166309 in the constellation Sgr. At apparent magnitude 7.61, it is an easy target for binoculars.
Like any astronomical target, HD 166309 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 166309 scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 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 Giant 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.