RA 51.1185° · Dec -45.8535° · star
11 more points to reach Rare.
HD 21309 is an uncommon star. It lies about 1,052.1 light-years from Earth, sits in the constellation Hor, shines at apparent magnitude 8.17 and has spectral type G6III.
Its spectrum reads G6III — a G-type star: the very same spectral class as our own Sun.
Look for HD 21309 in the constellation Hor. At apparent magnitude 8.17, it is an easy target for binoculars.
Like any astronomical target, HD 21309 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 21309 scores 23 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 11 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Distant (over 1,000 light-years), 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.