RA 174.8427° · Dec -39.3854° · star
9 more points to reach Rare.
HD 101309 is an uncommon variable star. It lies about 548.2 light-years from Earth, sits in the constellation Cen, shines at apparent magnitude 7.87 and has spectral type G8IV.
Its spectrum reads G8IV — a G-type star: the very same spectral class as our own Sun.
Look for HD 101309 in the constellation Cen. At apparent magnitude 7.87, it is an easy target for binoculars.
Like any astronomical target, HD 101309 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 101309 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Sun-like G-type star, Subgiant (leaving the main sequence), 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.