RA 172.6087° · Dec -15.3222° · star
12 more points to reach Rare.
HD 100022 is an uncommon variable star. It lies about 327.1 light-years from Earth, sits in the constellation Crt, shines at apparent magnitude 9.4 and has spectral type G2V.
Its spectrum reads G2V — a G-type star: the very same spectral class as our own Sun.
Look for HD 100022 in the constellation Crt. At apparent magnitude 9.4, a small backyard telescope will bring it into view.
Like any astronomical target, HD 100022 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 100022 scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Sun-like G-type star, Main-sequence star, 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.