RA 218.4724° · Dec 46.0561° · star
4 more points to reach Common.
HD 128139 is a trash star. It lies about 716.8 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 10.22 and has spectral type G5.
Its spectrum reads G5 — a G-type star: the very same spectral class as our own Sun.
Look for HD 128139 in the constellation Boo. At apparent magnitude 10.22, a small backyard telescope will bring it into view.
Like any astronomical target, HD 128139 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 128139 scores 11 points on Spacedle's rarity scale, which places it in the trash tier. Another 4 points would lift it into a rarer tier.
That score comes from 2 science badges — Star and Sun-like G-type 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.