RA 333.7188° · Dec -77.5029° · star
2 more points to reach Common.
HD 210400 is a trash star. It lies about 302.8 light-years from Earth, sits in the constellation Oct, shines at apparent magnitude 9.54 and has spectral type G3/G5V.
Its spectrum reads G3/G5V — a G-type star: the very same spectral class as our own Sun.
Look for HD 210400 in the constellation Oct. At apparent magnitude 9.54, a small backyard telescope will bring it into view.
Like any astronomical target, HD 210400 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 210400 scores 13 points on Spacedle's rarity scale, which places it in the trash tier. Another 2 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, Sun-like G-type star and Main-sequence 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.