RA 345.1542° · Dec -52.2680° · star
4 more points to reach Common.
HD 217309 is a trash star. It lies about 209.2 light-years from Earth, sits in the constellation Gru, shines at apparent magnitude 9.86 and has spectral type K2IV.
Its spectrum reads K2IV — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
Look for HD 217309 in the constellation Gru. At apparent magnitude 9.86, a small backyard telescope will bring it into view.
Like any astronomical target, HD 217309 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 217309 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 3 science badges — Star, Orange K-type star and Subgiant (leaving the main sequence) — 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.