RA 331.9546° · Dec -38.7550° · star
8 more points to reach Rare.
HD 209939 is an uncommon star. It lies about 1,019.2 light-years from Earth, sits in the constellation Gru, shines at apparent magnitude 8.9 and has spectral type K4III.
Its spectrum reads K4III — 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 209939 in the constellation Gru. At apparent magnitude 8.9, it is an easy target for binoculars.
Like any astronomical target, HD 209939 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 209939 scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Distant (over 1,000 light-years), Orange K-type star, Giant star and Deep red 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.