RA 173.3370° · Dec -23.1370° · star
6 more points to reach Uncommon.
HD 100440 is a common star. It sits in the constellation Crt, shines at apparent magnitude 8.55 and has spectral type K1/K2Vp....
Its spectrum reads K1/K2Vp... — 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 100440 in the constellation Crt. At apparent magnitude 8.55, it is an easy target for binoculars.
Like any astronomical target, HD 100440 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 100440 scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, Orange K-type star, Main-sequence 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.