RA 257.9974° · Dec 14.4877° · star
2 more points to reach Uncommon.
HD 155581 is a common star. It lies about 598.5 light-years from Earth, sits in the constellation Her, shines at apparent magnitude 7.21 and has spectral type K5III.
Its spectrum reads K5III — 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 155581 in the constellation Her. At apparent magnitude 7.21, it is an easy target for binoculars.
Like any astronomical target, HD 155581 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 155581 scores 20 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.
That score comes from 4 science badges — Star, 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.