RA 224.9040° · Dec 39.2653° · star
2 more points to reach Uncommon.
40 Boo is a common star. It lies about 167.9 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 5.64 and has spectral type F1III-IV.
Its spectrum reads F1III-IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for 40 Boo in the constellation Boo. At apparent magnitude 5.64, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 40 Boo 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.
40 Boo 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, Naked-eye visible, Yellow-white F-type star and Giant 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.