RA 214.8178° · Dec 13.0043° · star
3 more points to reach Uncommon.
18 Boo is a common star. It lies about 85.1 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 5.41 and has spectral type F5IV.
Its spectrum reads F5IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for 18 Boo in the constellation Boo. At apparent magnitude 5.41, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 18 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.
18 Boo scores 19 points on Spacedle's rarity scale, which places it in the common tier. Another 3 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 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.