RA 220.2873° · Dec 13.7283° · star
1 more point to reach Uncommon.
30Zet Boo is a common star. It lies about 175.7 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 3.78 and has spectral type A3IVn.
Its spectrum reads A3IVn — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for 30Zet Boo in the constellation Boo. At apparent magnitude 3.78, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 30Zet 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.
30Zet Boo scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.
That score comes from 4 science badges — Star, Naked-eye visible, White A-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.