RA 179.0040° · Dec -17.1508° · star
11 more points to reach Rare.
30Eta Crt is an uncommon star. It lies about 251.5 light-years from Earth, sits in the constellation Crt, shines at apparent magnitude 5.17 and has spectral type A0V.
Its spectrum reads A0V — 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 30Eta Crt in the constellation Crt. At apparent magnitude 5.17, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 30Eta Crt 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.
30Eta Crt scores 23 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 11 points would lift it into a rarer tier.
That score comes from 5 science badges — Star, Naked-eye visible, White A-type star, Main-sequence star and Blue-white 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.