RA 57.3071° · Dec 70.8710° · star
2 more points to reach Uncommon.
HR 1138 is a common star. It lies about 347 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 5.4 and has spectral type A2m.
Its spectrum reads A2m — 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 HR 1138 in the constellation Cam. At apparent magnitude 5.4, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, HR 1138 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.
HR 1138 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, Never sets (northern circumpolar) and White A-type 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.