RA 183.0497° · Dec 77.6162° · star
7 more points to reach Rare.
HR 4646 is an uncommon variable star. It lies about 108.9 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 5.14 and has spectral type A5m.
Its spectrum reads A5m — 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 4646 in the constellation Cam. At apparent magnitude 5.14, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, HR 4646 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 4646 scores 27 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 7 points would lift it into a rarer tier.
That score comes from 6 science badges — Variable star, Naked-eye visible, Never sets (northern circumpolar), White A-type star, Barely variable (under 0.05 mag) and A named variable 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.