RA 332.7136° · Dec 58.2013° · star
17 more points to reach Anomaly.
21Zet Cep is an epic variable star. It lies about 836.3 light-years from Earth, sits in the constellation Cep, shines at apparent magnitude 3.39 and has spectral type K1Ibv SB.
Its spectrum reads K1Ibv SB — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
Look for 21Zet Cep in the constellation Cep. At apparent magnitude 3.39, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, 21Zet Cep 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.
21Zet Cep scores 61 points on Spacedle's rarity scale, which places it in the epic tier. Another 17 points would lift it into a rarer tier.
That score comes from 9 science badges — Variable star, Naked-eye visible, Never sets (northern circumpolar), Orange K-type star, Supergiant, Deep red star, Intrinsically luminous (Mv < −2) and Barely variable (under 0.05 mag) — 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.