RA 44.9530° · Dec 57.6632° · star
21 more points to reach Anomaly.
HD 18391 is an epic star. It lies about 2,104.2 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 6.86 and has spectral type G0Ia.
Its spectrum reads G0Ia — a G-type star: the very same spectral class as our own Sun.
Look for HD 18391 in the constellation Cas. At apparent magnitude 6.86, it is an easy target for binoculars.
Like any astronomical target, HD 18391 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.
HD 18391 scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 21 points would lift it into a rarer tier.
That score comes from 7 science badges — Star, Distant (over 1,000 light-years), Never sets (northern circumpolar), Sun-like G-type star, Supergiant, Deep red star and Intrinsically luminous (Mv < −2) — 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.