RA 5.0723° · Dec 59.3038° · openngc
28 more points to reach Anomaly.
IC 10 is an epic galaxy. It sits in the constellation Cas and shines at apparent magnitude 10.35.
A galaxy: a gravitationally bound city of stars, gas and dark matter, turning so slowly that a single rotation takes hundreds of millions of years.
Look for IC 10 in the constellation Cas. At apparent magnitude 10.35, a small backyard telescope will bring it into view.
Like any astronomical target, IC 10 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.
IC 10 scores 50 points on Spacedle's rarity scale, which places it in the epic tier. Another 28 points would lift it into a rarer tier.
That score comes from 5 science badges — Galaxy, Irregular galaxy (no shape at all), Never sets (northern circumpolar), Ghostly low surface brightness and Coming towards us — 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.