RA 186.2750° · Dec 26.1000° · openngc
4 more points to reach Rare.
Coma Star Cluster is an uncommon cluster. It lies about 280.2 light-years from Earth and sits in the constellation Com.
An open cluster: a few hundred stars born together out of one collapsing cloud, still drifting along in loose formation.
Look for Coma Star Cluster in the constellation Com.
Like any astronomical target, Coma Star Cluster 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.
Coma Star Cluster scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.
That score comes from 4 science badges — Star cluster, Has a proper name, Open cluster and Bigger on the sky than the full Moon — 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.