RA 278.1579° · Dec -16.8839° · openngc
8 more points to reach Common.
NGC 6645 is a trash cluster. It sits in the constellation Sgr and shines at apparent magnitude 8.5.
NGC 6645 is a trash cluster worth 7 points across 1 science badge. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.
Look for NGC 6645 in the constellation Sgr. At apparent magnitude 8.5, it is an easy target for binoculars.
Like any astronomical target, NGC 6645 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.
NGC 6645 scores 7 points on Spacedle's rarity scale, which places it in the trash tier. Another 8 points would lift it into a rarer tier.
That score comes from 1 science badge — Star cluster — 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.