105 open clusters of the night sky
The Milky Way galaxy contains over 1,000 known open clusters, and undoubtedly hosts a lot more. Here are 105 notable open clusters (GCs), listed by constellation:
| Name | Magnitude | Constellation |
| NGC 752 | 5.7 | Andromeda |
| NGC 6756 | 4.5 | Aquila |
| IC 4651 | 6.9 | Ara |
| NGC 6200 | 7.4 | Ara |
| NGC 6204 | 8.2 | Ara |
| Messier 36 | 6 | Auriga |
| Messier 37 | 5.6 | Auriga |
| Messier 38 | 6.4 | Auriga |
| NGC 1931 | 10. | Auriga |
| Teutsch 2 | 11 | Auriga |
| NGC 1502 | 5.7 | Camelopardalis |
| Beehive Cluster | 3.1 | Cancer |
| Messier 67 | 6.9 | Cancer |
| Caroline's Cluster | 7.2 | Canis Major |
| Collinder 121 | 2.6 | Canis Major |
| Collinder 140 | 3.5 | Canis Major |
| Gaia 1 | 8.3 | Canis Major |
| Little Beehive Cluster | 4.5 | Canis Major |
| NGC 2204 | 8.6 | Canis Major |
| Tau Canis Majoris Cluster | 4.1 | Canis Major |
| NGC 3114 | 4.2 | Carina |
| NGC 3293 | 4.7 | Carina |
| Southern Beehive Cluster | 3.8 | Carina |
| Southern Pleiades | 1.9 | Carina |
| Wishing Well Cluster | 3 | Carina |
| Messier 103 | 7.4 | Cassiopeia |
| Messier 52 | 6.9 | Cassiopeia |
| NGC 129 | 6.5 | Cassiopeia |
| NGC 189 | 8.8 | Cassiopeia |
| NGC 225 | 7 | Cassiopeia |
| NGC 381 | 9.3 | Cassiopeia |
| NGC 457 | 6.4 | Cassiopeia |
| NGC 637 | 8.2 | Cassiopeia |
| NGC 659 | 7.9 | Cassiopeia |
| NGC 663 | 7.1 | Cassiopeia |
| White Rose Cluster | 6.7 | Cassiopeia |
| NGC 5460 | 5.6 | Centaurus |
| NGC 5662 | 5.5 | Centaurus |
| Pearl Cluster | 5.3 | Centaurus |
| Berkeley 59 | Cepheus | |
| NGC 188 | 8.1 | Cepheus |
| NGC 7419 | 13 | Cepheus |
| Coma Star Cluster | 1.8 | Coma Berenices |
| Jewel Box Cluster | 4.2 | Crux |
| IC 5146 | 7.2 | Cygnus |
| Messier 39 | 4.6 | Cygnus |
| NGC 6834 | 7.8 | Cygnus |
| Hodge 301 | 11 | Dorado |
| NGC 2070 | 7.2 | Dorado |
| Messier 35 | 5 | Gemini |
| NGC 2129 | 6.7 | Gemini |
| NGC 2158 | 8.6 | Gemini |
| NGC 2355 | 9.7 | Gemini |
| Messier 48 | 5.8 | Hydra |
| NGC 6791 | 9.5 | Lyra |
| Messier 50 | 5.9 | Monoceros |
| NGC 2232 | 3.9 | Monoceros |
| NGC 2244 | 4.8 | Monoceros |
| NGC 2264 | 3.9 | Monoceros |
| NGC 2301 | 6 | Monoceros |
| Collinder 261 | 10. | Musca |
| NGC 6031 | 8.5 | Norma |
| NGC 6067 | 5.6 | Norma |
| S Normae Cluster | 5.4 | Norma |
| IC 4665 | 4.2 | Ophiuchus |
| Melotte 186 | 3 | Ophiuchus |
| NGC 6633 | 4.6 | Ophiuchus |
| Lambda Orionis Cluster | 2.8 | Orion |
| NGC 1980 | 2.5 | Orion |
| NGC 2169 | 5.9 | Orion |
| NGC 2175 | 6.8 | Orion |
| Trapezium Cluster | 4 | Orion |
| Alpha Persei Cluster | 1.2 | Perseus |
| IC 348 | 7.3 | Perseus |
| Messier 34 | 5.2 | Perseus |
| NGC 869 | 3.7 | Perseus |
| NGC 884 | 3.8 | Perseus |
| Arp-Madore 2 | Puppis | |
| Messier 46 | 6.1 | Puppis |
| Messier 47 | 4.4 | Puppis |
| Messier 93 | 6.2 | Puppis |
| NGC 2439 | 6.9 | Puppis |
| NGC 2451?A | 2.8 | Puppis |
| NGC 2509 | 9.3 | Puppis |
| Pi Puppis Cluster | 2.1 | Puppis |
| Messier 18 | 6.9 | Sagittarius |
| Messier 21 | 5.9 | Sagittarius |
| Messier 23 | 5.5 | Sagittarius |
| Messier 24 | 2.5 | Sagittarius |
| Messier 25 | 4.6 | Sagittarius |
| Butterfly Cluster | 4.2 | Scorpius |
| NGC 6231 | 2.6 | Scorpius |
| NGC 6242 | 6.4 | Scorpius |
| NGC 6281 | 5.4 | Scorpius |
| Ptolemy Cluster | 3.3 | Scorpius |
| Blanco 1 | 4.5 | Sculptor |
| Messier 26 | 8 | Scutum |
| Wild Duck Cluster | 5.8 | Scutum |
| Eagle Nebula | 6 | Serpens |
| IC 4756 | 4.6 | Serpens |
| Hyades | 0.5 | Taurus |
| Pleiades | 1.2 | Taurus |
| NGC 6025 | 5.1 | Triangulum Australe |
| NGC 2547 | 4.7 | Vela |
| Omicron Velorum Cluster | 2.5 | Vela |
| Trumpler 10 | 4.6 | Vela |