Open cluster

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way Galaxy, and many more are thought to exist. They are loosely bound by mutual gravitational attraction and become disrupted by close encounters with other clusters and clouds of gas as they orbit the galactic center. This can result in a migration to the main body of the galaxy and a loss of cluster members through internal close encounters. Open clusters generally survive for a few hundred million years, with the most massive ones surviving for a few billion years. In contrast, the more massive globular clusters of stars exert a stronger gravitational attraction on their members, and can survive for longer. Open clusters have been found only in spiral and irregular galaxies, in which active star formation is occurring.

Uses material from the Wikipedia article "Open cluster", which is released under the Creative Commons BY-SA 3.0.
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Astronomical object DistanceWiki
2MASS J10442251-5939258Open clusterB8068
Blanco 1Open cluster837[x]
Cat's Paw NebulaOpen cluster5497[x]
Cl Pismis 10Open cluster8160
Cl Pismis 12Open cluster8145
Cl Pismis 15Open cluster8151
Cl Pismis 16Open cluster8153
Cl Pismis 17Open cluster8149
Cl Pismis 18Open cluster8148
Cl Pismis 19Open cluster8150
Cl Pismis 2Open cluster8141
Cl Pismis 3Open cluster8155
Cl Trumpler 14 29Open clusterB8905
Cl Trumpler 16 242Open clusterB8271
Cocoon NebulaOpen cluster3182[x]
Col 107Open cluster5589
Col 121Open cluster1434
Col 132Open cluster1576
Col 135Open cluster997
Col 140Open cluster1284
Col 173Open cluster1125
Col 228Open cluster7095
Col 240Open cluster5139
Col 359Open cluster607
Col 394Open cluster2194
Col 69Open cluster1394
Col 70Open cluster1128
Col 89Open cluster4271
Col 97Open cluster1987
CPD-58 2625Open clusterO8900
CPD-59 2591Open clusterO8227
CPD-59 2626Open clusterO8248
CPD-59 2632Open clusterB8194
Eagle NebulaOpen cluster6986[x]
GM CepheiOpen clusterF2702
HD 206183Open clusterO2039
HD 206773Open clusterB2330
HD 239729Open clusterB1117
HR 8281Open clusterO1977[x]
HyadesOpen cluster166[x]
HyadesOpen cluster182[x]
IC 1396Open cluster2584[x]
IC 1805Open cluster6059[x]
IC 1848Open cluster6553[x]
IC 2391Open cluster568[x]
IC 2602Open cluster490[x]
IC 2944Open cluster5910[x]
IC 348Open cluster1263[x]
IC 4651Open cluster2919[x]
IC 4665Open cluster1124[x]
IC 4756Open cluster1575[x]
Jewel BoxOpen cluster6284[x]
KappaOpen cluster148[x]
Lagoon NebulaOpen cluster4496[x]
M16Open cluster5753[x]
M17Open cluster4245[x]
M20Open cluster2659[x]
M21Open cluster3925[x]
M23Open cluster2045[x]
M25Open cluster2002[x]
M35Open cluster2682[x]
M36Open cluster4324[x]
M38Open cluster3531[x]
M39Open cluster1044[x]
M41Open cluster2265[x]
M46Open cluster4476[x]
M47Open cluster1556[x]
M50Open cluster3051[x]
M52Open cluster4626[x]
M6Open cluster1587[x]
M7Open cluster959[x]
Mel 111Open cluster297[x]
Mel 22Open cluster507[x]
Mel 227Open cluster361
MillerOpen cluster148[x]
NGC 1027Open cluster2529[x]
NGC 129Open cluster5287[x]
NGC 1647Open cluster1688[x]
NGC 1664Open cluster3973[x]
NGC 1746Open cluster1998[x]
NGC 1893Open cluster10772[x]
NGC 1931Open cluster7017[x]
NGC 1981Open cluster1293
NGC 2232Open cluster1194[x]
NGC 2244Open cluster4750[x]
NGC 225Open cluster2169[x]
NGC 2264Open cluster2066[x]
NGC 2353Open cluster3644
NGC 2362Open cluster4575[x]
NGC 2374Open cluster4748[x]
NGC 2414Open cluster11333
NGC 2423Open cluster2470
NGC 2451AOpen cluster771
NGC 2516Open cluster1392[x]
NGC 2527Open cluster1990
NGC 2546Open cluster2975[x]
NGC 2547Open cluster1451[x]
NGC 2632Open cluster524[x]
NGC 2669Open cluster3570
NGC 2670Open cluster3894
NGC 281Open cluster8004[x]
NGC 3114Open cluster2951[x]
NGC 3324Open cluster7715[x]
NGC 3532Open cluster1585[x]
NGC 3572Open cluster6495
NGC 4463Open cluster3399[x]
NGC 457Open cluster7714[x]
NGC 4609Open cluster4039[x]
NGC 5138Open cluster6368
NGC 5281Open cluster3803[x]
NGC 5460Open cluster2152[x]
NGC 5617Open cluster4933[x]
NGC 5662Open cluster2151[x]
NGC 5822Open cluster2951[x]
NGC 6087Open cluster2824[x]
NGC 6124Open cluster1650[x]
NGC 6134Open cluster2981[x]
NGC 6152Open cluster3312[x]
NGC 6193Open cluster3787[x]
NGC 6200Open cluster6710[x]
NGC 6208Open cluster3020[x]
NGC 6231Open cluster4023[x]
NGC 6242Open cluster3709[x]
NGC 6259Open cluster3385
NGC 6383Open cluster3212
NGC 6416Open cluster2417
NGC 6425Open cluster2644
NGC 6520Open cluster5096[x]
NGC 6530Open cluster4293[x]
NGC 6546Open cluster3057
NGC 6604Open cluster5507[x]
NGC 663Open cluster6339[x]
NGC 6705Open cluster6137[x]
NGC 6709Open cluster3591[x]
NGC 6716Open cluster2577
NGC 6820Open cluster6510[x]
NGC 6871Open cluster5188[x]
NGC 6940Open cluster2454[x]
NGC 7243Open cluster2729[x]
NGC 752Open cluster1479[x]
NGC 7538Open cluster9003[x]
NGC 7789Open cluster7494[x]
OmegaOpen cluster5504[x]
Pismis 4Open cluster1956
PleiadesOpen cluster363[x]
Running Man NebulaOpen cluster1289[x]
Stock 1Open cluster1014
Stock 2Open cluster977
Tr 14Open cluster8976
Tr 16Open cluster8835
Tr 24Open cluster3639
Trifid NebulaOpen cluster5197[x]
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