Open Clusters (original) (raw)

Stars are sometimes concentrated into tight clusters with a diameter of about ten or twenty light years because the stars all formed in the same nebula. These clusters usually disperse over millions of years although there are some that are more than one billion years old.

M36 - a bright star cluster in Auriga.

Below is a list of the 250 most prominent open clusters in our corner of the Galaxy. Note that because of the relatively large distances to these clusters, that they all tend to have a low galactic latitude.

1 2 3 4 5 6 7 8 9 10 11 Catalog Other Equatorial Galactic VMag Diam N Distance Con Name Name Coordinates Coordinates (') (ly) RA (2000) Dec l� b� [1] [2] Blanco 1 Zeta Scl cluster 00 04.3 -29 56 15.0 -79.3 4.5 90' 30 620 880 Scl NGC 129 00 29.9 +60 14 120.3 -2.5 6.5 20' 35 5220 5300 Cas NGC 225 00 43.4 +61 47 122.0 -1.1 7.0 12' 15 2050 2140 Cas NGC 188 00 44.4 +85 20 122.8 +22.5 8.1 17' 120 5060 6680 Cep NGC 281 00 52.8 +56 38 123.1 -6.3 7.4 20' ? -- 9590 Cas NGC 457 Kachina Doll 01 19.1 +58 20 126.6 -4.3 6.4 20' 80 9130 7920 Cas NGC 581 M103 01 33.2 +60 42 128.0 -1.8 7.4 5' 25 8810 7160 Cas NGC 654 01 44.1 +61 53 129.1 -0.4 6.5 5' 60 5220 6660 Cas NGC 659 01 44.2 +60 42 129.4 -1.5 7.9 5' 40 6850 6320 Cas NGC 663 01 46.0 +61 15 129.5 -0.9 7.1 14' 80 7180 6370 Cas Col 463 01 48.4 +71 57 127.4 +9.6 5.7 30' 40 1960 2290 Cas NGC 752 01 57.8 +37 41 137.2 -23.3 5.7 75' 60 1300 1490 And NGC 744 01 58.5 +55 29 132.4 -6.2 7.9 10' 20 4890 3940 Per Stock 2 02 15.0 +59 16 133.4 -1.9 4.4 45' 50 1040 990 Cas NGC 869 h Persei 02 19.0 +57 09 134.6 -3.7 4.3 18' 200 7180 6780 Per NGC 884 Chi Persei 02 22.4 +57 07 135.1 -3.6 4.4 18' 150 7500 7650 Per IC 1805 02 32.7 +61 27 134.7 +0.9 6.5 20' 40 6850 6150 Cas NGC 957 02 33.5 +57 33 136.3 -2.7 7.6 11' 30 7180 5920 Per Tr 2 02 37.3 +55 59 137.4 -3.9 5.9 18' 20 1960 2120 Per NGC 1039 M34 02 42.0 +42 47 143.6 -15.6 5.2 36' 60 1440 1630 Per NGC 1027 02 42.7 +61 33 135.8 +1.5 6.7 20' 40 3260 2520 Cas IC 1848 02 51.3 +60 27 137.2 +0.9 6.5 18' 10 7180 6530 Cas Col 33 02 59.3 +60 24 138.1 +1.3 5.9 36' 25 -- -- Cas Tr 3 03 11.8 +63 15 138.0 +4.6 7.0 24' 30 -- -- Cas NGC 1245 03 14.7 +47 15 146.6 -8.9 8.4 9' 200 7500 9380 Per Stock 23 Pazmino's cluster 03 16.3 +60 02 140.1 +2.1 6.5 14' 25 -- -- Cam Mel 20 Alpha Per cluster 03 22.0 +49 00 146.7 -6.8 1.2 300' 50 550 600 Per NGC 1342 03 31.6 +37 20 155.0 -15.4 6.7 15' 40 1790 2170 Per IC 348 03 44.5 +32 09 160.4 -17.7 7.3 7' 20 1270 1260 Per Mel 22 M45 Pleiades 03 47.0 +24 07 166.6 -23.5 1.2 120' 100 410 490 Tau NGC 1444 03 49.4 +52 40 148.1 -1.3 6.6 4' 20 3260 3910 Per NGC 1502 04 07.7 +62 20 143.7 +7.7 5.7 8' 45 3100 2680 Cam NGC 1528 04 15.4 +51 14 152.1 +0.3 6.4 16' 40 2610 2530 Per NGC 1545 04 20.9 +50 15 153.4 +0.2 6.2 18' 20 2610 2320 Per Mel 25 Hyades 04 27.0 +16 00 180.0 -22.2 0.5 330' 40 155 150 Tau NGC 1582 04 32.0 +43 51 159.3 -2.9 7.0 20' 20 -- -- Per NGC 1647 04 46.0 +19 04 180.4 -16.8 6.4 40' 200 1790 1760 Tau NGC 1662 04 48.5 +10 56 187.7 -21.1 6.4 20' 35 1300 1425 Ori NGC 1664 04 51.1 +43 42 161.7 -0.4 7.6 15' 20 3910 3910 Aur NGC 1746 05 03.6 +23 49 179.0 -10.7 6.1 42' 20 1370 2050 Tau NGC 1778 05 08.1 +37 03 168.9 -2.0 7.7 7' 25 4400 4790 Aur NGC 1807 05 10.7 +16 32 186.1 -13.5 7.0 15' 20 -- -- Tau NGC 1817 05 12.1 +16 42 186.1 -13.1 7.7 15' 60 5710 6430 Tau NGC 1857 05 20.2 +39 21 168.4 +1.3 7.0 6' 40 6200 -- Aur Col 464 05 22.5 +73 17 139.4 +19.9 4.2 120' 50 -- -- Cam Col 62 05 22.5 +41 00 167.3 +2.6 4.2 28' 15 -- -- Aur NGC 1893 05 22.7 +33 24 173.6 -1.7 7.5 11' 60 13000 10700 Aur Col 65 05 26.0 +16 06 188.5 -10.7 3.0 220' 15 -- -- Ori NGC 1912 M38 05 28.7 +35 50 172.3 +0.7 6.4 20' 100 4310 3480 Aur Col 69 Lambda Ori clus. 05 35.1 +09 56 195.1 -12.0 2.8 65' 20 1630 1440 Ori NGC 1981 05 35.2 -04 26 208.1 -19.0 4.2 28' 20 1300 -- Ori NGC 1977 05 35.3 -04 49 208.5 -19.1 7.0 20' ? -- -- Ori NGC 1976 Trapezium 05 35.4 -05 23 209.0 -19.4 3.7 48' 10 1470 1300 Ori NGC 1980 05 35.4 -05 55 209.5 -19.6 2.5 15' 30 -- -- Ori Col 70 Orion's Belt 05 36.0 -01 00 205.0 -17.2 0.4 140' 100 1400 1260 Ori NGC 1960 M36 05 36.1 +34 08 174.5 +1.0 6.0 10' 60 4140 4300 Aur NGC 2099 M37 05 52.4 +32 33 177.7 +3.1 5.6 14' 150 4400 4510 Aur NGC 2129 06 01.0 +23 18 186.6 +0.1 6.7 5' 40 6520 4940 Gem NGC 2169 06 08.4 +13 57 195.6 -2.9 5.9 5' 30 3590 3430 Gem NGC 2168 M35 06 08.9 +24 20 186.6 +2.2 5.0 25' 200 2840 2660 Gem NGC 2175 06 09.8 +20 19 190.2 +0.4 6.8 5' 60 6360 5310 Ori Col 89 06 18.0 +23 38 188.2 +3.7 5.7 48' 15 4240 -- Gem NGC 2232 06 27.0 -04 45 214.4 -7.6 3.9 45' 20 1300 1170 Mon Col 97 06 31.4 +05 55 205.4 -1.8 5.4 25' 15 -- 2050 Mon NGC 2244 06 32.4 +04 52 206.4 -2.0 4.8 30' 100 5540 4710 Mon NGC 2251 06 34.7 +08 22 203.6 +0.1 7.3 10' 30 5060 4330 Mon NGC 2252 06 34.9 +05 23 206.3 -1.2 7.7 20' 30 -- -- Mon Col 106 06 37.1 +05 57 206.0 -0.5 4.6 40' 20 -- -- Mon Col 107 06 37.8 +04 44 207.2 -0.9 5.1 35' 15 5540 5670 Mon NGC 2264 Christmas Tree 06 41.1 +09 53 203.0 +2.2 3.9 40' 40 2450 2180 Mon NGC 2287 M41 06 47.0 -20 44 231.1 -10.2 4.5 40' 80 2410 2260 CMa NGC 2286 06 47.6 -03 10 215.3 -2.3 7.5 14' 50 4240 9450 Mon NGC 2281 06 49.3 +41 04 175.0 +17.1 5.4 25' 30 1630 1820 Aur NGC 2301 06 51.8 +00 28 212.6 +0.3 6.0 14' 80 2450 2840 Mon Col 121 Omicron CMa clus. 06 54.2 -24 38 235.4 -10.4 2.6 80' 20 3820 1540 CMa NGC 2323 M50 07 03.2 -08 20 221.7 -1.2 5.9 14' 80 2970 3030 Mon NGC 2324 07 04.2 +01 03 213.4 +3.3 8.4 7' 70 9460 12410 Mon NGC 2335 07 06.6 -10 05 223.6 -1.3 7.2 10' 35 3260 4620 Mon NGC 2345 07 08.3 -13 10 226.5 -2.3 7.7 12' 70 5870 7340 CMa NGC 2343 07 08.3 -10 38 224.3 -1.1 6.7 5' 20 3260 3440 Mon NGC 2354 07 14.3 -25 44 238.4 -6.8 6.5 18' 100 6030 13300 CMa NGC 2353 07 14.6 -10 17 224.7 +0.4 7.1 18' 30 3590 3650 Mon Col 132 07 15.4 -30 41 243.0 -8.8 3.6 95' 25 -- 1540 CMa Col 135 07 17.3 -36 49 248.8 -11.1 2.1 50' 15 -- 1030 Pup NGC 2360 07 17.8 -15 36 229.8 -1.4 7.2 13' 80 5320 6150 CMa NGC 2362 Tau CMa cluster 07 17.8 -24 57 238.1 -5.7 4.1 5' 60 5060 4530 CMa NGC 2367 07 20.1 -21 54 235.6 -3.8 7.9 4' 30 6520 6540 CMa Col 140 07 23.9 -32 12 245.2 -7.9 3.5 42' 30 980 1320 CMa NGC 2374 07 24.0 -13 15 228.4 +1.0 8.0 15' 25 4240 4790 CMa NGC 2384 07 25.1 -21 02 235.4 -2.4 7.4 5' 15 6520 6900 CMa NGC 2395 07 27.2 +13 36 204.6 +14.0 8.0 13' 30 3910 1670 Gem NGC 2396 07 28.1 -11 44 227.5 +2.7 7.4 10' 30 -- -- Pup NGC 2414 07 33.3 -15 26 231.4 +2.0 7.9 5' 35 8150 11270 Pup NGC 2422 M47 07 36.6 -14 30 231.0 +3.1 4.4 25' 30 1570 1600 Pup NGC 2423 07 37.1 -13 51 230.5 +3.6 6.7 12' 40 2840 2500 Pup Mel 71 07 37.5 -12 04 228.9 +4.5 7.1 8' 80 9130 10290 Pup NGC 2439 07 40.8 -31 38 246.4 -4.4 6.9 9' 80 5250 12570 Pup NGC 2437 M46 07 41.8 -14 48 231.9 +4.1 6.1 20' 100 4600 4480 Pup NGC 2447 M93 07 44.6 -23 51 240.1 +0.2 6.2 10' 80 3590 3380 Pup NGC 2451 07 45.4 -37 58 252.4 -6.7 2.8 45' 40 720 800 Pup NGC 2477 07 52.3 -38 33 253.6 -5.8 5.8 15' 160 4240 3990 Pup NGC 2467 07 52.6 -26 23 243.1 +0.4 7.1 15' 50 11100 4420 Pup NGC 2482 07 54.9 -24 18 241.6 +2.0 7.3 12' 40 2610 4380 Pup NGC 2483 07 55.8 -27 55 244.8 +0.3 7.6 9' 30 9460 5410 Pup NGC 2489 07 56.2 -30 03 246.7 -0.8 7.9 7' 45 3910 12910 Pup NGC 2516 07 58.3 -60 52 273.9 -15.9 3.8 30' 80 1440 1330 Car NGC 2506 08 00.2 -10 46 230.6 +10.0 7.6 12' 150 8970 11300 Mon Col 173 08 03.3 -46 20 261.4 -8.1 0.6 370' 20 1080 1370 Pup NGC 2527 08 05.3 -28 09 246.1 +1.9 6.5 10' 40 1960 1960 Pup NGC 2533 08 07.0 -29 54 247.8 +1.3 7.6 5' 60 5540 11000 Pup NGC 2539 08 10.7 -12 49 233.7 +11.1 6.5 9' 50 4170 4450 Pup NGC 2547 08 10.7 -49 16 264.6 -8.5 4.7 25' 80 1300 1480 Vel NGC 2546 08 12.4 -37 37 254.9 -2.0 6.3 70' 40 3260 3000 Pup NGC 2548 M48 08 13.8 -05 48 227.9 +15.4 5.8 30' 80 1990 2510 Hya NGC 2567 08 18.6 -30 38 249.8 +3.0 7.4 9' 40 5540 5470 Pup NGC 2571 08 18.9 -29 44 249.1 -3.6 7.0 8' 30 6850 4380 Pup NGC 2579 08 21.1 -36 11 254.7 +0.3 7.5 9' 20 3260 3370 Pup Pismis 4 08 34.5 -44 16 262.7 -2.4 5.9 18' 45 1960 1930 Vel NGC 2627 08 37.3 -29 56 251.6 +6.7 8.4 10' 60 -- 6630 Pyx NGC 2645 08 39.3 -46 13 264.8 -2.9 7.0 3' 15 5220 5440 Vel NGC 2632 M44 Praesepe 08 40.1 +19 59 205.5 +32.5 3.1 70' 50 590 610 Can IC 2391 Omicron Velorum 08 40.2 -53 04 270.4 -6.9 2.5 60' 30 460 570 Vel IC 2395 08 41.1 -48 12 266.6 -3.8 4.6 17' 40 2770 2300 Vel NGC 2669 08 44.9 -52 57 270.7 -6.3 6.1 20' 40 3260 3410 Vel NGC 2670 08 45.5 -48 47 267.5 -3.6 7.8 8' 30 3260 3870 Vel Tr 10 08 47.8 -42 29 262.8 +0.6 4.6 14' 40 1240 1380 Vel NGC 2682 M67 08 50.4 +11 49 215.6 +31.7 6.9 25' 200 2350 2960 Can IC 2488 09 27.6 -56 59 277.8 -4.4 7.4 18' 70 -- 3700 Vel NGC 2910 09 30.4 -52 54 275.3 -1.2 7.2 4' 30 4310 8500 Vel NGC 2925 09 33.7 -53 25 276.0 -1.2 8.3 10' 40 2640 2520 Vel NGC 3114 10 02.7 -60 07 283.3 -3.8 4.2 36' 100 2940 2970 Car NGC 3228 10 21.8 -51 43 280.8 +4.6 6.0 5' 15 1630 1770 Vel NGC 3247 10 26.0 -57 55 284.6 -0.3 7.6 5' 20 4570 5050 Car IC 2581 10 27.4 -57 38 284.6 +0.0 4.3 5' 25 5410 7980 Car NGC 3293 Gem Cluster 10 35.9 -58 14 285.9 +0.1 4.7 6' 100 8480 7590 Car NGC 3324 10 37.3 -58 38 286.2 -0.2 6.7 12' 100 10800 7560 Car NGC 3330 10 38.6 -54 09 284.2 +3.8 7.4 5' 30 4530 2920 Vel Col 228 10 43.0 -60 01 287.5 -1.0 4.4 14' 80 8480 7180 Car IC 2602 10 43.2 -64 24 289.6 -4.9 1.9 100' 60 510 530 Car Tr 14 10 43.9 -59 34 287.4 -0.6 5.5 5' 40 9460 8910 Car Tr 16 Eta Car cluster 10 45.1 -59 43 287.6 -0.7 5.0 10' 80 9460 8720 Car NGC 3519 11 04.4 -61 21 290.5 -1.1 7.7 6' 30 -- 4690 Car Fe 1 11 06.0 -59 49 290.0 +0.4 4.7 25' 40 -- 3780 Car NGC 3532 11 06.4 -58 40 289.6 +1.5 3.0 50' 150 1630 1590 Car NGC 3572 11 10.4 -60 13 290.7 +0.2 6.6 5' 35 7500 6510 Car Col 240 11 11.2 -60 17 290.8 +0.2 3.9 25' 30 -- 5140 Car NGC 3590 11 13.0 -60 48 291.2 -0.2 8.2 3' 25 6200 5380 Car NGC 3680 11 25.7 -43 15 286.8 +16.9 7.6 12' 30 2610 3060 Cen NGC 3766 11 36.1 -61 37 294.1 -0.0 5.3 5' 100 5540 5690 Cen IC 2944 11 36.6 -63 02 294.6 -1.4 4.5 36' 30 6850 5850 Cen Stock 14 11 43.9 -62 30 295.2 -0.7 6.3 5' 10 8480 7000 Cen NGC 4103 12 06.7 -61 15 297.6 +1.2 7.4 6' 45 6070 5320 Cru NGC 4349 12 24.5 -61 54 299.8 +0.8 7.4 10' 30 5540 7100 Cru Mel 111 Coma star cluster 12 25.0 +26 00 222.3 +84.0 1.8 120' 80 280 310 Com NGC 4463 12 30.0 -64 48 300.7 -2.0 7.2 4' 30 -- 3420 Mus NGC 4609 12 42.3 -62 57 301.9 -0.1 6.9 4' 40 4930 3990 Cru NGC 4755 Jewel Box 12 53.6 -60 20 303.2 +2.5 4.2 10' 80 7630 6440 Cru NGC 5138 13 27.3 -59 01 307.5 +3.5 7.6 7' 40 5870 6480 Cen NGC 5281 13 46.6 -62 54 309.2 -0.7 5.9 7' 40 4240 3610 Cen NGC 5316 13 53.9 -61 52 310.2 +0.1 6.0 14' 80 3650 3960 Cen NGC 5460 14 07.6 -48 19 315.8 +12.6 5.6 36' 40 1630 2210 Cen NGC 5606 14 27.8 -59 37 314.8 +1.0 7.7 3' 15 5540 5890 Cen NGC 5617 14 29.8 -60 42 314.7 -0.1 6.3 10' 80 3910 5000 Cen NGC 5662 14 35.2 -56 33 316.9 +3.5 5.5 30' 70 -- 2170 Cen Col 285 Ursa Major clus. 14 41.0 +69 34 109.9 +44.7 0.4 1400' 10 65 80 UMa NGC 5822 15 05.2 -54 20 321.7 +3.6 6.5 36' 150 2480 2990 Lup NGC 5823 15 05.7 -55 35 321.2 +2.5 7.9 12' 100 4110 3890 Cir NGC 6025 16 03.7 -60 30 324.5 -6.0 5.1 14' 60 2740 2470 TrA NGC 6067 16 13.2 -54 13 329.8 -2.2 5.6 14' 100 6850 4620 Nor NGC 6087 16 18.9 -57 54 327.8 -5.4 5.4 14' 40 2940 2910 Nor NGC 6124 16 25.6 -40 40 340.8 +6.0 5.8 40' 100 1600 1670 Sco NGC 6134 16 27.7 -49 09 334.9 -0.2 7.2 6' 30 2580 2980 Nor NGC 6152 16 32.7 -52 36 332.9 -3.1 8.1 25' 70 3360 -- Nor NGC 6169 Mu Nor cluster 16 34.1 -44 02 339.4 +2.5 6.6 10' 40 3590 -- Nor NGC 6167 16 34.4 -49 35 335.3 -1.3 6.7 7' 40 3910 3610 Nor NGC 6178 16 35.7 -45 38 338.4 +1.2 7.2 5' 12 -- 3310 Sco NGC 6193 16 41.3 -48 46 336.7 -1.6 5.2 14' 20 4400 3770 Ara NGC 6200 16 44.2 -47 29 338.0 -1.1 7.4 12' 40 7830 6700 Ara NGC 6208 16 49.5 -53 49 339.7 -5.8 7.2 18' 60 3260 3060 Ara NGC 6231 16 54.0 -41 48 343.5 +1.2 2.6 14' 20 6520 4050 Sco NGC 6242 16 55.6 -39 29 345.5 +2.4 6.4 9' 40 3910 3690 Sco Tr 24 16 57.0 -40 40 344.7 +1.5 8.6 60' 200 5220 3710 Sco NGC 6250 16 58.0 -45 48 340.8 -1.8 5.9 10' 60 3330 2820 Ara NGC 6259 17 00.7 -44 39 342.0 -1.5 8.0 12' 120 2510 3360 Sco NGC 6281 17 04.8 -37 54 347.8 +2.0 5.4 8' 20 1960 1560 Sco NGC 6322 17 18.6 -42 57 345.3 -3.1 6.0 5' 30 3910 3250 Sco IC 4651 17 24.7 -49 56 340.1 -7.9 6.9 10' 80 2320 2900 Ara NGC 6383 17 34.8 -32 24 355.8 +0.1 5.5 20' 40 4500 3210 Sco NGC 6405 M6 17 40.1 -32 13 356.6 -0.7 4.2 20' 50 1960 1590 Sco NGC 6416 17 44.4 -32 21 357.0 -1.6 5.7 14' 40 2610 2420 Sco IC 4665 17 46.3 +05 43 30.6 +17.1 4.2 70' 30 1400 1150 Oph NGC 6425 17 46.9 -31 32 357.9 -1.6 7.2 10' 35 2610 2640 Sco NGC 6475 M7 17 53.9 -34 49 355.9 -4.5 3.3 80' 80 780 980 Sco NGC 6494 M23 17 56.8 -19 01 9.8 +2.9 5.5 30' 150 2150 2050 Sgr Col 359 18 01.1 +02 54 29.8 +12.5 3.0 240' 40 650 810 Oph NGC 6514 M20 18 02.3 -23 01 7.0 -0.2 5.2 28' ? 5220 2660 Sgr NGC 6520 18 03.7 -27 54 2.9 -2.8 7.6 6' 60 5380 5140 Sgr NGC 6531 M21 18 04.6 -22 30 7.7 -0.4 5.9 14' 70 4240 3930 Sgr NGC 6530 18 04.8 -24 20 6.1 -1.4 4.6 14' 30 5220 4340 Sgr NGC 6546 18 07.2 -23 19 7.3 -1.4 8.0 14' 150 2710 3060 Sgr Do-Dzim 9 18 08.9 +31 32 58.1 +22.3 6.0 30' 15 -- -- Her NGC 6595 18 17.0 -19 53 11.4 -1.7 7.0 15' 30 -- -- Sgr NGC 6604 18 18.1 -12 14 18.3 +1.7 6.5 5' 30 5350 5530 Ser NGC 6611 M16 18 18.8 -13 47 17.0 +0.8 6.0 6' 40 8150 5700 Ser NGC 6613 M18 18 19.9 -17 07 14.2 -1.0 6.9 5' 20 3910 4230 Sgr NGC 6618 M17 18 20.8 -16 11 15.1 -0.8 6.0 25' 40 4890 4240 Sgr NGC 6633 18 27.7 +06 34 36.1 +8.2 4.6 20' 30 1040 1230 Oph IC 4725 M25 18 31.6 -19 15 13.6 -4.5 4.6 30' 30 1830 2020 Sgr NGC 6664 18 36.7 -08 12 24.0 -0.5 7.8 15' 50 4470 3800 Sct IC 4756 18 39.0 +05 27 36.4 +5.2 4.6 40' 80 1300 1580 Ser NGC 6694 M26 18 45.2 -09 23 23.9 -2.9 8.0 7' 30 5060 5220 Sct NGC 6705 M11 Wild Duck 18 51.1 -06 16 27.3 -2.8 5.8 13' 100 5610 6120 Sct NGC 6709 18 51.5 +10 21 42.2 +4.7 6.7 14' 40 3100 3510 Aql Col 394 18 53.0 -20 21 14.8 -9.5 6.3 22' 40 -- 2250 Sgr Steph 1 Delta Lyr cluster 18 53.5 +36 55 66.9 +15.5 3.8 20' 15 -- 1270 Lyr NGC 6716 18 54.6 -19 52 15.4 -9.6 6.9 10' 20 1960 2570 Sgr NGC 6755 19 07.8 +04 14 38.6 -1.7 7.5 14' 100 4890 4630 Aql Stock 1 19 35.8 +25 13 60.3 +2.3 5.3 80' 40 -- 1040 Vul NGC 6811 19 38.2 +46 34 79.5 +11.9 6.8 14' 70 2940 3960 Cyg NGC 6819 19 41.3 +40 11 74.0 +8.5 7.3 5' 100 7180 7700 Cyg NGC 6823 19 43.1 +23 18 59.4 -0.1 7.1 6' 30 11300 6170 Vul NGC 6830 19 51.0 +23 04 60.1 -1.8 7.9 12' 20 4790 5350 Vul NGC 6834 19 52.2 +29 25 65.7 +1.2 7.8 5' 50 7500 6740 Cyg NGC 6866 20 03.7 +44 00 79.4 +6.8 7.6 10' 80 3910 4730 Cyg NGC 6871 20 05.9 +35 47 72.6 +2.1 5.2 30' 15 5380 5130 Cyg NGC 6885 20 12.0 +26 29 65.5 -4.1 5.7 10' 30 1920 1950 Vul IC 4996 20 16.5 +37 38 75.4 +1.3 7.3 5' 15 5280 5650 Cyg Mel 227 20 17.4 -79 02 314.8 -30.6 5.3 50' 40 -- 390 Oct Col 419 20 18.1 +40 43 78.1 +2.8 5.4 5' 15 -- -- Cyg NGC 6910 20 23.1 +40 47 78.7 +2.0 7.4 10' 50 5380 3710 Cyg NGC 6913 M29 20 23.9 +38 32 76.9 +0.6 6.6 10' 50 4080 3740 Cyg NGC 6939 20 31.5 +60 40 95.9 +12.3 7.8 10' 80 4080 3860 Cyg NGC 6940 20 34.6 +28 18 69.9 -7.2 6.3 25' 60 2610 2510 Vul NGC 7023 21 00.5 +68 10 104.0 +14.3 7.1 5' ? -- -- Cep NGC 7039 21 11.3 +45 40 88.0 -1.7 7.6 14' 50 2280 3100 Cyg NGC 7063 21 24.4 +36 30 83.1 -9.9 7.0 9' 12 2150 2250 Cyg NGC 7082 21 29.4 +47 05 91.2 -3.0 7.2 25' 15 4570 4700 Cyg NGC 7092 M39 21 32.2 +48 26 92.5 -2.3 4.6 30' 30 880 1060 Cyg IC 1396 21 39.1 +57 30 99.3 +3.7 3.5 90' 50 2610 2720 Cep IC 5146 21 53.4 +47 16 94.4 -5.5 7.2 9' 20 3260 2780 Cyg NGC 7160 21 53.7 +62 36 104.0 +6.4 6.1 5' 12 2940 2570 Cep NGC 7209 22 05.2 +46 30 95.5 -7.3 7.7 18' 25 2940 3810 Lac NGC 7235 22 12.6 +57 17 102.7 +0.8 7.7 5' 30 12390 9210 Cep NGC 7243 22 15.3 +49 53 98.9 -5.6 6.4 29' 40 2870 2640 Lac NGC 7380 22 47.0 +58 06 107.1 -0.9 7.2 20' 40 11700 7250 Cep NGC 7510 23 11.5 +60 34 111.0 +0.0 7.9 5' 60 10300 6770 Cep NGC 7654 M52 23 24.2 +61 35 112.8 +0.4 6.9 15' 100 4790 4630 Cas NGC 7686 23 30.2 +49 08 109.5 -11.6 5.6 14' 20 3260 -- And NGC 7789 23 57.0 +56 44 115.5 -5.4 6.7 25' 300 6200 7620 Cas NGC 7790 23 58.4 +61 13 116.6 -1.0 8.5 12' 40 12000 9600 Cas

Column 1: Standard catalogue name of the open cluster (Mel=Melotte, Col=Collinder, Tr=Trumpler, Fe=Feinstein). Column 2: Common name (or Messier number ) of the open cluster. Column 3: Right Ascension of the open cluster for epoch 2000. Column 4: Declination of the open cluster for epoch 2000. Column 5: Galactic longitude of the open cluster. Column 6: Galactic latitude of the open cluster. Column 7: Total visual magnitude of the open cluster. Column 8: The angular diameter of the cluster in arcminutes. Column 9: Number of stars in the cluster. This number is only an approximate indication of how rich the cluster is. Column 10: The distance to the open cluster in light years according to the two references listed below. Column 11: Constellation in which the cluster lies.

References: [1] Lyng� G, Catalogue of Open Cluster Data (5th Ed.) (1987). [2] Dias W, Alessi B, Moitinho A, L�pine J, (2002). New catalogue of optically visible open clusters and candidates. Astron and Astrophys, 389, 871.

Star birth in the Perseus Arm of the galaxy. The star cluster IC1805 consists of hot, young stars that formed in the nebula behind it.