Collinder catalogue explained

The Collinder catalogue is a catalogue of 471 open clusters compiled by Swedish astronomer Per Collinder. It was published in 1931 as an appendix to Collinder's paper On structural properties of open galactic clusters and their spatial distribution.^[1]

The catalogue contains 452 open clusters, 11 globular clusters, 6 asterisms, 1 stellar moving group, and 1 stellar association. Catalogue objects are denoted by Collinder, e.g. "Collinder 399". Dated prefixes include as Col + catalogue number, or Cr + catalogue number, e.g. "Cr 399".^[2]

Collinder objects

Collinder number	NGC/IC number	Other names	Image	Object type	Distance (kly) -->	Constellation	Apparent magnitude
Cr 1						9.8
Cr 2						6.5
Cr 3						9.4
Cr 4						11.3
Cr 5						9.1
Cr 6						8.1
Cr 7						7.0
Cr 8						7.4
Cr 9						12.0
Cr 10						9.3
Cr 11						8.8
Cr 12		Owl or E.T. Cluster				6.4
Cr 13						9.5
Cr 14						7.4
	-	Trumpler 1				8.1
Cr 16						11.0
Cr 17						8.2
Cr 18						6.5
Cr 19						7.9
Cr 20						7.1
Cr 21	-					7.3
Cr 22						7.9
Cr 23						5.7
Cr 24						5.3
Cr 25						6.1
Cr 26						7.9
Cr 27						8.9
Cr 28						7.6
	-	Trumpler 2				5.9
Cr 30						6.7
Cr 31						5.2
Cr 32		Westerhout 5				6.5
Cr 33		Westerhout 5				5.9
Cr 34		Westerhout 5				6.8
Cr 35						12.6
	-	Trumpler 3				7.0
Cr 37						11.8
Cr 38						8.4
	-	Alpha Persei Cluster				1.2
Cr 40						6.7
Cr 41						7.3
	-					1.2
Cr 43						6.6
Cr 44						9.6
Cr 45						6.9
Cr 46						8.4
Cr 47						6.4
Cr 48						11.7
Cr 49						6.2
	-					0.5
Cr 51						7.0
Cr 52						10.7
Cr 53						11.8
Cr 54						6.4
Cr 55						6.4
Cr 56						7.6
Cr 57						6.1
Cr 58						7.7
Cr 59						7.0
Cr 60						7.7
Cr 61						7.0
Cr 62	-					4.2
Cr 63						7.5
Cr 64						12.0
Cr 65	-					3.0
Cr 66						8.2
Cr 67						6.4
Cr 68						10.1
	-	Lambda Orionis Cluster				2.8
	-	Orion's Belt				0.6
Cr 71						6.0
Cr 72						2.5
Cr 73						4.2
Cr 74	-					14.4
Cr 75						5.6
Cr 76						9.1
Cr 77						6.7
Cr 78						10.2
Cr 79						9.4
		Trumpler 4				8.4
Cr 81						8.6
Cr 82						5.1
Cr 83		37 Cluster				5.9
Cr 84						6.8
Cr 85						8.7
Cr 86						10.9
Cr 87						8.5
Cr 88						8.6
Cr 89	-					5.7
Cr 90						8.4
Cr 91	-					6.4
Cr 92	-					8.6
Cr 93						4.2
Cr 94						8.5
Cr 95	-					-
Cr 96	-					7.3
Cr 97	-					5.4
Cr 98						9.4
Cr 99		Satellite Cluster				4.8
Cr 100						8.9
Cr 101						7.3
Cr 102						7.7
Cr 103						9.1
Cr 104	-					9.6
	-	Trumpler 5				10.9
Cr 106	-					4.6
Cr 107	-					5.1
Cr 108						10.8
Cr 109						11.3
Cr 110	-					10.5
Cr 111	-					7.0
Cr 112		Christmas Tree Cluster				4.1
Cr 113						9.5
Cr 114						10.0
Cr 115	-					9.2
Cr 116						5.4
Cr 117						7.5
Cr 118						4.5
Cr 119						6.0
Cr 120						10.0
Cr 121	-					2.6
Cr 122						10.5
Cr 123						9.6
Cr 124						5.9
Cr 125						8.4
Cr 126						8.5
Cr 127						7.2
Cr 128						6.7
Cr 129						7.7
Cr 130						7.1
Cr 131						6.5
Cr 132	-					3.6
Cr 133						9.7
Cr 134		Caroline's Cluster				7.2
	-	Pi Puppis Cluster				2.1
Cr 136		Tau Canis Majoris Cluster				3.8
Cr 137						7.9
Cr 138						11.8
Cr 139						8.0
	-					3.5
Cr 141						8.4
Cr 142						7.4
Cr 143						7.4
Cr 144						8.0
	-	Trumpler 6				10.0
	-	Trumpler 7				7.9
Cr 147	-	Melotte 66				7.8
Cr 148						7.4
Cr 149						12.6
Cr 150						7.9
Cr 151						8.3
Cr 152						4.4
Cr 153						6.7
Cr 154						8.3
Cr 155	-	Melotte 71				7.1
Cr 156	-	Melotte 72				10.1
Cr 157						10.2
Cr 158						6.9
Cr 159						6.1
Cr 160						6.2
Cr 161						2.8
Cr 162						8.3
Cr 163						10.2
Cr 164						7.1
Cr 165						5.8
Cr 166						7.3
		Trumpler 8				9.6
	-	Trumpler 9				8.7
Cr 169						7.9
Cr 170						7.6
Cr 171						9.3
Cr 172		Southern Beehive Cluster				3.8
Cr 173	-					0.6
Cr 174						6.5
Cr 175						7.6
Cr 176						6.5
Cr 177						4.7
Cr 178						6.3
Cr 179						5.8
Cr 180						7.4
Cr 181						7.0
Cr 182						7.5
Cr 183						9.7
Cr 184						9.2
	-					7.8
Cr 186						11.8
Cr 187	-					9.6
Cr 188						8.4
Cr 189		Beehive Cluster, Praesepe				3.1
Cr 190						11.2
Cr 191		Omicron Velorum Cluster				2.0
Cr 192						4.0
Cr 193						8.8
Cr 194						8.6
Cr 195						9.2
	-					10.5
	-					6.7
	-					11.2
Cr 199						6.1
Cr 200						7.8
Cr 201						11.6
Cr 202		Harvard 3				6.1
	-	Trumpler 10				5.0
Cr 204						6.9
	-	Markarian 18				7.8
Cr 206						8.2
Cr 207						12.5
Cr 208						7.4
Cr 209						7.2
Cr 210						8.3
Cr 211						9.9
Cr 212						8.8
Cr 213	-					9.2
Cr 214						9.7
Cr 215						4.2
	-	Trumpler 11				8.1
	-	Trumpler 12				8.8
Cr 218						6.0
	-	Trumpler 13				11.3
Cr 220	-					7.6
Cr 221						11.0
Cr 222						4.0
Cr 223	-					9.4
Cr 224						4.7
Cr 225						6.7
Cr 226						7.4
Cr 227	-	Melotte 101				8.0
Cr 228	-					4.4
Cr 229		Theta Carinae Cluster, Southern Pleiades				1.0
	-	Trumpler 14				5.5
	-	Trumpler 15				7.0
Cr 232	-					6.8
	-	Trumpler 16				5.0
	-					5.0
	-	Trumpler 17				8.4
Cr 236	-					7.7
Cr 237						8.2
Cr 238		Wishing Well Cluster				3.0
Cr 239						6.6
	-					3.9 ^[3]
	-	Trumpler 18				6.9
Cr 242						8.2
	-	Trumpler 19				9.6
Cr 244						9.1
Cr 245						8.0
Cr 246	-	Melotte 105				8.5
Cr 247						7.6
Cr 248		Pearl Cluster				5.3
Cr 249	-					4.0
Cr 250						8.3
Cr 251						8.8
Cr 252						7.4
Cr 253						9.4
Cr 254						8.9
Cr 255						7.4
	-	Coma Star Cluster				1.8
Cr 257	-					-
Cr 258	-					7.1
Cr 259						8.4
Cr 260						7.2
Cr 261	-					10.7
	-	Trumpler 20				10.1
Cr 263						6.9
Cr 264		Jewel Box				4.2
Cr 265						8.6
Cr 266						8.9
Cr 267						9.0
Cr 268	-					9.5
Cr 269	-					9.2
Cr 270						7.6
Cr 271	-					8.7
Cr 272	-					7.7
Cr 273						9.1
	-	Trumpler 21				7.7
Cr 275	-					10.2
Cr 276						5.9
Cr 277	-					9.2
Cr 278						11.8
Cr 279						6.0
Cr 280						5.6
Cr 281						7.7
Cr 282						6.3
	-	Trumpler 22				7.9
Cr 284						5.5
	-	Ursa Major Moving Group				4.4
Cr 286						9.8
Cr 287						8.8
Cr 288						12.6
Cr 289						6.5
Cr 290						7.9
Cr 291						8.4
Cr 292	-					7.9
Cr 293						9.0
Cr 294						10.7
	-	Trumpler 23				11.2
Cr 296						5.1
Cr 297						8.5
Cr 298						5.6
Cr 299	-	Harvard 10				6.9
Cr 300		S Normae Cluster				5.4
Cr 301						5.8
	-	Upper Scorpius association				1.0
Cr 303						7.2
Cr 304						8.1
Cr 305						6.7
Cr 306						6.6
Cr 307	-					9.2
Cr 308						7.2
Cr 309						8.5
Cr 310						5.2
Cr 311						7.4
Cr 312						8.2
Cr 313						7.2
Cr 314						10.1
Cr 315						2.6
Cr 316	-					6.6
Cr 317						6.4
	-	Trumpler 24				8.6
Cr 319						8.2
Cr 320						5.9
Cr 321						10.2
Cr 322						8.0
Cr 323						9.5
Cr 324						5.4
Cr 325						11.8
Cr 326						6.0
Cr 327						6.9
Cr 328						7.8
	-	Trumpler 25				11.7
Cr 330						8.6
	-	Trumpler 26				9.5
Cr 332	-					8.9
Cr 333	-					9.8
Cr 334						5.5
Cr 335						5.5
	-	Trumpler 27				6.7
	-	Trumpler 28				7.7
Cr 338	-					8.0
Cr 339						8.5
Cr 340						10.6
Cr 341		Butterfly Cluster				4.2
Cr 342						8.8
	-	Trumpler 29				7.5
Cr 344						5.7
Cr 345	-					10.9
Cr 346						10.9
Cr 347	-					8.8
Cr 348						7.2
Cr 349						4.2
Cr 350	-					6.1
Cr 351	-					9.3
Cr 352						8.2
Cr 353						8.2
Cr 354		Ptolemy Cluster				3.3
	-	Trumpler 30				8.8
Cr 356						5.5
	-	Trumpler 31				9.8
Cr 358						9.6
Cr 359	-					3.0
Cr 360		Trifid Nebula				6.3
Cr 361						7.6
Cr 362						4.6
Cr 363						5.9
Cr 364						9.3 ^[4]
Cr 365						8.0
Cr 366						7.5
Cr 367	-					6.4
Cr 368						8.6
Cr 369						8.6
Cr 370						10.0
Cr 371						7.0
	-	Trumpler 32				12.2
Cr 373						6.5
Cr 374						11.1
Cr 375		Eagle Nebula				6.0
Cr 376						6.9
Cr 377						6.0
	-	Trumpler 33				7.8
Cr 379						11.7
Cr 380						4.6
Cr 381						8.9
Cr 382						4.6
Cr 383						8.5
Cr 384						8.9
Cr 385						7.8
Cr 386						4.6
	-	Trumpler 34				8.6
	-	Trumpler 35				9.2
Cr 389						8.0
Cr 390						9.2
Cr 391		Wild Duck Cluster				5.8
Cr 392						6.7
Cr 393						7.5
Cr 394	-					6.3
Cr 395						8.4
Cr 396						8.3
Cr 397						7.5
Cr 398						10.6
	-	Al Sufi's Cluster, Brocchi's Cluster, Coathanger				3.6
Cr 400						8.8
Cr 401	-					7.0
Cr 402						6.8
Cr 403						7.3
Cr 404						14.9
Cr 405						7.1
Cr 406						7.9
Cr 407						7.8
Cr 408	-	Harvard 20				7.7
Cr 409						8.4
Cr 410						14.2
Cr 411	-	Melotte 227				5.3
Cr 412						7.6
Cr 413						5.2
Cr 414						13.1
Cr 415						8.0
Cr 416						8.1
Cr 417						8.1
Cr 418						7.3
Cr 419	-					7.6
Cr 420						7.4
Cr 421	-					10.1
Cr 422						6.6
Cr 423						7.8
Cr 424						6.3
Cr 425						10.0
Cr 426						8.9
Cr 427	-					13.8
Cr 428	-					8.7
Cr 429						7.4
Cr 430						9.1
Cr 431						7.6
Cr 432						8.8
Cr 433						12.0
Cr 434						8.3
Cr 435						7.0
Cr 436						9.7
Cr 437						8.4
Cr 438						4.6
Cr 439		Elephant's Trunk Nebula				3.5
Cr 440						9.7
Cr 441						11.5
Cr 442						9.3
Cr 443						6.1
Cr 444						7.7
Cr 445						9.0
Cr 446						9.6
Cr 447						7.7
Cr 448						6.4
Cr 449						9.2
Cr 450						8.4
Cr 451						9.7
Cr 452						7.2
Cr 453						13.0
Cr 454						7.9
Cr 455						6.9
Cr 456						5.6
Cr 457						10.0
Cr 458	-	Harvard 21				9.0
Cr 459						9.4
Cr 460		Caroline's Rose Cluster				6.7
Cr 461						8.5
Cr 462						8.8
	-					5.7 ^[5]
Cr 464	-					4.2
Cr 465	-					10.1
Cr 466	-					11.1
Cr 467	-					10.1
Cr 468	-					11.0
Cr 469	-					9.1
Cr 470						7.2
Cr 471	-					-

Notes

Errors

There are some errors in Collinder's list or references to it. For example:^{[6] [7]}

• Cr 21, 27, 57, 396, 399, and 426 are asterisms.
• Cr 32, 33, and 34 all refer to parts of the much larger IC 1848.
• There is some doubt as to whether or not Cr 84, 182, 221, 254, 265, 269, 283, 294, 336, 387, 404, 425, 456, and 458 are open clusters.
• The positions of Cr 109 and 185 are inaccurate.
• Cr 202 is actually the central condensation of the much larger Cr 199.
• Cr 220 was believed by Collinder to be NGC 3247 when in reality he had discovered a new open cluster.
• Cr 234 was applied to the southern section of the much larger Cr 233.
• Cr 240 is actually the central condensation of the much larger Cr 239.
• Cr 267, 328, 330, 346, 364, 366, 368, 381, 395, 409, and 414 are globular clusters.
• Cr 334 and 335 are duplicate listings of the same object.
• The original alias given for Cr 339 is the galaxy NGC 6393. The correct alias for Cr 339 is the open cluster NGC 6396.
• The original alias given for Cr 371 is of the nebula which surrounds an open cluster he discovered. He apparently did not know he was first to make the distinction.
• Cr 374 is embedded within the much larger Messier 24.
• Collinder erroneously believed that Messier 11 was a globular cluster.
• Collinder’s description of Messier 73 is actually for Messier 72, a globular cluster, and not the object he intended for, Cr. 426.

See also

• List of astronomical catalogues
• Melotte catalogue - a similar catalogue of star clusters published by Philibert Jacques Melotte in 1915.
• Trumpler catalogue - a similar catalogue of open star clusters published by Robert Julius Trumpler in 1930, one year before Per Collinder.

External links

• An annotated version of the Collinder catalogue by Thomas Watson

Notes and References

1. Collinder. Per. 1931. On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters. Annals of the Observatory of Lund. 2. B1-B46. 1931AnLun...2....1C.
2. Web site: Dictionary of Nomenclature of Celestial Objects . 1 December 2014 . Simbad . Centre de Données astronomiques de Strasbourg . 18 December 2014 . Avoid the usage of Cr, prefer Collinder .
3. Web site: Cl Collinder 240. 2020-06-10. sim-id.
4. Web site: NGC 6540. 15 January 2016.
5. Web site: Cl Collinder 463. 2020-06-10. sim-id.
6. Archinal, B. A., and S. J. Hynes. 2003. Star Clusters, Richmond, VA: Willmann-Bell
7. Web site: The Collinder Catalog (updated) - Articles. Cloudy Nights. en. 2020-05-29.