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THE COLLINDER CATALOG OF OPEN STAR CLUSTERS An Observer's Checklist Edited by Thomas Watson The Updated and Observer Friendly Rendition of Collinder's Catalog of Open Star Clusters In 2004 a puzzle presented by a star chart notation sent me off on what, for many months, seemed like the proverbial wild goose chase. Persistence and a good deal of luck, however, eventually led me to the solution to the puzzle, and to the creation of this observer's checklist. Like many of you, I have a fondness for the Coat Hanger, a curious and well-named asterism. I first became aware of its existence while using a copy of Dickinson's Nightwatch as I reacquainted myself with the night sky. Not long afterward I picked up a copy of the 19th edition of the Norton's Star Atlas and Reference Handbook and found, where the Coat Hanger should be, the designation "Cr 399." What, I wondered, did the letters "Cr"stand for? In this age of instant access to all manner of information, I soon learned that the notation referred to a catalog of open star clusters created by a Swedish astronomy graduate student -� Per Arne Collinder -� for his 1931 doctoral dissertation. ("On Structural Properties of Open Clusters and Their Spatial Distribution.-�) Web searches and conventional digging around in the library brought limited results. I came across a reference to the fact that Collinder had gone on to become, not an astronomer, but something of an authority on navigation. I also found that many studies of stars and star clusters (to this day) cite Collinder's dissertation as a reference. He may have become a mystery to amateur astronomers, but his work was obviously of use to someone. Nothing else about this admittedly minor character in the history of astronomy was forthcoming. No copies of Collinder's dissertation existed in the local university library, so I was unable to see the catalog, much less read the man's findings with regards to this class of deep sky objects. I'd come to a dead end, my curiosity far from satisfied. I really hate when that happens. Astronomy writer Nancy Thomas, in the winter 2005 issue of Amateur Astronomy magazine, published an essay on Collinder that rekindled my interest in his catalog. Like me, she had been sent on her quest, years ago, by the "Cr 399"notation for the Coat Hanger. However, she had done substantially better in her efforts to learn about Collinder, coming up with a photocopy of his catalog (reproduced by the US Naval Observatory directly from his dissertation) and an obituary that, when translated, provided a nutshell account of the man's life. (See "Per Collinder and His Catalog,"by Nancy Thomas; Amateur Astronomy #48, Winter 2005.) At the end of her essay, Ms. Thomas expressed the hope that amateur astronomers would take up the challenge of using Collinder's catalog as an observing list. This seemed a vain hope, without a copy of the catalog. I wrote Nancy a letter to congratulate her on her findings, express appreciation for publishing her results, and to say that I would be interested in taking up the challenge if I could trouble her for a copy of the catalog. This, she was most happy to do, and in a couple of weeks a photocopy of it arrived in my mailbox. To say I was pleased by this turn of events would be an understatement. I studied the catalog and soon came to the realization that, in its original form, the catalog was of little use to the amateur observer. It contained out-dated coordinates, incorrect NGC and IC numbers (often through no fault of the author), and data that was just plain obscure from the perspective of the average backyard observer. The idea occurred to convert this document into a more streamlined form that might appeal to those who have an interest in both astronomy and history, and so I set to work updating the catalog in a spreadsheet. This turned into a larger task than I expected, especially when I set about finding correct NGC numbers for the objects. To accomplish this, and to provide modern coordinate information, I came to rely heavily on the Historically Corrected New General Catalogue Ver. 1.02 (available on line) and the book Star Clusters by Brent A. Archinal and Steven J. Hynes (Willmann-Bell). No observer of deep sky objects should remain unacquainted with these references. As I was working my way through the process of making the conversion, a chance came my way, in the summer of 2006, to see Collinder's dissertation in its entirety. A spur of the moment search with Google Scholar, followed up by a call to the folks at the University of Arizona interlibrary loan program, put a copy of the seventy-five year old tome in my hands for a few weeks. It was an interesting read, written as it was in a more personable and human style than we see used in professional science journals and dissertations these days. Of greatest interest was the collection of notes that followed the catalog, in which Collinder discusses the individual objects he decided to include in his research. Holding that old dissertation in my hands, after trying for so long to find out anything at all about its author, was a very satisfying experience. The search had come full circle. Although the majority of the open clusters used by Collinder for his research were objects discovered by other observers over the ages, a significant number of these objects were recognized for what they are for the first time by Collinder, himself. It is for this reason, of course, that the "Cr"designation that sent me on my quest remains on star charts today. The catalog as a whole is a catalog in its own right in that it is a compilation of data on a specific class of objects (open clusters) assembled to facilitate a study of the characteristics of those objects. But whatever use Collinder -� and those who came after him -� made of this catalog, we now have the option, thanks in large part to the detective work of Nancy Thomas, of using this large collection of objects as resource for our enjoyment of the night sky. I hope this version of it does indeed prove to be user friendly enough to guide you to many worthwhile encounters with the open star clusters of the Milky Way galaxy. Using the Updated Collinder Catalog As you observe these objects through the eyepiece it might be interesting to keep in mind that Collinder apparently never saw the majority of the clusters he listed directly with his own eyes. Much, if not most, of his work was done using photographic plates taken from a variety of observatories. Because he used this approach, and his selection process was not biased toward the Northern Hemisphere, a significant number of the clusters in his catalog are objects out of reach of northern observers. That seems fair enough, when you consider that a comparable number are invisible to observers in the south. The checklist has been left in the original order according to each object's Cr number, just as Collinder published it, with no attempt made to sort according to the prospective observer's latitude. Most of the clusters in the Collinder Catalog are objects suited to telescopes of various sizes. Some require high magnification, others a low power wide field eyepiece. Some are best viewed with binoculars, or even with the naked eye. If nothing else, Collinder's catalog clearly illustrates that open star clusters represent a highly diverse set of deep sky objects. The following is an explanation of the column headings of the checklist derived from Collinder's catalog. Cr # The catalog number assigned by Collinder to each object included in his study. NGC/Other Cat Provides connections to the more general resources from which Collinder derived his list of open clusters. Not all of these designations were included in Collinder's original catalog. They are added here to allow for easier cross referencing with modern resources. In a few cases Collinder got an NGC/IC number wrong, and where the erroneous number might be found in other references, this has been noted. Also, some of his designations, while correct in their time, are seldom used these days. A few of these, such as that for the Coat Hanger asterism (4-5 Vul)) have been retained as curiosities. Con The constellation in which the object is found. RA and DEC The celestial coordinates of the objects according to the Historically Corrected New General Catalogue (HCNGC) v1.02. The coordinates listed in Collinder's dissertation are from the early 1900s and are not reproduced in this checklist. (See original catalog.) M (v/p) Estimates of the apparent magnitudes of these clusters, either visual (v) or photographic (p) taken from such sources as NSOG, the SEDS website, and Archinal & Hynes, and The Historically Corrected New General Catalogue (HCNGC) v.1.02. The magnitudes recorded by Collinder often do not agree with modern sources. (See original catalog.) # Stars Estimates of the number of stars contained within star clusters, determined by the examination of photographic plates. Most of these counts are by Collinder. Where he did not provide a number one was substituted from other (usually more recent) sources, as indicated by a number in parenthesis. This segregation was done in order to help maintain some sense of what Collinder measured in his work, while still providing useful information to modern observers. Although these numbers can be useful for giving the observer some sense for the cluster's nature, always bear in mind that the number of stars seen will be strongly influenced by aperture and conditions. AnS' Modern estimates of angular size taken from sources such as The Historically Corrected New General Catalogue (HCNGC) v.1.02 and The Night Sky Observer's Guide (NSOG) by Kepple and Sanner. Class A classification system used to describe clusters by comparing them to typical and well known clusters as examples. Classifications of this sort from both Collinder and Lundmark (his doctoral advisor) are included in the original catalog, but only Collinder's assessment (which in the overwhelming majority of cases is the same as Lundmark's) are used for this list. This system of descriptive classification is included partly for the historical insight it provides into how these objects were seen by the researcher involved, but because they would seem to offer an aid to the identification of objects when they are found. Notes ( n) Useful information that it is hoped provides some clarification of discrepancies between Collinder's sources and those currently in use. Catalog and Checklist Col # NGC/Other Cat. Con RA DEC m ( v/p) # Stars AnS' Class n 1 103 Cas 00h 25m 17.4s +61� 19' 19" 9.8v (30) 5 Plei 2 129 Cas 00h 29m 54.1s +60� 12' 35" 6.5v 20 21 Plei 3 133 Cas 00h 31m 16.9s +63� 21' 10" 9.4v 20 7 Plei 4 136 Cas 00h 31m 30.7s +61� 30' 34" 11.3p (20) 1.2 Praes 5 146 Cas 00h 33m 03.9s +63� 18' 33" 9.1v 20 6 Plei 6 188 Cep 00h 47m 29.7s +85� 14' 29" 8.1v (120) 13 Praes 7 225 Cas 00h 43m 32.3s +61� 47' 25" 7.0v 18 12 Plei 8 IC1590 Cas 00h 52m 59.3s +56� 37' 19" 7.4p nl 25x30 Neb 1 9 366 Cas 01h 06m 25.9s +62� 13' 44" 12p (30) 3 Plei 10 381 Cas 01h 08m 14.9s +61� 35' 00" 9.3v 38 6 Praes 11 436 Cas 01h 15m 57.7s +58� 49' 02" 8.8v 25 5 Praes 12 457 Cas 01h 19m 32.6s +58� 17' 27" 6.4v 40 13 Praes 13 559 Cas 01h 29m 29.1s +63� 18' 30" 9.5v 35 4.4 Praes 14 581 (M103) Cas 01h 33m 21.8s +60� 39' 29" 7.4v 25 6 Praes 15 Tr.1 Cas 01h 35m 42.0s +61� 17' 00" 8.1v (20) 7.4 Praes 16 609 Cas 01h 36m 23.7s +64� 32' 12" 11.0v (100+) 3 Praes 17 637 Cas 01h 43m 03.1s +64� 02' 12" 8.2v 11 3.5 Plei 18 654 Cas 01h 43m 59.4s +61� 52' 58" 6.5v 30 5 Praes 19 659 Cas 01h 44m 23.0s +60� 40' 09" 7.9v 15 5 Praes 20 663 Cas 01h 46m 16.0s +61� 13' 06" 7.1v 60 16 Praes 21 Tri 01h 50m 12.0s +27� 05' 00" 7.3v 15 7 Plei 2 22 744 Per 01h 58m 29.9s +55� 28' 29" 7.9v 12 11 Plei 23 752 And 01h 57m 47.9s +37� 51' 00" 5.7v 50 50 Plei 24 869 Per 02h 19m 03.8s +57� 08' 06" 5.3v 250 29 Praes 3 25 884 Per 02h 22m 32.1s +57� 08' 39" 6.1v 200 29 Praes 3 26 Mel 15 (IC1805) Cas 02h 32m 42.0s +61� 27' 00" 7.9v 25 22 Plei 4 27 956 And 02h 32m 30.9s +44� 35' 37" 8.9p 20 7 Plei 28 957 Per 02h 33m 19.0s +57� 34' 11" 7.6v 18 11 Plei 29 Tr.2 Per 02h 37m 18.0s +55� 59' 00" 5.9v 18 20 Plei 30 1027 Cas 02h 42m 35.1s +61� 35' 40" 6.7v 40 20 Neb 31 1039 (M34) Per 02h 42m 07.4s +42� 44' 46" 5.2v 60 35 Praes 32 IC1848 Cas 02h 51m 12.0s +60� 26' 00" 6.5v 20 12 Plei 5 33 IC1848 Cas 02h 59m 18.0s +60� 24' 00" 5.9p 100 39 Plei 5 34 IC1848 Cas 03h 00m 54.0s +60� 25' 00" 6.8p 60 25 Plei 5 35 1193 Per 03h 05m 55.7s +44� 22' 59" 12.6v (40) 1.5 Plei 36 Tr.3 Cas 03h 11m 48.0s +63� 15' 00" 7p 30 23 Plei 37 1220 Per 03h 11m 40.7s +53� 20' 54" 11.8v (15) 2 Plei 38 1245 Per 03h 14m 41.5s +47� 14' 20" 8.4v 65 10 Praes 39 Mel 20 (PMC) Per 03h 22m 00.0s +49� 00' 00" 1.2v 60 185 Plei 6 40 1342 Per 03h 31m 40.1s +37� 22' 28" 6.7v 30 14 Plei 41 IC348 Per 03h 44m 30.0s +32� 17' 00" 7.3v 10 7 Neb 7 42 M45 Tau 03h 47m 00.0s +24� 07' 00" 1.2v 100 110 Neb 43 1444 Per 03h 49m 22.9s +52� 39' 44" 6.6v 7 4 μNorm 44 1496 Per 04h 04m 31.9s +52� 39' 41" 9.6v (10) 6 Plei 45 1502 Cam 04h 07m 49.3s +62� 19' 54" 6.9v 15 7 μNorm 46 1513 Per 04h 09m 54.7s +49� 31' 02" 8.4v 40 9 Praes 47 1528 Per 04h 15m 18.9s +51� 12' 41" 6.4v 50 23 Praes 48 IC361 Cam 04h 19m 00.0s +58� 18' 00" 11.7v (60) 6 Praes 49 1545 Per 04h 20m 56.3s +50� 15' 19" 6.2v 18 18 Plei 50 Mel 25 (TMC) Tau 04h 27m 00.0s +16� 00' 00" 0.5v 36 330 Plei 8 51 1582 Per 04h 32m 00.0s +43� 50' 53" 7.0v 60 37 Plei 52 1605 Per 04h 34m 54.3s +45� 16' 11" 10.7v (40+) 5 Praes 53 1624 Per 04h 40m 36.5s +50� 27' 42" 11.8v (12) 5x5 Plei 54 1647 Tau 04h 45m 55.6s +19� 06' 42" 6.4v 60 45 Praes 55 1662 Ori 04h 48m 28.9s +10� 55' 49" 6.4v 14 20 Plei 56 1664 Aur 04h 51m 08.4s +43� 40' 28" 7.6v 30 18 Praes 57 1746 Tau 05h 03m 50.2s +23� 46' 04" 6.1v 70 42 Praes 58 1778 Aur 05h 08m 05.7s +37� 01' 22" 7.7v 15 6 Plei 59 1807 Tau 05h 10m 41.1s +16� 31' 52" 7.0v 18 17 Plei 60 1817 Tau 05h 12m 26.3s +16� 41' 03" 7.7v 85 16 Praes 61 1857 Aur 05h 20m 05.5s +39� 20' 37" 7.0v 40 5 Plei 62 nl Aur 05h 22m 30.0s +41� 00' 00" 4.2v 15 28 Plei 63 1893 Aur 05h 22m 45.1s +33� 25' 13" 7.5v 30 11 Plei 9 64 1883 Aur 05h 25m 54.2s +46� 29' 25" 12.0v 12 2.5 Plei 65 nl Tau 05h 25m 05.0s +15� 41' 59" 3.0v 30 220 Plei 66 1907 Aur 05h 28m 04.5s +35� 19' 32" 8.2v 8 6 Praes 67 1912 (M38) Aur 05h 28m 42.5s +35� 51' 18" 6.4v 120 21 Praes 68 1931 Aur 05h 31m 25.8s +34� 14' 42" 10.1v (20) 4x4 Neb 69 Orion Cluster Ori 05h 35m 28.8s +09� 56' 28" 2.8v 25 70 Neb 10 70 Orion Belt Ori 05h 35m 36.0s -01� 05' 00" 0.6v 125 140 Neb 11 71 1960 (M36) Aur 05h 36m 17.7s +34� 08' 27 6.0v 60 12 Praes 72 1980 Ori 05h 35m 25.9s -05� 54' 35" 2.5v 12 14x14 Neb 73 1981 Ori 05h 35m 09.6s -04� 25' 30" 4.2v 13 25 Plei 74 Ori 05h 48m 30.0s +07� 24' 00" 14.4p 12� 5 nl 75 2099 (M37) Aur 05h 52m 18.3s +32� 33' 11" 5.6v 250 23 Praes 76 2112 Ori 05h 53m 45.2s +00� 24' 39" 9.1v 45 11 Praes 77 2129 Gem 06h 01m 06.5s +23� 19' 20" 6.7v 20 6 Plei 78 2126 Aur 06h 02m 33.0s +49� 51' 57" 10.2v 18 6 Plei 79 2141 Ori 06h 02m 55.1s +10� 26' 47" 9.4v (100) 10 Praes 80 Tr.4 Gem 06h 05m 00.0s +24� 00' 00" 8.4p 15 6 Plei 81 2158 Gem 06h 07m 25.6s +24� 05' 46" 8.6v (100+) 5 Praes 12 82 2168 (M35) Gem 06h 08m 55.9s +24� 21' 28" 5.1v 175 28 Praes 83 2169 Ori 06h 08m 24.3s +13� 57' 53" 5.9v 8 6 Plei 84 2175 Ori 06h 09m 39.6s +20� 29' 15" 6.8v 16 40x30 μ Norm 13 85 2186 Ori 06h 12m 07.1s +05� 27' 31" 8.7v 10 4 Praes 86 2192 Aur 06h 15m 17.4s +39� 51' 19" 10.9v (45) 5 Plei 87 2194 Ori 06h 13m 45.9s +12� 48' 24" 8.5v 35 10 Praes 88 2204 Cma 06h 15m 32.2s -18� 39' 57" 8.6v 65 12 Praes 89 9-12 Gem Gem 06h 18m 00.0s +23� 38' 00" 5.7 20 60 Plei 90 2215 Mon 06h 20m 49.2s -07� 17' 02" 8.4v 22 11 Plei 91 Mon 06h 21m 42.0s +02� 22' 00" 6.4p 20 17 Plei 92 Mon 06h 22m 54.0s +05� 07' 00" 8.6v 30 11 Neb 93 2232 Mon 06h 27m 15.0s -04� 50' 51" 4.2v 18 29 Plei 94 2236 Mon 06h 29m 39.7s +06� 49' 50" 8.5v 18 6 Plei 95 Mon 06h 30m 30.0s +09� 56' 00" nl 10 27 Neb 96 Mon 06h 30m 18.0s +02� 52' 00" 7.3v 12 7 Plei 97 Mon 06h 31m 18.0s +05� 55' 00" 5.4p 9 21 Plei 98 2243 Cma 06h 29m 34.5s -31� 16' 53" 9.4v (100) 5 Praes 99 2244 Mon 06h 31m 55.6s +04� 56' 35" 4.8v 18 24 Plei 100 2250 Mon 06h 33m 49.9s -05� 05' 04" 8.9p (10) 7 Plei 101 2251 Mon 06h 34m 38.5s +08� 21' 59" 7.3v 20 10 Plei 102 2252 Mon 06h 34m 42.9s +05� 21' 59" 7.7v 10� 20 Plei 103 2254 Mon 06h 35m 49.7s +07� 40' 24" 9.1v 20 4 Plei 104 Mon 06h 36m 30.0s +04� 49' 00" 9.6p 15 21 Chain 105 Tr.5 Mon 06h 37m 36.0s +09� 26' 00" 10.9p 20 8 Plei 106 Mon 06h 37m 06.0s +05� 57' 00" 4.6p 23 45 Plei 107 Mon 06h 37m 42.0s +04� 44' 00" 5.1p 30 35 Plei 108 2259 Mon 06h 38m 21.4s +10� 53' 01" 10.8v (25) 4.5 Plei 109 2262 Mon 06h 39m 38.1s +01� 08' 37" 11.3v (35) 3.5 Plei 14 110 Mon 06h 38m 24.0s +02� 01' 00" 10.5p 60 12 Praes 111 Mon 06h 38m 42.0s +06� 54' 00" 7.0p 8 3.2 μNorm 112 2264 Mon 06h 40m 58.3s +09� 53' 44" 4.1v 45 20 μ Norm 113 2266 Gem 06h 43m 19.2s +26� 58' 10" 9.5v 50� 6 Praes 114 2269 Mon 06h 43m 17.1s +04� 37' 28" 10.0v 6� 4 Plei 115 Mon 06h 46m 30.0s +01� 46' 00" 9.2p 25 7 Plei 116 2281 Aur 06h 48m 17.8s +41� 04' 44" 5.4v 23 14 Plei 117 2286 Mon 06h 47m 40.1s -03� 08' 52" 7.5v 50 14 Plei 118 2287 (M41) Cma 06h 46m 00.0s -20� 46' 00" 4.5v 160 38 Praes 119 2301 Mon 06h 51m 45.3s +00� 27' 33" 6.0v 60 12 Plei 120 2304 Gem 06h 55m 11.9s +17� 59' 19" 10.0v 30� 5 Praes 121 Cma 06h 54m 12.0s -24� 38' 00" 2.6v 20 50 Plei 122 2309 Mon 06h 56m 03.6s -07� 10' 28" 10.5v 14� 3 Plei 123 2311 Mon 06h 57m 47.5s -04� 36' 41" 9.6v 20 6 Plei 124 2323 (M50) Mon 07h 02m 42.3s -08� 23' 26" 5.9v 45 16 Plei 125 2324 Mon 07h 04m 07.9s +01� 02' 41" 8.4v 50 7 Praes 126 2331 Gem 07h 06m 59.8s +27� 15' 42" 8.5v 20 18 Plei 127 2335 Mon 07h 06m 49.5s -10� 01' 43" 7.2v 40 12 Plei 128 2343 Mon 07h 08m 06.8s -10� 37' 01" 6.7v 12 6 Plei 129 2345 Cma 07h 08m 18.8s -13� 11' 38" 7.7v 45 12 Praes 130 2353 Mon 07h 14m 30.3s -10� 15' 57" 7.1v 60 20 μNorm 131 2354 Cma 07h 14m 15.3s -25� 41' 33" 6.5v 30 20 Praes 132 Cma 07h 14m 24.0s -31� 10' 00" 3.6v 18 95 Plei 133 2355 Gem 07h 16m 59.3s +13� 44' 59" 9.7v 30 9 Praes 134 2360 Cma 07h 17m 43.1s -15� 38' 29" 7.2v 50 12 Praes 135 Pup 07h 17m 18.0s -36� 50' 00" 2.1v 16 50 Neb? 136 2362 Cma 07h 18m 41.5s -24� 57' 15" 3.8v 20 8 μNorm 137 2367 Cma 07h 20m 04.5s -21� 53' 03" 7.9v (30) 3.5 Plei 138 2368 Mon 07h 21m 06.3s -10� 22' 18" 11.8v (15) 5 Praes 139 2374 Cma 07h 23m 56.1s -13� 15' 48" 8.0v 40 19 Plei 140 Cma 07h 23m 54.0s -32� 12' 00" 3.5v 15 42 Plei 141 2383 Cma 07h 24m 39.9s -20� 56' 51" 8.4v 25� 5 Praes 142 2384a Cma 07h 25m 11.8s -21� 01' 24" 7.4v (15) 2.5 μNorm 143 2384b Cma 07h 25m 11.8s -21� 01' 24" nl nl nl μNorm 144 2395 Gem 07h 27m 12.9s +13� 36' 29" 8.0v 22 12 Plei 145 Tr.6 Cma 07h 26m 06.0s -24� 18' 00" 10.0p 20 6 Plei 146 Tr.7 Pup 07h 27m 18.0s -24� 02' 00" 7.9v 12� 5 Plei 147 Mel.66 Pup 07h 26m 23.0s -47� 40' 00" 7.8p (200) 10 Praes 148 2396 Pup 07h 28m 02.9s -11� 43' 11" 7.4v 40 10 Plei 149 2401 Pup 07h 29m 24.4s -13� 57' 58" 12.6v (20) 2 Praes 150 2414 Pup 07h 33m 12.8s -15� 27' 14" 7.9v (35) 4 Plei 151 2421 Pup 07h 36m 11.8s -20� 36' 44" 8.3v 28 10 Praes 152 2422 (M47) Pup 07h 36m 35.0s -14� 28' 57" 4.4v 50 29 Plei 153 2423 Pup 07h 37m 06.7s -13� 52' 17" 6.7v 40 19 Praes 154 2420 Gem 07h 38m 23.9s +21� 34' 27" 8.3v (100+) 10 Plei 155 Mel.71 Pup 07h 37m 30.0s -12� 04' 00" 7.1v 60 9 Praes 156 Mel.72 Mon 07h 38m 24.0s -10� 41' 00" 10.1p 24 9 Praes 15 157 2432 Pup 07h 40m 53.8s -19� 05' 09" 10.2v (50+) 7 Praes 158 2439 Pup 07h 40m 45.4s -31� 41' 33" 6.9v 26 10 Plei 159 2437 (M46) Pup 07h 41m 46.8s -14� 48' 36" 6.1v 125 27 Praes 160 2447 (M93) Pup 07h 44m 29.2s -23� 51' 11" 6.2v 80 22 Praes 161 2451 Pup 07h 45m 15.0s -37� 58' 03" 2.8v 35 45 Plei 162 2453 Pup 07h 47m 34.1s -27� 11' 41" 8.3v 10 5 Plei 163 2455 Pup 07h 48m 58.6s -21� 17' 53" 10.2v 20 7 Plei 164 2467 Pup 07h 52m 29.5s -26� 25' 48" 7.1v 20 15 Neb 165 2477 Pup 07h 52m 09.8s -38� 32' 00" 5.8v 300 27 Glob 166 2482 Pup 07h 55m 10.3s -24� 15' 17" 7.3v 28 12 Plei 167 Tr.8 Pup 07h 55m 04.0s -17� 42' 35" 9.6p 30 7 Praes 168 Tr.9 Pup 07h 55m 18.0s -25� 56' 00" 8.7v 14 5 Plei 169 2489 Pup 07h 56m 15.9s -30� 03' 51" 7.9v 60 8 Praes 170 2506 Mon 08h 00m 01.7s -10� 46' 11" 7.6v 80 8 Praes 171 2509 Pup 08h 00m 47.8s -19� 03' 02" 9.3v 30 8 Plei 172 2516 Car 07h 58m 07.1s -60� 45' 12" 3.8v 70 29 Praes 173 Vel 08h 02m 49.0s -46� 23' 00" 0.6v 70 370 Plei 174 2527 Pup 08h 04m 58.2s -28� 08' 48" 6.5v 40 22 Plei 175 2533 Pup 08h 07m 04.1s -29� 53' 02" 7.6v 30� 3.5 Praes 176 2539 Pup 08h 10m 37.9s -12� 49' 09" 6.5v 65 21 Praes 177 2547 Vel 08h 10m 10.5s -49� 13' 32" 4.7v 40 20 Plei 178 2546 Pup 08h 12m 15.6s -37� 35' 39" 6.3v 40 40 Plei 179 2548 (M48) Hya 08h 13m 43.1s -05� 45' 02" 5.8v 90 54 Praes 180 2567 Pup 08h 18m 29.1s -30� 38' 44" 7.4v 40 10 Plei 181 2571 Pup 08h 18m 56.3s -29� 44' 57" 7.0v 20 13 Plei 182 2579 Pup 08h 20m 53.0s -36� 13' 02" 7.5v 14 10 Plei 16 183 2580 Pup 08h 21m 27.9s -30� 17' 36" 9.7v 25 7 Praes 184 2587 Pup 08h 23m 24.1s -29� 30' 31" 9.2v 18 9 Plei 185 Pup 08h 22m 30.0s -36� 10' 00" 7.8v 15 8 Plei 186 2588 Pup 08h 23m 09.5s -32� 58' 31" 11.8v (20+) 2 Praes 187 Pup 08h 24m 12.0s -29� 09' 00" 9.6p (20) 7 Plei 188 2627 Pyx 08h 37m 14.9s -29� 57' 01" 8.4v 30 11 Praes 189 2632 (M44) Cnc 08h 40m 22.2s +19� 40' 19" 3.1v 60 95 Praes 190 2635 Pyx 08h 38m 26.0s -34� 46' 18" 11.2v (15) 3 Praes 191 IC2391 Vel 08h 40m 21.0s -53� 05' 21" 2.0v 15 60 Plei 17 192 IC2395 Vel 08h 42m 31.0s -48� 06' 30" 4.0v 19 7 Plei 193 2660 Vel 08h 42m 38.0s -47� 12' 02" 8.8v (70) 4 Glob 194 2659 Vel 08h 42m 33.0s -45� 00' 02" 8.6v 35 2.7 Praes 195 2658 Pyx 08h 43m 27.3s -32� 39' 22" 9.2v 40 12 Praes 196 Pyx 08h 45m 00.0s -31� 38' 00" 10.5p (12) 5 Praes 197 Vel 08h 44m 51.0s -41� 14' 00" 6.7p 14 40 Plei 198 Pyx 08h 45m 18.0s -31� 46' 00" 11.2 nl 5 Praes 199 2669 Vel 08h 46m 19.0s -52� 56' 06" 6.1v 25 12 Praes 18 200 2670 Vel 08h 45m 29.5s -48� 47' 30" 7.8v 25 9 Plei 201 2671 Vel 08h 46m 11.9s -41� 52' 38" 11.6v (40) 4 Praes 202 Harv.3 Vel 08h 46m 30.0s -52� 54' 00" 6.1p 22 12 Plei 18 203 Tr.10 Vel 08h 47m 54.0s -42� 27' 00" 5.0v 18 29 Plei 204 2682 (M67) Cnc 08h 51m 20.1s +11� 48' 43" 6.9v 90 29 Praes 205 Markarian 18 Vel 09h 00m 32.0s -48� 59' 06" 7.8v 8 5 μNorm 206 2818 Pyx 09h 16m 01.5s -36� 37' 37" 8.2v 25 9 Praes 19 207 2849 Vel 09h 19m 22.9s -40� 31' 13" 12.5v (40) 2.3 Praes 208 IC2488 Vel 09h 27m 45.0s -57� 40' 08" 7.4 70 18 Plei 209 2910 Vel 09h 30m 29.0s -52� 54' 50" 7.2v 15 5 Plei 210 2925 Vel 09h 33m 10.9s -53� 23' 45" 8.3v 30 12 Plei 211 2972 Vel 09h 40m 11.5s -50� 19' 15" 9.9v (25) 4 Praes 212 3033 Vel 09h 48m 39.1s -56� 24' 42" 8.8v (50) 5 Plei 213 Vel 09h 54m 35.0s -50� 55' 11" 9.2p 21 17 Plei 214 3105 Vel 10h 00m 39.5s -54� 47' 15" 9.7v (20) 2 Praes 215 3114 Car 10h 02m 42.7s -60� 06' 32" 4.2v 100 35 Plei 216 Tr.11 Car 10h 04m 58.6s -61� 36' 54" 8.1p 15 5 Plei 217 Tr.12 Car 10h 06m 29.0s -60� 18' 00" 8.8p 12 4 Plei 218 3228 Vel 10h 21m 22.2s -51� 43' 57" 6.0v 22 5 Plei 219 Tr.13 Car 10h 23m 49.6s -60� 08' 14 " 11.3 (40) 5 Plei 220 (incorrectly) 3247 Car 10h 25m 52.0s -57� 55' 35" 7.6p 18 6 Plei 20 221 3255 Car 10h 26m 31.3s -60� 40' 42" 11.0v (30) 2 Glob 21 222 IC2581 Car 10h 27m 36.0s -57� 40' 13" 4.0v 14 7 μNorm 223 Car 10h 30m 24.0s -60� 05' 00" 9.4 30 9 Plei 224 3293 Car 10h 35m 53.8s -58� 14' 10" 4.7v (93) 5 Praes 225 3324 Car 10h 37m 18.7s -58� 39' 36" 6.7 (44) 5 (Neb) 226 3330 Vel 10h 38m 47.5s -54� 06' 56" 7.4v 20 6 Plei 227 Mel.101 Car 10h 42m 12.0s -65� 06' 00" 8.0v 70 16 Praes 228 Car 10h 42m 04.0s -59� 55' 00" 4.4v 50 14 Neb 229 IC2602 Car 10h 43m 23.0s -64� 26' 13" 1.0v 24 100 Neb 230 Tr.14 Car 10h 43m 56.0s -59� 33' 00" 5.5v (44) 5 Neb 231 Tr.15 Car 10h 44m 43.0s -59� 22' 00" 7.0v 15 15 Neb 232 Car 10h 44m 59.0s -59� 33' 00" 6.8v 15 4 Plei 233 eta Car cluster (Tr 16) Car 10h 45m 16.2s -59� 43' 17" 5.0v 40 10 Neb 22 234 Tr 16 Car 10h 45m 21.0s -59� 45' 00" 5.0v (18) 3 Plei 22 235 Tr.17 Car 10h 56m 24.0s -59� 12' 00" 8.4 25 5 Plei 236 Car 10h 57m 17.0s -61� 06' 36" 7.7v 30 10 Plei 237 3496 Car 10h 59m 33.8s -60� 20' 12" 8.2v 45 9 Praes 238 3532 Car 11h 05m 47.5s -58� 46' 13" 3.0v 135 55x50 Praes 239 3572 Car 11h 10m 19.2s -60� 14' 54" 6.6v nl 6 Plei 23 240 Car 11h 10m 19.2s -60� 14' 54" n/a 20 n/a Plei 23 241 Tr.18 Car 11h 11m 28.0s -60� 40' 00" 6.9v 10 6 Plei 242 3590 Car 11h 12m 59.0s -60� 47' 20" 8.2v 15 4 Plei 243 Tr.19 Car 11h 15m 07.0s -57� 33' 00" 9.6v (40) 10 Praes 24 244 3603 Car 11h 15m 06.6s -61� 15' 40" 9.1v (44) 2.5 Praes 245 IC2714 Car 11h 18m 08.0s -62� 44' 21" 8.0v 120 15 Praes 246 Mel.105 Car 11h 19m 42.0s -63� 29' 00" 8.5v 40� 5 Praes 247 3680 Cen 11h 25m 37.1s -43� 15' 00" 7.6v 25 12 Praes 248 3766 Cen 11h 36m 14.4s -61� 36' 36" 5.3v 137 12 Praes 249 Cen 11h 36m 52.0s -63� 04' 24" 4.0v 25 65 Neb 250 3960 Cen 11h 50m 33.2s -55� 40' 35" 8.3v 60 6 Praes 251 4052 Cru 12h 02m 05.2s -63� 13' 24" 8.8v 60 10 Plei 252 4103 Cru 12h 06m 39.5s -61� 15' 00" 7.4v 20� 6 Plei 253 4230 Cen 12h 17m 09.3s -55� 17' 10" 9.4v (15) 7x5 Plei 254 4337 Cru 12h 24m 03.3s -58� 07' 25" 8.9v 20 3.5 Plei 25 255 4349 Cru 12h 24m 06.0s -61� 52' 13" 7.4v 70 15 Praes 256 Mel.111 Com 12h 25m 00.0s +26� 00' 00" 1.8v 30 275 Plei 257 Cru 12h 24m 45.9s -60� 53' 12" nl 12 5 Plei 26 258 Harv.5 Cru 12h 27m 10.0s -60� 46' 00" 7.1v (25) 5 Plei 26 259 4439 Cru 12h 28m 26.3s -60� 06' 11" 8.4v (20) 4 Plei 260 4463 Mus 12h 29m 55.2s -64� 47' 23" 7.2v 18� 5 Plei 261 Harv.6 Mus 12h 37m 57.0s -68� 22' 00" 10.7v (100) 9 Praes 262 Tr.20 Cru 12h 39m 34.0s -60� 37' 00" 10.1v nl 7 Praes 263 4609 Cru 12h 42m 19.9s -62� 59' 38" 6.9v 12 5 Plei 264 4755 Cru 12h 53m 37.1s -60� 21' 22" 4.2v (218) 10 Plei 27 265 4815 Mus 12h 57m 58.3s -64� 57' 42" 8.6v (100) 3 Praes 28 266 4852 Cen 13h 00m 14.5s -59� 36' 58" 8.9v 20 11 Plei 267 5053 Com 13h 16m 27.0s +17� 41' 52" 9.0v nl 11 Praes 29 268 (Harvard 8) Mus 13h 18m 13.0s -67� 05' 00" 9.5v 30 5 Plei 269 Mus 13h 23m 31.0s -66� 10' 48" 9.2p nl 15 Plei 30 270 5138 Cen 13h 27m 15.2s -59� 02' 27" 7.6v 15 7 Plei 271 Cen 13h 29m 54.0s -64� 12' 00" 8.7v 16 5 Plei 272 Cen 13h 30m 26.0s -61� 19' 00" 7.7v 15 10 Plei 273 5168 Cen 13h 31m 07.3s -60� 56' 21" 9.1v (50) 4 Praes 274 Tr.21 Cen 13h 32m 14.0s -62� 48' 00" 7.7v (20) 5 Praes 275 Cen 13h 34m 39.0s -60� 12' 00" 10.2v (20) 11 Plei 276 5281 Cen 13h 46m 35.1s -62� 54' 59" 5.9v (40) 8 Plei 277 Cir 13h 48m 00.0s -66� 04' 00" 9.2v (30) 15 Praes 278 5288 Cir 13h 48m 44.9s -64� 41' 07" 11.8v nl 4 Plei 279 5316 Cen 13h 53m 57.2s -61� 52' 09" 6.0v 22 13 Plei 280 5460 Cen 14h 07m 27.7s -48� 20' 33" 5.6v 50 35 Praes 281 5606 Cen 14h 27m 47.2s -59� 37' 56" 7.7v (15) 3 Plei 282 5617 Cen 14h 29m 44.0s -60� 42' 39" 6.3v 60 10 Praes 283 Tr.22 Cen 14h 31m 02.0s -61� 10' 00" 7.9v 15 10 Plei 31 284 5662 Cen 14h 35m 37.5s -56� 37' 05" 5.5v 35 30 Plei 285 Ursa Major Uma 12h 03m 00.0s +58� 00' 00" nl nl nl nl 286 5715 Cir 14h 43m 29.7s -57� 34' 37" 9.8v 20 5 Praes 287 5749 Lup 14h 48m 53.9s -54� 29' 51" 8.8v 16 7 Plei 288 5764 Lup 14h 53m 32.2s -52� 40' 14" 12.6v 12 3 nl 289 5822 Lup 15h 04m 21.2s -54� 23' 47" 6.5v 100 39 Plei 290 5823 Cir 15h 05m 30.6s -55� 36' 13" 7.9v 30 12 Plei 291 5925 Nor 15h 27m 26.7s -54� 31' 43" 8.4v 45 20 Plei 292 Nor 15h 49m 51.0s -57� 37' 11" 7.9v (50) 15 Plei 293 5999 Nor 15h 52m 08.6s -56� 28' 22" 9.0v 40 3 Praes 294 6005 Nor 15h 55m 48.7s -57� 26' 14" 10.7v 14 3 Praes 32 295 Tr.23 Nor 16h 00m 48.0s -53� 32' 00" 11.2v 25 9 Plei 296 6025 TrA 16h 03m 17.0s -60� 25' 54" 5.1v 25 12 Plei 297 6031 Nor 16h 07m 35.0s -54� 00' 54" 8.5v (121) 2 Plei 298 6067 Nor 16h 13m 11.0s -54� 13' 06" 5.6v 115 12 Praes 299 Harv.10 Nor 16h 19m 54.0s -54� 58' 00" 6.9p 24 25 Plei 300 6087 Nor 16h 18m 50.5s -57� 56' 04" 5.4v 30 12 Plei 301 6124 Sco 16h 25m 20.0s -40� 39' 13" 5.8v 60 40 Praes 302 Antares Cl. Sco 16h 26m 00.0s -26� 13' 00" 1.0v 20� 505 Neb 303 6134 Nor 16h 27m 46.5s -49� 09' 04" 7.2v 45 6 Praes 304 6152 Nor 16h 32m 45.5s -52� 38' 38" 8.1v 35 29 Praes 305 6167 Nor 16h 34m 34.9s -49� 46' 19" 6.7v 40 7 Plei 306 6169 Nor 16h 34m 04.6s -44� 02' 44" 6.6v (40) 12 μNorm 307 Nor 16h 35m 20.0s -51� 00' 00" 9.2v 22 5 Plei 308 6178 Sco 16h 35m 47.2s -45� 38' 37" 7.2v 7 4 Plei 309 6192 Sco 16h 40m 23.8s -43� 22' 00" 8.5v 25 7 Praes 310 6193 Ara 16h 41m 20.2s -48� 45' 45" 5.2v 25 14 Plei 311 6200 Ara 16h 44m 07.3s -47� 27' 45" 7.4v 40 12 Plei 312 6204 Ara 16h 46m 09.5s -47� 01' 01" 8.2v 20 5 Praes 313 6208 Ara 16h 49m 28.1s -53� 43' 42" 7.2v 40 15 Praes 314 6222 Sco 16h 49m 23.5s -44� 43' 53" 10.1v 22 4 Praes 33 315 6231 Sco 16h 54m 10.9s -41� 49' 27" 2.6v (93) 14 Plei 316 Sco 16h 55m 30.0s -40� 50' 00" 6.6v 60 105 Plei 34 317 6242 Sco 16h 55m 33.4s -39� 27' 39" 6.4v 50 9 Praes 318 Tr.24 Sco 16h 57m 00.0s -40� 40' 00" 8.6p 15 60 Plei 319 6249 Sco 16h 57m 41.5s -44� 48' 43" 8.2v 18 6 Plei 320 6250 Ara 16h 57m 56.0s -45� 56' 12" 5.9v 10 7 Plei 321 6253 Ara 16h 59m 05.1s -52� 42' 32" 10.2v 25 5 Praes 322 6259 Sco 17h 00m 45.3s -44� 39' 18" 8.0v 60 10 Praes 323 6268 Sco 17h 02m 10.3s -39� 43' 42" 9.5v 22 6 Plei 324 6281 Sco 17h 04m 41.2s -37� 59' 07" 5.4v 25 8 Plei 325 6318 Sco 17h 16m 11.5s -39� 25' 30" 11.8v 20� 5 Praes 326 6322 Sco 17h 18m 25.7s -42� 56' 02" 6.0v 12� 10 Plei 327 IC4651 Ara 17h 25m 14.0s -49� 57' 35" 6.9v 65 10 Praes 328 6352 Her 17h 19m 11.3s +36� 03' 38" 7.8v nl 7.1 Glob 35 329 Tr.25 Sco 17h 24m 48.0s -30� 00' 00" 11.7p 18� 4 Plei 330 6355 Oph 17h 23m 58.5s -26� 21' 13" 8.6v nl 5 Glob 36 331 Tr.26 Oph 17h 28m 30.0s -29� 29' 00" 9.5p 20 17 Plei 332 Sco 17h 30m 48.0s -37� 05' 00" 8.9v 25 2 Plei 333 Sco 17h 31m 18.0s -34� 05' 00" 9.8p 8 5 Plei 334 6374 (6383) Sco 17h 34m 42.4s -32� 34' 53" 5.5 10 2.5 Plei 37 335 6383 Sco 17h 34m 42.4s -32� 34' 53" 5.5v 10 2.5 μNorm 37 336 Tr.27 Sco 17h 36m 12.0s -33� 29' 00" 6.7v 15 6 Plei 337 Tr.28 Sco 17h 36m 48.0s -32� 29' 00" 7.7v 22 12.5 Praes 338 Sco 17h 38m 06.0s -37� 43' 12" 8.0v 20 20 Plei 339 6396 Sco 17h 37m 38.0s -35� 01' 33" 8.5v 8 nl Plei 38 340 6404 Sco 17h 39m 37.3s -33� 14' 48" 10.6v 12 5 Plei 341 6405 (M6) Sco 17h 40m 20.7s -32� 15' 15" 4.2v 55 33 Plei 342 6400 Sco 17h 40m 12.7s -36� 56' 52" 8.8v 25 12 Plei 343 Tr.29 Sco 17h 41m 36.0s -40� 06' 00" 7.5p 22 9 Plei 344 6416 Sco 17h 44m 19.9s -32� 21' 40" 5.7v 35 30 Plei 345 Sco 17h 44m 35.0s -33� 52' 00" 10.9v 12 4.8 Plei 346 6426 Oph 17h 44m 54.6s +03� 10' 13" 10.9v nl 4.2 Praes 39 347 Oph 17h 46m 18.0s -29� 20' 00" 8.8v 14 10 Plei 348 6425 Sco 17h 47m 01.6s -31� 31' 46" 7.2v 25 15 Plei 349 IC4665 Oph 17h 46m 18.0s +05� 43' 00" 4.2v 28 40 Plei 350 Oph 17h 48m 07.0s +01� 21' 00" 6.1v 25 40 Plei 351 Sgr 17h 49m 04.0s -28� 45' 00" 9.3v 22 8 Plei 352 6451 Sco 17h 50m 40.6s -30� 12' 42" 8.2v 40 7 Praes 353 6469 Sgr 17h 53m 12.1s -22� 16' 30" 8.2v 35 8 Plei 354 6475 (M7) Sco 17h 53m 51.1s -34� 47' 34" 3.3v 60 80 Plei 355 Tr.30 Sco 17h 56m 30.0s -35� 19' 00" 8.8p 50 10 Plei 356 6494 (M23) Sgr 17h 57m 04.7s -18� 59' 07" 5.5v 85 30 Praes 357 Tr.31 Sgr 17h 59m 49.0s -28� 10' 00" 9.8v 42 5 Plei 358 6507 Sgr 17h 59m 50.7s -17� 27' 01" 9.6v 16 6 Plei 359 Melotte 186 Oph 18h 01m 06.0s +02� 54' 00" 3.0v 15 240 Plei 360 6514 Sgr 18h 02m 20.9s -23� 01' 38" 6.3v 40 30 Neb 361 6520 Sgr 18h 03m 25.1s -27� 53' 28" 7.6v 20 6 Plei 362 6530 Sgr 18h 04m 31.0s -24� 21' 29" 4.6v 20 14 Neb 363 6531 (M21) Sgr 18h 04m 13.4s -22� 29' 24" 5.9v 25� 13 Plei 364 6540 Sgr 18h 06m 08.5s -27� 45' 55" 14.6v nl 1.5 Praes 365 6546 Sgr 18h 07m 22.5s -23� 17' 46" 8.0v 20 15 Praes 366 6544 Sgr 18h 07m 20.5s -24� 59' 51" 7.5v nl 8.9 Glob 41 367 Sgr 18h 09m 43.0s -23� 39' 35" 6.4 10 40 Neb 368 6558 Sgr 18h 10m 18.3s -31� 45' 49" 8.6v nl 3.7 Praes 42 369 6568 Sgr 18h 12m 45.1s -21� 34' 59" 8.6v 29 12 Plei 370 6583 Sgr 18h 15m 49.9s -22� 08' 09" 10.0v 30� 5 Praes 371 6595 Sgr 18h 17m 16.0s -19� 44' 30" 7.0v 12 4x3 Neb 43 372 Tr.32 SerCD 18h 17m 10.4s -13� 20' 40" 12.2p 20 6 Praes 373 6604 SerCD 18h 18m 02.9s -12� 14' 35" 6.5v 10� 4 μNorm 374 6603 Sgr 18h 18m 26.9s -18� 24' 22" 11.1v (100) 5 Praes 44 375 6611 (M16) SerCD 18h 18m 48.1s -13� 48' 26" 6.0v 30 21 Neb 376 6613 (M18) Sgr 18h 19m 58.4s -17� 06' 07" 6.9v 14 10 Plei 377 6618 Sgr 18h 21m 09.0s -16� 10' 36" 6.0v 27 27 Neb 45 378 Tr.33 Sgr 18h 24m 42.0s -19� 43' 00" 7.8v 10 6 Plei 379 6631 Sct 18h 27m 11.3s -12� 01' 52" 11.7v 20� 7 Praes 380 6633 Oph 18h 27m 15.2s +06� 30' 30" 4.6v 30 20 Plei 381 6642 Sgr 18h 31m 54.3s -23� 28' 35" 8.9v nl 5.8 Glob 46 382 IC4725 (M25) Sgr 18h 31m 36.0s -19� 15' 00" 4.6v 60 32 Praes 383 6645 Sgr 18h 32m 37.9s -16� 53' 02" 8.5v 100 15 Praes 384 6649 Sct 18h 33m 27.9s -10� 24' 10" 8.9v 15 5 Praes 385 6664 Sct 18h 36m 33.3s -08� 13' 15" 7.8v 28 16 Praes 386 IC4756 Ser 18h 39m 00.0s +05� 27' 00" 4.6v 120 52 Praes 387 Tr.34 Sct 18h 39m 48.0s -08� 29' 00" 8.6v 20 7 Plei 47 388 Tr.35 Sct 18h 42m 54.0s -04� 08' 00" 9.2v 25 9 Plei 389 6694 (M26) Sct 18h 45m 18.6s -09� 23' 01" 8.0v 18 14 Praes 390 6704 Sct 18h 50m 45.7s -05� 12' 20" 9.2v 20 6 Plei 391 6705 (M11) Sct 18h 55m 21.9s -53� 49' 11" 5.8v 100� 13 Glob 48 392 6709 Aql 18h 51m 18.9s +10� 19' 07" 6.7v 40 13 Praes 393 6716 Sgr 18h 54m 34.3s -19� 54' 04" 7.5v 15 6 Plei 394 Sgr 18h 52m 28.0s -20� 59' 28" 6.3v 22 22 Praes 395 6717 Sgr 18h 55m 05.9s -22� 42' 06" 8.4v nl 3.9 Glob 49 396 6738 Aql 19h 01m 21.5s +11� 36' 56" 8.3v 20 15 Plei 397 6755 Aql 19h 07m 49.0s +04� 15' 59" 7.5v 25 14 Plei 398 6756 Aql 19h 08m 42.5s +04� 42' 21" 10.6v (40) 4 Praes 399 4-5 Vul. Vul 19h 25m 24.0s +20� 11' 00" 3.6v 15 60 Plei 50 400 6802 Vul 19h 30m 35.0s +20� 15' 39" 8.8v 201 5 Plei 401 Aql 19h 38m 24.0s -00� 20' 00" 7p 8� 1 μNorm 402 6811 Cyg 19h 37m 17.9s +46� 23' 20" 6.8v 40 12 Praes 403 6819 Cyg 19h 41m 18.0s +40� 11' 12" 7.3v 929 5 Plei 404 6820 Vul 19h 42m 27.9s +23� 05' 17" 14.9p 6 0.8 Neb 51 405 6823 Vul 19h 43m 09.8s +23� 18' 00" 7.1v 13 12 Plei 406 6830 Vul 19h 50m 59.5s +23� 06' 00" 7.9v 15 12 Plei 407 6834 Cyg 19h 52m 12.5s +29� 24' 29" 7.8v 40 5 Praes 408 Harv.20 Sge 19h 53m 06.0s +18� 20' 00" 7.7v 20 9 Plei 409 6838 Sge 19h 53m 46.1s +18� 46' 42" 8.4v 150� 7.2 Glob 52 410 6846 Cyg 19h 56m 28.0s +32� 20' 59" 14.2v (40) 0.5 Plei 411 Mel.227 Oct 20h 17m 19.0s -79� 02' 00" 5.3v 20 70 Plei 412 6866 Cyg 20h 03m 55.1s +44� 09' 33" 7.6v 20 6 Plei 413 6871 Cyg 20h 05m 59.3s +35� 46' 38" 5.2v 45 30 Plei 414 IC1311 Cyg 20h 10m 48.0s +41� 11' 00" 13.1p (60) 9 Glob 53 415 6883 Cyg 20h 11m 19.7s +35� 49' 56" 8.0v 18 35 Plei 416 6882 Vul 20h 11m 55.8s +26� 29' 20" 8.1v 20 20 Plei 54 417 6885 Vul 20h 11m 55.8s +26� 29' 20" 8.1v 40 20 Plei 54 418 IC4996 Cyg 20h 16m 30.0s +20� 16' 30" 7.3v 12 5 Plei 419 Cyg 20h 18m 06.0s +40� 43' 00" 5.4p 16 4.5 μNorm 420 6910 Cyg 20h 23m 12.0s +40� 46' 43" 7.4v 16 7 Plei 421 Cyg 20h 23m 18.0s +41� 42' 00" 10.1p 20 5 Praes 422 6913 (M29) Cyg 20h 23m 57.7s +38� 30' 28" 6.6v 15 6 Plei 423 6939 Cep 20h 31m 30.1s +60� 39' 44" 7.8v 40 7 Praes 424 6940 Vul 20h 34m 26.6s +28� 16' 58" 6.3v 90 31 Praes 425 6996 Cyg 20h 56m 29.9s +45� 28' 23" 10.0v 20 5 Neb 55 426 6994 (M73) Aqr 20h 58m 55.9s -12� 38' 08" 8.9v (4) 2.8 Glob 56 427 Cep 20h 59m 30.0s +68� 10' 00" 13.8v 6 4 Plei 428 Cyg 21h 03m 12.0s +44� 35' 00" 8.7p 40 13 Neb 429 7023 Cep 21h 01m 35.5s +68� 10' 11" nl nl 18 Neb 57 430 7031 Cyg 21h 07m 12.5s +50� 52' 32" 9.1v 15 5 Plei 431 7039 Cyg 21h 10m 47.7s +45� 37' 19" 7.6v 35 25 Plei 432 IC1369 Cyg 21h 12m 06.0s +47� 44' 00" 8.8v 10 8 Plei 433 7044 Cyg 21h 13m 09.3s +42� 29' 46" 12.0v 40 3.5 Praes 434 7062 Cyg 21h 23m 27.4s +46� 22' 43" 8.3v 10 6 Praes 435 7063 Cyg 21h 24m 21.7s +36� 29' 15" 7.0v 10 7 Plei 436 7067 Cyg 21h 24m 23.1s +48� 00' 34" 9.7v (47) 3 Praes 437 7086 Cyg 21h 30m 27.5s +51� 36' 08" 8.4v 20 9 Praes 438 7092 (M39) Cyg 21h 31m 48.3s +48� 26' 55" 4.6v 22 31 Plei 439 IC1396 Cep 21h 39m 06.0s +57� 30' 00" 3.5v 35 50 Plei 440 7128 Cyg 21h 43m 57.7s +53� 42' 55" 9.7v 10 3.1 Plei 441 7129 Cep 21h 42m 58.9s +66� 06' 47" 11.5p 7 7 Plei 442 7142 Cep 21h 45m 09.4s +65� 46' 28" 9.3v 12 4.3 Plei 443 7160 Cep 21h 53m 40.2s +62� 36' 12" 6.1v 16 7 Plei 444 7209 Lac 22h 05m 07.8s +46� 29' 01" 7.7v 30 25 Praes 445 IC1434 Lac 22h 10m 30.0s +52� 50' 00" 9.0p 30 7 Praes 446 7226 Cep 22h 10m 26.9s +55� 23' 55" 9.6v (83) 2 Praes 447 7235 Cep 22h 12m 24.9s +57� 16' 17" 7.7v 12 4 Plei 448 7243 Lac 22h 15m 08.5s +49� 53' 51" 6.4v 40 21 Plei 449 7245 Lac 22h 15m 11.5s +54� 20' 33" 9.2v (169) 5 Plei 450 7261 Cep 22h 20m 11.3s +58� 07' 19" 8.4v 18 5 Plei 451 7296 Lac 22h 28m 02.8s +52� 17' 21" 9.7v 10 3 Plei 452 7380 Cep 22h 47m 20.9s +58� 07' 57" 7.2v 20 12 Plei 453 7419 Cep 22h 54m 20.0s +60� 48' 56" 13.0v (40) 6 Praes 454 7510 Cep 23h 11m 03.7s +60� 34' 15" 7.9v 10� 7 Plei 455 7654 (M52) Cas 23h 24m 50.4s +61� 36' 24" 6.9v 35 16 Praes 456 7686 And 23h 30m 07.3s +49� 08' 03" 5.6v 20 14 Plei 58 457 7762 Cep 23h 50m 01.7s +68� 02' 17" 10.0p (40) 15 Praes 458 Harv.21 Cas 23h 54m 06.0s +61� 46' 00" 9.0p 10� 6 Plei 59 459 7788 Cas 23h 56m 45.5s +61� 24' 00" 9.4v 15 4 Plei 460 7789 Cas 23h 57m 24.0s +56� 42' 30" 6.7v 100 25 Praes 461 7790 Cas 23h 58m 24.2s +61� 12' 30" 8.5v 18 5 Plei 462 189 Cas 00h 39m 35.7s +61� 05' 40" 8.8v (90) 5 Plei 463 (20a) Cas 01h 48m 24.0s +71� 57' 00" nl nl nl Plei 464 (60a) Cam 05h 22m 00.0s +73� 00' 00" 4.2p nl 120 Plei 465 (127a) Mon 07h 07m 12.0s -10� 37' 00" 10.1p nl 9 Praes 466 (127b) Mon 07h 07m 18.0s -10� 49' 00" 11.1p (25) 4 Praes 467 (156a) (Mel 72 per A/H) Mon 07h 38m 29.0s -10� 33' 00" 10.1v (40) 5 Praes 15 468 (364a) Sgr 18h 06m 36.0s -27� 28' 00" 11v 8 0.9 Plei 469 (370a) Sgr 18h 16m 15.0s -18� 16' 00" 9.1v (51) 2.6 Plei 470 (442a) IC5146 Cyg 21h 53m 24.0s +47� 16' 00" 7.2v (110) 9 Neb 471 (444a) Cep 22h 07m 06.0s +72� 00' 00" nl nl 130 Plei Notes for Specific Objects Nearly all the notes below were gleaned from the book Star Clusters by Brent A. Archinal and Steven J. Hynes. Specific references to portions of the book are provided where they seemed especially useful. 1. Cr 8: Collinder lists as the NGC designation for this cluster the number 281. However, NGC 281 is itself not a cluster, but a reflection nebula. The cluster Collinder studied here is properly designated IC 1590. 2. Cr 21: Asterism. 3. Cr 24 & Cr 25: The Double Cluster 4. Cr 26: More likely to be found on charts as IC 1805. 5. Cr 32/33/34: Essentially all parts of one complex, IC 1848 per A/H pg 134. 6. Cr. 39: Perseus Moving Cluster/Group (Mel 20). 7. Cr. 41: Often depicted elsewhere as a bright nebula without mention of the loose cluster involved. 8. Cr 50: TMC = Taurus Moving Cluster. 9. Cr. 63: Associated with nebula IC 410. 10. Cr. 69: a.k.a. Lambda Orionis cluster. 11. Cr. 70: Orion belt cluster. 12. Cr. 81: Sometimes erroneously listed as a globular cluster. 13. Cr. 84: The NGC number listed by Collinder is properly assigned to the nebulosity surrounding Cr.84, NOT to the cluster itself (which may not actually be a cluster). 14. Cr. 109 Some references give an erroneous location of 06h 38.4m +01� 11' due to an original error by Collinder. 15. Cr 156: According to A/H Collinder 156=Mel 72=Cr 467. 16. Cr 182: It is possible that this is not an actual star cluster. 17. Cr 191: The center of a super cluster (A/H p. 137); good binocular object. 18. Cr. 199 and 202: something of a messy situation, with Cr 202 (Harvard 3) being included as a separate cluster by various authors, but with very different coordinates, even though Harv. 3 is actually "inside"of NGC 2669 (Cr 199); Cr 202 is apparently a central condensation of the larger cluster. (See A/H p. 168) 19. Cr. 206: an open cluster that actually includes a planetary nebula; A/H argue that the planetary nebula should be given the NGC designation used by Collinder, with the cluster being identified as Cr 206. 20. Cr. 220: In assembling his catalog Collinder incorrectly identified this cluster as NGC 3247, when it was in fact a "new"cluster. Sold himself short. The NGC number is left in the spreadsheet because some references have apparently perpetuated this error. 21. Cr. 221: May not be a true star cluster. 22. Cr. 233 and 234: Both Collinder entries refer to the eta Carinae star cluster, with 234 applied by Collinder to the southern portion. The entire object is properly known as Trumpler 16. 23. Cr. 239 & 240: Another cluster in a cluster; 239 = NGC 3572, while 240 should be only a Cr. #. 24. Cr. 243 (Tr.19): Described by Skiff as "not obvious in 0.35 degree field." 25. Cr. 254: Probably not a true cluster. 26. Cr 257 & 258: Apparently labeled incorrectly some places as Harv. 5 or Hogg 74. (A/H p. 132 for details.) 27. Cr. 264: J. Herschel's "Jewel Box." 28. Cr. 265: Probably not a true cluster. 29. Cr. 267: This is actually a globular cluster. (A/H p.237) 30. Cr. 269: Probably not a true cluster. 31. Cr. 283: Probably not a true cluster. 32. Cr. 294: Probably not a true cluster. 33. Cr. 314: According to A/H Collinder was apparently incorrect in identifying this cluster with NGC 6222. No NSOG reference to this cluster under either designation. However, older atlases such as Norton's 19th edition show NGC 6222 is the specified position, as does the newer HB Astroatlas. The HCNGC lists NGC 6222 and Cr. 314 as synonymous. 34. Cr. 316: Appears to be superposed on Tr. 24, and may be part of the same cluster. 35. Cr. 328: Collinder and his mentor apparently thought this might be a globular cluster. Later studies have verified that this is indeed the case. 36. Cr. 330: Another globular cluster caught up in Collinder's survey. 37. Cr. 334 & 335: Duplicate listings; NGC 6374 is not a separate open cluster. 38. Cr. 339: Collinder provides NGC 6393 for this object, which turns out to be a galaxy in Draco. The coordinates in Collinder's catalog actually point to an object in Scorpius, and a check of the Historically Corrected New General Catalogue (HCNGC) Ver 1.02 shows NGC 6396 as the correct alias for Cr. 339. Data from the HCNGC has been used in the updated list. 39. Cr. 346: Another misidentified globular cluster. 40. Cr. 364: Another misidentified globular cluster. 41. Cr. 366: This really is, as Collinder and Lundmark believed, a globular cluster. 42. Cr. 368: Another globular cluster, which was not considered certain in Collinder's time. 43. Cr. 371: The NGC number applied by Collinder is actually a reference to the nebula around the cluster. He discovered the cluster himself, but apparently did not know he was first to make the distinction. 44. Cr. 374: This cluster is embedded within M24. 45. Cr. 377: Cluster associated with M17. 46. Cr. 381: Yet another cluster considered a globular when Collinder assembled his catalog. It's globular status has since been verified. 47. Cr. 387: May not be a real cluster. 48. Cr. 391: Collinder apparently considered M11 a globular cluster. 49. Cr. 395: A strange "object"that appears to be globular cluster NGC 6717 (Palomar 9) very near IC 4802, an OC along the same line of sight. 50. Cr. 399: The -�Coat Hanger' asterism, which is not a true star cluster. 51. Cr. 404: May be an asterism associated with nebula NGC 6820. 52. Cr. 409: Globular cluster M71. 53. Cr. 414: Was considered a possible globular cluster when Collinder made the catalog. 54. Cr. 416 & 417: Possibly only a part of NGC 6885. 55. Cr. 425: Probably an asterism in a nebulous region. 56. Cr. 426: It is thought that Collinder's description of M73 is actually for M72, a globular cluster, and not the object he intended for Cr. 426. 57. Cr. 429: Possible cluster associated with NGC 7023; the NGC number does not actually refer to his cluster. 58. Cr. 456: May not be a true cluster. 59. Cr.458: Another grouping that may not be a real cluster. 60. Cr. 471: Associated with the nebula identified by IC 5146; this number does not apply directly to the cluster.