The Brightest Open Clusters in the Sky

Name Constellation Magnitude
Name Constellation Magnitude
1 Orion's Belt Orion 0.6
2 Collinder 173 Puppis 0.6
3 Antares Cluster Scorpius 1.0
4 C41 Taurus 1.0
5 Collinder 39 Perseus 1.2
6 Alpha Persei Cluster Perseus 1.2
7 M45 Taurus 1.3
8 Collinder 256 Coma Berenices 1.8
9 Coma Star Cluster Coma Berenices 1.8
10 IC 2602 Carina 1.9
11 Collinder 135 Puppis 2.1
12 IC 2391 Vela 2.5
13 NGC 1980 Orion 2.5
14 NGC 6231 Scorpius 2.6
15 Omicron Canis Minorum Cluster Canis Major 2.6
16 NGC 2451 Puppis 2.8
17 Lambda Orionis Cluster Orion 2.8
18 Collinder 65 Orion 3.0
19 Melotte 186 Ophiuchus 3.0
20 Collinder 359 Ophiuchus 3.0
21 NGC 3532 Carina 3.0
22 M44 Cancer 3.1
23 M7 Scorpius 3.3
24 Tuft in the Tail of the Dog Canis Major 3.5
25 Collinder 132 Canis Major 3.6
26 Brocchi's Cluster Vulpecula 3.6
27 NGC 2516 Carina 3.8
28 M42 Orion 4.0
29 IC 2581 Carina 4.0
30 IC 2395 Vela 4.0
31 Collinder 249 Centaurus 4.0
32 NGC 2362 Canis Major 4.1
33 NGC 2264 Monoceros 4.1
34 M6 Scorpius 4.2
35 IC 4665 Ophiuchus 4.2
36 Collinder 62 Auriga 4.2
37 NGC 4755 Crux 4.2
38 NGC 2232 Monoceros 4.2
39 NGC 3114 Carina 4.2
40 NGC 1981 Orion 4.2
41 Collinder 464 Camelopardalis 4.2
42 C14 Perseus 4.3
43 M47 Puppis 4.4
44 Collinder 228 Carina 4.4
45 M41 Canis Major 4.5
46 M25 Sagittarius 4.6
47 M39 Cygnus 4.6
48 Collinder 106 Monoceros 4.6
49 NGC 6633 Ophiuchus 4.6
50 NGC 6530 Sagittarius 4.6
51 IC 4756 Serpens Cauda 4.6
52 NGC 2547 Vela 4.7
53 NGC 3293 Carina 4.7
54 NGC 2244 Monoceros 4.8
55 Collinder 203 Vela 5.0
56 Collinder 233 Carina 5.0
57 Collinder 234 Carina 5.0
58 M35 Gemini 5.1
59 Collinder 107 Monoceros 5.1
60 NGC 6025 Triangulum Australe 5.1
61 M34 Perseus 5.2
62 NGC 6871 Cygnus 5.2
63 NGC 6193 Ara 5.2
64 NGC 3766 Centaurus 5.3
65 NGC 869 Perseus 5.3
66 Collinder 411 Octans 5.3
67 Collinder 97 Monoceros 5.4
68 NGC 6281 Scorpius 5.4
69 NGC 6087 Norma 5.4
70 NGC 2281 Auriga 5.4
71 M23 Sagittarius 5.5
72 Collinder 230 Carina 5.5
73 NGC 6374 Scorpius 5.5
74 NGC 5662 Centaurus 5.5
75 M37 Auriga 5.6
76 NGC 7686 Andromeda 5.6
77 NGC 6067 Norma 5.6
78 NGC 5460 Centaurus 5.6
79 NGC 752 Andromeda 5.7
80 NGC 6416 Scorpius 5.7
81 Collinder 89 Gemini 5.7
82 NGC 6882 Vulpecula 5.7
83 M11 Scutum 5.8
84 M48 Hydra 5.8
85 NGC 6124 Scorpius 5.8
86 NGC 2477 Puppis 5.8
87 M21 Sagittarius 5.9
88 M50 Monoceros 5.9
89 NGC 2169 Orion 5.9
90 NGC 5281 Centaurus 5.9
91 Collinder 29 Perseus 5.9
92 NGC 6250 Ara 5.9
93 M16 Serpens Cauda 6.0
94 M17 Sagittarius 6.0
95 M36 Auriga 6.0
96 NGC 6322 Scorpius 6.0
97 NGC 6605 Serpens Cauda 6.0
98 NGC 3228 Vela 6.0
99 NGC 2301 Monoceros 6.0
100 NGC 5316 Centaurus 6.0
101 M46 Puppis 6.1
102 NGC 2669 Vela 6.1
103 NGC 884 Perseus 6.1
104 NGC 7160 Cepheus 6.1
105 Collinder 350 Ophiuchus 6.1
106 NGC 1746 Taurus 6.1
107 Collinder 202 Vela 6.1
108 M93 Puppis 6.2
109 NGC 1545 Perseus 6.2
110 M20 Sagittarius 6.3
111 NGC 5617 Centaurus 6.3
112 Collinder 394 Sagittarius 6.3
113 NGC 2546 Puppis 6.3
114 NGC 6940 Vulpecula 6.3
115 M38 Auriga 6.4
116 NGC 6242 Scorpius 6.4
117 Collinder 367 Sagittarius 6.4
118 NGC 457 Cassiopeia 6.4
119 NGC 7243 Lacerta 6.4
120 NGC 1528 Perseus 6.4
121 NGC 1647 Taurus 6.4
122 NGC 1662 Orion 6.4
123 Collinder 91 Monoceros 6.4
124 NGC 129 Cassiopeia 6.5
125 NGC 6604 Serpens Cauda 6.5
126 NGC 654 Cassiopeia 6.5
127 NGC 2520 Puppis 6.5
128 NGC 2354 Canis Major 6.5
129 IC 1805 Cassiopeia 6.5
130 NGC 2539 Puppis 6.5
131 NGC 5822 Lupus 6.5
132 M29 Cygnus 6.6
133 NGC 1444 Perseus 6.6
134 NGC 3572 Carina 6.6
135 Collinder 316 Scorpius 6.6
136 NGC 6169 Norma 6.6
137 NGC 2129 Gemini 6.7
138 NGC 7789 Cassiopeia 6.7
139 NGC 2423 Puppis 6.7
140 NGC 6709 Aquila 6.7
141 NGC 1027 Cassiopeia 6.7
142 NGC 1342 Perseus 6.7
143 NGC 6167 Norma 6.7
144 Collinder 197 Vela 6.7
145 NGC 2343 Monoceros 6.7
146 Collinder 336 Scorpius 6.7
147 NGC 3324 Carina 6.7
148 NGC 2175 Orion 6.8
149 Collinder 232 Carina 6.8
150 IC 1848 Cassiopeia 6.8
151 NGC 6811 Cygnus 6.8
152 M18 Sagittarius 6.9
153 M52 Cassiopeia 6.9
154 M67 Cancer 6.9
155 IC 4651 Ara 6.9
156 Collinder 241 Carina 6.9
157 NGC 1502 Camelopardalis 6.9
158 Collinder 299 Norma 6.9
159 NGC 2439 Puppis 6.9
160 NGC 4609 Crux 6.9
161 Collinder 36 Cassiopeia 7.0
162 NGC 225 Cassiopeia 7.0
163 NGC 1582 Perseus 7.0
164 NGC 1807 Taurus 7.0
165 Collinder 231 Carina 7.0
166 NGC 2571 Puppis 7.0
167 NGC 1857 Auriga 7.0
168 Collinder 401 Aquila 7.0
169 NGC 7063 Cygnus 7.0
170 Collinder 111 Monoceros 7.0
171 NGC 6823 Vulpecula 7.1
172 NGC 663 Cassiopeia 7.1
173 NGC 2467 Puppis 7.1
174 Collinder 155 Puppis 7.1
175 Collinder 258 Crux 7.1
176 NGC 2353 Monoceros 7.1
177 NGC 6134 Norma 7.2
178 NGC 2360 Canis Major 7.2
179 NGC 7380 Cepheus 7.2
180 NGC 4463 Musca 7.2
181 NGC 2910 Vela 7.2
182 NGC 6208 Ara 7.2
183 NGC 2335 Monoceros 7.2
184 NGC 6178 Scorpius 7.2
185 NGC 6425 Scorpius 7.2
186 NGC 7082 Cygnus 7.2
187 NGC 2409 Puppis 7.3
188 NGC 6819 Cygnus 7.3
189 Collinder 96 Monoceros 7.3
190 NGC 2251 Monoceros 7.3
191 IC 4996 Cygnus 7.3
192 NGC 2482 Puppis 7.3
193 IC 348 Perseus 7.3
194 Collinder 21 Triangulum 7.3
195 NGC 2645 Vela 7.3
196 M103 Cassiopeia 7.4
197 NGC 6200 Ara 7.4
198 NGC 4103 Crux 7.4
199 NGC 4349 Crux 7.4
200 NGC 3330 Vela 7.4

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