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 Coma Star Cluster Coma Berenices 1.8
9 Collinder 256 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 Brocchi's Cluster Vulpecula 3.6
26 Collinder 132 Canis Major 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 Collinder 464 Camelopardalis 4.2
41 NGC 1981 Orion 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 Melotte 227 Octans 5.3
67 Collinder 411 Octans 5.3
68 Collinder 97 Monoceros 5.4
69 NGC 6281 Scorpius 5.4
70 NGC 6087 Norma 5.4
71 NGC 2281 Auriga 5.4
72 M23 Sagittarius 5.5
73 Collinder 230 Carina 5.5
74 NGC 6374 Scorpius 5.5
75 Collinder 334 Scorpius 5.5
76 NGC 5662 Centaurus 5.5
77 M37 Auriga 5.6
78 NGC 7686 Andromeda 5.6
79 NGC 6067 Norma 5.6
80 NGC 5460 Centaurus 5.6
81 NGC 752 Andromeda 5.7
82 NGC 6416 Scorpius 5.7
83 Collinder 89 Gemini 5.7
84 NGC 6882 Vulpecula 5.7
85 M11 Scutum 5.8
86 M48 Hydra 5.8
87 NGC 6124 Scorpius 5.8
88 NGC 2477 Puppis 5.8
89 M21 Sagittarius 5.9
90 M50 Monoceros 5.9
91 NGC 2169 Orion 5.9
92 NGC 5281 Centaurus 5.9
93 Collinder 29 Perseus 5.9
94 NGC 6250 Ara 5.9
95 M16 Serpens Cauda 6.0
96 M17 Sagittarius 6.0
97 M36 Auriga 6.0
98 NGC 6322 Scorpius 6.0
99 NGC 6605 Serpens Cauda 6.0
100 NGC 3228 Vela 6.0
101 NGC 2301 Monoceros 6.0
102 NGC 5316 Centaurus 6.0
103 M46 Puppis 6.1
104 NGC 2669 Vela 6.1
105 NGC 884 Perseus 6.1
106 NGC 7160 Cepheus 6.1
107 Collinder 350 Ophiuchus 6.1
108 NGC 1746 Taurus 6.1
109 Collinder 202 Vela 6.1
110 M93 Puppis 6.2
111 NGC 1545 Perseus 6.2
112 M20 Sagittarius 6.3
113 NGC 5617 Centaurus 6.3
114 Collinder 394 Sagittarius 6.3
115 NGC 2546 Puppis 6.3
116 NGC 6940 Vulpecula 6.3
117 M38 Auriga 6.4
118 NGC 6242 Scorpius 6.4
119 Collinder 367 Sagittarius 6.4
120 NGC 457 Cassiopeia 6.4
121 NGC 7243 Lacerta 6.4
122 NGC 1528 Perseus 6.4
123 NGC 1647 Taurus 6.4
124 NGC 1662 Orion 6.4
125 Collinder 91 Monoceros 6.4
126 NGC 129 Cassiopeia 6.5
127 NGC 6604 Serpens Cauda 6.5
128 NGC 654 Cassiopeia 6.5
129 NGC 2520 Puppis 6.5
130 NGC 2354 Canis Major 6.5
131 NGC 2539 Puppis 6.5
132 Melotte 15 Cassiopeia 6.5
133 NGC 5822 Lupus 6.5
134 M29 Cygnus 6.6
135 NGC 1444 Perseus 6.6
136 NGC 3572 Carina 6.6
137 Collinder 316 Scorpius 6.6
138 NGC 6169 Norma 6.6
139 NGC 2129 Gemini 6.7
140 NGC 7789 Cassiopeia 6.7
141 NGC 2423 Puppis 6.7
142 NGC 6709 Aquila 6.7
143 NGC 1027 Cassiopeia 6.7
144 NGC 1342 Perseus 6.7
145 NGC 6167 Norma 6.7
146 Collinder 197 Vela 6.7
147 NGC 2343 Monoceros 6.7
148 Collinder 336 Scorpius 6.7
149 NGC 3324 Carina 6.7
150 NGC 2175 Orion 6.8
151 Collinder 232 Carina 6.8
152 IC 1848 Cassiopeia 6.8
153 NGC 6811 Cygnus 6.8
154 M18 Sagittarius 6.9
155 M52 Cassiopeia 6.9
156 M67 Cancer 6.9
157 IC 4651 Ara 6.9
158 Collinder 241 Carina 6.9
159 NGC 1502 Camelopardalis 6.9
160 Collinder 299 Norma 6.9
161 NGC 2439 Puppis 6.9
162 NGC 4609 Crux 6.9
163 Collinder 36 Cassiopeia 7.0
164 NGC 225 Cassiopeia 7.0
165 NGC 1582 Perseus 7.0
166 NGC 1807 Taurus 7.0
167 Collinder 231 Carina 7.0
168 NGC 2571 Puppis 7.0
169 NGC 1857 Auriga 7.0
170 NGC 7063 Cygnus 7.0
171 Collinder 401 Aquila 7.0
172 Collinder 111 Monoceros 7.0
173 NGC 6823 Vulpecula 7.1
174 NGC 663 Cassiopeia 7.1
175 NGC 2467 Puppis 7.1
176 Melotte 71 Puppis 7.1
177 Collinder 155 Puppis 7.1
178 Collinder 258 Crux 7.1
179 NGC 2353 Monoceros 7.1
180 NGC 6134 Norma 7.2
181 NGC 2360 Canis Major 7.2
182 NGC 7380 Cepheus 7.2
183 NGC 4463 Musca 7.2
184 NGC 2910 Vela 7.2
185 NGC 6208 Ara 7.2
186 NGC 2335 Monoceros 7.2
187 NGC 6178 Scorpius 7.2
188 NGC 6425 Scorpius 7.2
189 NGC 7082 Cygnus 7.2
190 NGC 2409 Puppis 7.3
191 NGC 6819 Cygnus 7.3
192 Collinder 96 Monoceros 7.3
193 NGC 2251 Monoceros 7.3
194 IC 4996 Cygnus 7.3
195 NGC 2482 Puppis 7.3
196 IC 348 Perseus 7.3
197 Collinder 21 Triangulum 7.3
198 NGC 2645 Vela 7.3
199 M103 Cassiopeia 7.4
200 NGC 6200 Ara 7.4

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