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 C41 Taurus 1.0
4 Antares Cluster Scorpius 1.0
5 Alpha Persei Cluster Perseus 1.2
6 Collinder 39 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 NGC 1980 Orion 2.5
13 IC 2391 Vela 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 359 Ophiuchus 3.0
19 NGC 3532 Carina 3.0
20 Melotte 186 Ophiuchus 3.0
21 Collinder 65 Orion 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 IC 2581 Carina 4.0
29 M42 Orion 4.0
30 IC 2395 Vela 4.0
31 Collinder 249 Centaurus 4.0
32 NGC 2264 Monoceros 4.1
33 NGC 2362 Canis Major 4.1
34 NGC 3114 Carina 4.2
35 Collinder 62 Auriga 4.2
36 IC 4665 Ophiuchus 4.2
37 NGC 2232 Monoceros 4.2
38 Collinder 464 Camelopardalis 4.2
39 NGC 4755 Crux 4.2
40 M6 Scorpius 4.2
41 NGC 1981 Orion 4.2
42 NGC 869 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 Collinder 106 Monoceros 4.6
48 IC 4756 Serpens Cauda 4.6
49 M39 Cygnus 4.6
50 NGC 6633 Ophiuchus 4.6
51 NGC 6530 Sagittarius 4.6
52 NGC 2547 Vela 4.7
53 NGC 3293 Carina 4.7
54 NGC 2244 Monoceros 4.8
55 NGC 2239 Monoceros 4.8
56 Collinder 233 Carina 5.0
57 Collinder 203 Vela 5.0
58 Collinder 234 Carina 5.0
59 Collinder 107 Monoceros 5.1
60 M35 Gemini 5.1
61 NGC 6025 Triangulum Australe 5.1
62 M34 Perseus 5.2
63 NGC 6193 Ara 5.2
64 NGC 6871 Cygnus 5.2
65 Collinder 411 Octans 5.3
66 NGC 3766 Centaurus 5.3
67 Collinder 97 Monoceros 5.4
68 NGC 2281 Auriga 5.4
69 NGC 6281 Scorpius 5.4
70 NGC 6087 Norma 5.4
71 M23 Sagittarius 5.5
72 Collinder 230 Carina 5.5
73 NGC 5662 Centaurus 5.5
74 NGC 6374 Scorpius 5.5
75 M37 Auriga 5.6
76 NGC 5460 Centaurus 5.6
77 NGC 7686 Andromeda 5.6
78 NGC 6067 Norma 5.6
79 NGC 752 Andromeda 5.7
80 NGC 6885 Vulpecula 5.7
81 Collinder 89 Gemini 5.7
82 NGC 6416 Scorpius 5.7
83 NGC 6124 Scorpius 5.8
84 NGC 2477 Puppis 5.8
85 M48 Hydra 5.8
86 M11 Scutum 5.8
87 NGC 6250 Ara 5.9
88 M50 Monoceros 5.9
89 M21 Sagittarius 5.9
90 NGC 5281 Centaurus 5.9
91 Collinder 29 Perseus 5.9
92 NGC 2169 Orion 5.9
93 M17 Sagittarius 6.0
94 M36 Auriga 6.0
95 NGC 6605 Serpens Cauda 6.0
96 M16 Serpens Cauda 6.0
97 NGC 5316 Centaurus 6.0
98 NGC 2301 Monoceros 6.0
99 NGC 3228 Vela 6.0
100 NGC 6322 Scorpius 6.0
101 IC 4703 Serpens Cauda 6.0
102 NGC 7160 Cepheus 6.1
103 NGC 1746 Taurus 6.1
104 Collinder 202 Vela 6.1
105 NGC 2669 Vela 6.1
106 M46 Puppis 6.1
107 NGC 884 Perseus 6.1
108 Collinder 350 Ophiuchus 6.1
109 NGC 1545 Perseus 6.2
110 M93 Puppis 6.2
111 Collinder 394 Sagittarius 6.3
112 NGC 2546 Puppis 6.3
113 NGC 6940 Vulpecula 6.3
114 M20 Sagittarius 6.3
115 NGC 5617 Centaurus 6.3
116 Collinder 367 Sagittarius 6.4
117 NGC 6242 Scorpius 6.4
118 NGC 1662 Orion 6.4
119 NGC 7243 Lacerta 6.4
120 NGC 1528 Perseus 6.4
121 NGC 1647 Taurus 6.4
122 NGC 457 Cassiopeia 6.4
123 Collinder 91 Monoceros 6.4
124 M38 Auriga 6.4
125 NGC 6604 Serpens Cauda 6.5
126 NGC 2354 Canis Major 6.5
127 NGC 2539 Puppis 6.5
128 IC 1805 Cassiopeia 6.5
129 NGC 129 Cassiopeia 6.5
130 NGC 5822 Lupus 6.5
131 NGC 2527 Puppis 6.5
132 NGC 654 Cassiopeia 6.5
133 Collinder 316 Scorpius 6.6
134 NGC 6169 Norma 6.6
135 NGC 1444 Perseus 6.6
136 NGC 3572 Carina 6.6
137 M29 Cygnus 6.6
138 Collinder 197 Vela 6.7
139 Collinder 336 Scorpius 6.7
140 NGC 2343 Monoceros 6.7
141 NGC 2129 Gemini 6.7
142 NGC 3324 Carina 6.7
143 NGC 1027 Cassiopeia 6.7
144 NGC 6167 Norma 6.7
145 NGC 6709 Aquila 6.7
146 NGC 1342 Perseus 6.7
147 NGC 7789 Cassiopeia 6.7
148 NGC 2423 Puppis 6.7
149 NGC 6811 Cygnus 6.8
150 Collinder 232 Carina 6.8
151 NGC 2175 Orion 6.8
152 IC 1848 Cassiopeia 6.8
153 M52 Cassiopeia 6.9
154 NGC 4609 Crux 6.9
155 IC 4651 Ara 6.9
156 Collinder 241 Carina 6.9
157 NGC 2439 Puppis 6.9
158 M67 Cancer 6.9
159 Collinder 299 Norma 6.9
160 NGC 1502 Camelopardalis 6.9
161 M18 Sagittarius 6.9
162 Collinder 111 Monoceros 7.0
163 NGC 225 Cassiopeia 7.0
164 NGC 1582 Perseus 7.0
165 NGC 7063 Cygnus 7.0
166 Collinder 231 Carina 7.0
167 NGC 1807 Taurus 7.0
168 Collinder 36 Cassiopeia 7.0
169 Collinder 401 Aquila 7.0
170 NGC 2571 Puppis 7.0
171 NGC 6595 Sagittarius 7.0
172 NGC 1857 Auriga 7.0
173 Collinder 155 Puppis 7.1
174 Collinder 258 Crux 7.1
175 NGC 663 Cassiopeia 7.1
176 NGC 2467 Puppis 7.1
177 NGC 2353 Monoceros 7.1
178 NGC 6823 Vulpecula 7.1
179 NGC 7082 Cygnus 7.2
180 NGC 6178 Scorpius 7.2
181 NGC 6208 Ara 7.2
182 NGC 2360 Canis Major 7.2
183 NGC 4463 Musca 7.2
184 NGC 2335 Monoceros 7.2
185 NGC 6425 Scorpius 7.2
186 NGC 7380 Cepheus 7.2
187 NGC 6134 Norma 7.2
188 NGC 2910 Vela 7.2
189 NGC 2482 Puppis 7.3
190 Collinder 96 Monoceros 7.3
191 IC 4996 Cygnus 7.3
192 NGC 2251 Monoceros 7.3
193 IC 348 Perseus 7.3
194 NGC 6819 Cygnus 7.3
195 Collinder 21 Triangulum 7.3
196 NGC 2645 Vela 7.3
197 NGC 2384 Canis Major 7.4
198 NGC 3330 Vela 7.4
199 NGC 6910 Cygnus 7.4
200 NGC 4103 Crux 7.4

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EDT

Color scheme