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 Alpha Persei Cluster Perseus 1.2
6 Collinder 39 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 Omicron Canis Minorum Cluster Canis Major 2.6
15 NGC 6231 Scorpius 2.6
16 Lambda Orionis Cluster Orion 2.8
17 NGC 2451 Puppis 2.8
18 Collinder 65 Orion 3.0
19 NGC 3532 Carina 3.0
20 Collinder 359 Ophiuchus 3.0
21 Melotte 186 Ophiuchus 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 2395 Vela 4.0
29 M42 Orion 4.0
30 IC 2581 Carina 4.0
31 Collinder 249 Centaurus 4.0
32 NGC 2362 Canis Major 4.1
33 NGC 2264 Monoceros 4.1
34 NGC 4755 Crux 4.2
35 Collinder 464 Camelopardalis 4.2
36 IC 4665 Ophiuchus 4.2
37 NGC 1981 Orion 4.2
38 Collinder 62 Auriga 4.2
39 NGC 3114 Carina 4.2
40 M6 Scorpius 4.2
41 NGC 2232 Monoceros 4.2
42 NGC 869 Perseus 4.3
43 Collinder 228 Carina 4.4
44 M47 Puppis 4.4
45 M41 Canis Major 4.5
46 NGC 6633 Ophiuchus 4.6
47 M25 Sagittarius 4.6
48 Collinder 106 Monoceros 4.6
49 NGC 6530 Sagittarius 4.6
50 IC 4756 Serpens Cauda 4.6
51 M39 Cygnus 4.6
52 NGC 3293 Carina 4.7
53 NGC 2547 Vela 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 6871 Cygnus 5.2
64 NGC 6193 Ara 5.2
65 Collinder 411 Octans 5.3
66 NGC 3766 Centaurus 5.3
67 NGC 6087 Norma 5.4
68 NGC 2281 Auriga 5.4
69 NGC 6281 Scorpius 5.4
70 Collinder 97 Monoceros 5.4
71 NGC 5662 Centaurus 5.5
72 M23 Sagittarius 5.5
73 NGC 6374 Scorpius 5.5
74 Collinder 230 Carina 5.5
75 NGC 7686 Andromeda 5.6
76 M37 Auriga 5.6
77 NGC 6067 Norma 5.6
78 NGC 5460 Centaurus 5.6
79 NGC 6885 Vulpecula 5.7
80 Collinder 89 Gemini 5.7
81 NGC 752 Andromeda 5.7
82 NGC 6416 Scorpius 5.7
83 NGC 6124 Scorpius 5.8
84 M11 Scutum 5.8
85 NGC 2477 Puppis 5.8
86 M48 Hydra 5.8
87 Collinder 29 Perseus 5.9
88 NGC 2169 Orion 5.9
89 NGC 5281 Centaurus 5.9
90 M21 Sagittarius 5.9
91 NGC 6250 Ara 5.9
92 M50 Monoceros 5.9
93 IC 4703 Serpens Cauda 6.0
94 M16 Serpens Cauda 6.0
95 NGC 2301 Monoceros 6.0
96 NGC 3228 Vela 6.0
97 M36 Auriga 6.0
98 NGC 6322 Scorpius 6.0
99 NGC 6605 Serpens Cauda 6.0
100 NGC 5316 Centaurus 6.0
101 M17 Sagittarius 6.0
102 M46 Puppis 6.1
103 Collinder 202 Vela 6.1
104 NGC 1746 Taurus 6.1
105 Collinder 350 Ophiuchus 6.1
106 NGC 884 Perseus 6.1
107 NGC 7160 Cepheus 6.1
108 NGC 2669 Vela 6.1
109 M93 Puppis 6.2
110 NGC 1545 Perseus 6.2
111 NGC 2546 Puppis 6.3
112 NGC 5617 Centaurus 6.3
113 M20 Sagittarius 6.3
114 Collinder 394 Sagittarius 6.3
115 NGC 6940 Vulpecula 6.3
116 M38 Auriga 6.4
117 NGC 7243 Lacerta 6.4
118 Collinder 91 Monoceros 6.4
119 NGC 1528 Perseus 6.4
120 Collinder 367 Sagittarius 6.4
121 NGC 1662 Orion 6.4
122 NGC 1647 Taurus 6.4
123 NGC 6242 Scorpius 6.4
124 NGC 457 Cassiopeia 6.4
125 IC 1805 Cassiopeia 6.5
126 NGC 2354 Canis Major 6.5
127 NGC 2539 Puppis 6.5
128 NGC 654 Cassiopeia 6.5
129 NGC 2527 Puppis 6.5
130 NGC 129 Cassiopeia 6.5
131 NGC 5822 Lupus 6.5
132 NGC 6604 Serpens Cauda 6.5
133 NGC 1444 Perseus 6.6
134 Collinder 316 Scorpius 6.6
135 NGC 3572 Carina 6.6
136 NGC 6169 Norma 6.6
137 M29 Cygnus 6.6
138 NGC 6709 Aquila 6.7
139 Collinder 336 Scorpius 6.7
140 NGC 1342 Perseus 6.7
141 Collinder 197 Vela 6.7
142 NGC 6167 Norma 6.7
143 NGC 7789 Cassiopeia 6.7
144 NGC 2343 Monoceros 6.7
145 NGC 3324 Carina 6.7
146 NGC 1027 Cassiopeia 6.7
147 NGC 2423 Puppis 6.7
148 NGC 2129 Gemini 6.7
149 IC 1848 Cassiopeia 6.8
150 Collinder 232 Carina 6.8
151 NGC 2175 Orion 6.8
152 NGC 6811 Cygnus 6.8
153 NGC 4609 Crux 6.9
154 M67 Cancer 6.9
155 IC 4651 Ara 6.9
156 Collinder 241 Carina 6.9
157 M52 Cassiopeia 6.9
158 NGC 2439 Puppis 6.9
159 Collinder 299 Norma 6.9
160 M18 Sagittarius 6.9
161 NGC 1502 Camelopardalis 6.9
162 Collinder 111 Monoceros 7.0
163 NGC 6595 Sagittarius 7.0
164 NGC 225 Cassiopeia 7.0
165 NGC 1582 Perseus 7.0
166 Collinder 231 Carina 7.0
167 Collinder 401 Aquila 7.0
168 NGC 1807 Taurus 7.0
169 NGC 2571 Puppis 7.0
170 NGC 1857 Auriga 7.0
171 NGC 7063 Cygnus 7.0
172 Collinder 36 Cassiopeia 7.0
173 NGC 2353 Monoceros 7.1
174 Collinder 155 Puppis 7.1
175 NGC 6823 Vulpecula 7.1
176 Collinder 258 Crux 7.1
177 NGC 2467 Puppis 7.1
178 NGC 663 Cassiopeia 7.1
179 NGC 6178 Scorpius 7.2
180 NGC 2910 Vela 7.2
181 NGC 4463 Musca 7.2
182 NGC 6208 Ara 7.2
183 NGC 7082 Cygnus 7.2
184 NGC 6425 Scorpius 7.2
185 NGC 7380 Cepheus 7.2
186 NGC 6134 Norma 7.2
187 NGC 2335 Monoceros 7.2
188 NGC 2360 Canis Major 7.2
189 IC 348 Perseus 7.3
190 Collinder 96 Monoceros 7.3
191 Collinder 21 Triangulum 7.3
192 NGC 2482 Puppis 7.3
193 IC 4996 Cygnus 7.3
194 NGC 6819 Cygnus 7.3
195 NGC 2251 Monoceros 7.3
196 NGC 2645 Vela 7.3
197 NGC 2384 Canis Major 7.4
198 IC 2488 Vela 7.4
199 NGC 4103 Crux 7.4
200 NGC 6910 Cygnus 7.4

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EDT

Color scheme