The Brightest Open Clusters in the Sky

Name Constellation Magnitude
Name Constellation Magnitude
1 C41 Taurus 0.5
2 Collinder 173 Puppis 0.6
3 Orion's Belt Orion 0.6
4 Antares Cluster Scorpius 1.0
5 Alpha Persei Cluster Perseus 1.2
6 Collinder 39 Perseus 1.2
7 M45 Taurus 1.6
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 Omicron Canis Minorum Cluster Canis Major 2.6
15 NGC 6231 Scorpius 2.6
16 Lambda Orionis Cluster Orion 2.8
17 Collinder 65 Orion 3.0
18 Melotte 186 Ophiuchus 3.0
19 NGC 3532 Carina 3.0
20 Collinder 359 Ophiuchus 3.0
21 M44 Cancer 3.1
22 M7 Scorpius 3.3
23 Tuft in the Tail of the Dog Canis Major 3.5
24 Collinder 132 Canis Major 3.6
25 NGC 869 Perseus 3.7
26 NGC 884 Perseus 3.8
27 NGC 2264 Monoceros 3.9
28 NGC 2232 Monoceros 3.9
29 Collinder 249 Centaurus 4.0
30 M42 Orion 4.0
31 NGC 2362 Canis Major 4.1
32 NGC 1981 Orion 4.2
33 Collinder 62 Auriga 4.2
34 IC 4665 Ophiuchus 4.2
35 NGC 4755 Crux 4.2
36 NGC 3114 Carina 4.2
37 Collinder 464 Camelopardalis 4.2
38 M6 Scorpius 4.2
39 IC 2581 Carina 4.3
40 Collinder 228 Carina 4.4
41 M47 Puppis 4.4
42 M41 Canis Major 4.5
43 IC 2395 Vela 4.6
44 NGC 6633 Ophiuchus 4.6
45 IC 4756 Serpens Cauda 4.6
46 Collinder 106 Monoceros 4.6
47 M25 Sagittarius 4.6
48 M39 Cygnus 4.6
49 NGC 6530 Sagittarius 4.6
50 NGC 2547 Vela 4.7
51 NGC 3293 Carina 4.7
52 NGC 2239 Monoceros 4.8
53 NGC 2244 Monoceros 4.8
54 Collinder 203 Vela 5.0
55 Collinder 234 Carina 5.0
56 Collinder 233 Carina 5.0
57 Collinder 107 Monoceros 5.1
58 M35 Gemini 5.1
59 NGC 6025 Triangulum Australe 5.1
60 NGC 6871 Cygnus 5.2
61 NGC 6193 Ara 5.2
62 M34 Perseus 5.2
63 Collinder 411 Octans 5.3
64 NGC 3766 Centaurus 5.3
65 NGC 5138 Centaurus 5.3
66 NGC 6087 Norma 5.4
67 NGC 6281 Scorpius 5.4
68 Collinder 97 Monoceros 5.4
69 NGC 2281 Auriga 5.4
70 Collinder 230 Carina 5.5
71 M23 Sagittarius 5.5
72 NGC 5662 Centaurus 5.5
73 NGC 6374 Scorpius 5.5
74 NGC 5460 Centaurus 5.6
75 NGC 7686 Andromeda 5.6
76 M37 Auriga 5.6
77 NGC 6067 Norma 5.6
78 NGC 752 Andromeda 5.7
79 NGC 6416 Scorpius 5.7
80 NGC 2477 Puppis 5.8
81 M48 Hydra 5.8
82 M11 Scutum 5.8
83 NGC 6124 Scorpius 5.8
84 NGC 6250 Ara 5.9
85 Collinder 29 Perseus 5.9
86 M50 Monoceros 5.9
87 NGC 2169 Orion 5.9
88 NGC 5281 Centaurus 5.9
89 M21 Sagittarius 5.9
90 M17 Sagittarius 6.0
91 NGC 5316 Centaurus 6.0
92 M36 Auriga 6.0
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 NGC 6605 Serpens Cauda 6.0
98 NGC 6322 Scorpius 6.0
99 NGC 7160 Cepheus 6.1
100 NGC 1746 Taurus 6.1
101 Collinder 202 Vela 6.1
102 NGC 2669 Vela 6.1
103 Collinder 350 Ophiuchus 6.1
104 M46 Puppis 6.1
105 M93 Puppis 6.2
106 NGC 1545 Perseus 6.2
107 NGC 6940 Vulpecula 6.3
108 NGC 2546 Puppis 6.3
109 Collinder 394 Sagittarius 6.3
110 NGC 5617 Centaurus 6.3
111 M20 Sagittarius 6.3
112 NGC 1528 Perseus 6.4
113 NGC 1647 Taurus 6.4
114 NGC 457 Cassiopeia 6.4
115 NGC 7243 Lacerta 6.4
116 Collinder 91 Monoceros 6.4
117 NGC 6242 Scorpius 6.4
118 Collinder 367 Sagittarius 6.4
119 NGC 1662 Orion 6.4
120 M38 Auriga 6.4
121 IC 1805 Cassiopeia 6.5
122 NGC 2354 Canis Major 6.5
123 NGC 654 Cassiopeia 6.5
124 NGC 2539 Puppis 6.5
125 NGC 5822 Lupus 6.5
126 NGC 2527 Puppis 6.5
127 NGC 6604 Serpens Cauda 6.5
128 IC 1848 Cassiopeia 6.5
129 NGC 129 Cassiopeia 6.5
130 Collinder 316 Scorpius 6.6
131 NGC 6169 Norma 6.6
132 NGC 3572 Carina 6.6
133 NGC 1444 Perseus 6.6
134 M29 Cygnus 6.6
135 NGC 3324 Carina 6.7
136 NGC 6167 Norma 6.7
137 NGC 2423 Puppis 6.7
138 Collinder 197 Vela 6.7
139 NGC 1027 Cassiopeia 6.7
140 NGC 7789 Cassiopeia 6.7
141 NGC 2129 Gemini 6.7
142 NGC 6709 Aquila 6.7
143 NGC 2343 Monoceros 6.7
144 Collinder 336 Scorpius 6.7
145 NGC 1342 Perseus 6.7
146 NGC 2175 Orion 6.8
147 IC 1369 Cygnus 6.8
148 NGC 6811 Cygnus 6.8
149 Collinder 232 Carina 6.8
150 M18 Sagittarius 6.9
151 M52 Cassiopeia 6.9
152 NGC 2439 Puppis 6.9
153 NGC 1502 Camelopardalis 6.9
154 Collinder 299 Norma 6.9
155 IC 4651 Ara 6.9
156 M67 Cancer 6.9
157 NGC 4609 Crux 6.9
158 Collinder 241 Carina 6.9
159 Collinder 36 Cassiopeia 7.0
160 Collinder 231 Carina 7.0
161 NGC 7063 Cygnus 7.0
162 NGC 1857 Auriga 7.0
163 Collinder 401 Aquila 7.0
164 NGC 225 Cassiopeia 7.0
165 NGC 1582 Perseus 7.0
166 Collinder 111 Monoceros 7.0
167 NGC 2571 Puppis 7.0
168 NGC 1807 Taurus 7.0
169 Collinder 155 Puppis 7.1
170 Collinder 258 Crux 7.1
171 NGC 663 Cassiopeia 7.1
172 NGC 6823 Vulpecula 7.1
173 NGC 2353 Monoceros 7.1
174 NGC 2335 Monoceros 7.2
175 NGC 4463 Musca 7.2
176 NGC 6134 Norma 7.2
177 NGC 7380 Cepheus 7.2
178 NGC 7082 Cygnus 7.2
179 NGC 2910 Vela 7.2
180 NGC 6425 Scorpius 7.2
181 IC 5146 Cygnus 7.2
182 NGC 6178 Scorpius 7.2
183 NGC 2360 Canis Major 7.2
184 NGC 6208 Ara 7.2
185 IC 348 Perseus 7.3
186 IC 4996 Cygnus 7.3
187 Collinder 96 Monoceros 7.3
188 NGC 2482 Puppis 7.3
189 NGC 6819 Cygnus 7.3
190 Collinder 21 Triangulum 7.3
191 NGC 2251 Monoceros 7.3
192 NGC 2645 Vela 7.3
193 NGC 4103 Crux 7.4
194 M103 Cassiopeia 7.4
195 NGC 6200 Ara 7.4
196 NGC 2396 Puppis 7.4
197 NGC 4349 Crux 7.4
198 NGC 6910 Cygnus 7.4
199 IC 2488 Vela 7.4
200 NGC 2384 Canis Major 7.4

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

Color scheme