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 NGC 3532 Carina 3.0
19 Melotte 186 Ophiuchus 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 Collinder 464 Camelopardalis 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 NGC 1981 Orion 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 4756 Serpens Cauda 4.6
44 Collinder 106 Monoceros 4.6
45 M25 Sagittarius 4.6
46 IC 2395 Vela 4.6
47 NGC 6530 Sagittarius 4.6
48 M39 Cygnus 4.6
49 NGC 6633 Ophiuchus 4.6
50 NGC 3293 Carina 4.7
51 NGC 2547 Vela 4.7
52 NGC 2244 Monoceros 4.8
53 NGC 2239 Monoceros 4.8
54 Collinder 234 Carina 5.0
55 Collinder 233 Carina 5.0
56 Collinder 203 Vela 5.0
57 M35 Gemini 5.1
58 NGC 6025 Triangulum Australe 5.1
59 Collinder 107 Monoceros 5.1
60 NGC 6193 Ara 5.2
61 M34 Perseus 5.2
62 NGC 6871 Cygnus 5.2
63 Collinder 411 Octans 5.3
64 NGC 3766 Centaurus 5.3
65 NGC 5138 Centaurus 5.3
66 NGC 6281 Scorpius 5.4
67 Collinder 97 Monoceros 5.4
68 NGC 2281 Auriga 5.4
69 NGC 6087 Norma 5.4
70 Collinder 230 Carina 5.5
71 NGC 5662 Centaurus 5.5
72 M23 Sagittarius 5.5
73 NGC 6374 Scorpius 5.5
74 M37 Auriga 5.6
75 NGC 6067 Norma 5.6
76 NGC 5460 Centaurus 5.6
77 NGC 7686 Andromeda 5.6
78 NGC 6416 Scorpius 5.7
79 NGC 752 Andromeda 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 Collinder 29 Perseus 5.9
85 M50 Monoceros 5.9
86 NGC 5281 Centaurus 5.9
87 M21 Sagittarius 5.9
88 NGC 6250 Ara 5.9
89 NGC 2169 Orion 5.9
90 M17 Sagittarius 6.0
91 IC 4703 Serpens Cauda 6.0
92 M36 Auriga 6.0
93 NGC 2301 Monoceros 6.0
94 M16 Serpens Cauda 6.0
95 NGC 3228 Vela 6.0
96 NGC 6605 Serpens Cauda 6.0
97 NGC 6322 Scorpius 6.0
98 Collinder 367 Sagittarius 6.0
99 NGC 5316 Centaurus 6.0
100 Collinder 202 Vela 6.1
101 NGC 1746 Taurus 6.1
102 NGC 2669 Vela 6.1
103 Collinder 350 Ophiuchus 6.1
104 NGC 7160 Cepheus 6.1
105 M46 Puppis 6.1
106 NGC 1545 Perseus 6.2
107 M93 Puppis 6.2
108 NGC 6940 Vulpecula 6.3
109 NGC 2546 Puppis 6.3
110 NGC 5617 Centaurus 6.3
111 Collinder 394 Sagittarius 6.3
112 M20 Sagittarius 6.3
113 NGC 7243 Lacerta 6.4
114 NGC 1662 Orion 6.4
115 NGC 6242 Scorpius 6.4
116 NGC 1528 Perseus 6.4
117 Collinder 91 Monoceros 6.4
118 NGC 1647 Taurus 6.4
119 NGC 457 Cassiopeia 6.4
120 M38 Auriga 6.4
121 NGC 2354 Canis Major 6.5
122 NGC 2539 Puppis 6.5
123 NGC 5822 Lupus 6.5
124 IC 1848 Cassiopeia 6.5
125 NGC 654 Cassiopeia 6.5
126 NGC 2527 Puppis 6.5
127 NGC 6604 Serpens Cauda 6.5
128 IC 1805 Cassiopeia 6.5
129 NGC 129 Cassiopeia 6.5
130 NGC 3572 Carina 6.6
131 NGC 6169 Norma 6.6
132 Collinder 316 Scorpius 6.6
133 M29 Cygnus 6.6
134 NGC 1444 Perseus 6.6
135 NGC 6167 Norma 6.7
136 NGC 1342 Perseus 6.7
137 NGC 2423 Puppis 6.7
138 NGC 7789 Cassiopeia 6.7
139 Collinder 197 Vela 6.7
140 NGC 6709 Aquila 6.7
141 NGC 2343 Monoceros 6.7
142 Collinder 336 Scorpius 6.7
143 NGC 3324 Carina 6.7
144 NGC 1027 Cassiopeia 6.7
145 NGC 2129 Gemini 6.7
146 NGC 6811 Cygnus 6.8
147 IC 1369 Cygnus 6.8
148 NGC 2175 Orion 6.8
149 Collinder 232 Carina 6.8
150 M18 Sagittarius 6.9
151 M52 Cassiopeia 6.9
152 Collinder 299 Norma 6.9
153 NGC 1502 Camelopardalis 6.9
154 IC 4651 Ara 6.9
155 NGC 4609 Crux 6.9
156 Collinder 241 Carina 6.9
157 NGC 2439 Puppis 6.9
158 M67 Cancer 6.9
159 NGC 1807 Taurus 7.0
160 NGC 225 Cassiopeia 7.0
161 NGC 2571 Puppis 7.0
162 Collinder 111 Monoceros 7.0
163 Collinder 401 Aquila 7.0
164 NGC 1857 Auriga 7.0
165 NGC 1582 Perseus 7.0
166 NGC 7063 Cygnus 7.0
167 Collinder 36 Cassiopeia 7.0
168 Collinder 231 Carina 7.0
169 NGC 663 Cassiopeia 7.1
170 NGC 2353 Monoceros 7.1
171 Collinder 155 Puppis 7.1
172 Collinder 258 Crux 7.1
173 NGC 6823 Vulpecula 7.1
174 NGC 6134 Norma 7.2
175 NGC 7380 Cepheus 7.2
176 NGC 2910 Vela 7.2
177 NGC 6425 Scorpius 7.2
178 NGC 7082 Cygnus 7.2
179 NGC 6178 Scorpius 7.2
180 IC 5146 Cygnus 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 2251 Monoceros 7.3
186 NGC 6819 Cygnus 7.3
187 Collinder 21 Triangulum 7.3
188 NGC 2482 Puppis 7.3
189 IC 4996 Cygnus 7.3
190 Collinder 96 Monoceros 7.3
191 IC 348 Perseus 7.3
192 NGC 2645 Vela 7.3
193 NGC 6200 Ara 7.4
194 NGC 4349 Crux 7.4
195 NGC 2396 Puppis 7.4
196 M103 Cassiopeia 7.4
197 IC 2488 Vela 7.4
198 NGC 6910 Cygnus 7.4
199 NGC 2384 Canis Major 7.4
200 NGC 3330 Vela 7.4

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

Color scheme