List of largest star clusters
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Below is a list of the largest known star clusters, ordered by diameter in light years, above the size of 75 light years.
List
 |
| Cluster Name | Diameter (Light Years) | Notes |
|---|---|---|
| Messier 54 | 306[1] | |
| Messier 11 (Wild Duck Cluster) | 190[2] | |
| Messier 2 | 174.4[3] | |
| Omega Centauri | 172 ± 12[4] | |
| Messier 13 | 168[5] | |
| Messier 15 | 166[6] | |
| Messier 75 | 126[7] | |
| Messier 22 | 100 ± 10[8] | |
| Messier 14 | 100[8] | |
| Messier 62 | 98[9] | |
| Messier 55 | 96[10] | |
| Messier 69 | 90[11] | |
| Messier 9 | 90[12] | |
| Messier 56 | 84[13] | |
| Messier 10 | 83.2[14] | |
| Messier 46 | 75.6[15] |
References
- ^ From trigonometry: radius = distance × sin( diameter_angle / 2 ) = 153 ly.
- ^ Santos, J. F. C. Jr.; et al. (October 2005), "Structure and stellar content analysis of the open cluster M 11 with 2MASS photometry", Astronomy and Astrophysics, 442 (1): 201–209, arXiv:astro-ph/0507216, Bibcode:2005A&A...442..201S, doi:10.1051/0004-6361:20053378, S2CID 15323948.
- ^ distance × sin( diameter_angle / 2 ) = 87.3 ly. radius
- ^ distance × sin(diameter_angle / 2), using distance of 5 kpc and angle 36.3′, = 86 ± 6 ly radius
- ^ distance × sin(diameter_angle / 2) = 84 ly radius
- ^ distance × sin( diameter_angle / 2 ) = 88 ly radius
- ^ From trigonometry: radius = distance × sin( diameter_angle / 2 ) = 67 ly.
- ^ a b From trigonometry: radius = distance × sin( diameter_angle / 2 ) = 50 ly
- ^ distance × sin( diameter_angle / 2 ) = 49 ly. radius
- ^ From trigonometry: radius = distance × sin( diameter_angle / 2 ) = 17,600 × sin(19′/2) = 48.6 ly.
- ^ From trigonometry: distance × sin( diameter_angle / 2 ) = 28,700 × 0.00157 = 45 ly. radius
- ^ Boyles, J.; Lorimer, D. R.; Turk, P. J.; Mnatsakanov, R.; Lynch, R. S.; Ransom, S. M.; Freire, P. C.; Belczynski, K. (2011-11-20). "YOUNG RADIO PULSARS IN GALACTIC GLOBULAR CLUSTERS". The Astrophysical Journal. 742 (1): 51. doi:10.1088/0004-637X/742/1/51. ISSN 0004-637X.
- ^ From trigonometry: radius = distance × sin( diameter_angle / 2 ) = 32,900 × sin(8.8′/2) = 42.1 ly.
- ^ distance × sin( diameter_angle / 2 ) = 41.6 ly. radius
- ^ Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (June 2007). "Towards absolute scales for the radii and masses of open clusters". Astronomy & Astrophysics. 468 (1): 151–161. doi:10.1051/0004-6361:20077073. ISSN 0004-6361.