| Messier 5 | |
|---|---|
 Globular cluster Messier 5 in Serpens | |
| Observation data (J2000 epoch) | |
| Class | V[1] |
| Constellation | Serpens |
| Right ascension | 15h 18m 33.22s[2] |
| Declination | +02° 04′ 51.7″[2] |
| Distance | 24.5 kly (7.5 kpc)[3] |
| Apparent magnitude (V) | 5.6[4] |
| Apparent dimensions (V) | 23′.0 |
| Physical characteristics | |
| Mass | 8.57×105[5] M☉ |
| Radius | 80 ly |
| Metallicity | = –1.12[6] dex |
| Estimated age | 10.62 Gyr[6] |
| Other designations | NGC 5904, GCl 34[7] |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
Messier 5 or M5 (also designated NGC 5904) is a globular cluster in the constellation Serpens. It was discovered by Gottfried Kirch in 1702.
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