The Great Globular Cluster in Hercules (M13)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 16 arcminutes across.
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From South El Monte , the Great Globular Cluster in Hercules is visible all night. It will become visible at around 21:17 (PDT), 60° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:43, 87° above your northern horizon. It will be lost to dawn twilight at around 04:26, 34° above your north-western horizon.
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Name
The Great Globular Cluster in Hercules (M13)
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Object type
Globular cluster
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Position
| Right ascension: | 16h41m [3] |
| Declination: | +36°27' [3] |
| Constellation: | Hercules |
| Magnitude: | 5.80 (V) [4] 4.45 (J) [3] 3.94 (H) [3] 3.85 (K) [3] |
| Angular dimensions: | 16.5 arcmin |
| Distance: | 7.7 kpc 25.1 klyr [1] |
Derived quantities
| Absolute mag (V): | -8.63 |
Visibility from South El Monte
All times shown in South El Monte local time.
Events
| 02 Jun 2026 | – The Great Globular Cluster in Hercules is well placed |
| 02 Jun 2027 | – The Great Globular Cluster in Hercules is well placed |
| 01 Jun 2028 | – The Great Globular Cluster in Hercules is well placed |
| 02 Jun 2029 | – The Great Globular Cluster in Hercules is well placed |
| 02 Jun 2030 | – The Great Globular Cluster in Hercules is well placed |
| 02 Jun 2031 | – The Great Globular Cluster in Hercules is well placed |
| 01 Jun 2032 | – The Great Globular Cluster in Hercules is well placed |
| 01 Jun 2033 | – The Great Globular Cluster in Hercules is well placed |