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| Abbreviation: Her (Hercules) |
| English Name: The Hercules |
| Genitive: Rassalgethi |
| Hemisphere: Northern Hemisphere |
| Location: Between the constellations of Lyra and Corona Borealis. |
| Visible between latitudes: +90 and -50 degrees |
| Best season: Summer |
| Seen in three seasons: Spring, Summer, and Autumn |
| Best seen in: Early July (map) |
| Seen between: April and December |
| Right Ascension (RA): 17 hour |
| Declination (DEC): +30 degrees |
| Area (square degrees): 1,225 square degrees (5th) |
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Hercules (The Hercules)
- A common form found in modern star charts uses the four-sided surrounded formed known as the “Keystone” asterism.
o - Hercules contains two bright globular clusters: M13 – brightest globular cluster in the northern hemisphere, and M92.
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Messier Objects in Hercules
- Messier 13
Visible to both the naked eye and binoculars under very good condition, is a globular cluster of the 6th magnitude that contains more than 300,000 stars; sometimes called the Great Globular Cluster or the Hercules Cluster.
- Messier 92
Very Large Open Cluster, almost the diameter of the Full Moon – hazy spot in binoculars, but resolves into a large numbers of stars by a telescope.
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More objects in Hercules
| Select Catalog | No of Objects |
| Barnard (B) | 0x object |
| Caldwell (C) | 0x object |
| Collinder (Cr) | 0x object |
| New General Catalogue (NGC) | 214x objects |
| Index Catalogue (IC) | 96x objects |
| Sharpless (Sh2) | 1x object |
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Features of Interest
- The star Rasalgethi is a strangely colourful, multiple star; there is a giant red star with a bright green companion, and this star has its own tiny orange companion as resembling from stars as a `traffic light`
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Named Stars
- Rasalgethi (Alpha 1 Her)
- Kornephoros (Beta Her)
- Sarin (Delta Her)
- Marfik (Kappa Her)
- Maasym (Lambda Her)
- Kajam (Omega Her)
- more list of stars in Hercules.
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Planetarium / Constellation Map
| Live constellation visible from the UK :- Planetarium (Hercules) | Best Seen in: Early July (map) | Seen between: April and December |
IAU Sky Chart: Hercules
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Constellations – Visible from the UK
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Parts visible from the UK
| Antlia | Columba | Eridanus | Fornax | Microscopium | ||
| Piscis Austrinus | Puppis | Pyxis | Sagittarius | Scorpius | ||
| Sculptor |
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Constellations: Southern Celestial Hemisphere
…..– never seen from the UK
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