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| Abbreviation: Ser |
| English Name: The Snake’s Head |
| Genitive: Unukalhai |
| Hemisphere: Northern and Southern Hemisphere. (Bold means the more area in square feet in Northern Hemisphere.) |
| Location: Between the constellations of Ophiuchus and Boötes. |
| Visible between latitudes: +80 and -80 degrees |
| Best season: Summer |
| Seen in three seasons: Spring, Summer, & Autumn |
| Best seen in: June (map) |
| Seen between: March and September |
| Right Ascension (RA): 16 hour |
| Declination (DEC): -10 degrees |
| Area (square degrees): Serpens Caput: 428 square degrees Serpens Cauda: 208 square degrees Total: 637 square degrees (23rd) |
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Serpens Caput (The Snake’s Head)
- The constellation is divided into two parts by Ophiuchus, the snake bearer: Serpens Caput, representing the serpent’s head, and Serpens Cauda, the serpent’s tail.
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Messier Objects in Serpens Caput
| M5 – Globular Cluster, it is one of the oldest globular clusters in the Milky Way galaxy. |
| . |
More objects in Serpens Caput
| Select Catalog | No of Objects |
| Barnard (B) | 0x object |
| Caldwell (C) | 0x object |
| Collinder (Cr) | 0x object |
| New General Catalogue (NGC) | 71x objects |
| Index Catalogue (IC) | 69x objects |
| Sharpless (Sh2) | 2x objects |
Features of Interest
- NGC 5921 is located in Serpens Caput, or the Serpent’s Head.
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Named Stars
- Unukalhai
- more list of stars in Serpens
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Planetarium / Constellation Map
| Live constellation visible from the UK :- Planetarium (Serpens Caput) | Best Seen in: June (map) | Seen between: March and September |
IAU Sky Chart: Serpens Caput
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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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Back to …Constellation Names
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