Constellation
The only constellation split into two separate regions, representing a serpent held by Ophiuchus.
| Type | Constellation |
|---|---|
| Area of sky | 637 sq° |
| Brightest star | Unukalhai |
| Brightest star magnitude | mag 2.62 |
| Hemisphere | Northern |
| Zodiac constellation | No |
| Discovered | 150 |
A constellation is a pattern drawn on the sky rather than a physical grouping: its stars are usually unrelated and sit at wildly different distances, just lined up as seen from Earth.
Serpens covers 637 square degrees of sky, which is 1.5 percent of the whole celestial sphere.
That makes it the 23rd largest of the 88 constellations the International Astronomical Union recognises.
It sits in the northern sky.
Its brightest star reaches magnitude 2.62, bright enough to pick out with the naked eye under a dark sky.
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