Cepheus
Cep
Rank: #27
588 sq. deg.
Cepheus is a constellation in the deep northern sky, named after Cepheus, a king of Aethiopia in Greek mythology. It is one of the 48 constellations listed by the second century astronomer Ptolemy, and it remains one of the 88 constellations in the modern times. The constellation's brightest star is Alderamin (Alpha Cephei), with an apparent magnitude of 2.5. Delta Cephei is the prototype of an important class of star known as a Cepheid variable.
IAU constellation map showing the boundaries and main stars
Cepheus
| Genitive | Cephei |
| Symbolism | The Cepheus |
| Right ascension | 22h 00m 00s |
| Declination | +70° 00' 00" |
| Area | |
| Area rank | 27 |
| Brightest star | |
| Best visible at 21:00 | Variable |
Deep-Sky Objects Summary
31
Brightest Stars
16
Open Clusters
0
Globular Clusters
9
Galaxies
1
Nebulae
Brightest Stars
| Designation | Name | Apparent magnitude | Right ascension | Declination | Spectral type |
|---|
Galaxies
| Designation | Name | Apparent magnitude | Right ascension | Declination | Type |
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Nebulae
| Designation | Name | Apparent magnitude | Right ascension | Declination | Type |
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