Cepheus, the King of Ethiopia (Cep)
The constellation of Cepheus, the King of Ethiopia, is best viewed in Fall during the month of October. It's brightest star is Alderamin at magnitude 2.45. The boundary of the Cepheus constellation contains 3 stars that host known exoplanets.
Orange hypergiant RW Cephei is the 5th largest known star in the universe at 1,500 times the size of the Sun.
- King of Ethiopia
- Constellation Family:
- Best viewing month*:
- Circumpolar** (N=northern, S=southern):
- Right Ascension (avg):
- 22h 25m
- Declination (avg):
- 72° 34'
- Brightest star:
- Alderamin (2.45m)
- Stars with planets:
- Triple star systems:
- X-ray stars:
- 4 (2 binaries) stars
- Barium star; 5 protostars
* For southern latitudes, flip the season listed. For example, if a constellation is listed as best viewed in the summer in the month of July, in the southern hemisphere the constellation would be best viewed in the winter in January and would be upside-down.
** Circumpolar constellations are visible year-round in the hemisphere listed (and not at all in the opposite).
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