Mythology
King Cepheus of Ethiopia, husband of Cassiopeia and father of Andromeda. He was placed among the stars alongside his family after the Perseus myth.
Observing Highlights
Contains the famous variable star Delta Cephei, prototype of Cepheid variables used to measure cosmic distances. Also home to the Garnet Star (Mu Cephei), one of the reddest naked-eye stars.
Main Stars
20
Main Stars
20
2.44 mag
196.6″
B: 11.5
A8Vn
3.21 mag
1.8″
B: 7.3
K1III
3.23 mag
13.5″
B: 8.6
B1V
HIP 109492; Zeta Cep; 21 Cep
3.35 mag
K1Ib
HIP 102422; Eta Cep; 3 Cep
3.43 mag
42.4″
B: 11.3
K0IV
HIP 112724; Iota Cep; 32 Cep
3.52 mag
K0- III
HIP 110991; Delta Cep; 27 Cep
3.75 mag
3.5 - 4.4
DCEP
F5Ib
HIP 107259; Mu Cep
4.08 mag
19.5″
B: 12.3
M2-Ia
HIP 109857; Epsilon Cep; 23 Cep
4.19 mag
118.1″
B: 9.2
F0IV
HIP 101093; Theta Cep; 2 Cep
4.22 mag
A7III
4.25 mag
K2II-III
HIP 107418; Nu Cep; 10 Cep
4.29 mag
A2Ia
4.29 mag
8.1″
B: 6.4
A3/6Vm
HIP 99255; Kappa Cep; 1 Cep
4.39 mag
7.3″
B: 8.3
B9III
HIP 114222; Pi Cep; 33 Cep
4.41 mag
1.1″
B: 6.8
G2III
4.51 mag
48.4″
B: 9.9
F8IV-V
HIP 107119; 11 Cep
4.56 mag
K1III
4.71 mag
K4III
HIP 106801; 9 Cep
4.73 mag
35.0″
B: 10.2
B2Ib
4.74 mag
3.9″
B: 9.6
K3III
Double Stars
15
Double Stars
15
6.98 mag
13.7″
B: 7.5
F6IV-V
5.71 mag
17.6″
B: 6.4
B6IV-V
5.66 mag
4.6″
B: 9.3
M1Ibep+B2pe+B3V
HIP 99255; Kappa Cep; 1 Cep
4.39 mag
7.3″
B: 8.3
B9III
6.19 mag
4.7″
B: 7.0
F5V
HIP 115088; 34 Cep
4.75 mag
3.4″
B: 7.3
K0III
HIP 107259; Mu Cep
4.08 mag
19.5″
B: 12.3
M2-Ia
4.29 mag
8.1″
B: 6.4
A3/6Vm
6.08 mag
28.8″
B: 7.9
K0II-III+A3V
5.49 mag
4.6″
B: 9.2
M1III+F7IV
6.34 mag
9.5″
B: 9.2
A0V
HIP 110991; Delta Cep; 27 Cep
3.75 mag
3.5 - 4.4
DCEP
F5Ib
5.50 mag
14.8″
B: 8.6
F2V
3.23 mag
13.5″
B: 8.6
B1V
5.95 mag
20.3″
B: 10.7
A7III-IV
Variable Stars
4
Variable Stars
4
Deep Sky Objects
30
Deep Sky Objects
30
Open Cluster
(11)
Galaxy
(9)
Planetary Nebula
(5)
11.6 mag
0.6
— mag
2.
— mag
1.3
13.0 mag
0.3
15.0 mag
0.6
Emission Nebula
(4)
Reflection Nebula
(1)
6.8 mag
18