Mythology
Created by Lacaille in the 18th century to represent a drawing compass. One of the smallest constellations.
Observing Highlights
Contains the Circinus Galaxy, one of the closest Seyfert galaxies, and Alpha Circini, the brightest rapidly oscillating Ap star.
Main Stars
20
Main Stars
20HIP 71908; Alpha Cir
3.19 mag
15.7″
B: 8.5
A7VpSrCrEu Kn
HIP 74824; Beta Cir
4.07 mag
217.6″
B: 13.2
A3V
HIP 75323; Gamma Cir
4.51 mag
0.8″
B: 5.7
B5IV+F8
HIP 74837; Epsilon Cir
4.86 mag
K2.5III
HIP 74778; Delta Cir
5.09 mag
53.9″
B: 12.9
O8.5V
HIP 73129; Theta Cir
5.11 mag
B4Vnpe
HIP 73776; Eta Cir
5.17 mag
G8III
5.20 mag
K2III
5.36 mag
34.7″
B: 10.8
A9V
5.46 mag
5.5″
B: 12.0
O7.5III((f))
5.61 mag
A3Ib
5.67 mag
F7V
5.71 mag
K2III
5.73 mag
1.2″
B: 8.6
B0.5Ve
5.75 mag
K5-M0III
5.75 mag
24.0″
B: 13.5
B1.5III
5.83 mag
28.9″
B: 14.0
K1III
5.85 mag
K3III
HIP 72773
5.87 mag
G3II+B8V
5.91 mag
47.2″
B: 8.6
B2.5Ve
Double Stars
15
Double Stars
15
5.91 mag
47.2″
B: 8.6
B2.5Ve
6.20 mag
6.5″
B: 9.5
K0III
6.04 mag
9.2″
B: 9.9
F7V
HIP 71908; Alpha Cir
3.19 mag
15.7″
B: 8.5
A7VpSrCrEu Kn
6.05 mag
5.8″
B: 15.0
K4II
5.83 mag
28.9″
B: 14.0
K1III
HIP 72121
6.10 mag
69.0″
B: 7.5
B2III
5.36 mag
34.7″
B: 10.8
A9V
5.46 mag
5.5″
B: 12.0
O7.5III((f))
5.75 mag
24.0″
B: 13.5
B1.5III
HIP 74778; Delta Cir
5.09 mag
53.9″
B: 12.9
O8.5V
5.97 mag
41.1″
B: 12.5
F2III
6.30 mag
2.6″
B: 16.6
G2V
HIP 74824; Beta Cir
4.07 mag
217.6″
B: 13.2
A3V
5.73 mag
1.2″
B: 8.6
B0.5Ve