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Corona Borealis

Genitive: Coronae Borealis

Northern 179 sq° CrB

Brightest star: Alphecca

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Mythology

The Northern Crown, representing the crown given by Dionysus to Ariadne, princess of Crete, after she was abandoned by Theseus on the island of Naxos.

Observing Highlights

A distinctive semicircle of stars. Contains R Coronae Borealis, prototype of a rare class of variable stars, and the Abell 2065 galaxy cluster.

Main Stars

20
Alphecca

HIP 76267; Alpha CrB; 5 CrB

2.23 mag A1V
Nusakan

HIP 75695; Beta CrB; 3 CrB

3.68 mag 0.3″ B: 5.2 A8V:SrCrEu
Gamma CrB

HIP 76952; Gamma CrB; 8 CrB

3.84 mag 0.6″ B: 5.6 A0V
Theta CrB

HIP 76127; Theta CrB; 4 CrB

4.14 mag 0.8″ B: 6.3 B6Vnne
Epsilon CrB

HIP 78159; Epsilon CrB; 13 CrB

4.15 mag K2IIIab
Delta CrB

HIP 77512; Delta CrB; 10 CrB

4.63 mag G3.5III-IVFe-1
Tau CrB

HIP 79119; Tau CrB; 16 CrB

4.76 mag K1-III-IV
Kappa CrB

HIP 77655; Kappa CrB; 11 CrB

4.82 mag K1IVa
Xi CrB

HIP 80181; Xi CrB; 19 CrB

4.85 mag K0III
Iota CrB

HIP 78493; Iota CrB; 14 CrB

4.99 mag A0p:Hg:
Zeta CrB

HIP 76669; Zeta2 CrB; 7 CrB

5.07 mag 6.3″ B: 5.9 B7V
Mu CrB

HIP 76307; Mu CrB; 6 CrB

5.11 mag M1.5III-IIIb
Nu CrB

HIP 80197; Nu CrB; 20 CrB

5.20 mag 356.1″ B: 5.6 M2IIIab
Nu CrB

HIP 80214; Nu CrB; 21 CrB

5.39 mag 98.3″ B: 11.5 K5III
Rho CrB

HIP 78459; Rho CrB; 15 CrB

5.41 mag 147.8″ B: 10.5 G0+VaFe-1
Lambda CrB

HIP 78012; Lambda CrB; 12 CrB

5.45 mag 90.6″ B: 11.4 F0IV
1 CrB

HIP 75049; 1 CrB

5.51 mag 144.1″ B: 10.5 K0III
Pi CrB

HIP 77048; Pi CrB; 9 CrB

5.56 mag gG9
Eta CrB

HIP 75312; Eta CrB; 2 CrB

5.58 mag 0.7″ B: 6.0 G0V
HIP 78276
5.62 mag gK5

Double Stars

15
Sigma CrB

HIP 79607; Sigma CrB; 17 CrB

5.64 mag 7.3″ B: 6.5 G0VCaIIe
Zeta CrB

HIP 76669; Zeta2 CrB; 7 CrB

5.07 mag 6.3″ B: 5.9 B7V
Nu CrB

HIP 80197; Nu CrB; 20 CrB

5.20 mag 356.1″ B: 5.6 M2IIIab
HIP 79350
6.29 mag 5.7″ B: 10.2 K2III
HIP 80247
6.40 mag 31.0″ B: 9.8 A4Vn
Nu CrB

HIP 80214; Nu CrB; 21 CrB

5.39 mag 98.3″ B: 11.5 K5III
HIP 79441
6.50 mag 2.5″ B: 10.0 F3V
1 CrB

HIP 75049; 1 CrB

5.51 mag 144.1″ B: 10.5 K0III
Lambda CrB

HIP 78012; Lambda CrB; 12 CrB

5.45 mag 90.6″ B: 11.4 F0IV
Rho CrB

HIP 78459; Rho CrB; 15 CrB

5.41 mag 147.8″ B: 10.5 G0+VaFe-1
Eta CrB

HIP 75312; Eta CrB; 2 CrB

5.58 mag 0.7″ B: 6.0 G0V
Theta CrB

HIP 76127; Theta CrB; 4 CrB

4.14 mag 0.8″ B: 6.3 B6Vnne
Gamma CrB

HIP 76952; Gamma CrB; 8 CrB

3.84 mag 0.6″ B: 5.6 A0V
Kappa CrB

HIP 77655; Kappa CrB; 11 CrB

4.82 mag K1IVa
Epsilon CrB

HIP 78159; Epsilon CrB; 13 CrB

4.15 mag K2IIIab

Variable Stars

2
Blaze Star

HR 5958

10.00 mag 2.0 - 10.8 NR+ELL sdBe+gM3+Q
R CrB

HIP 77442

5.85 mag 5.61 - 15.1 RCB G0Iep

Deep Sky Objects

30
Galaxy (30)
NGC 5961
14.0 mag 0.8 Sb
NGC 5974
14.0 mag 0.5 Scd
NGC 6120
14.0 mag 0.6 Sb
IC 4539
15.0 mag 0.4 SABb
IC 4570
15.0 mag 1.0 SABc
IC 4582
15.0 mag 1.4 SBbc
IC 4546
15.0 mag 0.6 Sc
IC 4572
15.0 mag 0.9 SBa
NGC 5924
15.0 mag SBa
NGC 5958
13.0 mag SABc
NGC 6001
14.0 mag SABc
NGC 6016
15.0 mag SABc
NGC 6038
14.0 mag Sc
NGC 6085
14.0 mag Sa
NGC 6096
15.0 mag Sb
NGC 6102
15.0 mag Sbc
NGC 6103
14.0 mag Sc
NGC 6104
14.0 mag SBb
NGC 6105
15.0 mag SBa
NGC 6108
15.0 mag SBab
NGC 6110
15.0 mag Sa
NGC 6114
15.0 mag Sab
NGC 6116
15.0 mag SABb
NGC 6117
14.0 mag Sc
NGC 6119
15.0 mag Sc
NGC 6122
15.0 mag Sb
NGC 6131
14.0 mag SABc
NGC 6142
15.0 mag Sb
NGC 6002
17.0 mag 0.2
IC 4568
15.0 mag Sb