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Corona Borealis

Genitive: Coronae Borealis

Northern Summer 179 sq° CrB

Brightest star: Alphecca (mag 2.23)

RA 15h 35m 60.0s · Dec +31d 00' 0"

Semicircular arc

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Corona Borealis - Mythology

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.

When is Corona Borealis up?

Showing 50.0° N, 0.0° E. Save your location for a personalised chart.
12:0015:0018:0021:0000:0003:0006:0009:0012:00JanJan 00:00 — altitude 7°Jan 01:00 — altitude 15°Jan 02:00 — altitude 24°Jan 03:00 — altitude 33°Jan 04:00 — altitude 42°Jan 05:00 — altitude 52°Jan 06:00 — altitude 61° (twilight)Jan 07:00 — altitude 68° (twilight)Jan 08:00 — altitude 71° (daytime)Jan 09:00 — altitude 68° (daytime)Jan 10:00 — altitude 60° (daytime)Jan 11:00 — altitude 51° (daytime)Jan 12:00 — altitude 41° (daytime)Jan 13:00 — altitude 32° (daytime)Jan 14:00 — altitude 23° (daytime)Jan 15:00 — altitude 14° (daytime)Jan 16:00 — altitude 6° (daytime)Jan 17:00 — altitude -0° (daytime)Jan 18:00 — altitude -5° (twilight)Jan 19:00 — altitude -8°Jan 20:00 — altitude -9°Jan 21:00 — altitude -8°Jan 22:00 — altitude -4°Jan 23:00 — altitude 1°Jan: best around 05:00 localFebFeb 00:00 — altitude 24°Feb 01:00 — altitude 33°Feb 02:00 — altitude 43°Feb 03:00 — altitude 52°Feb 04:00 — altitude 61°Feb 05:00 — altitude 68°Feb 06:00 — altitude 71° (twilight)Feb 07:00 — altitude 67° (daytime)Feb 08:00 — altitude 60° (daytime)Feb 09:00 — altitude 51° (daytime)Feb 10:00 — altitude 41° (daytime)Feb 11:00 — altitude 32° (daytime)Feb 12:00 — altitude 22° (daytime)Feb 13:00 — altitude 14° (daytime)Feb 14:00 — altitude 6° (daytime)Feb 15:00 — altitude -0° (daytime)Feb 16:00 — altitude -5° (daytime)Feb 17:00 — altitude -8° (daytime)Feb 18:00 — altitude -9° (twilight)Feb 19:00 — altitude -8° (twilight)Feb 20:00 — altitude -4°Feb 21:00 — altitude 1°Feb 22:00 — altitude 8°Feb 23:00 — altitude 16°Feb: best around 05:00 localMarMar 00:00 — altitude 41°Mar 01:00 — altitude 51°Mar 02:00 — altitude 60°Mar 03:00 — altitude 67°Mar 04:00 — altitude 71°Mar 05:00 — altitude 68° (twilight)Mar 06:00 — altitude 61° (daytime)Mar 07:00 — altitude 52° (daytime)Mar 08:00 — altitude 43° (daytime)Mar 09:00 — altitude 33° (daytime)Mar 10:00 — altitude 24° (daytime)Mar 11:00 — altitude 15° (daytime)Mar 12:00 — altitude 7° (daytime)Mar 13:00 — altitude 1° (daytime)Mar 14:00 — altitude -5° (daytime)Mar 15:00 — altitude -8° (daytime)Mar 16:00 — altitude -9° (daytime)Mar 17:00 — altitude -8° (daytime)Mar 18:00 — altitude -5° (daytime)Mar 19:00 — altitude 0° (twilight)Mar 20:00 — altitude 7°Mar 21:00 — altitude 14°Mar 22:00 — altitude 23°Mar 23:00 — altitude 32°Mar: best around 04:00 localAprApr 00:00 — altitude 60°Apr 01:00 — altitude 68°Apr 02:00 — altitude 71°Apr 03:00 — altitude 68°Apr 04:00 — altitude 61° (twilight)Apr 05:00 — altitude 52° (daytime)Apr 06:00 — altitude 42° (daytime)Apr 07:00 — altitude 33° (daytime)Apr 08:00 — altitude 24° (daytime)Apr 09:00 — altitude 15° (daytime)Apr 10:00 — altitude 7° (daytime)Apr 11:00 — altitude 0° (daytime)Apr 12:00 — altitude -5° (daytime)Apr 13:00 — altitude -8° (daytime)Apr 14:00 — altitude -9° (daytime)Apr 15:00 — altitude -8° (daytime)Apr 16:00 — altitude -5° (daytime)Apr 17:00 — altitude 0° (daytime)Apr 18:00 — altitude 7° (daytime)Apr 19:00 — altitude 15° (daytime)Apr 20:00 — altitude 23° (twilight)Apr 21:00 — altitude 33°Apr 22:00 — altitude 42°Apr 23:00 — altitude 52°Apr: best around 02:00 localMayMay 00:00 — altitude 71°May 01:00 — altitude 68°May 02:00 — altitude 61° (twilight)May 03:00 — altitude 52° (twilight)May 04:00 — altitude 43° (daytime)May 05:00 — altitude 33° (daytime)May 06:00 — altitude 24° (daytime)May 07:00 — altitude 15° (daytime)May 08:00 — altitude 7° (daytime)May 09:00 — altitude 1° (daytime)May 10:00 — altitude -5° (daytime)May 11:00 — altitude -8° (daytime)May 12:00 — altitude -9° (daytime)May 13:00 — altitude -8° (daytime)May 14:00 — altitude -5° (daytime)May 15:00 — altitude 0° (daytime)May 16:00 — altitude 7° (daytime)May 17:00 — altitude 14° (daytime)May 18:00 — altitude 23° (daytime)May 19:00 — altitude 32° (daytime)May 20:00 — altitude 42° (daytime)May 21:00 — altitude 51° (twilight)May 22:00 — altitude 60° (twilight)May 23:00 — altitude 68°May: best around 00:00 localJunJun 00:00 — altitude 61° (twilight)Jun 01:00 — altitude 52° (twilight)Jun 02:00 — altitude 42° (twilight)Jun 03:00 — altitude 33° (twilight)Jun 04:00 — altitude 24° (daytime)Jun 05:00 — altitude 15° (daytime)Jun 06:00 — altitude 7° (daytime)Jun 07:00 — altitude 0° (daytime)Jun 08:00 — altitude -5° (daytime)Jun 09:00 — altitude -8° (daytime)Jun 10:00 — altitude -9° (daytime)Jun 11:00 — altitude -8° (daytime)Jun 12:00 — altitude -5° (daytime)Jun 13:00 — altitude 0° (daytime)Jun 14:00 — altitude 7° (daytime)Jun 15:00 — altitude 15° (daytime)Jun 16:00 — altitude 23° (daytime)Jun 17:00 — altitude 32° (daytime)Jun 18:00 — altitude 42° (daytime)Jun 19:00 — altitude 52° (daytime)Jun 20:00 — altitude 61° (daytime)Jun 21:00 — altitude 68° (twilight)Jun 22:00 — altitude 71° (twilight)Jun 23:00 — altitude 68° (twilight)JulJul 00:00 — altitude 43°Jul 01:00 — altitude 33° (twilight)Jul 02:00 — altitude 24° (twilight)Jul 03:00 — altitude 15° (twilight)Jul 04:00 — altitude 7° (daytime)Jul 05:00 — altitude 1° (daytime)Jul 06:00 — altitude -4° (daytime)Jul 07:00 — altitude -8° (daytime)Jul 08:00 — altitude -9° (daytime)Jul 09:00 — altitude -8° (daytime)Jul 10:00 — altitude -5° (daytime)Jul 11:00 — altitude 0° (daytime)Jul 12:00 — altitude 7° (daytime)Jul 13:00 — altitude 14° (daytime)Jul 14:00 — altitude 23° (daytime)Jul 15:00 — altitude 32° (daytime)Jul 16:00 — altitude 42° (daytime)Jul 17:00 — altitude 51° (daytime)Jul 18:00 — altitude 60° (daytime)Jul 19:00 — altitude 68° (daytime)Jul 20:00 — altitude 71° (daytime)Jul 21:00 — altitude 68° (twilight)Jul 22:00 — altitude 61° (twilight)Jul 23:00 — altitude 52° (twilight)Jul: best around 00:00 localAugAug 00:00 — altitude 24°Aug 01:00 — altitude 15°Aug 02:00 — altitude 7°Aug 03:00 — altitude 0° (twilight)Aug 04:00 — altitude -5° (twilight)Aug 05:00 — altitude -8° (daytime)Aug 06:00 — altitude -9° (daytime)Aug 07:00 — altitude -8° (daytime)Aug 08:00 — altitude -5° (daytime)Aug 09:00 — altitude 0° (daytime)Aug 10:00 — altitude 7° (daytime)Aug 11:00 — altitude 15° (daytime)Aug 12:00 — altitude 23° (daytime)Aug 13:00 — altitude 32° (daytime)Aug 14:00 — altitude 42° (daytime)Aug 15:00 — altitude 52° (daytime)Aug 16:00 — altitude 61° (daytime)Aug 17:00 — altitude 68° (daytime)Aug 18:00 — altitude 71° (daytime)Aug 19:00 — altitude 68° (daytime)Aug 20:00 — altitude 61° (twilight)Aug 21:00 — altitude 51° (twilight)Aug 22:00 — altitude 42°Aug 23:00 — altitude 32°Aug: best around 22:00 localSepSep 00:00 — altitude 7°Sep 01:00 — altitude 0°Sep 02:00 — altitude -5°Sep 03:00 — altitude -8°Sep 04:00 — altitude -9° (twilight)Sep 05:00 — altitude -8° (twilight)Sep 06:00 — altitude -5° (daytime)Sep 07:00 — altitude 0° (daytime)Sep 08:00 — altitude 7° (daytime)Sep 09:00 — altitude 15° (daytime)Sep 10:00 — altitude 23° (daytime)Sep 11:00 — altitude 33° (daytime)Sep 12:00 — altitude 42° (daytime)Sep 13:00 — altitude 52° (daytime)Sep 14:00 — altitude 61° (daytime)Sep 15:00 — altitude 68° (daytime)Sep 16:00 — altitude 71° (daytime)Sep 17:00 — altitude 68° (daytime)Sep 18:00 — altitude 60° (daytime)Sep 19:00 — altitude 51° (twilight)Sep 20:00 — altitude 42° (twilight)Sep 21:00 — altitude 32°Sep 22:00 — altitude 23°Sep 23:00 — altitude 14°Sep: best around 21:00 localOctOct 00:00 — altitude -5°Oct 01:00 — altitude -8°Oct 02:00 — altitude -9°Oct 03:00 — altitude -8°Oct 04:00 — altitude -5°Oct 05:00 — altitude 0° (twilight)Oct 06:00 — altitude 7° (daytime)Oct 07:00 — altitude 14° (daytime)Oct 08:00 — altitude 23° (daytime)Oct 09:00 — altitude 32° (daytime)Oct 10:00 — altitude 42° (daytime)Oct 11:00 — altitude 52° (daytime)Oct 12:00 — altitude 61° (daytime)Oct 13:00 — altitude 68° (daytime)Oct 14:00 — altitude 71° (daytime)Oct 15:00 — altitude 68° (daytime)Oct 16:00 — altitude 61° (daytime)Oct 17:00 — altitude 51° (daytime)Oct 18:00 — altitude 42° (twilight)Oct 19:00 — altitude 32°Oct 20:00 — altitude 23°Oct 21:00 — altitude 14°Oct 22:00 — altitude 7°Oct 23:00 — altitude 0°Oct: best around 19:00 localNovNov 00:00 — altitude -9°Nov 01:00 — altitude -8°Nov 02:00 — altitude -5°Nov 03:00 — altitude 0°Nov 04:00 — altitude 7°Nov 05:00 — altitude 15°Nov 06:00 — altitude 23° (twilight)Nov 07:00 — altitude 33° (daytime)Nov 08:00 — altitude 42° (daytime)Nov 09:00 — altitude 52° (daytime)Nov 10:00 — altitude 61° (daytime)Nov 11:00 — altitude 68° (daytime)Nov 12:00 — altitude 71° (daytime)Nov 13:00 — altitude 68° (daytime)Nov 14:00 — altitude 60° (daytime)Nov 15:00 — altitude 51° (daytime)Nov 16:00 — altitude 42° (daytime)Nov 17:00 — altitude 32° (twilight)Nov 18:00 — altitude 23° (twilight)Nov 19:00 — altitude 14°Nov 20:00 — altitude 6°Nov 21:00 — altitude -0°Nov 22:00 — altitude -5°Nov 23:00 — altitude -8°Nov: best around 05:00 localDecDec 00:00 — altitude -5°Dec 01:00 — altitude 0°Dec 02:00 — altitude 7°Dec 03:00 — altitude 14°Dec 04:00 — altitude 23°Dec 05:00 — altitude 32°Dec 06:00 — altitude 42° (twilight)Dec 07:00 — altitude 52° (twilight)Dec 08:00 — altitude 61° (daytime)Dec 09:00 — altitude 68° (daytime)Dec 10:00 — altitude 71° (daytime)Dec 11:00 — altitude 68° (daytime)Dec 12:00 — altitude 61° (daytime)Dec 13:00 — altitude 52° (daytime)Dec 14:00 — altitude 42° (daytime)Dec 15:00 — altitude 32° (daytime)Dec 16:00 — altitude 23° (daytime)Dec 17:00 — altitude 14° (twilight)Dec 18:00 — altitude 7°Dec 19:00 — altitude 0°Dec 20:00 — altitude -5°Dec 21:00 — altitude -8°Dec 22:00 — altitude -9°Dec 23:00 — altitude -8°Dec: best around 05:00 local
below horizon astronomical dark — low to high altitude twilight daytime (sun up) best night-time hour

Right now

Twilight
43°
W (az 270°)
setting

Upcoming (local)

Rise 07:17
Transit 16:17 71°
Set 01:23

Across the year

Best month April
Peak altitude 71°
Circumpolar here no
Dark-sky hours / year 1918

Neighboring Constellations

Bootes Hercules Serpens

Showpieces in Corona Borealis

2
Sigma CrB

HIP 79607; Sigma CrB; 17 CrB

5.64 mag 7.4″ B: 6.5 G0VCaIIe Easy
Zeta CrB

HIP 76669; Zeta2 CrB; 7 CrB

5.07 mag 6.3″ B: 5.9 B7V Easy

Main Stars in Corona Borealis

20
Alphecca

HIP 76267; Alpha CrB; 5 CrB

2.23 mag A1V Easy
Nusakan

HIP 75695; Beta CrB; 3 CrB

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

HIP 76952; Gamma CrB; 8 CrB

3.84 mag 0.2″ B: 5.6 A0V Easy
Theta CrB

HIP 76127; Theta CrB; 4 CrB

4.14 mag 0.8″ B: 6.3 B6Vnne Very Hard
Epsilon CrB

HIP 78159; Epsilon CrB; 13 CrB

4.15 mag K2IIIab Easy
Delta CrB

HIP 77512; Delta CrB; 10 CrB

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

HIP 79119; Tau CrB; 16 CrB

4.76 mag K1-III-IV Easy
Kappa CrB

HIP 77655; Kappa CrB; 11 CrB

4.82 mag K1IVa Easy
Xi CrB

HIP 80181; Xi CrB; 19 CrB

4.85 mag K0III Easy
Iota CrB

HIP 78493; Iota CrB; 14 CrB

4.99 mag A0p:Hg: Easy
Zeta CrB

HIP 76669; Zeta2 CrB; 7 CrB

5.07 mag 6.3″ B: 5.9 B7V Easy
Mu CrB

HIP 76307; Mu CrB; 6 CrB

5.11 mag M1.5III-IIIb Easy
Nu CrB

HIP 80197; Nu CrB; 20 CrB

5.20 mag M2IIIab Easy
Nu CrB

HIP 80214; Nu CrB; 21 CrB

5.39 mag K5III Easy
Rho CrB

HIP 78459; Rho CrB; 15 CrB

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

HIP 78012; Lambda CrB; 12 CrB

5.45 mag F0IV Easy
1 CrB

HIP 75049; 1 CrB

5.51 mag K0III Easy
Pi CrB

HIP 77048; Pi CrB; 9 CrB

5.56 mag gG9 Easy
Eta CrB

HIP 75312; Eta CrB; 2 CrB

5.58 mag 0.8″ B: 6.0 G0V Very Hard
HIP 78276
5.62 mag gK5 Easy

Double Stars in Corona Borealis

15
Sigma CrB

HIP 79607; Sigma CrB; 17 CrB

5.64 mag 7.4″ B: 6.5 G0VCaIIe Easy
Zeta CrB

HIP 76669; Zeta2 CrB; 7 CrB

5.07 mag 6.3″ B: 5.9 B7V Easy
HIP 79350
6.29 mag 5.7″ B: 10.2 K2III Hard
HIP 79441
6.50 mag 2.5″ B: 10.0 F3V Very Hard
Rho CrB

HIP 78459; Rho CrB; 15 CrB

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

HIP 75312; Eta CrB; 2 CrB

5.58 mag 0.8″ B: 6.0 G0V Very Hard
Theta CrB

HIP 76127; Theta CrB; 4 CrB

4.14 mag 0.8″ B: 6.3 B6Vnne Very Hard
1 CrB

HIP 75049; 1 CrB

5.51 mag K0III Easy
Kappa CrB

HIP 77655; Kappa CrB; 11 CrB

4.82 mag K1IVa Easy
Lambda CrB

HIP 78012; Lambda CrB; 12 CrB

5.45 mag F0IV Easy
Epsilon CrB

HIP 78159; Epsilon CrB; 13 CrB

4.15 mag K2IIIab Easy
Tau CrB

HIP 79119; Tau CrB; 16 CrB

4.76 mag K1-III-IV Easy
Upsilon CrB

HIP 79757; Upsilon CrB; 18 CrB

5.78 mag A3V Easy
Xi CrB

HIP 80181; Xi CrB; 19 CrB

4.85 mag K0III Easy
Nu CrB

HIP 80197; Nu CrB; 20 CrB

5.20 mag M2IIIab Easy

Variable Stars in Corona Borealis

1
Blaze Star

HR 5958

10.00 mag 2.0 - 10.8 NR+ELL sdBe+gM3+Q Hard

Deep Sky Objects in Corona Borealis

18
Galaxy (18)
NGC 5924 survey image
NGC 5924
15.0 mag SBa Very Hard
IC 1138 survey image
IC 1138
15.0 mag 1.0 S0-a Very Hard
NGC 6109 survey image
NGC 6109
15.0 mag 1.3 E Very Hard
NGC 6137 survey image
NGC 6137
14.0 mag 2.2 E Very Hard
NGC 6097 survey image
NGC 6097
15.0 mag S0-a Very Hard
NGC 6126 survey image
NGC 6126
14.0 mag E-S0 Very Hard
NGC 6129 survey image
NGC 6129
14.0 mag E Very Hard
NGC 6086 survey image
NGC 6086
15.0 mag 2.0 E Very Hard
NGC 6069 survey image
NGC 6069
15.0 mag E Very Hard
NGC 6077 survey image
NGC 6077
15.0 mag E Very Hard
NGC 6107 survey image
NGC 6107
14.0 mag E Very Hard
NGC 6112 survey image
NGC 6112
15.0 mag E Very Hard
IC 4580 survey image
IC 4580
15.0 mag S0-a Very Hard
IC 1208 survey image
IC 1208
15.0 mag S0-a Very Hard
IC 4569 survey image
IC 4569
15.0 mag 0.5 E Very Hard
IC 4590 survey image
IC 4590
16.0 mag 0.3 E Very Hard
IC 4547 survey image
IC 4547
15.0 mag E-S0 Very Hard
IC 4587 survey image
IC 4587
15.0 mag E Very Hard