Corona Borealis kor OH nah bore ee AL iss The Northern Crown
Star Name Coords. Dist.(ly) Mag. Spect. Type of Star Features, etc.
Gemma
aka - Alphecca
Arabic: "The Gem"
Alpha Coronae Borealis
15h 34' 41.2
+26� 42' 53 		75 2.22v G5 V
A0 V 		Yellow and
Blue White
Main Sequence 		Eclipsing Binary
17.3 year orbit
- appears green -
Nusakan
Arabic: "two lines"
Beta Coronae Borealis
15h 27' 49.7
+29� 6' 20 		114 3.66 F0 White
Main Sequence
Gamma A
Gamma Cor B
Gamma B
15h 42' 44.5
+26� 17' 44 		145 4.06 B9 IV Blue
Sub Giant
5.62 A3V Blue White
Main Sequence
Delta Cor B 15h 49' 35.6
+26� 4' 6 		165 4.59 G5 III-IV Yellow
Sub Giant
Zeta 1
Zeta Cor B
Zeta 2
15h 39' 22.1
+36� 38' 12 		470 5.95 B9V Blue
Main Sequence
Wide Orbital Binary
15h 39' 22.6
+36� 38' 9 		4.99 B7V
Eta 1
Eta Coronae Borealis
Eta 2
15h 23' 12.2
+30� 17' 16 		61 5.73 G0 V Yellow
Main Sequence
Close Orbital Binary
6.02 G3 V
Kappa Cor B 15h 51' 13.8
+35� 39' 26 		101 4.79 K0 III-IV Orange
Sub Giant
Lambda Cor B 15h 55' 47.6
+37� 56' 49 		135 5.43 F0 IV White
Sub Giant
Rho Cor B 16h 1' 2.6
+33� 18' 13 		61 5.39 G2V Yellow
Main Sequence
Sigma 1
Sigma Cor B
Sigma 2
16h 14' 40.7
+33� 51' 30 		71 5.71 G0V Yellow
Main Sequence
Close Orbital Binary
6.74 G1 V
Tau Cor B 16h 8' 58.2
+36� 29' 27 		113 4.73 K0 III-IV Orange
Sub Giant