Zeta CrB
HIP 76669; Zeta2 CrB; 7 CrB
Observable Double Star
Excellent (66/100)
Sep: 6.3", Companion: mag 5.9
HIP 76669; Zeta2 CrB; 7 CrB
DoubleStar
CrB
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
5.07
Spectral Type
B7V
Star Color
Blue-white
(B-V -0.12)
Distance
217.4 ly
Position & Identifiers
RA
15h 39m 22.7s
Dec
+36° 38' 09.0"
Constellation
CrB
HR
5834
HIP
76669
Bayer
Zeta2
Flamsteed
7 CrB
Double Cat
9737
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Visibility
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Multiple Star System
Separation
6.3″
Companion Mag
5.9
Companion Sp
B9V
Position Angle
306°
Star Colors
A: Blue-white
B: Blue-white
Discoverer
STF1965
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.3″ · PA: 306° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Binary with HR 5833.
ADS 9737A, B6V+B6V, 12.5842d, K 126.1k/s, V0 -14.3k/s, msin3i 9.40, asini 21.8. Both components vsini 100:k/s.
0.010".
Survey Image
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