Gienah Ghurab
HIP 59803; Gamma Crv; 4 Crv
HIP 59803; Gamma Crv; 4 Crv
DoubleStar
Crv
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
2.59
Variable Type
Ellipsoidal Variable
Spectral Type
B7IV
Star Color
Blue-white
(B-V -0.11)
Distance
154 ly
Position & Identifiers
RA
12h 15m 48.4s
Dec
-17° 32' 31.0"
Constellation
Crv
HR
4662
HIP
59803
Bayer
Gamma
Flamsteed
4 Crv
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Visibility
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Multiple Star System
Separation
1.1″
Companion Mag
9.7
Companion Sp
K9V
Position Angle
106°
Star Colors
A: Blue-white
Discoverer
RBR 5
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.1″ · PA: 106° · N up, E left
Unresolved · 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
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Stellar Fusion
Stellar Notes
Expanding circumstellar shell.
Hyades group; probable blue straggler.
Gienah Ghurab; Gienah, a name also applied to HR 7949.
Diam. = 0.00072 - 0.00075".
Survey Image
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