4 Cyg
HIP 95556; 4 Cyg
Star
Cyg
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
5.15
Variable Type
Alpha2 CVn (Magnetic Rotating)
Spectral Type
B9pSi
Star Color
Blue-white
(B-V -0.12)
Position & Identifiers
RA
19h 26m 09.1s
Dec
+36° 19' 04.0"
Constellation
Cyg
HR
7395
HIP
95556
Flamsteed
4 Cyg
Variable ID
V1741 Cyg
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Visibility
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Multiple Star System
Separation
0.0″
Companion Mag
5.9
Position Angle
271°
Star Colors
A: Blue-white
Discoverer
DSG 4
Eyepiece View
15x
Dawes: 1.9″
TFOV: 3.3°
Realistic = true angular size
Sep: 0.0″ · PA: 271° · 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
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Alpha CV, amp. 0.02U, 0.68674d.
35.0225d, K 5.7k/s, V0 -11.0k/s, asini 2.45.
Magnetic star.
Survey Image
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