40 Cyg
Physical Properties
Magnitude
5.62
Spectral Type
A3V
Star Color
White
(B-V 0.06)
Distance
155 ly
Position & Identifiers
RA
20h 27m 34.3s
Dec
+38° 26' 25.0"
Constellation
Cygnus
(Cyg)
HR
7826
HIP
100907
Flamsteed
40 Cyg
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Visibility
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Multiple Star System
Separation
0.5″
Companion Mag
8.4
Position Angle
335°
Star Colors
A: White
B: Yellow
Discoverer
GUL 3
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.5″ · PA: 335° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
Size Comparison
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Spectral Classification
Hertzsprung-Russell Diagram
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