Psi Cyg
Good (52/100)
HIP 98055; Psi Cyg; 24 Cyg
DoubleStar
Cygnus
(Cyg)
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
4.92
Spectral Type
A4Vn
Star Color
White
(B-V 0.12)
Distance
652 ly
Position & Identifiers
RA
19h 55m 37.8s
Dec
+52° 26' 20.0"
Constellation
Cygnus
(Cyg)
HR
7619
HIP
98055
Bayer
Psi
Flamsteed
24 Cyg
Double Cat
13148
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Visibility
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Multiple Star System
Components
4
Component IDs
AB
Separation
2.8″
Companion Mag
7.5
Position Angle
175°
Star Colors
A: White
B: Yellow-white
Discoverer
STF2605
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 2.8″ · PA: 175° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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 Fusion
Stellar Notes
AB combined mag., colors. Sources differ on spectral class of component B from A7V to F4V. vsini of B, 120k/s.
0.008".
Light Travel Time Machine
Relativistic Travel
Survey Image
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