Gienah Cygni
HIP 102488; Epsilon Cyg; 53 Cyg
HIP 102488; Epsilon Cyg; 53 Cyg
DoubleStar
Cyg
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
2.46
Spectral Type
K0III-IV
Star Color
Orange
(B-V 1.03)
Distance
72.7 ly
Position & Identifiers
RA
20h 46m 12.7s
Dec
+33° 58' 13.0"
Constellation
Cyg
HR
7949
HIP
102488
Bayer
Epsilon
Flamsteed
53 Cyg
Double Cat
14274
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
79.2″
Companion Mag
11.6
Companion Sp
M3
Position Angle
261°
Star Colors
A: Orange
B: Red
Discoverer
STT 594
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 79.2″ · PA: 261° · 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
AB optical. C, 13v at 78" CPM.
Gienah Cygni; Gienah, also applied to HR 4662.
Survey Image
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