HIP 105390
Observable Double Star
Good (56/100)
Sep: 2.5", Companion: mag 7.4
HIP 105390
DoubleStar
Cyg
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
5.68
Spectral Type
G8IV
Star Color
Orange
(B-V 1.08)
Distance
181.2 ly
Position & Identifiers
RA
21h 20m 50.1s
Dec
+32° 27' 10.0"
Constellation
Cyg
HR
8166
HIP
105390
Double Cat
14889
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
2.5″
Companion Mag
7.4
Position Angle
17°
Star Colors
A: Orange
Discoverer
STT 437
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 2.5″ · PA: 17° · 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
AB binary. Component B, G5IV.
Survey Image
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