HIP 100239
HIP 100239
DoubleStar
Cyg
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
6.57
Spectral Type
A0III
Star Color
White
(B-V 0.00)
Position & Identifiers
RA
20h 19m 48.3s
Dec
+37° 07' 57.0"
Constellation
Cyg
HR
7782
HIP
100239
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Visibility
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Multiple Star System
Separation
76.6″
Companion Mag
8.7
Position Angle
257°
Star Colors
A: White
B: Yellow-white
Discoverer
ARY 1
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 76.6″ · PA: 257° · 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
Shell star. Also classified A1III, A0IV, B9V.
Survey Image
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