V1768 Cyg
HIP 98863
DoubleStar
Cyg
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
5.64
Spectral Type
B1.5Ia
Star Color
Yellow
(B-V 0.54)
Position & Identifiers
RA
20h 04m 36.1s
Dec
+32° 13' 07.0"
Constellation
Cyg
HR
7678
HIP
98863
Variable ID
V1768 Cyg
Double Cat
13335
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Visibility
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Multiple Star System
Separation
32.9″
Companion Mag
10.5
Position Angle
9°
Star Colors
A: Yellow
B: Red
Discoverer
HJ 1471
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 32.9″ · PA: 9° · 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
Amp. 0.08B, about 26d. Mass loss 0.00005 solar masses/y.
Optical companion, +0.74(B-V), +0.34(U-B).
Vul OB2; in reflection nebula; member assoc. Cyg R1 at 1000 pc.
Shell star.
Survey Image
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