HIP 99749
HIP 99749
DoubleStar
Cyg
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
6.71
Spectral Type
B9IV-V
Star Color
Blue-white
(B-V -0.04)
Position & Identifiers
RA
20h 14m 21.6s
Dec
+42° 06' 13.0"
Constellation
Cyg
HR
7737
HIP
99749
Double Cat
13572
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
0.9″
Companion Mag
7.6
Position Angle
170°
Star Colors
A: Blue-white
B: White
Discoverer
STT 403
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.9″ · PA: 170° · 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 and AC both binary. C, 9v at 12".
Survey Image
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