39 Com
Observable Double Star
Fair (25/100)
Sep: 1.8", Companion: mag 8.8
HIP 63948; 39 Com
DoubleStar
Com
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.99
Spectral Type
F4V
Star Color
Yellow-white
(B-V 0.39)
Distance
108.7 ly
Position & Identifiers
RA
13h 06m 21.2s
Dec
+21° 09' 12.0"
Constellation
Com
HR
4946
HIP
63948
Flamsteed
39 Com
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Visibility
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Multiple Star System
Separation
1.8″
Companion Mag
8.8
Position Angle
315°
Star Colors
A: Yellow-white
B: Orange
Discoverer
COU 11
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.8″ · PA: 315° · 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
Also classified A3p, weak lined. No G-band.
Survey Image
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