39 Boo
Observable Double Star
Good (55/100)
Sep: 2.9", Companion: mag 6.7
HIP 72524; 39 Boo
DoubleStar
Boo
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.69
Spectral Type
F6V+F5V
Star Color
Yellow
(B-V 0.47)
Distance
362.4 ly
Position & Identifiers
RA
14h 49m 41.3s
Dec
+48° 43' 14.0"
Constellation
Boo
HR
5538
HIP
72524
Flamsteed
39 Boo
Double Cat
9406
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Visibility
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Multiple Star System
Separation
2.9″
Companion Mag
6.7
Companion Sp
F5V
Position Angle
46°
Star Colors
A: Yellow
B: Yellow-white
Discoverer
STF1890
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 2.9″ · PA: 46° · N up, E left
At limit · 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
Binary. Combined mag., color.
ADS 9406B, 12.822d, K 58.3k/s, V0 -28.2k/s, msin3i 1.28, asini 9.47.
0.010".
Survey Image
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