45 Boo
HIP 73996; 45 Boo
DoubleStar
Boo
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.93
Spectral Type
F5V
Star Color
Yellow-white
(B-V 0.43)
Distance
51 ly
Position & Identifiers
RA
15h 07m 18.1s
Dec
+24° 52' 09.0"
Constellation
Boo
HR
5634
HIP
73996
Flamsteed
45 Boo
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Visibility
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Multiple Star System optical
Components
3
Component IDs
AC
Separation
103.3″
Companion Mag
11.5
Position Angle
40°
Star Colors
A: Yellow-white
Discoverer
ENG 52
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 103.3″ · PA: 40° · 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 Fusion
Stellar Notes
Both companions optical.
Sirius group; UMa stream.
Survey Image
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