18 Boo
HIP 69989; 18 Boo
DoubleStar
Boo
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.41
Spectral Type
F5IV
Star Color
Yellow-white
(B-V 0.38)
Position & Identifiers
RA
14h 19m 16.3s
Dec
+13° 00' 15.0"
Constellation
Boo
HR
5365
HIP
69989
Flamsteed
18 Boo
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Visibility
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Multiple Star System
Separation
164.6″
Companion Mag
10.8
Position Angle
221°
Star Colors
A: Yellow-white
Discoverer
ENG 51
Eyepiece View
32x
Dawes: 1.9″
TFOV: 1.6°
Realistic = true angular size
Sep: 164.6″ · PA: 221° · 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
Optical.
UMa stream.
Survey Image
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