Seginus
HIP 71075; Gamma Boo; 27 Boo
HIP 71075; Gamma Boo; 27 Boo
DoubleStar
Boo
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.03
Range
3.04 - 3.04
Period
1.8 hours
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A7IV+(n)
Star Color
Yellow-white
(B-V 0.19)
Distance
86.8 ly
Position & Identifiers
RA
14h 32m 04.7s
Dec
+38° 18' 30.0"
Constellation
Boo
HR
5435
HIP
71075
Bayer
Gamma
Flamsteed
27 Boo
Variable ID
Gam Boo
Double Cat
9300
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Visibility
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Light Curve
Multiple Star System
Components
3
Separation
53.0″
Companion Mag
12.7
Position Angle
123°
Star Colors
A: Yellow-white
Discoverer
BU 616
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 53.0″ · PA: 123° · 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
Delta Sct 3.02 - 3.07V, 3.23 - 3.28B, 3.20 - 3.25p, 0.2903137d. Hydrogen and Ca lines vary.
Primary found double by speckle interferometry, sep. 0.069". Component B, optical.
Varies in period of 0.25d.
Seginus; Ceginus; Haris in Becvar.
Survey Image
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