Gamma Her
HIP 80170; Gamma Her; 20 Her
DoubleStar
Her
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.75
Spectral Type
A9III
Star Color
Yellow-white
(B-V 0.27)
Distance
192.6 ly
Position & Identifiers
RA
16h 21m 55.2s
Dec
+19° 09' 11.0"
Constellation
Her
HR
6095
HIP
80170
Bayer
Gamma
Flamsteed
20 Her
Double Cat
10022
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
43.3″
Companion Mag
10.1
Position Angle
227°
Star Colors
A: Yellow-white
Discoverer
SHJ 227
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 43.3″ · PA: 227° · 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
ADS 10022B, 9.58v, optical.
11.9d.
Hyades group.
Survey Image
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