HIP 20138
HIP 20138
DoubleStar
Eri
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
6.37
Spectral Type
A3V
Star Color
White
(B-V 0.13)
Distance
465.9 ly
Position & Identifiers
RA
04h 19m 03.0s
Dec
-33° 54' 18.0"
Constellation
Eri
HR
1359
HIP
20138
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Visibility
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Multiple Star System
Separation
5.2″
Companion Mag
8.7
Position Angle
157°
Star Colors
A: White
B: Yellow
Discoverer
HJ 3642
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 5.2″ · PA: 157° · 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
Secondary F7V, vsini 90k/s.
Survey Image
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