39 Eri
Observable Double Star
Excellent (61/100)
Sep: 6.7", Companion: mag 8.5
HIP 19777; 39 Eri
DoubleStar
Eri
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.87
Spectral Type
K3III
Star Color
Red
(B-V 1.17)
Distance
217.4 ly
Position & Identifiers
RA
04h 14m 23.7s
Dec
-10° 15' 23.0"
Constellation
Eri
HR
1318
HIP
19777
Flamsteed
39 Eri
Double Cat
3079
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
6.7″
Companion Mag
8.5
Position Angle
143°
Star Colors
A: Red
Discoverer
STF 516
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.7″ · PA: 143° · 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
AB binary, B is G2V.
Wolf 630 group.
0.016".
Survey Image
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