30 Eri
HIP 18141; 30 Eri
DoubleStar
Eri
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.48
Spectral Type
B8V
Star Color
Blue-white
(B-V -0.10)
Distance
181.2 ly
Position & Identifiers
RA
03h 52m 41.6s
Dec
-05° 21' 41.0"
Constellation
Eri
HR
1202
HIP
18141
Flamsteed
30 Eri
Double Cat
2832
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Visibility
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Multiple Star System
Separation
8.3″
Companion Mag
10.3
Position Angle
134°
Star Colors
A: Blue-white
B: Yellow
Discoverer
HJ 338
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 8.3″ · PA: 134° · 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
Companion F4V, optical.
Survey Image
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