HIP 21428
HIP 21428
DoubleStar
Eri
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
6.33
Spectral Type
B7III
Star Color
Blue-white
(B-V -0.10)
Position & Identifiers
RA
04h 36m 01.6s
Dec
-03° 36' 43.0"
Constellation
Eri
HR
1462
HIP
21428
Double Cat
3328
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Visibility
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Multiple Star System
Components
4
Component IDs
AB
Separation
17.6″
Companion Mag
10.6
Position Angle
260°
Star Colors
A: Blue-white
B: Yellow
Discoverer
STF 571
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 17.6″ · PA: 260° · 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
Component C optical.
Survey Image
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