HIP 21644
HIP 21644
DoubleStar
Eri
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.01
Spectral Type
A2IV
Star Color
White
(B-V 0.07)
Distance
116.5 ly
Position & Identifiers
RA
04h 38m 53.6s
Dec
-12° 07' 23.0"
Constellation
Eri
HR
1483
HIP
21644
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Visibility
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Multiple Star System
Separation
0.1″
Companion Mag
7.2
Position Angle
260°
Star Colors
A: White
Discoverer
HDS 599
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: 260° · N up, E left
Unresolved · 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
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Survey Image
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