Eta Cha
Observable Double Star
Excellent (60/100)
Sep: 8.0"
HIP 42637; Eta Cha
DoubleStar
Cha
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
5.47
Spectral Type
B8V
Star Color
Blue-white
(B-V -0.10)
Position & Identifiers
RA
08h 41m 19.5s
Dec
-78° 57' 48.0"
Constellation
Cha
HR
3502
HIP
42637
Bayer
Eta
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Visibility
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Multiple Star System
Separation
8.0″
Companion Sp
A7V
Position Angle
264°
Star Colors
A: Blue-white
B: Yellow-white
Discoverer
BNK 3
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 8.0″ · PA: 264° · 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
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Survey Image
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