Eta Chamaeleontis — Double Star in Chamaeleon
Excellent (72/100)
Observe
1Physical Properties
Magnitude
5.47
Spectral Type
B8V
Star Color
Blue-white
(B-V -0.10)
2Position & Identifiers
RA
08h 41m 19.5s
Dec
-78° 57' 48.0"
Constellation
Chamaeleon
(Cha)
HR
3502
HIP
42637
HD
75416
Bayer
Eta
Querying VizieR catalog...
3How easy to split?
Primary
5.5 mag
Companion
6.1 mag
Separation
8.0″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Easy | Easy |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) C8 203mm | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
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Best season
Dec – Feb
(peak: Jan)
5Multiple Star System
Separation
8.0″
Companion Mag
6.1
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
A: 5.5 · B: 6.1 · Sep: 8.0″ · PA: 264° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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6
Size Comparison
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7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
Survey Image
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Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
Kappa Vol
HIP 40817; Kappa1 Volantis
Easy double, sep 64.0″
Double Star
mag 5.37
7.6°
Volans
Kappa Vol
HIP 40834; Kappa2 Volantis
Easy double, sep 37.2″
Double Star
mag 5.65
7.6°
Volans
TZ Men
Eclipsing binary, period 8.6d
Variable Star
mag 6.20
8.5°
Mensa
NGC 2822
Elliptical galaxy
Galaxy
mag 12.0
9.6°
Carina
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