HIP 55225 — Double Star in Chamaeleon
Observe
1Physical Properties
Magnitude
6.35
Spectral Type
A8IIIm:
bright giant
Star Color
Yellow-white
(B-V 0.26)
2Position & Identifiers
RA
11h 18m 34.3s
Dec
-79° 40' 07.0"
Constellation
Chamaeleon
(Cha)
HR
4385
HIP
55225
HD
98617
SAO
256823
Querying VizieR catalog...
3How easy to split?
Primary
6.4 mag
Companion
9.9 mag
Separation
0.6″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | V. hard | V. hard | V. hard |
| 150 mm Newton 150mm Newt. | V. hard | V. hard | V. hard |
| Celestron C8 (203 mm SCT) C8 203mm | V. hard | V. hard | V. hard |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
To reach "Medium" at Bortle 3, you'd need at least a 690 mm reflector.
4Visibility
Set a location in User Settings to see visibility data.
Best season
Feb – Apr
(peak: Mar)
5Multiple Star System
Separation
0.6″
Companion Mag
9.9
Position Angle
237°
Star Colors
A: Yellow-white
B: Orange
Discoverer
HDS1614
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 6.3 · B: 9.9 · Sep: 0.6″ · PA: 237° · N up, E right
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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6
Size Comparison
Querying VizieR for stellar data…
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
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.
IC 2980
Elliptical galaxy
Galaxy
mag 12.41
6.4°
Musca
Eta Cha
Easy double, sep 8.0″
Double Star
mag 5.47
7.2°
Chamaeleon
NGC 4372
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 7.8
8.0°
Musca
Theta Aps
Semi-regular variable, range 4.7–6.2
Variable Star
mag 5.50
8.7°
Apus
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