45 Capricorni — Double Star in Capricornus
Observe
1Physical Properties
Magnitude
5.99
Spectral Type
F0V
Star Color
Yellow-white
(B-V 0.21)
2Position & Identifiers
RA
21h 44m 01.0s
Dec
-14° 44' 58.0"
Constellation
Capricornus
(Cap)
HR
8302
HIP
107302
HD
206677
SAO
164612
Flamsteed
45 Cap
Querying VizieR catalog...
3How easy to split?
Primary
6.0 mag
Companion
9.5 mag
Separation
4.2″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Hard+ | Hard+ | Hard+ |
| 150 mm Newton 150mm Newt. | Medium+ | Medium+ | Medium+ |
| 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
Set a location in User Settings to see visibility data.
Best season
Jul – Sep
(peak: Aug)
5Multiple Star System
Separation
4.2″
Companion Mag
9.5
Position Angle
229°
Star Colors
A: Yellow-white
B: Orange
Discoverer
DRS 68
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 6.0 · B: 9.5 · Sep: 4.2″ · PA: 229° · N up, E right
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
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.
29 Aqr
Eclipsing binary, period 22.7h
Double Star
mag 6.37
5.0°
Aquarius
NGC 7180
Elliptical galaxy
Galaxy
mag 12.5
7.3°
Aquarius
M30
NGC 7099
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 7.5
8.5°
Capricornus
41 Aqr
Easy double, sep 5.2″
Double Star
mag 5.32
9.6°
Aquarius
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