Alpha Cap
HIP 100027; Alpha1 Cap; 5 Cap
HIP 100027; Alpha1 Cap; 5 Cap
Star
Cap
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
4.24
Spectral Type
G3Ib
Star Color
Orange
(B-V 1.07)
Distance
544 ly
Position & Identifiers
RA
20h 17m 38.9s
Dec
-12° 30' 30.0"
Constellation
Cap
HR
7747
HIP
100027
Bayer
Alpha1
Flamsteed
5 Cap
Double Cat
13632
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Visibility
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Multiple Star System C: optical
Components
9
Component IDs
*
Separation
53.2″
Companion Mag
14.1
Position Angle
212°
Star Colors
A: Orange
B: Orange
Discoverer
BU 295
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Fusion
Stellar Notes
See note for HR 7754. ADS 13632B, 14v at 44"; C, 9.6v K5III, at 45" physical, vsini =<54k/s. D, 14.3v at 29" from C.
Prima Giedi; Algiedi Prima; Algedi with HR 7754.
Survey Image
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