Deneb Algedi
HIP 107556; Delta Cap; 49 Cap
HIP 107556; Delta Cap; 49 Cap
Star
Cap
Visible
Level 1
Naked eye / Binoculars
Physical Properties
Magnitude
2.87
Range
2.83 - 3.05
Period
24.5 hours
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
A5MF2 (IV)
Star Color
Yellow-white
(B-V 0.29)
Temperature
8519 K
Radius
203.0 R☉
Distance
39 ly
Position & Identifiers
RA
21h 47m 02.4s
Dec
-16° 07' 38.0"
Constellation
Cap
HR
8322
HIP
107556
Bayer
Delta
Flamsteed
49 Cap
Variable ID
Del Cap
Double Cat
15314
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Visibility
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Light Curve
Multiple Star System B,C: optical
Components
4
Separation
49.9″
Companion Mag
15.0
Position Angle
60°
Star Colors
A: Yellow-white
Discoverer
HJ 3056
Size Comparison
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
EA (possibly RS CVn type) 2.83 - 3.05V, 1.0227789d. Form of light curve varies.
ADS 15314A. Component A is SB, 3.2, 5.2v, 0.0018"; B, 15.8v, 69"; C 12.7v, 120".
1.0228d, K 70.8k/s, V0 -0.2k/s, asini 0.996.
Delta Sct spectrum. Also classified Delta Del, A7mIII.
Deneb Algedi; Deneb Algiedi; Scheddi; Sheddi.
Survey Image
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