30 Cap
HIP 105143; 30 Cap
DoubleStar
Cap
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
5.43
Spectral Type
B8III
Star Color
Blue-white
(B-V -0.12)
Position & Identifiers
RA
21h 17m 57.3s
Dec
-17° 59' 07.0"
Constellation
Cap
HR
8137
HIP
105143
Flamsteed
30 Cap
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Visibility
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Multiple Star System
Separation
0.1″
Star Colors
A: Blue-white
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 Notes
Suspected SB, 6.1, 6.1v, sep. 0.1".
Sp. shows Mn. Helium-weak star.
Survey Image
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