Zeta Cap
HIP 105881; Zeta Cap; 34 Cap
DoubleStar
Cap
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.74
Spectral Type
G4Ib: Ba2
Star Color
Orange
(B-V 1.00)
Distance
385.3 ly
Position & Identifiers
RA
21h 26m 40.0s
Dec
-22° 24' 41.0"
Constellation
Cap
HR
8204
HIP
105881
Bayer
Zeta
Flamsteed
34 Cap
Double Cat
14971
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Visibility
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Multiple Star System
Separation
16.3″
Companion Mag
11.7
Position Angle
14°
Star Colors
A: Orange
Discoverer
SEE 446
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 16.3″ · PA: 14° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
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
BaII star. Overabundance of praseodymium. White dwarf companion.
DM is CoD (star moved from -23d zone to -22d zone between 1855 and 1875). In Southern Durchmusterung extension | (Schoenfeld 1886), SD-23d442.
Survey Image
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