Kappa Dra
HIP 61281; Kappa Dra; 5 Dra
Star
Dra
Visible
Level 1
Naked eye / Binoculars
Physical Properties
Magnitude
3.87
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B5IIIe
Star Color
Blue-white
(B-V -0.13)
Distance
488.9 ly
Position & Identifiers
RA
12h 33m 29.0s
Dec
+69° 47' 18.0"
Constellation
Dra
HR
4787
HIP
61281
Bayer
Kappa
Flamsteed
5 Dra
Variable ID
Kap Dra
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Visibility
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Multiple Star System
Separation
0.0″
Position Angle
211°
Star Colors
A: Blue-white
Discoverer
CIA 49
Eyepiece View
15x
Dawes: 1.9″
TFOV: 3.3°
Realistic = true angular size
Sep: 0.0″ · PA: 211° · N up, E left
Unresolved · 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
Gamma Cas 3.82 - 4.10V. H alpha and H beta emission vary period about 30d. H alpha profile changes in 1 min. or less.
0.890384d, K 22.54k/s, V0 -10.97k/s, asini 0.275. The orbit has been questioned and the period presumed to be | rotational rather than orbital.
Shell star. Excess IR emission.
Survey Image
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