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Kappa Dra

HIP 61281; Kappa Dra; 5 Dra Star Draco (Dra) Visible Level 1 Naked eye / Binoculars
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Physical Properties

Magnitude 3.87
Range 3.82 - 4.01
Variable Type Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type B5IIIe
Star Color Blue-white (B-V -0.13)
Distance 489 ly

Position & Identifiers

RA 12h 33m 29.0s
Dec +69° 47' 18.0"
Constellation Draco (Dra)
HR 4787
HIP 61281
Bayer Kappa
Flamsteed 5 Dra
Variable ID Kap Dra

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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.

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