BK Cam
HIP 15520
DoubleStar
Cam
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.84
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B2.5Ven
Star Color
Blue-white
(B-V -0.15)
Distance
362.4 ly
Position & Identifiers
RA
03h 19m 59.4s
Dec
+65° 39' 08.0"
Constellation
Cam
HR
985
HIP
15520
Variable ID
BK Cam
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Visibility
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Multiple Star System
Separation
120.7″
Companion Mag
12.9
Position Angle
58°
Star Colors
A: Blue-white
Discoverer
BUP 43
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 120.7″ · PA: 58° · 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
Gamma Cas, 4.78 - 4.89V. Spectrum var. 4.5y from 1916 to 1931, previously longer cycles, but no changes noted after | 1937. R-I also found at -0.03 and -0.05.
Probably optical.
4.5y.
Cas-Tau OB1.
Shell star.
Survey Image
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