HIP 105259
HIP 105259
DoubleStar
Cep
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.66
Range
5.55 - 5.76
Variable Type
Semi-Regular Variable (Supergiant)
Spectral Type
M1Ibep+B2pe+B3V
Star Color
Red
(B-V 1.38)
Distance
815 ly
Position & Identifiers
RA
21h 19m 15.8s
Dec
+58° 37' 25.0"
Constellation
Cep
HR
8164
HIP
105259
Double Cat
14864
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Visibility
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Multiple Star System
Components
4
Component IDs
AB
Separation
4.6″
Companion Mag
9.3
Companion Sp
B2+B3
Position Angle
45°
Star Colors
A: Red
B: Blue
Discoverer
STF2790
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 4.6″ · PA: 45° · 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 Fusion
Stellar Notes
Variable shell spectrum.
AB binary. B is B3V.
75d period not confirmed by RV of the blue companion in the nonvariable VV Cephei system. The second component B2V, | 1.9 mag. fainter than primary. SKYLAB indicates cool star with hot companion. vsini secondary 50k/s. Resolved by | speckle interferometry 1986.45, sep. 0.09".
Cep OB2.
0.005".
Survey Image
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