HIP 104642
Physical Properties
Magnitude
5.64
Spectral Type
B0II
Star Color
White
(B-V 0.11)
Distance
1,631 ly
Position & Identifiers
RA
21h 11m 48.2s
Dec
+59° 59' 11.0"
Constellation
Cepheus
(Cep)
HR
8119
HIP
104642
Double Cat
14749
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Visibility
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Multiple Star System
Components
5
Component IDs
AB
Separation
1.0″
Companion Mag
6.8
Position Angle
211°
Star Colors
A: White
Discoverer
STF2780
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.0″ · PA: 211° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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
AB binary. B, 7v at 1".
Cep OB2; exciting star of HII region S129.
Also classified O9 and B0II. Spectrophotometric classification by Chalonge, B0II. Most observers give B0V, perhaps O9V | or B0IV.
Light Travel Time Machine
Relativistic Travel
Survey Image
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