103 Tau
HIP 23900; 103 Tau
DoubleStar
Tau
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.50
Spectral Type
B2V
Star Color
White
(B-V 0.06)
Position & Identifiers
RA
05h 08m 06.6s
Dec
+24° 15' 55.0"
Constellation
Tau
HR
1659
HIP
23900
Flamsteed
103 Tau
Double Cat
3709
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Visibility
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Multiple Star System
Components
4
Component IDs
AC
Separation
17.9″
Companion Mag
11.0
Position Angle
154°
Star Colors
A: White
B: Yellow
Discoverer
EDG 2
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 17.9″ · PA: 154° · 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
A is SB, 5.7, 7.7v sep. 0.0004". Visual companions 12.0 at 13", 8.6 at 35".
ADS 3709A, B0.5, B9.5, 58.31d, K 36.7k/s, V0 +16.2k/s, asini 28.9.
Cas-Tau OB1.
Shell star. H alpha double in emission.
Survey Image
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