133 Tau
HIP 27364; 133 Tau
DoubleStar
Tau
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.29
Spectral Type
B2IV-V
Star Color
Blue
(B-V -0.17)
Position & Identifiers
RA
05h 47m 42.9s
Dec
+13° 53' 59.0"
Constellation
Tau
HR
1993
HIP
27364
Flamsteed
133 Tau
Double Cat
4381
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Visibility
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Multiple Star System
Components
3
Component IDs
AC
Separation
18.0″
Companion Mag
12.2
Position Angle
298°
Star Colors
A: Blue
Discoverer
HJ 3279
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 18.0″ · PA: 298° · 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
Component B optical.
Member of the local association (Pleiades group); Cas-Tau OB1.
Survey Image
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