126 Tau
HIP 26777; 126 Tau
DoubleStar
Tau
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.86
Variable Type
Beta Cephei (Pulsating)
Spectral Type
B3IV
Star Color
Blue-white
(B-V -0.13)
Distance
233.0 ly
Position & Identifiers
RA
05h 41m 17.7s
Dec
+16° 32' 02.0"
Constellation
Tau
HR
1946
HIP
26777
Flamsteed
126 Tau
Double Cat
4265
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Visibility
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Multiple Star System
Separation
0.1″
Companion Mag
6.6
Companion Sp
B7V
Position Angle
273°
Star Colors
A: Blue-white
B: Blue-white
Discoverer
BU 1007
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: 273° · N up, E left
Unresolved · 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
ADS 4265B, Beta C? 6.2 - 7.0v.
5.3 B3IV, 5.9 B3V, 95.36y, a = 0.357". Equal components. Combined mag., colors.
Member of the local association (Pleiades group); Cas-Tau OB1.
0.004".
Survey Image
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