51 Tau
HIP 20087; 51 Tau
DoubleStar
Tau
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
5.65
Spectral Type
F0V
Star Color
Yellow-white
(B-V 0.28)
Position & Identifiers
RA
04h 18m 23.2s
Dec
+21° 34' 45.0"
Constellation
Tau
HR
1331
HIP
20087
Flamsteed
51 Tau
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Visibility
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Multiple Star System
Components
3
Separation
158.7″
Companion Mag
10.3
Position Angle
61°
Star Colors
A: Yellow-white
Discoverer
BUP 52
Eyepiece View
32x
Dawes: 1.9″
TFOV: 1.6°
Realistic = true angular size
Sep: 158.7″ · PA: 61° · 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
Visual primary is speckle-interferometric double, sep. 0.076". Visual companion 10.7v at 166".
4035d, K 9.1k/s, V0 +38.3k/s, asini 475. Resolved by speckle interferometry 1977, sep. 0.08"; 1983.93, sep. 0.15".
In Taurus cluster; Mel 25 #24; the Hyades.
Survey Image
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