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70 Tau

HIP 20661; 70 Tau Star Tau Visible Level 2 Small telescope (4")
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Physical Properties

Magnitude 6.46
Spectral Type F7V
Star Color Yellow (B-V 0.49)
Distance 86 ly

Position & Identifiers

RA 04h 25m 37.3s
Dec +15° 56' 27.0"
Constellation Tau
HR 1391
HIP 20661
Flamsteed 70 Tau

Visibility

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Multiple Star System

Components 3
Component IDs AP
Separation 129.5″
Companion Mag 13.4
Position Angle 339°
Star Colors A: Yellow
Discoverer BUP 57

Size Comparison

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Stellar Lifecycle

Spectral Classification

Hertzsprung-Russell Diagram

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Blackbody Spectrum

Stellar Absorption Spectrum

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Stellar Fusion

Stellar Notes

AP 7.2 dF5, 7.2, 13.15y, a = 0.133"; occultation binary. Component B, 12.4v at 126". Speckle interferometric sep. of | AP 0.093" 1980.94; 0.094" 1983.93.
Open cluster Mel 25 #57; the Hyades.

Survey Image

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