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Rho Tau

HIP 21273; Rho Tau; 86 Tau Star Tau Visible Level 2 Small telescope (4")
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Physical Properties

Magnitude 4.65
Range 4.9 - 4.91
Period 1.6 hours
Variable Type Delta Scuti (Low Amplitude)
Spectral Type A8V
Star Color Yellow-white (B-V 0.25)
Distance 125.4 ly

Position & Identifiers

RA 04h 33m 50.9s
Dec +14° 50' 40.0"
Constellation Tau
HR 1444
HIP 21273
Bayer Rho
Flamsteed 86 Tau
Variable ID Rho Tau

Visibility

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Multiple Star System

Separation 0.0″
Position Angle 305°
Star Colors A: Yellow-white
Discoverer CIA 51

Eyepiece View

15x Dawes: 1.9″ TFOV: 3.3°
Realistic = true angular size
N E 305° A (4.7) B (6.7)

Sep: 0.0″ · PA: 305° · 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

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Stellar Notes

488.5d, K 18.5k/s, V0 +30.3k/s, asini 124. Unresolved by speckle interferometry.
In Hyades cluster; Mel 25 #95.

Survey Image

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