Tau And

HIP 7818; Tau And; 53 And DoubleStar And Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 4.94

Spectral Type B8III

Star Color Blue-white (B-V -0.09)

Position & Identifiers

RA 01h 40m 34.8s

Dec +40° 34' 37.0"

Constellation And

HR 477

HIP 7818

Bayer Tau

Flamsteed 53 And

Double Cat 1311

Visibility

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Multiple Star System

Separation 52.9″

Companion Mag 11.5

Position Angle 330°

Star Colors A: Blue-white

Discoverer BU 1362

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 52.9″ · PA: 330° · 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

Double Star

CPM. Component B, 11.53V, +0.65(B-V), +0.04(U-B).

Survey Image

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