Tau Aqr

HIP 112716; Tau2 Aqr; 71 Aqr

HIP 112716; Tau2 Aqr; 71 Aqr DoubleStar Aqr Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 4.01

Spectral Type M0III

Star Color Red (B-V 1.57)

Distance 155.3 ly

Position & Identifiers

RA 22h 49m 35.5s

Dec -13° 35' 33.0"

Constellation Aqr

HR 8679

HIP 112716

Bayer Tau2

Flamsteed 71 Aqr

Visibility

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Multiple Star System

Separation 132.4″

Companion Mag 9.9

Position Angle 297°

Star Colors A: Red

Discoverer H 6 97

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 132.4″ · PA: 297° · 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

Alternative Names

Sometimes called Tau2 Aqr; usually without superscript.

Survey Image

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