Theta Lib

HIP 77853; Theta Lib; 46 Lib DoubleStar Lib Visible Level 6 Professional/Research - Requires steady seeing

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Physical Properties

Magnitude 4.15

Spectral Type G8.5IIIb

Star Color Orange (B-V 1.02)

Distance 90.6 ly

Position & Identifiers

RA 15h 53m 49.5s

Dec -16° 43' 46.0"

Constellation Lib

HR 5908

HIP 77853

Bayer Theta

Flamsteed 46 Lib

Visibility

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Multiple Star System

Separation 0.1″

Companion Mag 5.1

Position Angle -1°

Star Colors A: Orange

Discoverer OCC 985

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 0.1″ · PA: -1° · 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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