23 Oph

HIP 82730; 23 Oph DoubleStar Oph Visible Level 6 Professional/Research - Requires steady seeing

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Physical Properties

Magnitude 5.25

Spectral Type K2III

Star Color Orange (B-V 1.08)

Distance 155.3 ly

Position & Identifiers

RA 16h 54m 35.7s

Dec -06° 09' 14.0"

Constellation Oph

HR 6280

HIP 82730

Flamsteed 23 Oph

Visibility

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Multiple Star System

Separation 0.5″

Companion Mag 9.9

Position Angle 264°

Star Colors A: Orange

Discoverer DSG 1

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 0.5″ · PA: 264° · 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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Survey Image

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