Iota Oph

HIP 82673; Iota Oph; 25 Oph DoubleStar Oph Visible Level 6 Professional/Research - Requires steady seeing

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Physical Properties

Magnitude 4.38

Spectral Type B8V

Star Color Blue-white (B-V -0.08)

Distance 112.5 ly

Position & Identifiers

RA 16h 54m 00.5s

Dec +10° 09' 55.0"

Constellation Oph

HR 6281

HIP 82673

Bayer Iota

Flamsteed 25 Oph

Visibility

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Multiple Star System

Separation 0.4″

Companion Mag 8.7

Position Angle 76°

Star Colors A: Blue-white B: Yellow

Discoverer DCH 120

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 0.4″ · PA: 76° · 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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