9 Lac

HIP 111674; 9 Lac DoubleStar Lac Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 4.63

Spectral Type A8IV

Star Color Yellow-white (B-V 0.24)

Distance 148.2 ly

Position & Identifiers

RA 22h 37m 22.4s

Dec +51° 32' 43.0"

Constellation Lac

HR 8613

HIP 111674

Flamsteed 9 Lac

Visibility

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Multiple Star System

Separation 14.8″

Companion Mag 9.8

Position Angle 215°

Star Colors A: Yellow-white

Discoverer DRS 69

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 14.8″ · PA: 215° · 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

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Survey Image

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