Beta Com

HIP 64394; Beta Com; 43 Com DoubleStar Com Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 4.26

Spectral Type F9.5V

Star Color Yellow (B-V 0.57)

Distance 27.2 ly

Position & Identifiers

RA 13h 11m 52.4s

Dec +27° 52' 41.0"

Constellation Com

HR 4983

HIP 64394

Bayer Beta

Flamsteed 43 Com

Visibility

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Multiple Star System

Separation 135.0″

Companion Mag 12.1

Position Angle 178°

Star Colors A: Yellow

Discoverer STT 578

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 135.0″ · PA: 178° · 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

Spectroscopic Binary

5 or more yrs.? Visual companion is optical.

Survey Image

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