Sigma Cen

HIP 60823; Sigma Cen DoubleStar Cen Visible Level 5 Expert level - Requires steady seeing

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Physical Properties

Magnitude 3.91

Spectral Type B2 V

Star Color Blue (B-V -0.19)

Distance 411.6 ly

Position & Identifiers

RA 12h 28m 02.4s

Dec -50° 13' 50.0"

Constellation Cen

HR 4743

HIP 60823

Bayer Sigma

Visibility

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Multiple Star System

Separation 0.1″

Companion Mag 6.6

Position Angle -1°

Star Colors A: Blue

Discoverer RIZ 3

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

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

Stellar Notes

Group/Cluster

Doubtful member of the Sco-Cen cluster; lower Cen group of Sco-Cen assoc.

Survey Image

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