3 Ser

HIP 74649; 3 Ser DoubleStar Ser Visible Level 5 Expert level - Requires steady seeing

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Physical Properties

Magnitude 5.33

Spectral Type K0III

Star Color Orange (B-V 1.09)

Distance 155.3 ly

Position & Identifiers

RA 15h 15m 11.4s

Dec +04° 56' 22.0"

Constellation Ser

HR 5675

HIP 74649

Flamsteed 3 Ser

Visibility

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Multiple Star System

Separation 0.3″

Companion Mag 7.9

Position Angle 266°

Star Colors A: Orange

Discoverer HDS2143

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 0.3″ · PA: 266° · 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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