Eta Ser

HIP 89962; Eta Ser; 58 Ser DoubleStar Ser Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 3.26

Spectral Type K0III-IV

Star Color Orange (B-V 0.94)

Distance 60.5 ly

Position & Identifiers

RA 18h 21m 18.6s

Dec -02° 53' 56.0"

Constellation Ser

HR 6869

HIP 89962

Bayer Eta

Flamsteed 58 Ser

Visibility

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Multiple Star System

Separation 251.4″

Companion Mag 10.9

Position Angle 54°

Star Colors A: Orange

Discoverer STFB 8

Eyepiece View

Telescope Eyepiece

32x Dawes: 1.9″ TFOV: 1.6°

Seeing

Scale Realistic = true angular size

Sep: 251.4″ · PA: 54° · 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

Spectral

Also classified K0III-IV.

Survey Image

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