Zeta Del

HIP 101589; Zeta Del; 4 Del DoubleStar Del Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 4.68

Spectral Type A3V

Star Color White (B-V 0.11)

Distance 217.4 ly

Position & Identifiers

RA 20h 35m 18.5s

Dec +14° 40' 27.0"

Constellation Del

HR 7871

HIP 101589

Bayer Zeta

Flamsteed 4 Del

Visibility

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Multiple Star System

Separation 13.5″

Companion Mag 15.3

Companion Sp L5

Position Angle 143°

Star Colors A: White

Discoverer DRS 32

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 13.5″ · PA: 143° · 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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