Dheneb

HIP 5364; Eta Cet; 31 Cet

HIP 5364; Eta Cet; 31 Cet DoubleStar Cet Visible Level 3 Medium telescope (6-8") - Requires steady seeing

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Physical Properties

Magnitude 3.45

Spectral Type K1III

Star Color Red (B-V 1.16)

Temperature 8519 K

Radius 203.0 R☉

Distance 123.9 ly

Position & Identifiers

RA 01h 08m 35.4s

Dec -10° 10' 56.0"

Constellation Cet

HR 334

HIP 5364

Bayer Eta

Flamsteed 31 Cet

Visibility

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Multiple Star System

Separation 259.3″

Companion Mag 10.5

Position Angle 305°

Star Colors A: Red

Discoverer BUP 16

Eyepiece View

Telescope Eyepiece

32x Dawes: 1.9″ TFOV: 1.6°

Seeing

Scale Realistic = true angular size

Sep: 259.3″ · PA: 305° · N up, E left

Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″

Size Comparison

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

Alternative Names

Dheneb; Deneb; Deneb Algenubi.

Survey Image

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