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42 Cet

Observable Double Star Fair (26/100)

Sep: 1.6", Companion: mag 7.0

HIP 6226; 42 Cet DoubleStar Cet Visible Level 4 Large telescope (10"+) - Requires steady seeing
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Physical Properties

Magnitude 5.87
Spectral Type G8III+A7V
Star Color Yellow (B-V 0.64)
Distance 362 ly

Position & Identifiers

RA 01h 19m 48.3s
Dec -00° 30' 32.0"
Constellation Cet
HR 385
HIP 6226
Flamsteed 42 Cet
Double Cat 1081

Visibility

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Multiple Star System

Components 3
Component IDs AxBC
Separation 1.6″
Companion Mag 7.0
Companion Sp G4III
Position Angle 21°
Star Colors A: Yellow B: Yellow

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 21° A (5.9) B (7.0)

Sep: 1.6″ · PA: 21° · 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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Stellar Fusion

Stellar Notes

BC 7.4, 7.6, 21.5y, a = 0.136". Combined spectrum A1V.
Also classified G4:III + A2:V and G5III-IV + A5V.

Survey Image

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