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Psi Aurigae — Double Star in Auriga

HIP 32480; Psi5 Aurigae; 56 Aurigae

Observable Double Star Good (56/100)

Sep: 28.2", Companion: mag 8.7

Magnitude 5.2m DoubleStar Auriga (Aur) Visible
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Observe

1Physical Properties

Magnitude 5.25
Spectral Type G0V
Star Color Yellow (B-V 0.56)
Distance 48 ly

2Position & Identifiers

RA 06h 46m 44.3s
Dec +43° 34' 39.0"
Constellation Auriga (Aur)
HR 2483
HIP 32480
HD 48682
SAO 41330
Bayer Psi5
Flamsteed 56 Aur
Double Cat 5425

3How easy to split?

Primary 5.3 mag Companion 8.7 mag Separation 28.2″
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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Easy Easy Medium+
150mm Newt. Easy Easy Easy
C8 203mm Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

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Best season Nov – Jan (peak: Dec)

5Multiple Star System B,C: optical

Separation 28.2″
Companion Mag 8.7
Position Angle 44°
Star Colors A: Yellow B: Orange
Discoverer SHJ 75
Companion orange, optical.

Separation over time

Measured 1782 → 2022 (240 y)
Separation drift 53.0" → 28.2" (-24.80")
Rate -0.1033" / y
PA drift 17° → 44° (+27°, +0.113°/y)

Apparent motion is significant on a human timescale — worth revisiting in a decade.

Measured from the WDS observational archive. No orbital solution has been derived — most likely the period is too long to fit an orbit to the available measurement arc.

Eyepiece View

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80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 44°

A: 5.2 · B: 8.7 · Sep: 28.2″ · PA: 44° · N up, E right

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

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Size Comparison

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Spectral Classification

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Stellar Lifecycle

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Blackbody Spectrum

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Stellar Absorption Spectrum

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Stellar Fusion

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Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

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