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HIP 92024 — Double Star in Pavo

Magnitude 4.8m DoubleStar Pavo (Pav) Visible
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1Physical Properties

Magnitude 4.79
Spectral Type A5IV-V subgiant
Star Color Yellow-white (B-V 0.20)
Distance 93 ly

2Position & Identifiers

RA 18h 45m 26.9s
Dec -64° 52' 17.0"
Constellation Pavo (Pav)
HR 7012
HIP 92024
HD 172555
SAO 254358

3How easy to split?

Primary 4.8 mag Companion 10.1 mag Separation 71.3″
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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Medium+ Medium Hard+
150mm Newt. Easy Easy Medium+
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 May – Jul (peak: Jun)

5Multiple Star System

Separation 71.3″
Companion Mag 10.1
Companion Sp K5V
Position Angle 65°
Star Colors A: Yellow-white B: Red
Discoverer SKF 105

Separation over time

Measured 1894 → 2015 (121 y)
Separation drift 72.2" → 71.3" (-0.90")
Rate -0.0074" / y
PA drift 65° → 65° (+0°, +0.000°/y)

Slow change over generations — observable in lifetime comparisons.

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 65°

A: 4.8 · B: 10.1 · Sep: 71.3″ · PA: 65° · 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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Hertzsprung-Russell Diagram

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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

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