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HIP 94624 — Double Star in Aquila

Observable Double Star Good (49/100)

Sep: 89.6", Companion: mag 7.6

Magnitude 5.6m DoubleStar Aquila (Aql) Visible
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Observe

1Physical Properties

Magnitude 5.57
Spectral Type G8II-III bright giant
Star Color Orange (B-V 1.07)

2Position & Identifiers

RA 19h 15m 20.1s
Dec +15° 05' 01.0"
Constellation Aquila (Aql)
HR 7300
HIP 94624
HD 180262
SAO 104655

3How easy to split?

Primary 5.6 mag Companion 7.6 mag Separation 89.6″
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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Easy Easy Easy
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 Jun – Aug (peak: Jul)

5Multiple Star System

Separation 89.6″
Companion Mag 7.6
Position Angle 267°
Star Colors A: Orange
Discoverer STTA178
Binary. Companion A1V.

Separation over time

Measured 1875 → 2018 (143 y)
Separation drift 89.7" → 89.6" (-0.10")
Rate -0.0007" / y
PA drift 268° → 267° (-1°, -0.007°/y)

Essentially fixed on human timescales — the same view your grandchildren will see.

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 267°

A: 5.6 · B: 7.6 · Sep: 89.6″ · PA: 267° · N up, E right

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

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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

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

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Stellar Fusion

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