When is the best time to observe HIP 94720?

HIP 94720 is best observed from June through August, with peak visibility during July when it transits around midnight in the Northern Hemisphere.

Where is HIP 94720 located in the sky?

HIP 94720 lies in the constellation Aquila at right ascension 19h 16m and declination +14° 33′.

What telescope do I need to split HIP 94720?

Splitting HIP 94720 requires an aperture of roughly 80 mm or larger — the components are separated by about 8.2″ at magnitudes near 5.6. The companion is about 3.7 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 94720 — Double Star in Aquila

Magnitude 5.6^m DoubleStar Aquila (Aql) Visible

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Observe

1Physical Properties

Magnitude 5.63

Spectral Type B9.5V

Star Color Blue-white (B-V -0.02)

Distance 155 ly

2Position & Identifiers

RA 19h 16m 26.8s

Dec +14° 32' 41.0"

Constellation Aquila (Aql)

HR 7307

HIP 94720

HD 180555

SAO 104668

Double Cat 12248

SIMBAD

3How easy to split?

Primary 5.6 mag Companion 9.3 mag Separation 8.2″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Medium+	Medium+	Medium
150 mm Newton 150mm Newt.	Easy	Easy	Easy
Celestron C8 (203 mm SCT) 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 Quadruple

Components 4 (quadruple)

Component IDs AB

Separation 8.2″

Companion Mag 9.3

Position Angle 347°

Star Colors A: Blue-white

Discoverer STF2489

Notes

AB CPM, B is 9.07V, +0.14(B-V), -0.05(U-B), F8V or G0IV, optical? Speckle interferometry indicates a fourth companion | at 0.051" from A.

Separation over time

Measured 1828 → 2020 (192 y)

Separation drift 8.2" → 8.2" (+0.00")

Rate +0.0000" / y

PA drift 349° → 347° (-2°, -0.010°/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.