When is the best time to observe HIP 84792?

HIP 84792 is best observed from May through July, with peak visibility during June when it transits around midnight in the Northern Hemisphere.

Where is HIP 84792 located in the sky?

HIP 84792 lies in the constellation Ophiuchus at right ascension 17h 20m and declination -17° 45′.

What telescope do I need to split HIP 84792?

Splitting HIP 84792 requires an aperture of roughly 100 mm or larger — the components are separated by about 2.4″ at magnitudes near 6.0. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 84792 — Double Star in Ophiuchus

Magnitude 6.0^m DoubleStar Ophiuchus (Oph) Visible

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Observe

1Physical Properties

Magnitude 6.02

Spectral Type A2Vnn

Star Color White (B-V 0.04)

Distance 272 ly

2Position & Identifiers

RA 17h 19m 53.3s

Dec -17° 45' 23.0"

Constellation Ophiuchus (Oph)

HR 6435

HIP 84792

HD 156717

SAO 160462

Double Cat 10465

SIMBAD

3How easy to split?

Primary 6.0 mag Companion 7.6 mag Separation 2.4″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Hard+	Hard+	Hard+
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 May – Jul (peak: Jun)

5Multiple Star System Triple

Components 3 (triple)

Component IDs AB

Separation 2.4″

Companion Mag 7.6

Position Angle 263°

Star Colors A: White B: Yellow-white

Discoverer BU 126

Notes

AB binary; A3, A6. C, 11.7v at 12" CPM.

Separation over time

Measured 1875 → 2021 (146 y)

Separation drift 1.7" → 2.4" (+0.70")

Rate +0.0048" / y

PA drift 261° → 263° (+2°, +0.014°/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.