When is the best time to observe HIP 113311?

HIP 113311 is best observed from July through September, with peak visibility during August when it transits around midnight in the Northern Hemisphere.

Where is HIP 113311 located in the sky?

HIP 113311 lies in the constellation Pegasus at right ascension 22h 57m and declination +11° 51′.

What telescope do I need to split HIP 113311?

Splitting HIP 113311 requires an aperture of roughly 100 mm or larger — the components are separated by about 4.0″ at magnitudes near 6.5. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 113311 — Double Star in Pegasus

Magnitude 6.5^m DoubleStar Pegasus (Peg) Visible

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Observe

1Physical Properties

Magnitude 6.51

Spectral Type A3V s

Star Color White (B-V 0.18)

Distance 408 ly

2Position & Identifiers

RA 22h 56m 51.5s

Dec +11° 50' 54.0"

Constellation Pegasus (Peg)

HR 8724

HIP 113311

HD 216900

SAO 108275

Double Cat 16389

SIMBAD

3How easy to split?

Primary 6.5 mag Companion 9.1 mag Separation 4.0″

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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 Jul – Sep (peak: Aug)

5Multiple Star System

Separation 4.0″

Companion Mag 9.1

Position Angle 15°

Star Colors A: White B: Yellow

Discoverer STF2958

Separation over time

Measured 1831 → 2016 (185 y)

Separation drift 3.9" → 4.0" (+0.10")

Rate +0.0005" / y

PA drift 7° → 15° (+8°, +0.043°/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.