When is the best time to observe HIP 112670?

HIP 112670 is best observed from July through September, with peak visibility during August when it transits around midnight in the Northern Hemisphere.

Where is HIP 112670 located in the sky?

HIP 112670 lies in the constellation Cepheus at right ascension 22h 49m and declination +68° 34′.

What telescope do I need to split HIP 112670?

Splitting HIP 112670 requires an aperture of roughly 100 mm or larger — the components are separated by about 4.7″ at magnitudes near 6.2. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 112670 — Double Star in Cepheus

Magnitude 6.2^m DoubleStar Cepheus (Cep) Visible

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Observe

1Physical Properties

Magnitude 6.19

Spectral Type F5V

Distance 130 ly

2Position & Identifiers

RA 22h 49m 00.7s

Dec +68° 34' 13.0"

Constellation Cepheus (Cep)

HR 8687

HIP 112670

HD 216172

SAO 20259

Double Cat 16291

SIMBAD

3How easy to split?

Primary 6.2 mag Companion 7.0 mag Separation 4.7″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Easy	Easy	Easy
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 Triple C: optical

Components 3 (triple)

Component IDs AB

Separation 4.7″

Companion Mag 7.0

Companion Sp F5V

Position Angle 55°

Star Colors A: Yellow-white B: Yellow-white

Discoverer STF2947

Notes

AB binary. B is dF5. A is astrometric binary, 4.3y. C is 10.2v at 111".

Separation over time

Measured 1828 → 2021 (193 y)

Separation drift 3.5" → 4.7" (+1.20")

Rate +0.0062" / y

PA drift 79° → 55° (-24°, -0.124°/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.