When is the best time to observe HIP 112519?

HIP 112519 is best observed from July through September, with peak visibility during August when it transits around midnight in the Northern Hemisphere.

Where is HIP 112519 located in the sky?

HIP 112519 lies in the constellation Cepheus at right ascension 22h 47m and declination +83° 09′.

What telescope do I need to split HIP 112519?

Splitting HIP 112519 requires an aperture of roughly 100 mm or larger — the components are separated by about 3.9″ at magnitudes near 4.7. The companion is about 4.9 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 112519 — Double Star in Cepheus

Magnitude 4.7^m DoubleStar Cepheus (Cep) Visible

Star Map + List + Plan

Observe

1Physical Properties

Magnitude 4.74

Spectral Type K3III giant

Star Color Red (B-V 1.26)

2Position & Identifiers

RA 22h 47m 29.0s

Dec +83° 09' 14.0"

Constellation Cepheus (Cep)

HR 8702

HIP 112519

HD 216446

SAO 3794

Double Cat 16294

SIMBAD

3How easy to split?

Primary 4.7 mag Companion 9.6 mag Separation 3.9″

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

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 C: optical

Separation 3.9″

Companion Mag 9.6

Position Angle 39°

Star Colors A: Red

Discoverer STT 482

Separation over time

Measured 1850 → 2016 (166 y)

Separation drift 3.5" → 3.9" (+0.40")

Rate +0.0024" / y

PA drift 30° → 39° (+9°, +0.054°/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.