When is the best time to observe HIP 26345?

HIP 26345 is best observed from November through January, with peak visibility during December when it transits around midnight in the Northern Hemisphere.

Where is HIP 26345 located in the sky?

HIP 26345 lies in the constellation Orion at right ascension 05h 37m and declination -06° 04′.

What telescope do I need to split HIP 26345?

Splitting HIP 26345 requires an aperture of roughly 80 mm or larger — the components are separated by about 5.3″ at magnitudes near 5.7. The companion is about 3.5 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 26345 — Double Star in Orion

Magnitude 5.7^m DoubleStar Orion (Ori) Visible

Star Map + List + Plan Star Hop

Observe

1Physical Properties

Magnitude 5.72

Spectral Type B1V

Star Color Blue (B-V -0.22)

2Position & Identifiers

RA 05h 36m 35.7s

Dec -06° 03' 54.0"

Constellation Orion (Ori)

HR 1911

HIP 26345

HD 37209

SAO 132359

Double Cat 4212

SIMBAD

3How easy to split?

Primary 5.7 mag Companion 9.2 mag Separation 5.3″

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

Set a location in User Settings to see visibility data.

Best season Nov – Jan (peak: Dec)

5Multiple Star System

Separation 5.3″

Companion Mag 9.2

Position Angle 288°

Star Colors A: Blue B: Yellow-white

Discoverer STF 754

Notes

CPM. Combined mag., colors.

Separation over time

Measured 1830 → 2022 (192 y)

Separation drift 5.2" → 5.3" (+0.10")

Rate +0.0005" / y

PA drift 288° → 288° (+0°, +0.000°/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.