When is the best time to observe HIP 31765?

HIP 31765 is best observed from November through January, with peak visibility during December when it transits around midnight in the Northern Hemisphere.

Where is HIP 31765 located in the sky?

HIP 31765 lies in the constellation Puppis at right ascension 06h 39m and declination -48° 13′.

What telescope do I need to split HIP 31765?

Splitting HIP 31765 requires an aperture of roughly 60 mm or larger — the components are separated by about 12.9″ at magnitudes near 4.9. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 31765 — Double Star in Puppis

Observable Double Star Excellent (64/100)

Sep: 12.9", Companion: mag 7.4

Magnitude 4.9^m DoubleStar Puppis (Pup) Visible

Star Map + List + Plan

Observe

1Physical Properties

Magnitude 4.93

Spectral Type G8III giant

Star Color Orange (B-V 0.87)

Distance 272 ly

2Position & Identifiers

RA 06h 38m 37.6s

Dec -48° 13' 13.0"

Constellation Puppis (Pup)

HR 2462

HIP 31765

HD 47973

SAO 218093

SIMBAD

3How easy to split?

Primary 4.9 mag Companion 7.4 mag Separation 12.9″

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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 Nov – Jan (peak: Dec)

5Multiple Star System

Separation 12.9″

Companion Mag 7.4

Position Angle 321°

Star Colors A: Orange

Discoverer DUN 31

Notes

Binary. Companion A0.

Separation over time

Measured 1826 → 2023 (197 y)

Separation drift 12.3" → 12.9" (+0.60")

Rate +0.0030" / y

PA drift 319° → 321° (+2°, +0.010°/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.