When is the best time to observe HIP 25397?

HIP 25397 is best observed from November through January, with peak visibility during December when it transits around midnight in the Northern Hemisphere.

Where is HIP 25397 located in the sky?

HIP 25397 lies in the constellation Lepus at right ascension 05h 26m and declination -19° 42′.

What telescope do I need to split HIP 25397?

Splitting HIP 25397 requires an aperture of roughly 60 mm or larger — the components are separated by about 26.6″ at magnitudes near 5.9. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 25397 — Double Star in Lepus

Observable Double Star Good (59/100)

Sep: 26.6", Companion: mag 7.3

Magnitude 5.9^m DoubleStar Lepus (Lep) Visible

Star Map + List + Plan Star Hop

Observe

1Physical Properties

Magnitude 5.89

Spectral Type F2V

Star Color Yellow-white (B-V 0.40)

2Position & Identifiers

RA 05h 25m 59.8s

Dec -19° 41' 44.0"

Constellation Lepus (Lep)

HR 1812

HIP 25397

HD 35736

SAO 150442

Double Cat 4034

SIMBAD

3How easy to split?

Primary 5.9 mag Companion 7.3 mag Separation 26.6″

Sign in and configure your equipment and default location to see a personalized row.

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

Set a location in User Settings to see visibility data.

Best season Nov – Jan (peak: Dec)

5Multiple Star System

Separation 26.6″

Companion Mag 7.3

Position Angle 317°

Star Colors A: Yellow-white B: Yellow

Discoverer HJ 3759

Notes

Companion F5.

Separation over time

Measured 1837 → 2019 (182 y)

Separation drift 26.8" → 26.6" (-0.20")

Rate -0.0011" / y

PA drift 317° → 317° (+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.