When is the best time to observe HIP 25810?

HIP 25810 is best observed from November through January, with peak visibility during December when it transits around midnight in the Northern Hemisphere.

Where is HIP 25810 located in the sky?

HIP 25810 lies in the constellation Auriga at right ascension 05h 31m and declination +39° 50′.

What telescope do I need to split HIP 25810?

Splitting HIP 25810 requires an aperture of roughly 60 mm or larger — the components are separated by about 75.2″ at magnitudes near 6.4. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 25810 — Double Star in Auriga

Magnitude 6.4^m DoubleStar Auriga (Aur) Visible

Star Map + List + Plan Star Hop

Observe

1Physical Properties

Magnitude 6.37

Spectral Type G9III giant

Star Color Orange (B-V 0.97)

2Position & Identifiers

RA 05h 30m 45.1s

Dec +39° 49' 33.0"

Constellation Auriga (Aur)

HR 1825

HIP 25810

HD 36041

SAO 58129

SIMBAD

3How easy to split?

Primary 6.4 mag Companion 7.7 mag Separation 75.2″

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 75.2″

Companion Mag 7.7

Position Angle 277°

Star Colors A: Orange

Discoverer STTA 63

Notes

Companion 7.62V, +0.94(B-V), +0.69(U-B), G8III.

Separation over time

Measured 1874 → 2017 (143 y)

Separation drift 75.1" → 75.2" (+0.10")

Rate +0.0007" / y

PA drift 274° → 277° (+3°, +0.021°/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.