When is the best time to observe HIP 28930?

HIP 28930 is best observed from November through January, with peak visibility during December when it transits around midnight in the Northern Hemisphere.

Where is HIP 28930 located in the sky?

HIP 28930 lies in the constellation Auriga at right ascension 06h 06m and declination +29° 31′.

What telescope do I need to split HIP 28930?

Splitting HIP 28930 requires an aperture of roughly 60 mm or larger — the components are separated by about 10.0″ at magnitudes near 6.1. The companion is about 4.4 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 28930 — Double Star in Auriga

Magnitude 6.1^m DoubleStar Auriga (Aur) Visible

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Observe

1Physical Properties

Magnitude 6.08

Spectral Type M3II+F7V bright giant

Star Color Red (B-V 1.73)

2Position & Identifiers

RA 06h 06m 22.5s

Dec +29° 30' 45.0"

Constellation Auriga (Aur)

HR 2146

HIP 28930

HD 41429

SAO 77958

Double Cat 4673

SIMBAD

3How easy to split?

Primary 6.1 mag Companion 10.5 mag Separation 10.0″

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

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 10.0″

Companion Mag 10.5

Position Angle 210°

Star Colors A: Red

Discoverer STT 129

Notes

CPM. Companion 10.72V, +0.90(B-V), +0.25(U-B), F7V.

Separation over time

Measured 1848 → 2016 (168 y)

Separation drift 9.6" → 10.0" (+0.40")

Rate +0.0024" / y

PA drift 208° → 210° (+2°, +0.012°/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.