When is the best time to observe HIP 27517?

HIP 27517 is best observed from November through January, with peak visibility during December when it transits around midnight in the Northern Hemisphere.

Where is HIP 27517 located in the sky?

HIP 27517 lies in the constellation Lepus at right ascension 05h 50m and declination -14° 29′.

What telescope do I need to split HIP 27517?

Splitting HIP 27517 requires an aperture of roughly 100 mm or larger — the components are separated by about 2.2″ at magnitudes near 5.5. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 27517 — Double Star in Lepus

Observable Double Star Good (51/100)

Sep: 2.2", Companion: mag 8.2

Magnitude 5.5^m DoubleStar Lepus (Lep) Visible

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Observe

1Physical Properties

Magnitude 5.49

Spectral Type gG6

Star Color Orange (B-V 0.88)

Distance 362 ly

2Position & Identifiers

RA 05h 49m 36.5s

Dec -14° 29' 01.0"

Constellation Lepus (Lep)

HR 2021

HIP 27517

HD 39070

SAO 150845

Double Cat 4432

SIMBAD

3How easy to split?

Primary 5.5 mag Companion 8.2 mag Separation 2.2″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Hard	Hard	Hard
150 mm Newton 150mm Newt.	Medium	Medium	Medium
Celestron C8 (203 mm SCT) C8 203mm	Medium+	Medium+	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 2.2″

Companion Mag 8.2

Position Angle 179°

Star Colors A: Orange

Discoverer BU 94

Notes

CPM. Combined mag., color.

Separation over time

Measured 1873 → 2021 (148 y)

Separation drift 2.5" → 2.2" (-0.30")

Rate -0.0020" / y

PA drift 190° → 179° (-11°, -0.074°/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.