When is the best time to observe HIP 73111?

HIP 73111 is best observed from March through May, with peak visibility during April when it transits around midnight in the Northern Hemisphere.

Where is HIP 73111 located in the sky?

HIP 73111 lies in the constellation Lupus at right ascension 14h 57m and declination -47° 53′.

What telescope do I need to split HIP 73111?

Splitting HIP 73111 requires an aperture of roughly 100 mm or larger — the components are separated by about 2.1″ at magnitudes near 5.6. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 73111 — Double Star in Lupus

Observable Double Star Good (52/100)

Sep: 2.1", Companion: mag 6.8

Magnitude 5.6^m DoubleStar Lupus (Lup) Visible

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Observe

1Physical Properties

Magnitude 5.64

Spectral Type B9V

Star Color Blue-white (B-V -0.04)

2Position & Identifiers

RA 14h 56m 32.0s

Dec -47° 52' 45.0"

Constellation Lupus (Lup)

HR 5559

HIP 73111

HD 131657

SAO 225306

SIMBAD

3How easy to split?

Primary 5.6 mag Companion 6.8 mag Separation 2.1″

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	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 Mar – May (peak: Apr)

5Multiple Star System

Separation 2.1″

Companion Mag 6.8

Position Angle 281°

Star Colors A: Blue-white B: Yellow-white

Discoverer HJ 4715

Notes

CPM? Combined mag., colors.

Separation over time

Measured 1835 → 2016 (181 y)

Separation drift 3.0" → 2.1" (-0.90")

Rate -0.0050" / y

PA drift 278° → 281° (+3°, +0.017°/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.