When is the best time to observe HIP 76143?

HIP 76143 is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is HIP 76143 located in the sky?

HIP 76143 lies in the constellation Libra at right ascension 15h 33m and declination -24° 29′.

What telescope do I need to split HIP 76143?

Splitting HIP 76143 requires an aperture of roughly 80 mm or larger — the components are separated by about 9.3″ at magnitudes near 7.0. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 76143 — Double Star in Libra

Magnitude 7.0^m DoubleStar Libra (Lib) Visible

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Observe

1Physical Properties

Magnitude 7.00

Spectral Type A3+F0V:

Star Color White (B-V 0.27)

2Position & Identifiers

RA 15h 33m 09.1s

Dec -24° 29' 22.0"

Constellation Libra (Lib)

HR 5765

HIP 76143

HD 138488

SAO 183565

Double Cat 9689

SIMBAD

3How easy to split?

Primary 7.0 mag Companion 7.0 mag Separation 9.3″

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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

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Best season Apr – Jun (peak: May)

5Multiple Star System Triple

Components 3 (triple)

Component IDs AxBC

Separation 9.3″

Companion Mag 7.0

Companion Sp F8

Position Angle 302°

Star Colors A: White C: Yellow

Discoverer LAL 123

Notes

BC 7.8, 8.0, combined F0V 54.3y, a = 0.225" or 57.32y, a = 0.245". This pair binary about component A at 9.3".

Separation over time

Measured 1825 → 2016 (191 y)

Separation drift 9.2" → 9.3" (+0.10")

Rate +0.0005" / y

PA drift 298° → 302° (+4°, +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.