When is the best time to observe HIP 93371?

HIP 93371 is best observed from June through August, with peak visibility during July when it transits around midnight in the Northern Hemisphere.

Where is HIP 93371 located in the sky?

HIP 93371 lies in the constellation Corona Australis at right ascension 19h 01m and declination -37° 04′.

What telescope do I need to split HIP 93371?

Splitting HIP 93371 requires an aperture of roughly 60 mm or larger — the components are separated by about 12.8″ at magnitudes near 6.4. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 93371 — Double Star in Corona Australis

Magnitude 6.4^m DoubleStar Corona Australis (CrA) Visible

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Observe

1Physical Properties

Magnitude 6.40

Spectral Type B8V-IV

Star Color Blue-white (B-V -0.03)

2Position & Identifiers

RA 19h 01m 04.3s

Dec -37° 03' 43.0"

Constellation Corona Australis (CrA)

HR 7170

HIP 93371

HD 176270

SAO 210816

SIMBAD

3How easy to split?

Primary 6.4 mag Companion 6.6 mag Separation 12.8″

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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 Jun – Aug (peak: Jul)

5Multiple Star System

Separation 12.8″

Companion Mag 6.6

Companion Sp B9V

Position Angle 280°

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

Discoverer BSO 14

Notes

CPM with HR 7169.

Separation over time

Measured 1837 → 2018 (181 y)

Separation drift 13.0" → 12.8" (-0.20")

Rate -0.0011" / y

PA drift 283° → 280° (-3°, -0.017°/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.