When is the best time to observe HIP 77562?

HIP 77562 is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is HIP 77562 located in the sky?

HIP 77562 lies in the constellation Norma at right ascension 15h 50m and declination -53° 13′.

What telescope do I need to split HIP 77562?

Splitting HIP 77562 requires an aperture of roughly 60 mm or larger — the components are separated by about 28.6″ at magnitudes near 5.8. The companion is about 6.0 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 77562 — Double Star in Norma

Magnitude 5.8^m DoubleStar Norma (Nor) Visible

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Observe

1Physical Properties

Magnitude 5.77

Spectral Type B9Vn:

Star Color Blue-white (B-V -0.08)

2Position & Identifiers

RA 15h 50m 06.9s

Dec -53° 12' 34.0"

Constellation Norma (Nor)

HR 5869

HIP 77562

HD 141168

SAO 243022

SIMBAD

3How easy to split?

Primary 5.8 mag Companion 11.8 mag Separation 28.6″

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

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

Separation 28.6″

Companion Mag 11.8

Companion Sp B9.5V

Position Angle 117°

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

Discoverer HJ 4805

Separation over time

Measured 1836 → 2016 (180 y)

Separation drift 32.0" → 28.6" (-3.40")

Rate -0.0189" / y

PA drift 132° → 117° (-15°, -0.083°/y)

Apparent motion is significant on a human timescale — worth revisiting in a decade.

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.