When is the best time to observe HIP 77454?

HIP 77454 is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is HIP 77454 located in the sky?

HIP 77454 lies in the constellation Norma at right ascension 15h 49m and declination -52° 26′.

What telescope do I need to split HIP 77454?

Splitting HIP 77454 requires an aperture of roughly 430 mm or larger — the components are separated by about 1.3″ at magnitudes near 6.1. The companion is about 4.2 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 77454 — Double Star in Norma

Magnitude 6.1^m DoubleStar Norma (Nor) Visible

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1Physical Properties

Magnitude 6.07

Spectral Type K2-3III

Star Color Orange (B-V 1.38) (reddened by dust)

2Position & Identifiers

RA 15h 48m 50.3s

Dec -52° 26' 17.0"

Constellation Norma (Nor)

HR 5865

HIP 77454

HD 140979

SAO 243001

SIMBAD

3How easy to split?

Primary 6.1 mag Companion 10.3 mag Separation 1.3″

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

Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

To reach "Medium" at Bortle 3, you'd need at least a 430 mm reflector.

4Visibility

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Best season Apr – Jun (peak: May)

5Multiple Star System

Separation 1.3″

Companion Mag 10.3

Position Angle 282°

Star Colors A: Orange (reddened by dust)

Discoverer B 1792

Separation over time

Measured 1931 → 2016 (85 y)

Separation drift 1.2" → 1.3" (+0.10")

Rate +0.0012" / y

PA drift 292° → 282° (-10°, -0.118°/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.