When is the best time to observe HIP 79357?

HIP 79357 is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is HIP 79357 located in the sky?

HIP 79357 lies in the constellation Hercules at right ascension 16h 12m and declination +42° 22′.

What telescope do I need to split HIP 79357?

Splitting HIP 79357 requires an aperture of roughly 60 mm or larger — the components are separated by about 23.2″ at magnitudes near 5.9. The companion is about 4.9 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 79357 — Double Star in Hercules

Magnitude 5.9^m DoubleStar Hercules (Her) Visible

Star Map + List + Plan Star Hop

Observe

1Physical Properties

Magnitude 5.87

Spectral Type K4II+F6-8V bright giant

Star Color Red (B-V 1.45)

2Position & Identifiers

RA 16h 11m 47.6s

Dec +42° 22' 28.0"

Constellation Hercules (Her)

HR 6050

HIP 79357

HD 145931

SAO 45957

Double Cat 9962

SIMBAD

3How easy to split?

Primary 5.9 mag Companion 10.7 mag Separation 23.2″

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

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 Apr – Jun (peak: May)

5Multiple Star System

Separation 23.2″

Companion Mag 10.7

Position Angle 44°

Star Colors A: Red

Discoverer STF2024

Notes

Companion, 10.73V, +0.58(B-V), +0.08(U-V), F8IV:, CPM.

Separation over time

Measured 1783 → 2023 (240 y)

Separation drift 20.9" → 23.2" (+2.30")

Rate +0.0096" / y

PA drift 44° → 44° (+0°, +0.000°/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.