When is the best time to observe HIP 80719?

HIP 80719 is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is HIP 80719 located in the sky?

HIP 80719 lies in the constellation Ophiuchus at right ascension 16h 29m and declination -08° 08′.

What telescope do I need to split HIP 80719?

Splitting HIP 80719 requires an aperture of roughly 80 mm or larger — the components are separated by about 5.6″ at magnitudes near 6.5. The companion is about 3.3 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 80719 — Double Star in Ophiuchus

Magnitude 6.5^m DoubleStar Ophiuchus (Oph) Visible

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Observe

1Physical Properties

Magnitude 6.48

Spectral Type F2V

Star Color Yellow-white (B-V 0.40)

2Position & Identifiers

RA 16h 28m 48.9s

Dec -08° 07' 44.0"

Constellation Ophiuchus (Oph)

HR 6137

HIP 80719

HD 148515

SAO 141195

Double Cat 10072

SIMBAD

3How easy to split?

Primary 6.5 mag Companion 9.7 mag Separation 5.6″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Medium+	Medium	Medium
150 mm Newton 150mm Newt.	Easy	Easy	Medium+
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 C: optical

Components 3 (triple)

Component IDs AB

Separation 5.6″

Companion Mag 9.7

Position Angle 297°

Star Colors A: Yellow-white B: Orange

Discoverer STF2048

Notes

AB binary.

Separation over time

Measured 1831 → 2016 (185 y)

Separation drift 4.7" → 5.6" (+0.90")

Rate +0.0049" / y

PA drift 303° → 297° (-6°, -0.032°/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.