When is the best time to observe Zeta Pavonis?

Zeta Pavonis is best observed from May through July, with peak visibility during June when it transits around midnight in the Northern Hemisphere.

Where is Zeta Pavonis located in the sky?

Zeta Pavonis lies in the constellation Pavo at right ascension 18h 43m and declination -71° 26′.

What telescope do I need to split Zeta Pavonis?

Splitting Zeta Pavonis requires an aperture of roughly 60 mm or larger — the components are separated by about 69.6″ at magnitudes near 4.0. The companion is about 8.0 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

Zeta Pavonis — Double Star in Pavo

Magnitude 4.0^m DoubleStar Pavo (Pav) Visible

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1Physical Properties

Magnitude 4.01

Spectral Type K0III giant

Star Color Orange (B-V 1.14)

Distance 93 ly

2Position & Identifiers

RA 18h 43m 02.1s

Dec -71° 25' 41.0"

Constellation Pavo (Pav)

HR 6982

HIP 91792

HD 171759

SAO 257620

Bayer Zeta

SIMBAD

3How easy to split?

Primary 4.0 mag Companion 12.0 mag Separation 69.6″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	V. 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 May – Jul (peak: Jun)

5Multiple Star System

Separation 69.6″

Companion Mag 12.0

Position Angle 356°

Star Colors A: Orange

Discoverer HJ 5048

Separation over time

Measured 1835 → 2010 (175 y)

Separation drift 35.0" → 69.6" (+34.60")

Rate +0.1977" / y

PA drift 354° → 356° (+2°, +0.011°/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.