When is the best time to observe HIP 89805?

HIP 89805 is best observed from May through July, with peak visibility during June when it transits around midnight in the Northern Hemisphere.

Where is HIP 89805 located in the sky?

HIP 89805 lies in the constellation Pavo at right ascension 18h 20m and declination -63° 53′.

What telescope do I need to split HIP 89805?

Splitting HIP 89805 requires an aperture of roughly 80 mm or larger — the components are separated by about 7.9″ at magnitudes near 6.2. The companion is about 4.6 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 89805 — Double Star in Pavo

Magnitude 6.2^m DoubleStar Pavo (Pav) Visible

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Observe

1Physical Properties

Magnitude 6.18

Spectral Type F9V

Star Color Yellow (B-V 0.58)

Distance 192 ly

2Position & Identifiers

RA 18h 19m 40.2s

Dec -63° 53' 13.0"

Constellation Pavo (Pav)

HR 6828

HIP 89805

HD 167425

SAO 254209

SIMBAD

3How easy to split?

Primary 6.2 mag Companion 10.8 mag Separation 7.9″

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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	Medium+	Medium+

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 7.9″

Companion Mag 10.8

Position Angle 349°

Star Colors A: Yellow B: Red

Discoverer I 249

Separation over time

Measured 1897 → 2020 (123 y)

Separation drift 5.0" → 7.9" (+2.90")

Rate +0.0236" / y

PA drift 5° → 349° (-16°, -0.130°/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.