When is the best time to observe HIP 18199?

HIP 18199 is best observed from October through December, with peak visibility during November when it transits around midnight in the Northern Hemisphere.

Where is HIP 18199 located in the sky?

HIP 18199 lies in the constellation Horologium at right ascension 03h 54m and declination -46° 54′.

What telescope do I need to split HIP 18199?

Splitting HIP 18199 requires an aperture of roughly 60 mm or larger — the components are separated by about 76.4″ at magnitudes near 5.9. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 18199 — Double Star in Horologium

Observable Double Star Good (49/100)

Sep: 76.4", Companion: mag 8.5

Magnitude 5.9^m DoubleStar Horologium (Hor) Visible

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Observe

1Physical Properties

Magnitude 5.93

Spectral Type K2III giant

Star Color Red (B-V 1.24)

2Position & Identifiers

RA 03h 53m 33.3s

Dec -46° 53' 37.0"

Constellation Horologium (Hor)

HR 1216

HIP 18199

HD 24706

SAO 216540

SIMBAD

3How easy to split?

Primary 5.9 mag Companion 8.5 mag Separation 76.4″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Easy	Easy	Medium+
150 mm Newton 150mm Newt.	Easy	Easy	Easy
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 Oct – Dec (peak: Nov)

5Multiple Star System

Separation 76.4″

Companion Mag 8.5

Companion Sp G

Position Angle 3°

Star Colors A: Red B: Orange

Discoverer SKF 949

Separation over time

Measured 1875 → 2015 (140 y)

Separation drift 76.8" → 76.4" (-0.40")

Rate -0.0029" / y

PA drift 4° → 3° (-1°, -0.007°/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.