When is the best time to observe HIP 39194?

HIP 39194 is best observed from December through February, with peak visibility during January when it transits around midnight in the Northern Hemisphere.

Where is HIP 39194 located in the sky?

HIP 39194 lies in the constellation Cancer at right ascension 08h 01m and declination +23° 35′.

What telescope do I need to split HIP 39194?

Splitting HIP 39194 requires an aperture of roughly 210 mm or larger — the components are separated by about 2.1″ at magnitudes near 6.3. The companion is about 3.6 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 39194 — Double Star in Cancer

Magnitude 6.3^m DoubleStar Cancer (Cnc) Visible

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Observe

1Physical Properties

Magnitude 6.34

Spectral Type K1III-IV giant

Distance 326 ly

2Position & Identifiers

RA 08h 01m 00.7s

Dec +23° 34' 59.0"

Constellation Cancer (Cnc)

HR 3127

HIP 39194

HD 65757

SAO 79864

Double Cat 6513

SIMBAD

3How easy to split?

Primary 6.3 mag Companion 10.0 mag Separation 2.1″

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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.	Hard	Hard	Hard
Celestron C8 (203 mm SCT) C8 203mm	Hard+	Hard+	Hard+

Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

To reach "Medium" at Bortle 3, you'd need at least a 210 mm reflector.

4Visibility

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Best season Dec – Feb (peak: Jan)

5Multiple Star System

Separation 2.1″

Companion Mag 9.9

Position Angle 326°

Discoverer STF1171

Separation over time

Measured 1828 → 2016 (188 y)

Separation drift 2.8" → 2.1" (-0.70")

Rate -0.0037" / y

PA drift 339° → 326° (-13°, -0.069°/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.