When is the best time to observe HIP 36690?

HIP 36690 is best observed from December through February, with peak visibility during January when it transits around midnight in the Northern Hemisphere.

Where is HIP 36690 located in the sky?

HIP 36690 lies in the constellation Gemini at right ascension 07h 33m and declination +22° 53′.

What telescope do I need to split HIP 36690?

Splitting HIP 36690 requires an aperture of roughly 60 mm or larger — the components are separated by about 11.7″ at magnitudes near 6.5. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 36690 — Double Star in Gemini

Magnitude 6.5^m DoubleStar Gemini (Gem) Visible

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Observe

1Physical Properties

Magnitude 6.54

Spectral Type K0II-III+F8V bright giant

Star Color Orange (B-V 1.01)

2Position & Identifiers

RA 07h 32m 50.6s

Dec +22° 53' 16.0"

Constellation Gemini (Gem)

HR 2879

HIP 36690

HD 59878

SAO 79489

Double Cat 6160

SIMBAD

3How easy to split?

Primary 6.5 mag Companion 8.2 mag Separation 11.7″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Easy	Easy	Easy
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 Dec – Feb (peak: Jan)

5Multiple Star System

Separation 11.7″

Companion Mag 8.2

Position Angle 178°

Star Colors A: Orange

Discoverer STF1108

Notes

CPM. Companion F8V.

Separation over time

Measured 1827 → 2019 (192 y)

Separation drift 11.5" → 11.7" (+0.20")

Rate +0.0010" / y

PA drift 179° → 178° (-1°, -0.005°/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.