When is the best time to observe HIP 45837?

HIP 45837 is best observed from January through March, with peak visibility during February when it transits around midnight in the Northern Hemisphere.

Where is HIP 45837 located in the sky?

HIP 45837 lies in the constellation Pyxis at right ascension 09h 21m and declination -31° 46′.

What telescope do I need to split HIP 45837?

Splitting HIP 45837 requires an aperture of roughly 100 mm or larger — the components are separated by about 3.0″ at magnitudes near 6.8. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 45837 — Double Star in Pyxis

Magnitude 6.8^m DoubleStar Pyxis (Pyx) Visible

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Observe

1Physical Properties

Magnitude 6.82

Spectral Type B9.5V

Star Color Blue-white (B-V 0.00)

2Position & Identifiers

RA 09h 20m 44.2s

Dec -31° 45' 38.0"

Constellation Pyxis (Pyx)

HR 3715

HIP 45837

HD 80773

SAO 200258

SIMBAD

3How easy to split?

Primary 6.8 mag Companion 7.9 mag Separation 3.0″

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

5Multiple Star System

Separation 3.0″

Companion Mag 7.9

Position Angle 75°

Star Colors A: Blue-white B: Yellow-white

Discoverer HJ 4200

Notes

CPM. Components B9V and A0V.

Separation over time

Measured 1836 → 2015 (179 y)

Separation drift 2.0" → 3.0" (+1.00")

Rate +0.0056" / y

PA drift 72° → 75° (+3°, +0.017°/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.