When is the best time to observe HIP 49321?

HIP 49321 is best observed from January through March, with peak visibility during February when it transits around midnight in the Northern Hemisphere.

Where is HIP 49321 located in the sky?

HIP 49321 lies in the constellation Hydra at right ascension 10h 04m and declination -18° 06′.

What telescope do I need to split HIP 49321?

Splitting HIP 49321 requires an aperture of roughly 60 mm or larger — the components are separated by about 21.2″ at magnitudes near 5.9. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 49321 — Double Star in Hydra

Observable Double Star Excellent (63/100)

Sep: 21.2", Companion: mag 7.0

DoubleStar Hydra (Hya) Visible

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Observe

1Physical Properties

Magnitude 5.86

Spectral Type A0V

Star Color Blue-white (B-V -0.06)

2Position & Identifiers

RA 10h 04m 02.9s

Dec -18° 06' 06.0"

Constellation Hydra (Hya)

HR 3963

HIP 49321

HD 87344

Double Cat 7627

SIMBAD

3How easy to split?

Primary 5.9 mag Companion 7.0 mag Separation 21.2″

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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 Jan – Mar (peak: Feb)

5Multiple Star System Triple

Components 3 (triple)

Component IDs AC

Separation 21.2″

Companion Mag 7.0

Position Angle 274°

Star Colors A: Blue-white

Discoverer SHJ 110

Notes

AC binary. B, 12v at 12" optical. C, 7.0v A0, vsini 50k/s.

Separation over time

Measured 1823 → 2019 (196 y)

Separation drift 21.5" → 21.2" (-0.30")

Rate -0.0015" / y

PA drift 273° → 274° (+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.