When is the best time to observe HIP 57047?

HIP 57047 is best observed from February through April, with peak visibility during March when it transits around midnight in the Northern Hemisphere.

Where is HIP 57047 located in the sky?

HIP 57047 lies in the constellation Hydra at right ascension 11h 42m and declination -32° 30′.

What telescope do I need to split HIP 57047?

Splitting HIP 57047 requires an aperture of roughly 60 mm or larger — the components are separated by about 66.1″ at magnitudes near 5.2. The companion is about 3.1 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 57047 — Double Star in Hydra

Observable Double Star Good (56/100)

Sep: 66.1", Companion: mag 8.3

DoubleStar Hydra (Hya) Visible

Star Map + List + Plan Star Hop

Observe

1Physical Properties

Magnitude 5.22

Spectral Type K5III+F7V

Star Color Red (B-V 1.48)

Distance 217 ly

2Position & Identifiers

RA 11h 41m 44.0s

Dec -32° 29' 59.0"

Constellation Hydra (Hya)

HR 4503

HIP 57047

HD 101666

SIMBAD

3How easy to split?

Primary 5.2 mag Companion 8.3 mag Separation 66.1″

Sign in and configure your equipment and default location to see a personalized row.

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

Set a location in User Settings to see visibility data.

Best season Feb – Apr (peak: Mar)

5Multiple Star System Quadruple

Components 4 (quadruple)

Component IDs AC

Separation 66.1″

Companion Mag 8.3

Companion Sp F7V

Position Angle 44°

Star Colors A: Red C: Yellow

Discoverer HJ 4465

Notes

AC CPM. C, 8.44V, +0.50(B-V), +0.035(U-B), F7V.

Separation over time

Measured 1834 → 2015 (181 y)

Separation drift 60.0" → 66.1" (+6.10")

Rate +0.0337" / y

PA drift 45° → 44° (-1°, -0.006°/y)

Apparent motion is significant on a human timescale — worth revisiting in a decade.

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.