When is the best time to observe Epsilon Sculptoris?

Epsilon Sculptoris is best observed from September through November, with peak visibility during October when it transits around midnight in the Northern Hemisphere.

Where is Epsilon Sculptoris located in the sky?

Epsilon Sculptoris lies in the constellation Sculptor at right ascension 01h 46m and declination -25° 03′.

What telescope do I need to split Epsilon Sculptoris?

Splitting Epsilon Sculptoris requires an aperture of roughly 80 mm or larger — the components are separated by about 5.0″ at magnitudes near 5.3. The companion is about 3.2 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

Epsilon Sculptoris — Double Star in Sculptor

Observable Double Star Excellent (61/100)

Sep: 5.0", Companion: mag 8.5

Magnitude 5.3^m DoubleStar Sculptor (Scl) Visible

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Observe

1Physical Properties

Magnitude 5.31

Spectral Type F1V

Star Color Yellow-white (B-V 0.39)

Distance 88 ly

2Position & Identifiers

RA 01h 45m 38.8s

Dec -25° 03' 09.0"

Constellation Sculptor (Scl)

HR 514

HIP 8209

HD 10830

SAO 167275

Bayer Epsilon

Double Cat 1394

SIMBAD

3How easy to split?

Primary 5.3 mag Companion 8.5 mag Separation 5.0″

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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 Sep – Nov (peak: Oct)

5Multiple Star System Quadruple D: optical

Components 4 (quadruple)

Component IDs AB

Separation 5.0″

Companion Mag 8.5

Position Angle 18°

Star Colors A: Yellow-white B: Orange

Discoverer HJ 3461

Notes

AB 5.4 F1V, 8.6 G9V, 1192.2y, a = 4.652". C 15.0v at 15", D 11.5v at 142". Spectrum of secondary also classified K1V.

Separation over time

Measured 1835 → 2017 (182 y)

Separation drift 3.0" → 5.0" (+2.00")

Rate +0.0110" / y

PA drift 73° → 18° (-55°, -0.302°/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.