When is the best time to observe HIP 65603?

HIP 65603 is best observed from March through May, with peak visibility during April when it transits around midnight in the Northern Hemisphere.

Where is HIP 65603 located in the sky?

HIP 65603 lies in the constellation Draco at right ascension 13h 27m and declination +64° 44′.

What telescope do I need to split HIP 65603?

Splitting HIP 65603 requires an aperture of roughly 60 mm or larger — the components are separated by about 69.7″ at magnitudes near 6.7. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 65603 — Double Star in Draco

Magnitude 6.7^m DoubleStar Draco (Dra) Visible

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Observe

1Physical Properties

Magnitude 6.66

Spectral Type F0

Star Color Yellow-white (B-V 0.37)

2Position & Identifiers

RA 13h 27m 04.6s

Dec +64° 44' 08.0"

Constellation Draco (Dra)

HR 5074

HIP 65603

HD 117200

SAO 16078

SIMBAD

3How easy to split?

Primary 6.7 mag Companion 7.0 mag Separation 69.7″

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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 Mar – May (peak: Apr)

5Multiple Star System Triple

Components 3 (triple)

Component IDs AB

Separation 69.7″

Companion Mag 7.0

Companion Sp F0

Position Angle 147°

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

Discoverer STTA123

Notes

CPM with HR 5075.

Separation over time

Measured 1876 → 2023 (147 y)

Separation drift 69.0" → 69.7" (+0.70")

Rate +0.0048" / y

PA drift 147° → 147° (+0°, +0.000°/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.