When is the best time to observe HIP 72573?

HIP 72573 is best observed from March through May, with peak visibility during April when it transits around midnight in the Northern Hemisphere.

Where is HIP 72573 located in the sky?

HIP 72573 lies in the constellation Ursa Minor at right ascension 14h 50m and declination +82° 31′.

What telescope do I need to split HIP 72573?

Splitting HIP 72573 requires an aperture of roughly 560 mm or larger — the components are separated by about 1.9″ at magnitudes near 5.6. The companion is about 5.9 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 72573 — Double Star in Ursa Minor

Magnitude 5.6^m DoubleStar Ursa Minor (UMi) Visible

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Observe

1Physical Properties

Magnitude 5.64

Spectral Type F9V

Star Color Yellow (B-V 0.68)

Distance 204 ly

2Position & Identifiers

RA 14h 50m 20.4s

Dec +82° 30' 43.0"

Constellation Ursa Minor (UMi)

HR 5596

HIP 72573

HD 133002

SAO 2459

SIMBAD

3How easy to split?

Primary 5.6 mag Companion 11.5 mag Separation 1.9″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	V. hard	V. hard	V. hard
150 mm Newton 150mm Newt.	V. hard	V. hard	V. hard
Celestron C8 (203 mm SCT) C8 203mm	V. hard+	V. hard+	V. hard+