When is the best time to observe HIP 35210?

HIP 35210 is best observed from December through February, with peak visibility during January when it transits around midnight in the Northern Hemisphere.

Where is HIP 35210 located in the sky?

HIP 35210 lies in the constellation Canis Major at right ascension 07h 17m and declination -23° 19′.

What telescope do I need to split HIP 35210?

Splitting HIP 35210 requires an aperture of roughly 60 mm or larger — the components are separated by about 26.5″ at magnitudes near 4.8. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 35210 — Double Star in Canis Major

Observable Double Star Showpiece (76/100)

Sep: 26.5", Companion: mag 5.8

Magnitude 4.8–4.9^m DoubleStar Canis Major (CMa) Visible

Star Map + List + Plan

Observe

1Physical Properties

Magnitude 4.79

Range 4.78 - 4.89

Variable Type LC

Spectral Type K3Ib-II supergiant

Star Color Red (B-V 1.71)

Distance 172 ly

2Position & Identifiers

RA 07h 16m 36.8s

Dec -23° 18' 56.0"

Constellation Canis Major (CMa)

HR 2764

HIP 35210

HD 56577

SAO 173349

Double Cat 5951

SIMBAD

3How easy to split?

Primary 4.8 mag Companion 5.8 mag Separation 26.5″

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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 Dec – Feb (peak: Jan)

5Multiple Star System B: optical

Separation 26.5″

Companion Mag 5.8

Companion Sp dF0

Position Angle 50°

Star Colors A: Red B: Yellow-white

Discoverer HJ 3945

Notes

B, 6.01V, +0.49(B-V), dF0, optical.

Separation over time

Measured 1837 → 2020 (183 y)

Separation drift 35.0" → 26.5" (-8.50")

Rate -0.0464" / y

PA drift 63° → 50° (-13°, -0.071°/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.