When is the best time to observe HIP 17342?

HIP 17342 is best observed from October through December, with peak visibility during November when it transits around midnight in the Northern Hemisphere.

Where is HIP 17342 located in the sky?

HIP 17342 lies in the constellation Camelopardalis at right ascension 03h 43m and declination +59° 58′.

What telescope do I need to split HIP 17342?

Splitting HIP 17342 requires an aperture of roughly 60 mm or larger — the components are separated by about 54.8″ at magnitudes near 5.8. Larger apertures and steady seeing help resolve the pair cleanly.

HIP 17342 — Double Star in Camelopardalis

Observable Double Star Excellent (64/100)

Sep: 54.8", Companion: mag 8.4

DoubleStar Camelopardalis (Cam) Visible

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Observe

1Physical Properties

Magnitude 5.76

Spectral Type K3IIb

Star Color Red (B-V 1.71)

2Position & Identifiers

RA 03h 42m 42.7s

Dec +59° 58' 10.0"

Constellation Camelopardalis (Cam)

HR 1112

HIP 17342

HD 22764

Double Cat 2691

SIMBAD

3How easy to split?

Primary 5.8 mag Companion 8.5 mag Separation 54.8″

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Easy	Easy	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 Oct – Dec (peak: Nov)

5Multiple Star System Quintuple

Components 5 (quintuple)

Component IDs AD

Separation 54.8″

Companion Mag 8.4

Position Angle 36°

Star Colors A: Red

Discoverer WEB 2

Notes

Component D, 8.73V, +0.10(B-V), -0.22(U-B), B8III.

Separation over time

Measured 1810 → 2019 (209 y)

Separation drift 54.4" → 54.8" (+0.40")

Rate +0.0019" / y

PA drift 33° → 36° (+3°, +0.014°/y)

Essentially fixed on human timescales — the same view your grandchildren will see.

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.

Eyepiece View

Telescope Eyepiece

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80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

A: 5.8 · B: 8.4 · Sep: 54.8″ · PA: 36° · N up, E left

Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″

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Size Comparison

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Spectral Classification

9

Hertzsprung-Russell Diagram

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Stellar Lifecycle

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Blackbody Spectrum

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Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

13

Stellar Fusion

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14Stellar Notes

Spectral

Spectrum formerly classified as K4Ib. According to P. C. Keenan (October 1986), recent spectrograms, although not of | extremely high quality, show that star is not as luminous as Ib, with best spectral type of S. Yorka and P. C. | Keenan reported as K3IIb, although it may be slightly later.