55 Cas

HIP 10438; 55 Cas DoubleStar Cas Visible Level 5 Expert level - Requires steady seeing

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Physical Properties

Magnitude 6.07

Spectral Type G0II-III+B9V

Star Color Yellow (B-V 0.63)

Position & Identifiers

RA 02h 14m 29.1s

Dec +66° 31' 28.0"

Constellation Cas

HR 640

HIP 10438

Flamsteed 55 Cas

Visibility

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Multiple Star System

Separation 0.1″

Companion Mag 7.6

Companion Sp ...

Position Angle 188°

Star Colors A: Yellow

Discoverer MCA 6

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 0.1″ · PA: 188° · N up, E left

Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″

Size Comparison

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Stellar Lifecycle

Spectral Classification

Hertzsprung-Russell Diagram

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Blackbody Spectrum

Stellar Absorption Spectrum

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

Stellar Notes

Double Star

Resolved by speckle interferometry 1983.93, sep. 0.07".

Spectral

vsini of G0 component, 70k/s; of B9 component 85k/s.

Survey Image

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