31 Cas
Observable Double Star
Good (53/100)
Sep: 25.0", Suspected visual double is probably single.
HIP 5518; 31 Cas
DoubleStar
Cas
Visible
Level 1
Naked eye / Binoculars - Requires steady seeing
Physical Properties
Magnitude
5.29
Spectral Type
A0Vnn
Star Color
Blue-white
(B-V -0.02)
Distance
191.9 ly
Position & Identifiers
RA
01h 10m 39.3s
Dec
+68° 46' 43.0"
Constellation
Cas
HR
336
HIP
5518
Flamsteed
31 Cas
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Visibility
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Multiple Star System
Separation
25.0″
Position Angle
-1°
Star Colors
A: Blue-white
Discoverer
H 4 16
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 25.0″ · PA: -1° · N up, E left
Resolved · 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
Suspected visual double is probably single.
Survey Image
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