V640 Cas
Observable Double Star
Fair (26/100)
Sep: 1.5", Companion: mag 7.3
HIP 518
DoubleStar
Cas
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
5.96
Spectral Type
G5V
Star Color
Yellow
(B-V 0.67)
Distance
69.4 ly
Position & Identifiers
RA
00h 06m 16.0s
Dec
+58° 26' 12.0"
Constellation
Cas
HR
5
HIP
518
Variable ID
V640 Cas
Double Cat
61
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Visibility
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Multiple Star System
Separation
1.5″
Companion Mag
7.3
Companion Sp
G8V
Position Angle
8°
Star Colors
A: Yellow
B: Orange
Discoverer
STF3062
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.5″ · PA: 8° · 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
Amp. 0.066V, 1.0819d.
6.43 dG4, 7.19 dG8, 106.83y, a = 1.432". Component B has possible invisible companion, period 6.9y.
0.051".
Survey Image
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