Upsilon Cas
HIP 4292; Upsilon1 Cas; 26 Cas
HIP 4292; Upsilon1 Cas; 26 Cas
DoubleStar
Cas
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.83
Spectral Type
K2III
Star Color
Red
(B-V 1.21)
Distance
543.6 ly
Position & Identifiers
RA
00h 55m 00.1s
Dec
+58° 58' 22.0"
Constellation
Cas
HR
253
HIP
4292
Bayer
Upsilon1
Flamsteed
26 Cas
Double Cat
748
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Visibility
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Multiple Star System
Components
3
Component IDs
AC
Separation
18.0″
Companion Mag
12.5
Position Angle
63°
Star Colors
A: Red
Discoverer
BU 1098
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 18.0″ · PA: 63° · 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
AB optical.
Survey Image
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