25 CVn
Observable Double Star
Fair (24/100)
Sep: 1.7", Companion: mag 7.0
HIP 66458; 25 CVn
DoubleStar
CVn
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.82
Spectral Type
A7III
Star Color
Yellow-white
(B-V 0.23)
Distance
108.7 ly
Position & Identifiers
RA
13h 37m 27.6s
Dec
+36° 17' 42.0"
Constellation
CVn
HR
5127
HIP
66458
Flamsteed
25 CVn
Double Cat
8974
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
1.7″
Companion Mag
7.0
Companion Sp
A8V
Position Angle
94°
Star Colors
A: Yellow-white
B: Yellow-white
Discoverer
STF1768
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.7″ · PA: 94° · 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
AB 5.01 A7III, 6.91 F0V, 240.0y, a = 1.091" or 220.4y, a = 1.205". Combined mag., colors.
0.017".
Survey Image
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