CF UMa
HR 4550
DoubleStar
UMa
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
6.45
Spectral Type
G8Vp
Star Color
Orange
(B-V 0.75)
Distance
28.1 ly
Position & Identifiers
RA
11h 52m 58.8s
Dec
+37° 43' 07.0"
Constellation
UMa
HR
4550
Variable ID
CF UMa
Visibility
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Multiple Star System
Separation
1.7″
Star Colors
A: Orange
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
Companion of Groombridge 1830, UV? 8.5-12v.
The reality of the companion, CF UMa, announced by P. van de Kamp (see Low Luminosity Stars, ed. S. S. Kumar, p. 199, | 1968) has been questioned (PASP, 96, 557, 1984). Unresolved by speckle interferometry 1980.47.
Groombridge 1830.
Survey Image
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