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CF UMa

HR 4550 Star Ursa Major (UMa) Visible Level 2 Small telescope (4")
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Physical Properties

Magnitude 6.45
Spectral Type G8Vp
Star Color Orange (B-V 0.75)
Distance 28 ly

Position & Identifiers

RA 11h 52m 58.8s
Dec +37° 43' 07.0"
Constellation Ursa Major (UMa)
HR 4550
Variable ID CF UMa

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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.

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