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HD 72944


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A photometric study of wide visual double stars. III - Wide visual double stars with F-type primaries
Fifty-one wide visual double stars with F-type primaries have beenobserved in the uvby, H-beta system. MK class, color excess, absolutemagnitude, effective temperature and distance have been derived fromcalibrations of the above systems. From the distances derived here andthe astrometric data, taken from the literature, it appears that atleast 75 percent of them can be 'physical pairs'. Nevertheless, about 33percent of the double stars in this sample seem to have a realseparation of their components larger than 0.01 parsecs. That means thatthese stars are not gravitationally bound, but they have a commonorigin. For this season, the values of their astrophysical parametersare usually very close together.

A second list of wide visual binaries
Not Available

A second list of wide visual binaries
Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Yengec
Sað Açýklýk:08h35m54.51s
Yükselim:+09°54'32.8"
Görünürdeki Parlaklýk:8.669
özdevim Sað Açýklýk:-14.5
özdevim Yükselim:-6.1
B-T magnitude:9.426
V-T magnitude:8.732

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 72944
TYCHO-2 2000TYC 801-1598-1
USNO-A2.0USNO-A2 0975-05966564

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