Improved orbits of the visual binary del Equ.

Abstract

Additional coude' spectrograms of Equ combined with analysis of the available visual double star observations allow us to determine the properties of this F7 V system with high precision. The average values of the mass and visual absolute magnitude are 1.19 'A)' , and , respectively. Key words: stellar masses-stellar luminosities-visual binary stars-spectroscopic binary stars

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