Resumo

RICA ROMERO, F. M.. Orbital elements for BU 1240 AB: Nature of the C and D components. Rev. mex. astron. astrofis [online]. 2008, vol.44, n.1, pp.137-147. ISSN 0185-1101.

New orbital parameters and masses for WDS 05386+3030 = BU 1240 AB were determined prompted by the large residuals seen in recent speckle measurements from 1985. A combined solution of graphical (to determine preliminary parameters) and analytical methods was used. The preliminary orbit was refined using the differential correction method by Heintz. The physical characteristics of the C and D components were studied using BVIJHK photometry, historical astrometry and kinematical data. Several criteria indicate a physical nature for C and an optical nature for D.

Palavras-chave : binaries: general; binaries: visual; stars: individual (HD 37269, ADS 4229).