Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988lastr.102..476b&link_type=abstract
L'Astronomie (ISSN 0004-6302), vol. 102, Dec. 1988, p. 476-481. In French.
Astronomy and Astrophysics
Astronomy
Astrometry, Binary Stars, Orbital Mechanics, Stellar Orbits, Astronomical Coordinates, Companion Stars, Space Observations (From Earth), Stellar Magnitude
Scientific paper
The observation and orbital determination of binary systems are discussed, and ephemerides for 19 binaries are presented. Factors affecting binary star observation include the separation, the relative magnitude of the two stars, and the limitations of the instrument employed. Limiting magnitudes of 8.5 for a telescope aperture of 0.12 m, 9.5-10 for an aperture of 0.20 m, and 11-12 for an aperture of 0.50 m are indicated. It is suggested that binary orbits can only be accurately determined based on data obtained for a sufficiently large arc of the companion's orbit, and that the observed arc should include the apastron.
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