Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..627t&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Oct. 1983, p. 627-630) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Sept.-Oct.
Astronomy and Astrophysics
Astronomy
4
Astrometry, Binary Stars, Interferometry, Micrometers, Speckle Patterns, Ephemerides, Error Analysis, Orbit Calculation, Orbital Elements, Stellar Motions
Scientific paper
Measurements of the orbits of close binary stars derived from speckle interferometric observations are compared to calculations made on the basis of visual micrometric observations. It is found that the visual micrometric measurements overestimate the small angular distance (rho) between the stars, and that similar errors are contained in the predicted ephemerides. Corrections for both present day and earlier observers are provided. The visual interferometric angular distance scales are related by rho i = 1.67 x (rho v 0.08 sec), if rho v is less than 0.20 sec. The interferometric measurements agree with those of a previous observation, and have a root-means-square error of 0.09 sec.
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