The equinox correction, based on current observations of the sun, Venus, and Mars

Details The equinox correction, based on current observations of the sun, Venus, and Mars The equinox correction, based on current observations of the sun, Venus, and Mars

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..931k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Dec. 1984, p. 931-935) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Nov.-Dec

Mathematics

1

Astrometry, Equinoxes, Mars (Planet), Solar Position, Venus (Planet), Correction, Matrices (Mathematics), Vectors (Mathematics)

Scientific paper

The secular motion of the FK 4 equinox is investigated by analyzing 40,000 meridian-circle, astrolabe, and photographic observations of the sun, Mars, and Venus obtained during 1960-1977. The data include the published Washington and Greenwich observations as well as 24,366 observations obtained at eight Soviet observatories and at Tokyo, Perth, Paris, Besancon, CERGA, Algiers, and San Fernando (Spain). The data for Venus and the sun reveal no appreciable secular drift in the equinox, in contrast to the Mars observations. The discrepancy is attributed to a systematic difference between day and night observations.

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