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The PLANETS database has been conceived and firstly compiled at the Golosiiv Observatory in 1984, Kiev (Kharin et al. 1987). Since 1988, it is updated, maintained and analysed in cooperation with the Institute of Astronomy, Moscow. By this time the database comprises most of the published optical observations of the Sun and 7 major planets made from 1960 onwards with 21 meridian instruments, 15 astrographs and 11 astrolabes at 29 observatories.

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