Abstract
THIS work is very similar to those for previous years, the chief alterations being a table for interpolating the heliographic longitude of the centre of the sun's disk, and also small modifications in the elements of the principal planets to bring them up to recent determinations. In “Efémerides Del Sol, Para 1943”and “Efemérides De La Luna, Para 1943”, in addition to other information such as times of rising and setting at Madrid, meridian passage, sidereal time for Oh. at Greenwich, and the moon's horizontal parallax, right ascension and declination of the sun and moon for each day are given for the times of transit at Greenwich, pp. 42-53, 89-100. These latter correspond to those in pp. 22-29 and pp. 156-171 respectively in the “Nautical Almanacae” , but in the work under consideration co-ordinates are given only to the nearest second of time in right ascension and second of arc in declination. The equation of time is not included with the solar coordinates but is given in a separate table to the nearest minute for 0h. each day at Greenwich. Another table supplies the sun's semi-diameter for every 10 days, the distance from the earth to the sun in terms of an astronomical unit to four decimal places, and also the sun's diurnal orbital motion on each of the ten days.
Anuario del Observatorio Astronómico de Madrid para 1943
Pp. 236. (Madrid : Institute Geográfico, 1942.)
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D., M. SPANISH ASTRONOMICAL DATA. Nature 151, 405 (1943). https://doi.org/10.1038/151405b0
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DOI: https://doi.org/10.1038/151405b0