Accession Number : AD0709408

Title :   EPHEMERIS OF THE SUN, POLARIS AND OTHER SELECTED STARS WITHIN COMPANION DATA AND TABLES FOR THE YEAR 1970.

Corporate Author : NAUTICAL ALMANAC OFFICE WASHINGTON D C

Report Date : 1970

Pagination or Media Count : 41

Abstract : The arrangement of the astronomical data herein conforms to the methods and examples for the determination of time, latitude, and azimuth, practiced by the cadastral engineers of the Bureau of Land Management. These practices are described in the Manual of Instructions for the Survey of the Public Lands of the United States. The methods long in use have been developed for the best operation of the improved solar transit, in combination with observations on the sun, Polaris, and the brighter equatorial stars, for the determination and verification of time, latitude, and azimuth. In this practice, the data for the sun are required in terms of daily apparent positions for the Greenwich meridian; for all stellar positions in terms of the Greenwich meridian, mean time, and mean time intervals. The apparent time of sunrise and of sunset, the refractions in polar distance, and the companion trigonometric tables and formulas employed in these methods, are tabulated in the Standard Field Tables of the Bureau of Land Management. (Author)

Descriptors :   (*STARS, EPHEMERIDES), ASTRONOMY, SUN, POSITION FINDING, TABLES(DATA)

Subject Categories : Astronomy

Distribution Statement : APPROVED FOR PUBLIC RELEASE