A homogeneous zterm series of astrometric latitude observations (January 5, 1962December 31, 1981)
Abstract
Optical astrometric data for 19621982 has been reduced in order to redetermine the earth rotation parameters. A homogeneous series of zterms of latitude observations has also been obtained. A total of 1461 zterms at fiveday intervals in the 20 years are given in this paper. The typical precisions of the zterms are of the order of + or  0.014 arcsec for the first five years and from + or  0.008 arecsec to + or  0.005 arcsec for the following years.
 Publication:
 Astronomy and Astrophysics Supplement Series
 Pub Date:
 October 1988
 Bibcode:
 1988A&AS...75..151L
 Keywords:

 Celestial Geodesy;
 Earth Rotation;
 Latitude;
 Optical Measurement;
 Accuracy;
 Astrometry;
 Data Reduction;
 Tables (Data);
 Astronomy