Investigation of the systematic errors of the Belgrade NPZT and AGK3 catalogues

Details Investigation of the systematic errors of the Belgrade NPZT and AGK3 catalogues Investigation of the systematic errors of the Belgrade NPZT and AGK3 catalogues

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...52..455s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 52, June 1983, p. 455-462.

Astronomy and Astrophysics

Astrophysics

Astronomical Catalogs, Error Analysis, Position (Location), Stellar Motions, Tables (Data)

Scientific paper

Systematic errors of the Delta-alpha(alpha) and Delta-delta(alpha) types are derived by comparing star positions in the NPZT and AGK3 catalogues with those deduced from observations made with PZTs at ten latitude stations. Harmonic analysis for each one of the variants of catalogue comparison has been performed by given formulas. Relevant coefficients computed by the least square method, coefficient determination errors, errors of the weight unit, number of used stars, and percentage of the systematic differences less than + or - 0.05 s and + or - 0.5 arcsec are presented. The magnitudes of the errors vary from one station to another.

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