An analysis of parallaxes determined in two coordinates

Details An analysis of parallaxes determined in two coordinates An analysis of parallaxes determined in two coordinates

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85.1390l&link_type=abstract

Astronomical Journal, vol. 85, Oct. 1980, p. 1390-1398. Research supported by the Washington State University

Astronomy and Astrophysics

Astronomy

34

Astrometry, Astronomical Coordinates, Parallax, Statistical Analysis, Astronomical Catalogs, Standard Deviation

Scientific paper

The distribution of trigonometric parallaxes in both x and y coordinates is examined in order to determine whether or not their combination into a single value is justified. Parallaxes in both coordinates are found to be unbiased, and the estimates of their precision in the y coordinate are systematically in error in the same sense at the four observatories that have published parallaxes in both coordinates. The publishing of pi(x) and pi(y) separately is suggested.

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