Influence of reference frames on the determination of longitudes and longitude differences

Details Influence of reference frames on the determination of longitudes and longitude differences Influence of reference frames on the determination of longitudes and longitude differences

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pobeo..73..105c&link_type=abstract

Publications of the Astronomical Observatory of Belgrade (ISSN 0373-3742), No. 73, p. 105 - 108 (2002). In: Proceedings of the T

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Reference Frames, Longitude Determination

Scientific paper

Within the framework of establishing the European longitude network in 1988, the longitude differences Munich-Vienna-Graz were determined by zenith distance observations with Danjon astrolabe. Two reference frames were used in the reduction of observations: one dynamical, specified by the FK5 catalogue and the other kinematical, specified by HIPPARCOS catalogue, the mathematical model serving for smoothing the measurements in both cases being the same. By comparing the longitudes obtained for Munich, Vienna and Graz from two reference frames a systematic difference was revealed of 3 msec, which is cancelled in the longitude difference determination.

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