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- W3112348360 abstract "Observation catalogues of extragalactic radio sources obtained by Very long Baseline Interferometry during the last decade agree in the mean to a few milliarcseconds (mas). Within this range the position differences show constant, linear and periodic offsets. To reduce the influence of individual catalogue properties the construction of a compilation catalogue seems to be the appropriate procedure. In some detail the compilation method is described providing simultaneous adjustment of source positions and catalogue corrections. The compilation catalogue consists of 40 objects having positional errors of 0.2 mas in right ascension (RA) and 0.3 mas in declination (Dec). Comparing this catalogue with the IERS Celestial Reference Frame compiled by means of other precepts yields weighted root-mean-square differences of 0.7 mas in RA and 1.3 mas in Dec. Finally, the terms of general precession in RA and Dec are included in the adjustment process giving estimates of the correction to the luni-solar precession between −1 and −3 mas/yr, the latter figure applying when some early data are added." @default.
- W3112348360 created "2020-12-21" @default.
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- W3112348360 date "1991-01-01" @default.
- W3112348360 modified "2023-09-23" @default.
- W3112348360 title "Corrections to the luni-solar precession derived from a compilation catalogue of extragalactic radio sources" @default.
- W3112348360 hasPublicationYear "1991" @default.
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