| Issue |
A&A
Volume 418, Number 3, May II 2004
|
|
|---|---|---|
| Page(s) | 1159 - 1170 | |
| Section | Celestial mechanics and astrometry | |
| DOI | https://doi.org/10.1051/0004-6361:20034441 | |
| Published online | 16 April 2004 | |
A critical discussion on parametric and nonparametric regression methods applied to Hipparcos-FK5 residuals
1
Dept. Matematicas, Universidad Jaume I, Campus de Riu Sec, 12071 Castellon, Spain e-mail: marco;lopez@mat.uji.es
2
Dept. Matematica Aplicada. Universidad politecnica de Valencia ETSII Valencia, Spain e-mail: mjmartin@mat.upv.es
Corresponding author: F. J. Marco, marco@mat.uji.es
Received:
3
October
2003
Accepted:
22
January
2004
In this paper we present an analysis of the differences between the Hipparcos and FK5 catalogues. We study parametric and nonparametric methods with two main objectives: first, to determine whether or not there is a pure rotation between the two catalogues, and to decide which model best represents the residuals; second, to give a practical formulation to reduce positions between the two systems at any point on the celestial sphere.
Key words: astrometry / catalogs / reference systems
© ESO, 2004
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