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The RAMOD astrometric observable and the relativistic astrometric catalogs

Published online by Cambridge University Press:  01 October 2007

M. T. Crosta ,
B. Bucciarelli ,
F. de Felice ,
M. G. Lattanzi  and
A. Vecchiato
M. T. Crosta
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy
B. Bucciarelli
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy
F. de Felice
Affiliation:
University “G.Galileo”, Dept. of Physics, via Marzolo 8, Padova, Italy
M. G. Lattanzi
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy
A. Vecchiato
Affiliation:
INAF-OATo, Strada Osservatorio 20, Pino Torinese, Torino, Italy
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Abstract

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We describe a way to compare current relativistic astrometric models accurate to the micro-arcsecond level. The observed stellar direction can be written as a function of several parts, linking the astrometric observables to the relativistic effects associated to the stellar kinematical properties and distances as seen inside the gravitational field of our Solar System, i.e. the so called relativistic astrometric parameters, providing a tool for comparing the RAMOD framework to the pM/pN approaches.

Keywords

astrometrygeneral relativitysolar system: generalcatalogs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 397 - 398
Copyright
Copyright © International Astronomical Union 2008

References

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