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Asteroid astrometry as a link between ICRF and the Dynamical Reference Frames

Published online by Cambridge University Press:  01 October 2007

D. A. Nedelcu ,
J. Souchay ,
M. Birlan ,
P. P. Popescu ,
P. V. Paraschiv  and
O. Badescu
D. A. Nedelcu
Affiliation:
Astronomical Institute of the Romanian Academy, Cutitul de Argint 5, RO-040557, Bucharest, Romania email: nedelcu@aira.astro.ro, petre@aira.astro.ro, paras@aira.astro.ro, octavian@aira.astro.ro
J. Souchay
Affiliation:
SYRTE Observatoire de Paris, 61, avenue de l'Observatoire 75014, Paris, France email: jean.souchay@obspm.fr
M. Birlan
Affiliation:
IMCCE Observatoire de Paris, 61, avenue de l'Observatoire 75014, Paris, France email: mirel.birlan@obspm.fr
P. P. Popescu
Affiliation:
Astronomical Institute of the Romanian Academy, Cutitul de Argint 5, RO-040557, Bucharest, Romania email: nedelcu@aira.astro.ro, petre@aira.astro.ro, paras@aira.astro.ro, octavian@aira.astro.ro
P. V. Paraschiv
Affiliation:
Astronomical Institute of the Romanian Academy, Cutitul de Argint 5, RO-040557, Bucharest, Romania email: nedelcu@aira.astro.ro, petre@aira.astro.ro, paras@aira.astro.ro, octavian@aira.astro.ro
O. Badescu
Affiliation:
Astronomical Institute of the Romanian Academy, Cutitul de Argint 5, RO-040557, Bucharest, Romania email: nedelcu@aira.astro.ro, petre@aira.astro.ro, paras@aira.astro.ro, octavian@aira.astro.ro
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Abstract

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Highly accurate astrometry of asteroids in the frame of QSOs will provide the direct link between the Dynamical Reference Frame and the International Celestial Reference Frame. We propose a procedure that implies a selection of events for asteroids with accurately determined orbits crossing the CCD field containing the selected quasars. For asteroid ephemerides, a numerical integration method coupled with precise modelling of asteroid brightness will be used for analyzing our observations. A list of predictions for this type of “close approaches” will be presented.

Keywords

astrometryminor planetsasteroidsreference systems
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. 328 - 329
Copyright
Copyright © International Astronomical Union 2008

References

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Assafin, M., Nedelcu, D. A., Badescu, O., Popescu, P., Andrei, A. H., Camargo, J. I. B., da Silva Neto, D. N., & Vieira Martins, R. 2007, A&A, in pressGoogle Scholar
Bowell, E., Muinonen, K., & Wasserman, L. H. 1994, Asteroids, comets, meteors 1993, p. 477CrossRefGoogle Scholar
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