EDP Sciences
Free access
Volume 383, Number 2, February IV 2002
Page(s) 724 - 728
Section The solar system
DOI http://dx.doi.org/10.1051/0004-6361:20011770

A&A 383, 724-728 (2002)
DOI: 10.1051/0004-6361:20011770

Astrometric CCD observations of the inner Jovian satellites in 1999-2000

I. Kulyk1, 2, K. Jockers3, N. Karpov4 and A. Sergeev4

1  Main Astronomical Observatory of Ukrainian National Academy of Sciences 03680, Golosiiv, Kyiv-127, Ukraine
2  Isaac Newton Institute, Kiev Branch Casilla 8-9,Correo 9, Santiago, Chile
3  Max-Planck-Institute for Aeronomy 37191 Katlenburg-Lindau, Germany
4  International Center for Astronomical and Medico-Ecological Studies 03680, Golosiiv, Kyiv-127, Ukraine

(Received 16 October 2001 / Accepted 11 December 2001)

This paper presents the results of observations of the inner Jovian satellites Thebe, Amalthea, Adrastea and Metis made in October-November 1999 and in November 2000. We provide $\Delta\alpha$ and $\Delta\delta$ of Thebe and Amalthea with respect to the Galilean satellites, while the positions of Adrastea and Metis are referred to either the Galilean moons or to Thebe or to Amalthea. All observed positions are compared with theoretical ones. Residual statistics show an inner accuracy of our observations in the range from about 0.1 to 0.9 arcsec. The dependence of the differences of the observed and calculated positions on the orbital longitude is presented for our observations of Adrastea and Metis.

Key words: planets and satellites: individual: Jovian inner satellites -- astrometry

Offprint request: I. Kulyk, leda@mao.kiev.ua

© ESO 2002