R. Vasundhara

TL;DR: Astrometric results of observations of the mutual events of the Galilean satellites of Jupiter of the PHEMU97 campaign by the Institut de Mecanique Celeste et de Calcul des Ephemerides are presented in this paper.

TL;DR: In 2003, the Sun and the Earth passed through both the equatorial plane of Jupiter and therefore the orbital planes of its main satellites, and during this period, mutual eclipses and occultations were observed and the data collected as mentioned in this paper.

TL;DR: In this article, the authors investigated the precision of the catalogue to produce improved data for the development of dynamical models, and gave a first estimate of the precision for mutual eclipse and occultation data.

TL;DR: Astrometric results of CCD observations of the mutual events of the Galilean satellites of Jupiter from the Vainu Bappu Observatory are presented in this paper, where the shifts in the photo-centers on the disks of Io and Europa due to albedo variations inferred from the available mosaics of Galileo imagery are determined.

TL;DR: In this paper, a model to compute the trajectories of dust grains ejected by comets to simulate intensity and polarization maps on the sky plane is presented, which is used to constrain the silicate to organic mass ratio, porosity and size distribution of the grains in the shells and coma of comet Hale-Bopp to explain 1) the published polarizations at three continuum wavelengths at 0.6840 μm, 0.4845 μm and 0.3650 μm at different phase angles, 2) higher polarization and bluer colour of the shells compared to the