First images of asteroid 243 ida.

Erosion and Ejecta Reaccretion on 243 Ida and Its Moon

Using a realistic model for the shape of Ida (P. Thomas, J. Veverka, B. Carcich, M. J. S. Belton, R. Sullivan, and M. Galileo images of Asteroid 243 Ida and its satellite Dactyl Davies 1996, Icarus 120, 000–000), we find that an extensive show surfaces which are dominantly shaped by impact cratercolor/albedo unit which dominates the northern and western ing. A number of observations suggest tha...

Understanding Regolith Distribution on 433 Eros Using Analyses of Pit Chains

Introduction: From 2000 to 2001 the Near-Earth Asteroid Rendezvous NEAR-Shoemaker spacecraft orbited the asteroid 433Eros. Tens of thousands of high resolution images were collected in that year by the NEAR Multi-Spectral Imager (MSI). These images revealed that Eros is criss-crossed by hundreds of lineations, including both extensional and contractional features. A global database of all Eros ...

Three-dimensional Orbital Evolution of Asteroid Due to the Sweeping Secular

Observational and Data Reduction Techniques to Optimize Mineralogical Characterizations of Asteroid Surface Materials

Introduction: Mineralogy is the key to determining the compositional history of the asteroids and to determining the genetic relationships between the asteroids and meteorites. The most sophisticated remote mineralogical characterizations involve the quantitative extraction of specific diagnostic parameters from reflectance spectra and the use of quantitative interpre-tive calibrations to deter...

Interaction of the Solar Wind with Magnetized Asteroids

RESUME We use a 2-D hybrid code (fluid electrons, particle ions) to simulate the interaction of the solar wind with a magnetized asteroid. The asteroid field is taken as a dipole with different strengths. For a small magnetic moment a whistler wake is generated. Stronger dipoles generate a magnetosonic perturbation. We compare simulation results with the signatures observed by Galileo near Gasp...