Geology of 243 Ida

Geology of 243 Ida

greater than the 1 : 5 ratios common on other rocky bodies. Contributing causes include rim degradation by whole-body The surface of 243 Ida is dominated by the effects of impacts. ‘‘ringing,’’ relatively thin ejecta blankets around crater rims, No complex crater morphologies are observed. A complete or an extended strength gradient in near-surface materials due range of crater degradation stat...

S Xxvi Geology of Ida

Several lines of evidence from analysis of impact craters and other morphological features on Ida indicate the asteroid surface is covered with a thin layer of regolith that probably grades downward into less well-sorted rubble/megaregolith. This transition with depth is too gradational or occurs too close to the surface to be expressed in crater morphology at available resolution. Gravitationa...

First images of asteroid 243 ida.

The first images of the asteroid 243 Ida from Galileo show an irregular object measuring 56-kilometers by 24 kilometers by 21 kilometers. Its surface is rich in geologic features, including systems of grooves, blocks, chutes, albedo features, crater chains, and a full range of crater morphologies. The largest blocks may be distributed nonuniformly across the surface; lineaments and dark-floored...

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...

Ejecta Blocks on 243 Ida and on Other Asteroids