During the Near Earth Asteroid Rendezvous (NEAR)–Shoemaker's low-altitude flyover of asteroid 433 Eros, observations by the NEAR Laser Rangefinder (NLR) have helped to characterize small-scale surface features.

There should be a few large craters, more medium-sized craters and many more small craters, because impacts of smaller objects should happen more often than impacts of large objects. The NEAR Shoemaker camera sampled craters and boulders down to just a few centimeters in size on Eros. Eros is a very elongated (34 kilometers by 11 kilometers by 11 kilometers) asteroid, most of the surface of which is saturated with craters smaller than 1 kilometer in diameter. Instead of the expected 400 craters as small as 20 meters (about 70 feet) per square kilometer (three-fifths mile) on Eros’ surface, there are on average only about 40 such craters. Research providers by their specialty, the conditions they treat, and the procedures they perform. 1).The crater Shoemaker (12°S 25°E, called Charlois Regio by the International Astronomical Union, IAU), is the youngest crater of the three discussed here and is 7.6 km in diameter (Thomas et al., 2001).Shoemaker overlaps the crater Himeros (5°N 75°E), which is 10 km in diameter. 433 Eros - Near-Earth asteroid being studied from orbit by the NEAR mission, which flew by Eros in February 1999 and went into orbit in February 2000. The largest crater is 5.5 kilometers across, but there is a 10-kilometer saddle-like depression with attributes of a large degraded crater. The Near-Earth Asteroid Rendezvous (NEAR-Shoemaker) mission by NASA studied the Mathilde and Eros asteroids. That is, the total number of craters smaller than 2 km is four times as many as the total number smaller than 4 km, and the number smaller than 1 km is four times as many again. 1566 Icarus - Highly eccentric Earth-crossing orbit. 951 Gaspra - Imaged by Galileo on 29 Oct 1991. The NEAR spacecraft was launched by the U.S. National Aeronautics and Space Administration on Feb. 17, 1996. The brightness or albedo patterns on the walls of this crater are clearly visible, with the brighter materials near the tops of the walls and darker materials on the lower walls. If craters steadily accumulate for a period of time Δt, the incremental number of craters produced per unit area that will still be visible at the end of that period of time is (15) d N vis (D, t) = R (D) e − A (Δ t − t) d t, where t is the time at which the craters formed (starting from t … One of the asteroid craters that scientists have been studying for many years is Meteor Crater, just outside Flagstaff, Arizona. Thomas and colleagues surveyed NEAR's images of Eros's entire surface and counted 6,760 large rocks, each measuring more than 15 meters across (images g and h at right). The apparent size of Eros and the resolution of the pictures increased continuously, at first only slowly and later dramatically day by day until, on February 9, the level of detail visible exceeded that during NEAR's first flyby of Eros on December 23, 1998. 433 Eros is an S-type asteroid orbiting the Sun mostly between the orbits of Earth and Mars.

The NEAR Shoemaker camera sampled craters and boulders down to just a few centimeters in size on Eros. Its destination, Eros… "Now, if we look carefully, most of the closeup pictures seem to show signs of grooves and ridges." The Rosetta mission studied asteroids Steins in 2008 and Lutetia in 2010. In the last images shown here, details of Eros's surface have become visible. The NEAR photo find suggests that the space rock is riddled with a system of faults, fractures and cracks. "We first saw long grooves in global pictures of the asteroid when NEAR was entering orbit around Eros in February 2000," continued Cheng. Oblique View of Eros' Crater This image, showing an oblique view of Eros' large central crater, was taken at a resolution of about 20 meters (65 feet) per pixel. Square craters add to accumulating evidence that Eros is riddled with cracks and ridges that extend the entire 33 km length of the peanut-shaped space rock. 253 Mathilde - Target of NEAR mission flyby on 27 June 1997 en route to 433 Eros.