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During its 57th through 100th martian days (sols) in Gale Crater, the Mars Science Laboratory (MSL) Curiosity rover performed its first sample acquisition and processing of solid, granular sample. Samples were extracted from an aeolian sand deposit at a location called Rocknest. The Rocknest sampling site was identified to fit the prelaunch scientific and engineering requirements for this first time...
Stereogrammetric measurement of the shape of Eros using images obtained by NEAR's Multispectral Imager provides a survey of the major topographic features and slope processes on this asteroid. This curved asteroid has radii ranging from 3.1 to 17.7 km and a volume of 2535±20 km 3 . The center of figure is within 52 m of the center of mass provided by the Navigation team; this minimal difference...
The NEAR laser rangefinder (NLR) obtained more than 16 million range returns from asteroid 433 Eros. We present the first results from analyses of topographic profiles interpreted with the aid of simultaneous, boresighted images obtained by the NEAR multispectral imager (MSI). The location of the NLR boresight relative to that of MSI is determined by detailed correlations of ranging data and simultaneous...
Analysis of the disk-integrated solar phase curve of 433 Eros, as derived from ground-based telescopic and NEAR Shoemaker spacecraft measurements, shows that Eros's surface properties are typical of average S-type asteroids. Eros displays the same single-particle scattering characteristics and porosity vs theoretical grain size relationships as typical S-asteroids, as does Ida. Eros's single-scattering...
Images obtained during the NEAR spacecraft flyby of 433 Eros in December 1998 reveal a curved object, of a mean size and shape close to those inferred from lightcurve and radar data. The resolution of the images was sufficient to identify landmarks and establish a surface-based coordinate system.
On June 27, 1997, the NEAR spacecraft carried out the first-ever encounter with a C-type asteroid, flying by 253 Mathilde at a distance of 1212 km. We summarize findings derived from 330 images obtained by NEAR's MSI camera which cover about 60% of the surface of the asteroid. The highest resolution achieved was about 160 m/pixel.Mathilde is a low-reflectance object (geometric albedo=0.047) with principal...
The Near Earth Asteroid Rendezvous (NEAR) spacecraft images of C-type asteroid Mathilde show it to have a mean radius of 26.5±1.3 km. The asteroid is geologically distinguished by its low mean density (1.3±0.2 g cm −3 ) and by at least four craters with diameters equal to or greater than Mathilde's mean radius. The large craters and their unremarkable appearance suggest formation without significant...
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