Spaceflight Now: Breaking News

NEAR Shoemaker back in the asteroid saddle again
JHU/APL PHOTO RELEASE
Posted: April 18, 2000

  Eros
Eros. Photo: JHU/APL
 
NEAR Shoemaker's imager is being directed at the "saddle region" of Eros again, to observe this feature under the widest variety of lighting conditions. This image of the saddle was taken March 22, 2000, from a range of 208 kilometers (129 miles). Generically speaking, a saddle is a low ridge connecting two mountains. The definition does not include an explanation for the origin of the curvature. Similarly, on Eros, the term "saddle region" is a description of a physical feature and doesn't imply any particular origin.

Perhaps the most frequently asked question about Eros' surface is, "What is the origin of the saddle?" Was it formed as a spallation scar resulting from the impact that created the large 5.5-kilometer (3.4-mile) diameter crater on the opposite side of the asteroid? To determine its origin will take time. Right now, the southern part of the feature is still in shadow. Over the next few months, as the Sun moves south in Eros' sky, the whole saddle will become visible. As NEAR Shoemaker continues to take more and more pictures of the saddle region, we will be better able to answer key questions about this feature.

Built and managed by The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, NEAR-Shoemaker was the first spacecraft launched in NASA's Discovery Program of low-cost, small-scale planetary missions.

Earlier coverage
The impact of sun at high noon

NEAR Shoemaker moves even closer to asteroid Eros

Asteroid's aging craters

NEAR Shoemaker shows the importance of lighting

NEAR Shoemaker moves in for better look at Eros

Eros at sunset



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