NEAR
Shoemaker Completes Low Pass Over Eros
10/26/00
Just
before 3 a.m. (EDT) today, NEAR Shoemaker successfully dipped
to about three miles (5.3 kilometers) over Eros' surface,
taking ../../../images and collecting data from a distance closer than
any spacecraft has ever come to an asteroid.
"We
expect to get clear ../../../images of boulders as small as two feet
across and see ridges and craters in exquisite detail," says
Dr. Andrew F. Cheng, NEAR project scientist. "The laser rangefinder
and X-ray spectrometer will also obtain their highest resolution
data to date."
Eros
from 5 miles away, covered with rocks of all sizes
and shapes on a gently rolling, cratered surface.
The large boulder at the center of the scene is about
82 feet (25 meters) across. (Click image for full
size view)
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An
engine burn put the spacecraft in a highly elliptical 31-by-13
mile (50-by-21 kilometer) orbit which included the close approach.
Another maneuver later today sent NEAR Shoemaker, traveling
at a speed of 14 miles per hour, toward a higher, more stable
orbit, about 125 miles (200 kilometers) above the asteroid,
where it will stay for the next month. "The whole sequence
has gone smoothly," says NEAR mission operations team member
Bob Nelson.
"Our
proximity to Eros will be equivalent to the cruising altitude
of a commuter airplane on Earth," says Dr. Robert W. Farquhar,
NEAR mission director. "When you consider that the asteroid
is tumbling end to end in its orbit, getting this close is
a little tricky, but we're very well-prepared." The spacecraft
took ../../../images and collected data for more than five hours during
its descent. It stayed at the lowest altitude for approximately
30 minutes before moving away due to the asteroid's rotation
and its irregular shape.
../../../images
from the low altitude flyby can be seen at the NEAR
Web site. Click here
for the full story of NEAR's close encounter.
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