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STS-99, Mission Control Center
Status Report # 12 Wednesday, February
16, 2000 - 6:30 p.m. CST
With growing confidence that
fuel-saving measures onboard Endeavour will permit the radar mapping
mission to run its full duration, flight controllers and crew members
today marked the mission’s mid-way point. “We’re almost
there,” stated Milt Heflin, NASA’s Deputy Chief Flight Director.
Science operations progressed
flawlessly through the halfway point of the 11-day mission. “You
have six smiling faces up here,” remarked Gerhard Thiele after
being told how well the mapping was going. As of noon today, more than
73 percent, or 35 million square miles, of the target area has been
mapped once. That exceeds the land area of the Americas, Africa and
Australia combined. More than 38 percent of the target area – 18
million square miles – has been mapped with two or more passes.
Endeavour collects data on 40,000 square miles every minute it is over
land.
New radar images of the Kamchatka
Peninsula in Russia’s Far East, and of northwestern Mongolia were
released today. Shuttle Radar Topography Mission images hold the promise
of helping scientists and planners better understand such potential
problems as river flooding and soil erosion.
While continuing to troubleshoot
the balky small thruster on the tip of Endeavour’s 200-foot mast,
flight controllers are implementing steps to conserve the propellant
used by the orbiter’s reaction control system jets to maintain
the mast’s attitude. With pilot Dom Gorie cycling the cold gas
line, Janice Voss reported seeing a small, white object moving out of
Endeavour’s payload bay. The object is suspected to be a small
piece of ice. The remaining Blue Team member, Mamoru Mohri, took some
time out of his day to talk with students in his native country of Japan.
Later today, Thiele answered questions from reporters at the German
Space Operations Center in Oberpfaffenhofen.
Meanwhile, EarthKam has processed
1,033 images – more than from any other shuttle mission. Using
a camera mounted in Endeavour’s overhead window, school students
are taking pictures of the Earth. On four previous flights, EarthKam
took about 2,000 photos.
Endeavour continues to provide
an excellent platform for the most accurate and unified topographical
mapping of the Earth ever produced. The next status report will be issued
at 6 a.m. Thursday, or as mission events warrant.
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