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STS-99, Mission Control Center
Status Report # 18 Saturday, February
19, 2000 - 6 p.m. CST
Following yesterday’s
decision by mission managers to extend mapping operations,
Endeavour’s astronauts are set to continue collecting data until
5:44 a.m. Central
time Monday. At that point preparations will begin to stow the 200-foot-long
mast
for the remainder of the mission. This 9-hour extension allows for almost
100
percent of the planned coverage of the Shuttle Radar Topography Mission.
The mission’s target
mapping area includes about 47.6 million square miles. As of
noon, 92 percent, or about 44 million square miles, of the target area
had been
mapped once. More than 65 percent of the target area – nearly 31
million square
miles – has been mapped with two or more passes. Only 80,000 square
miles of
the target area, mostly in North America, will remain unmapped by the
end of
mapping operations. Highly accurate topographic maps of these areas
already
exist.
Clearly elated, scientists
released new images of Oahu, Molokai, Lanai and west
Maui, Hawaii; Dallas, Texas; Salalah, Oman; and Tasmania, Australia.
Quick-Time
movies of Hokkaido, Japan, home of Mission Specialist Mamoru Mohri,
and of
Brazil, also were released. “I have to believe that scientists
all over the world are
giving a standing ovation to the SRTM team,” observed Dr. Jeffrey
Plaut, a
research scientist at the Jet Propulsion Laboratory. He said that maps
resulting
from SRTM data would help archaeologists study ancient cultures and
the lands
they inhabited, and better understand the reasons for their demise.
Science operations continued
on schedule through the mission’s ninth day, with all
radar and orbiter systems continuing to work smoothly.
Endeavour’s crew carried
out the seventh trim burn of the mission earlier today.
This “flycast maneuver” keeps the spacecraft at the proper
altitude for mapping and
is designed to reduce the stresses on the mast and minimize the loads
at the tip.
This was the last flycast maneuver planned during the mission.
Earlier today, Commander Kevin
Kregel and European Space Agency astronaut Gerhard Thiele spoke to reporters
gathered at the German Space Operations Center in Oberpfaffenhofen and
in Munich. At 7:14 p.m., the crew will send greetings to the Houston
Livestock Show and Rodeo, the world’s largest.
Endeavour’s systems continue
to perform flawlessly as it circles the Earth at an
altitude of about 150 statute miles. The next status report will be
issued at 6 a.m.
Sunday, or as mission events warrant.
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