STS-98 Day 12 Highlights
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- On Sunday, February 18, 2001, 5:00 a.m. CST, STS-98 MCC Status Report # 22
- Atlantis' astronauts were awakened just before 4 a.m. Central time
Sunday, ready for a homecoming to the Kennedy Space Center.later
today, weather permitting.
- With the U.S. Laboratory Destiny operating in excellent shape as the
newest addition to the International Space Station, Commander Ken
Cockrell, Pilot Mark Polansky and Mission Specialists Bob Curbeam,
Marsha Ivins and Tom Jones began to perform a series of procedures
which will lead to the firing of the Shuttle's braking rockets late
this morning to begin their hour-long reentry back to Earth.
- There are two landing opportunities available today for Atlantis'
return to Florida. The first begins with a deorbit firing of the
Shuttle's orbital maneuvering system engines on Orbit 169 at 10:47
a.m. Central time, culminating in a landing at 11:53 a.m. Central time
on Runway 33 at the Kennedy Space Center. A backup opportunity one
orbit later starts with a deorbit burnat 12:22 p.m., resulting in a
1:28 p.m. Central time landing. Weather forecasts for today are
generally favorable with flight controllers watching the possibility
of gusty winds in the vicinity of the Shuttle Landing Facility at the
Cape. The backup landing site at Edwards Air Force Base, California
was not called up for landing support today, but likely would be
activated for backup landing support Monday if Atlantis' landing is
blocked by the weather.
- A landing on the first opportunity of the day would wrap up a
journey of 4.4 million miles for the astronauts and the first Shuttle
mission of the year.
- Atlantis' stronauts begin their deorbit preparations at 6:50
a.m. today, configuring computers for reentry, deactivating the galley
and installing seats on the flight deck and middeck. The payload bay
doors should be closed at 8:07 a.m., and a final "go-no go" decision
for the deorbit burn from Entry Flight Director Leroy Cain is expected
about 10:30 a.m.
- When Atlantis' astronauts were awakened at 3:43 a.m. today, they
were approximately 408 statute miles in front of the International
Space Station. On board the Station, Expedition One Commander Bill
Shepherd, Pilot Yuri Gidzenko and Flight Engineer Sergei Krikalev will
relax today as they enjoy another day of light activities. The
Expedition One crew began its day at Midnight this morning and will go
to sleep about 3:30 p.m. This is the 110th day in space for the
Expedition One crew and its 108th day aboard the orbiting outpost.
- Atlantis continues to orbit the Earth in excellent shape at an
altitude of 237 statute miles as its astronauts gear up for landing.
- On Sunday, February 18, 2001, 12:30 p.m. CST, STS-98 MCC Status Report # 23
- Atlantis' homecoming was delayed today until Monday as gusty winds
at the Kennedy Space Center.forced a waveoff of the Shuttle' landing
at the Florida spaceport.
- Commander Ken Cockrell, Pilot Mark Polansky and Mission Specialists
Bob Curbeam, Marsha Ivins and Tom Jones were ordered to stay in orbit
for an extra day after Entry Flight Director Leroy Cain concluded that
crosswinds at the 3-mile long Shuttle Landing Facility were out of
limits despite crystal clear skies. Atlantis' crew had only two
opportunities today in which to return to Earth.
- The astronauts closed the Shuttle's cargo bay doors just after 8
a.m. Central time this morning as Cain and his team of flight
controllers closely monitored the winds in Florida. Chief Astronaut
Charlie Precourt provided real-time observations as he flew the
Shuttle Training Aircraft over the landing strip, a Gulfstream jet
modified to mimic the landing characteristics of Atlantis.
- Throughout the morning, winds were observed to be gusting in excess
of the 15 knot crosswind limit for a daytime landing, and at 11:47
a.m. Central time, Cain called off today's landing efforts. Word of
the waveoff was radioed up to Cockrell by Spacecraft Communicator
Scott Altman in Mission Control.
- Atlantis will have two opportunities again tomorrow in which to land
at the Kennedy Space Center. The first, on orbit 185, calls for a
firing of Atlantis' braking rockets at 11:21 a.m. Central time with a
landing on KSC's Shuttle runway at 12:27 p.m. Central time. Atlantis'
cargo bay doors would be closed at around 8:40 a.m. Monday in
preparation for that first landing opportunity. A backup opportunity
is also available on the following orbit, with a deorbit firing of the
orbital maneuvering system engines at 12:57 p.m. Central time and a
landing at 2:03 p.m. Central time. The weather forecast for the Cape
tomorrow is promising, with only scattered clouds, a possibility of
one deck of broken clouds, and somewhat lighter winds which are
predicted to be acceptable for landing.
- The backup landing site at California's Edwards Air Force Base is
forecast to have unacceptable weather, with broken clouds, high winds
and a chance of showers.
- Shortly after today's landing attempts were called off,
Atlantis'astronauts reopened the Shuttle's payload bay doors and
removed their launch and entry suits to begin their bonus day in
space. The astronauts will begin an eight-hour sleep period at 7:43
p.m. Central time tonight and will be awakened at 3:43 a.m. Monday to
begin their pre-landing preparations.
- Atlantis continues to orbit the Earth in excellent shape, completing
an orbit of the Earth every 90 minutes at an altitude of 237 statute
- Aboard the International Space Station, Expedition One Commander
Bill Shepherd, Pilot Yuri Gidzenko and Flight Engineer Sergei Krikalev
spent a relaxing day off aboard the orbital outpost and will enjoy an
off-duty day again on Monday.
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