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STS-101, Mission Control Center
Status Report # 04 Saturday, May
20, 2000 - 7:00 p.m. CDT
Atlantis' astronauts were awakened
at 4:11 p.m. Central today to the song "Still Shining" by
Bob Seger in honor of tonight's rendezvous with the International Space
Station. STS-101 Mission Commander Jim Halsell will guide Atlantis to
the second Shuttle docking with the International Space Station late
this evening. Atlantis is planned to dock with the station at 11:31
p.m. Central.
As of about 6:30 p.m. this
evening, the Shuttle trailed the station by about 70 nautical miles
and was closing in by about 14 nautical miles with each orbit of Earth.
The final phase of rendezvous will begin when Atlantis reaches a point
about eight nautical miles directly behind the station and fires its
engines in a terminal phase initiation burn at 8:39 p.m. Central.
The TI burn, as it is called,
will put the Shuttle on a course directly toward the station during
the next orbit of Earth. As Atlantis moves within about a half-mile
of the station, Halsell will take over manual control of the Shuttle's
approach, flying the Shuttle from controls in the aft cockpit. Atlantis
will arrive at a point about 600 feet directly below the station about
10:09 p.m. Central, and Halsell then will begin a half-circle of the
orbiting outpost. Atlantis will pass about 350 feet in front of the
station and then move to a point about 250 feet directly above it about
10:34 p.m. Central.
Halsell will then begin to
descend toward the station and, at about 10:38 p.m. Central, hold position
at a point about 170 feet away. Halsell will maintain that distance
for about 20 minutes to allow the station to move within range of Russian
ground communications stations before continuing the approach. At 11:20
p.m., Halsell will hold position again briefly at a point about 30 feet
from the station to ensure the Shuttle and station docking mechanisms
are precisely aligned. Docking is expected about 11 minutes later with
the Shuttle contacting the station at a slow rate of about a tenth of
a foot per second.
During the rendezvous, Pilot
Scott Horowitz will assist Halsell in controlling Atlantis' approach.
Mission Specialists Susan Helms and Yury Usachev also will assist with
the rendezvous and docking, with Mary Ellen Weber and Jeff Williams
operating the Shuttle's docking mechanism.
After docking, a hatch leak
check will be performed and the astronauts will review plans for Sunday
night's scheduled space walk by Williams and Jim Voss. Atlantis' crew
will not open the hatch to the Unity module and enter the station until
Monday evening, 24 hours after the space walk is completed.
The next mission status report
will be issued about 4 a.m. Central on Sunday.
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