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Launch Status: Go for Launch
Date: June 29, 2003
Time: 12:37:59 a.m. EDT
Launch Weather Update

L-5 weather balloons showed an unacceptable wind shear at 15,000 feet. The decision is no go for tonight. The vehicle is being detanked to get ready for a 24-hour turn around.

A decision has been made to go for the second launch attempt time due to the possibility of toxic dispersion over populated areas. A shift in the winds to a westwardly direction is anticipated.

The launch of Opportunity is the first launch at Launch Pad 17-B since the installation of the new water sound suppression system. Launch managers anticipate that steam will engulf about half of the pad at liftoff.

The distance from Earth to Mars for Opportunity to travel is 89 million miles. When Spirit launched the distance was 65 million.

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The Virtual Launch Control Center was activated at
9:30 p.m. EDT June 28, 2003

The Virtual Launch Control Center was deactivated at 12:30 a.m. EDT on June 29, 2003

All times are in EDT unless otherwise stated.

12:30 a.m. - The Launch Weather Officer has updated the forecast for the second opportunity. We are in a no go condition.

12:20 a.m.Launch managers are standing by for weather update.

11:42 p.m. - The countdown has entered a 10-minute built-in hold at T-4 minutes. The hold has been extended and we will be going for the second launch attempt due to the possibility of toxic dispersion over populated areas and also due to the presence of an unauthorized boat in the restricted area.

11:26 p.m. - The countdown has resumed at T-20 minutes and counting.

11:18 p.m. - The NASA Launch Manager and Mission Director are polling their teams for a go/no-go to proceed with the Terminal Count. All team members report they are ready. The thick cloud rule is a concern.

11:07 p.m. - The Launch Weather Officer anticipates that we will be good for launch for first opportunity.

11:06 p.m. - The countdown has entered a 20-minute built-in hold at T-20 minutes and counting.

10:53 p.m. - The Boeing Delta Chief Engineer is providing a winds assessment. Winds assessment, good results from weather balloon at 95,000 feet. Ground winds are not a problem.

10:50 p.m. - The second stage pressurization is complete.

10:11 p.m. - At T-75 minutes and counting, the Delta II heavy rocket is being loaded with supercold liquid oxygen. As the liquid oxygen gets loaded the vehicle seems to change color from blue to white. The fueling concluded 27 minutes and 26 seconds later at 10:38 p.m..

9:57 p.m. - The NASA Launch Manager and Mission Director are conducting polls for a go/no-go for cryogenic tanking.

9:51 p.m. - The Launch Weather Officer is holding a weather briefing, We are going to attempt first launch opportunity at 11:56:16 p.m. EDT. Chance of weather violation is 60%.

9:21 p.m. - Loading of 9,997 gallons of RP-1 (highly refined kerosene) fuel into the Delta II heavy rocket began. Loading concluded approximately 20 minutes later.

8:56 p.m. - The Terminal Count has begun at T-150 minutes and counting. It has been announced that all personnel should clear the pad area.

8:35 p.m. - The NASA Launch Manager (Omar Baez) and Boeing Mission Director (Rich Murphy) are conducting polls for a go/no-go to initiate the Terminal Countdown at T-150 minutes. All team members have given a "go."

 

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