Sept 18, 2009

George H Diller Kennedy Space Center, Fla 321-867-2468 george h diller@nasa gov

STATUS REPORT: ELV-091809

EXPENDABLE LAUNCH VEHICLE STATUS REPORT

Mission: Space Tracking and Surveillance System - Demonstrators Program (STSS-Demo) Launch Vehicle: Delta II 7920-10 Launch Pad: Launch Pad 17-B, Cape Canaveral Air Force Station, Fla Launch Date: No earlier than Sept 23, 2009 Launch Window: 8 - 9 a m EDT

To accommodate readiness of the STSS Demo spacecraft, the launch of the Delta II has been rescheduled for no earlier than Wednesday, Sept 23 at 8 a m EDT The launch window is 60 minutes in duration

Loading of the hypergolic propellants aboard the Delta II second stage is scheduled for Sept 20 The mission countdown dress rehearsal will also be performed that day The Launch Readiness Review is to be held on Sept 21

On Sept 22 at 11:30 p m , the mobile service tower will be pulled away from the Delta II rocket On launch day, Sept 23, the terminal countdown begins at 5:20 a m to start the loading of the RP-1 fuel and liquid oxygen aboard the Delta II first stage

At this time there is a 40 percent probability of not meeting the launch weather criteria during the one hour launch opportunity

Spacecraft: Wide-field Infrared Survey Explorer (WISE) Launch Vehicle: Delta II 7320 Launch Pad: SLC-2, Vandenberg Air Force Base, Calif Launch Date: Dec 7, 2009 Launch Window: 9:10 - 9:23 a m EST

At the Astrotech payload processing facility on north Vandenberg, WISE spacecraft testing continues This week the Mission Sequence Test and Operational Readiness Test are under way and will conclude next week

Build-up of the Delta II at Space Launch Complex 2 is scheduled to begin on Oct 19 with hoisting of the first stage into the launcher

Spacecraft: Solar Dynamics Observatory (SDO) Launch Vehicle: Atlas V-401 Launch Pad: Launch Complex 41, Cape Canaveral Air Force Station, Fla Launch Date: Feb 3, 2010 Launch Window: 10:53 - 11:53 a m EST

With the launch being rescheduled to Feb 3, 2010 the SDO spacecraft is in a dwell period at Astrotech There is no testing or processing activity currently under way Spacecraft launch preparations are currently planned to resume on Sept 28

Previous status reports are available at:

http://www nasa gov/centers/kennedy/launchingrockets/status/index html

-end-

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