02.13.07

George H. Diller
Kennedy Space Center, Fla.
321-867-2468

STATUS REPORT: ELV-021307

EXPENDABLE LAUNCH VEHICLE STATUS REPORT

Mission: THEMIS (Time History of Events and Macroscale Interactions
During Substorms)
Launch Pad: 17-B, Cape Canaveral Air Force Station
Launch Vehicle: Delta II (United Launch Alliance)
Launch Date: Feb. 16, 2007
Launch Time: 6:05 - 6:23 p.m. EST

The launch of THEMIS aboard a Delta II rocket scheduled for Thursday,
Feb. 15, has been postponed 24 hours. Loading of hypergolic
propellants aboard the second stage of the vehicle was unable to be
completed today. Thunderstorms and severe weather moved into the Cape
Canaveral vicinity ahead of an advancing cold front that prevented
fueling from continuing. The launch window on Friday, Feb. 16,
extends from 6:05 to 6:23 p.m. EST.

The THEMIS prelaunch press conference and mission science briefing has
also been rescheduled one day to Thursday and will start at 3 p.m.
EST. All other events for the news media will be at their same times
one day later. Coverage of the launch on NASA Television will begin
at 3:45 p.m. EST on Friday.

Previous status reports are available on the Web at:

http://www.nasa.gov/centers/kennedy/launchingrockets/status/2007