BY JUSTIN RAY Follow the countdown and launch of the Orbital Science Taurus rocket carrying the OrbView-4 and QuikTOMS satellites. Reload this page for the very latest on the mission.				Flight data file Vehicle: Taurus (Model 2110) Payloads: OrbView-4 and QuikTOMS Launch date: Sept. 21, 2001 Launch window: 1849-1907 GMT (2:49-3:07 p.m. EDT) Launch site: SLC-576E, Vandenberg AFB, Calif. Satellite broadcast: GE-2, Trans. 11, Ku-band Pre-launch briefing Launch timeline - Chart with times and descriptions of events to occur during the launch. Ground track - See the trajectory the rocket will follow during its flight. Taurus vehicle data - Overview of the rocket to be used in this launch. OrbView-4 - Fact sheet on the commercial Earth-imaging satellite. QuikTOMS - Learn more about NASA's newest ozone monitor. Snapshot The mission patch. Credit: Orbital