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Planetary News: Asteroids and Comets (2007)Dawn Launch Postponed to Sunday, July 8July 5, 2007
NASA has postponed the launch of the Dawn spacecraft aboard a United Launch Alliance Delta II rocket for 24 hours. New launch date is July 8, with the launch window extending from 4:04 to 4:33 p.m. EDT. A lightning advisory this morning precluded the start of the Delta II second stage fueling as scheduled. If weather remains unacceptable this afternoon, fueling will be performed on Friday. Also this morning, the temperature within the fairing was causing the required temperature of the second stage to be too warm for fueling to begin. The fairing temperature is being lowered by ten degrees so that loading of oxidizer can begin this afternoon if weather is acceptable. The countdown dress rehearsal scheduled for today has also been postponed until Friday. The launch window on Sunday, July 8, extends from 4:04 to 4:33 p.m. EDT. The chance of not meeting the launch weather criteria on Sunday is 60 percent. Required launch telemetry assets downrange will be in place to support the launch. Watch The Planetary Society's weblog for coverage of Sunday's launch events. |
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