updated: Dec 04, 2013, 8:24 PM
Source: Launch Alert
An Atlas V rocket carrying a national security payload is scheduled
for launch from south Vandenberg AFB late on the evening of December
If everything goes according to plan, the rocket will depart Space
Launch Complex 3 at 23:13 PST during an unspecified launch window,
head southward, and carry a classified National Reconnaissance Office
payload and several small satellites into orbit.
Although liftoff is slated for 23:13 PST, weather, technical, or other
problems could delay the launch for several minutes or longer. Liftoff
can therefore happen at any time during the window. The launch could
also be rescheduled for another evening.
The latest weather forecast calls for only a 20% probability of
acceptable weather at launch time. Should the launch be delayed until
late Friday evening, the probability of acceptable weather at launch
time is 40%.
If the sky is clear, the launch could be visible to the naked eye as
far away as San Francisco, Sacramento, Fresno, and San Diego, Calif.
Under very good conditions, experienced observers with dark skies and
an unobstructed horizon may be able to see the launch with the
unaided eye from Petaluma and Sacramento, Calif.; Lake Tahoe; Las
Vegas, Nevada; western Arizona; and northwestern Mexico.
The Moon will not affect launch viewing because it will be below the
horizon and only 15% illuminated at launch time.
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