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My simple blog of pictures of travel, friends, activities and the Universe we live in as we go slowly around the Sun.



September 11, 2013

LADEE to the Moon...

On September 6, a starry night and the Milky Way witnessed the launch of a Minotaur V rocket from NASA's Wallops Flight Facility on Wallops Island, Virginia. So did a large part of the eastern United States, as the spectacular night launch was easily visible even from light polluted urban areas. This 35 second exposure captures part of the rocket's initial launch streak and 2nd stage ignition flare along with a brilliant reflection
of the fiery sky in calm waters. The stunning view faces south and west from a vantage point overlooking Sinepuxent Bay in Maryland about 20 miles north of the launch pad. Heading east over the Atlantic, the multi-stage rocket placed LADEE, the Lunar Atmosphere and Dust Environment Explorer, into a highly elliptical Earth orbit to begin its journey to the Moon.

UPDATE:
After a spectacular launch, the Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft was placed by the Minotaur V launch vehicle into an elliptic orbit around Earth, as the start of our journey to the moon. After adjusting some fault protection settings to enable the reaction wheels, mission controllers at NASA's Ames Research Center in Moffett Field, Calif., successfully completed the initial systems checkout phase, and everything looks good so far. This checkout included spacecraft acquisition, tracking, and ranging by all the ground stations. The propulsion system also was activated to do a momentum dump, which means that the spacecraft spin and the reaction wheel spins were reduced together to a nominal state.

LADEE is doing fine and its trajectory to the moon is good. The LADEE spacecraft is currently in an elliptical orbit around Earth, about 162,000 miles (260,000 Km) in altitude. Mission controllers are now performing an extended checkout phase including guidance, navigation and control characterization, reaction control system tests, and on-board controller tuning.

The spacecraft was at the highest point in the current orbit (apogee) at 9:30 a.m. PDT, Tuesday Sept. 10. Then it will drop back down to a closest approach to Earth (perigee) at 9:38 a.m. PDT on Friday, Sept. 13, where we will perform an engine burn to boost its orbit.

LADEE will continue with two more of these elliptical orbits until it is captured around the moon to do its initial Lunar Orbit Insertion (LOI-1) burn on Sunday Oct. 6th. After that we are in lunar orbit. This LOI burn is one of the most critical phases of the mission, because without it working we do not get into lunar orbit.

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