Grail A Ebb Credit: Manufacturer Image |
Status: Operational 2011. First Launch: 2011-09-10. Last Launch: 2011-09-10. Number: 2 .
Grail A was deployed from the Delta upper stage at 14:28 GMT and Grail B at 14:37 GMT. The spacecraft reached the Sun-Earth L1 point 1.5 million km from Earth and then fell back towards the Moon. Lunar orbit insertion was at 01:00 GMt on 1 January 2012 for Grail A, and at 02:00 GMT on 2 January for Grail B. After completing their mission, the satellites were intentionally crashed onto the lunar surface at 75.62 deg N / 26.63 deg W on 17 December 2012 at 22:29 GMT.
Grail Gravity Recovery and Interior Laboratory. Twin lunar orbiters, versions of the earth-orbit Grace spacecraft, launched together. The mission was to use high-quality gravity field mapping of the moon to determine the moon's interior structure. Used the commercial LM-300 bus (see for launch record). Lunar gravity field mapping satellite built by NASA Jet Propulsion Laboratory (Prime), Lockheed Martin Space Systems (Spacecraft) for NASA Jet Propulsion Laboratory, USA. Launched 2011. |
NASA dual-spacecraft lunar gravity mapping mission. Grail A was deployed from the Delta upper stage at 14:28 GMT and Grail B at 14:37 GMT. The spacecraft reached the Sun-Earth L1 point 1.5 million km from Earth and then fell back towards the Moon. Lunar orbit insertion was at 01:00 GMt on 1 January 2012 for Grail A, and at 02:00 GMT on 2 January for Grail B. After completing their mission, the satellites were intentionally crashed onto the lunar surface at 75.62 deg N / 26.63 deg W on 17 December 2012 at 22:29 GMT.