ASTER is a remote sensor developed by MITI, Japan, on the platform EOS AM1, recently renamed Terra, fabricated by NASA, USA. The operation of the ASTER sensor will be jointly performed by Japan and USA. Currently, the launch of Terra is scheduled on early October at Vandenberg Launch Site, CA, USA. To keep this target date, ASTER Team is working with NASA. So far, many tests connecting the spacecraft Terra and Ground Segments including ASTER GDS have been conducted and it was shown that the interface between ASTER GDS and NASA is almost ready for Launch. The operation of ASTER will involve both Japan and US sides. Mission operation, which will accept complicated data acquisition schedule will be performed connecting US and Japan, and the test and exercises are being performed. The level 1 data processing will be done at ASTER GDS after having received the Level 0 data from NASA, either by media or by network. After the launch of Terra, ASTER Team expects to have 118 days of the Initial Checkout and the data distribution is planned after this time period.