Japan will launch an engineering test satellite aboard its domestically developed H2-A rocket in December, the nation's space agency, quoted by an Associated Press report said.The Associated Press report said the satellite will be used for telecommunications and to conduct sensitive measurements of time, calibrating a high-precision clock on board with the ground.The H2-A will be the 11th Japan has launched. It is to be launched on Dec. 16, with a window allowing for delays through February 28, the report said.The launch would be the first of an H2-A since Japan launched its third intelligence-gathering satellite in September. The rocket is the workhorse of Japan's space program, the report said.