In February 2007, the fourth and last satellite of the BeiDou-1 system, BeiDou-1D (sometimes called BeiDou-2A, serving as a backup satellite), was sent up into space. It was reported that the satellite had suffered from a control system malfunction but was then fully restored.
In February 2007 , the fourth and last satellite of the BeiDou-1 system , BeiDou-1D ( sometimes called BeiDou-2A , serving as a backup satellite ) , was sent up into space . It was reported that the satellite had suffered from a control system malfunction but was then fully restored .
When was the fourth satellite for the BeiDou-1 system launched?
When was the fourth satellite for the BeiDou-1 system launched ?
February 2007
February 2007