MSTI 1, also known as MSTI-1, is a US satellite with a NORAD catalog ID of 22229 and an object ID of 1992-078A. Launched on November 21, 1992, from the AFWTR launch site at SLC5 using a Scout G-1 launch vehicle, MSTI 1 was designed for research purposes by JPL/SPA under the ownership of AFPLH/SDIO. The satellite has dimensions of 1.4 meters in length, 1 meter in diameter, and 2 meters in span, with a dry mass of 147 kilograms and launched at the same weight. It features solar cells and batteries for power generation. MSTI 1's configuration is SA-200S, and its shape consists of a box with a pan design, having an RCS value of 0.84. The satellite’s motor and equipment details are unspecified. Its mission was intended to last up to 6 days but reached 150 days in operation.