IRIDIUM 74 is a communication satellite launched by the United States on May 17, 1998, from Cape Canaveral Air Force Station using a Delta 7920-10C launch vehicle. The spacecraft has dimensions of 3.5 meters in length and 1 meter in diameter with a span of 5 meters. It had a dry mass of 556 kilograms and was launched with a total mass of 662 kilograms. IRIDIUM 74 is part of the Iridium constellation, specifically designated as Iridium SV074, and its mission focuses on communication services. The satellite uses two deployable solar arrays for power generation alongside batteries. It has a box shape with two panels and a radar cross-section (RCS) of 3.231 square meters. The operational lifetime of IRIDIUM 74 is projected to be approximately 8 years.