What was the 17th of the 19th block IIA satellites to be launched under the radio-navigation formerly known as "Navatstar"?
USA-126: USA-126, also known as GPS IIA-17, GPS II-26 and GPS SVN-40, is an American navigation satellite which forms part of the Global Positioning System. Global Positioning System: The Global Positioning System (GPS), originally Navstar GPS, is a space-based radionavigation system owned by the United States government and operated by the United States Air Force.
i don't know