Question: What was the 17th of the 19th block IIA satellites to be launched under the radio-navigation formerly known as "Navatstar"?

Context paragraphs:
USA-128: USA-128, also known as GPS IIA-18, GPS II-27 and GPS SVN-30, is an American navigation satellite which forms part of the Global Positioning System.  It was the eighteenth of nineteen Block IIA GPS satellites to be launched.

USA-117: USA-117, also known as GPS IIA-16, GPS II-25 and GPS SVN-33, is an American navigation satellite which forms part of the Global Positioning System.  It was the sixteenth of nineteen Block IIA GPS satellites to be launched.

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.  It is a global navigation satellite system that provides geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites.

USA-135: USA-135, also known as GPS IIA-19, GPS II-28 and GPS SVN-38, is an American navigation satellite which forms part of the Global Positioning System.  It was the last of nineteen Block IIA GPS satellites to be launched.

USA-87: USA-87, also known as GPS IIA-8, GPS II-17 and GPS SVN-29, was an American navigation satellite which formed part of the Global Positioning System.  It was the eighth of nineteen Block IIA GPS satellites to be launched.

USA-94: USA-94, also known as GPS IIA-13, GPS II-22 and GPS SVN-35, was an American navigation satellite which formed part of the Global Positioning System.  It was the thirteenth of nineteen Block IIA GPS satellites to be launched.

USA-92: USA-92, also known as GPS IIA-12, GPS II-21, GPS SVN-39, and NAVSTAR 39, is an American navigation satellite which forms part of the Global Positioning System.  It was the twelfth of nineteen Block IIA GPS satellites to be launched.

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.  It was the seventeenth of nineteen Block IIA GPS satellites to be launched.

USA-96: USA-96, also known as GPS IIA-14, GPS II-23 and GPS SVN-34, was an American navigation satellite which formed part of the Global Positioning System.  It was the fourteenth of nineteen Block IIA GPS satellites to be launched.

USA-100: USA-100, also known as GPS IIA-15, GPS II-24 and GPS SVN-36, is an American navigation satellite which forms part of the Global Positioning System.  It was the fifteenth of nineteen Block IIA GPS satellites to be launched.

Supporting paragraphs: USA-126 Global Positioning System
Answer: USA-126