Fries, Colin (June 25, 2007). "Chronology of Wakeup Calls"(PDF). NASA. Archived from the original(PDF) on December 20, 2023. Retrieved August 13, 2007. This article incorporates text from this source, which is in the public domain.
planet4589.org
"SATCAT". Jonathan's Space Report. January 6, 2022. Retrieved January 11, 2022.
Fries, Colin (June 25, 2007). "Chronology of Wakeup Calls"(PDF). NASA. Archived from the original(PDF) on December 20, 2023. Retrieved August 13, 2007. This article incorporates text from this source, which is in the public domain.