Near miss for amateur radio satellite

Drew – KO4MA,  received a warning from the US Joint Space Operations Center, located at Vandenberg Air Force Base, California on Sunday, February 28 that the amateur radio satellite AO-51 would have a close approach to another satellite, FORMOSAT 3-D, on Monday at 1056 UTC.

This occurred over the Eastern US, with many stations on hand capable of receiving telemetry from AO-51 before and after the near miss.

The predicted miss distance was 953 meters, which is over 3000 feet overall but the radial difference between the two orbits was only 39 meters. eaten up rather quickly!”

In preparation for the close encounter, K04MA shut off the S band tran- smitter and turned on the digital downlink at 2 watts, with telemetry transmitted every 5 seconds. The next morning, on March 1, Drew was able to post a message that AO-51 was alive and well, “It looks like we are fine. A second warning email this morning from the Air Force called it even closer, but everything was working at LOS this pass.”

FORMOSAT-3 is a constellation of satellites launched on April 15, 2006 and is a joint U.S.-Taiwanese project with major participants including the University Corporation for Atmospheric Research (UCAR), the National Science Foundation, the Naval Research Laboratory (NRL), the Air Force Research Laboratory (AFRL) on the U.S. side and the National Space Organization (NSPO) on the Taiwanese side.

For more information on the AO-51 project
http://www.amsat.org/amsat-new/echo/

The AO-51 Operations Group is made up of Amsat Members who are also AO-51 users. The Operations Group works with the Command Team to create the monthly schedule for the satellite. The AO-51 Operations Group is  OZ1MY, VK5HI, N8BBQ, KD8CAO. The Command Stations are KO4MA, WA4SXM, WA6FWF, and N8MH.

Want to learn more about amateur radio satellites?
Here’s a collection of documents for new satellite users.
http://www.amsat.org/amsat-new/information/faqs/

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