[FPSPACE] New Horizons has that dreaded word "anomaly"
kgottschalk at uwc.ac.za
Mon Jul 6 16:18:07 EDT 2015
this is not the sort of 4th of July news I was hoping for my US friends & partners. Happily the space probe has now recovered, but we definitely do not want another of these over the next fourteen days. yours, Keith.
July 4, 2015 New Horizons Team Responds to Spacecraft Anomaly The New Horizons spacecraft experienced an anomaly this afternoon that led to a loss of communication with Earth. Communication has since been reestablished and the spacecraft is healthy.
The mission operations center at the Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, lost contact with the unmanned spacecraft -- now 10 days from arrival at Pluto -- at 1:54 p.m. EDT, and regained communications with New Horizons at 3:15 p.m. EDT, through NASA?s Deep Space Network.
During that time the autonomous autopilot on board the spacecraft recognized a problem and ? as it?s programmed to do in such a situation ? switched from the main to the backup computer. The autopilot placed the spacecraft in ?safe mode,? and commanded the backup computer to reinitiate communication with Earth. New Horizons then began to transmit telemetry to help engineers diagnose the problem.
A New Horizons Anomaly Review Board was convened at 4 p.m. EDT to gather information on the problem and initiate a recovery plan. The team is now working to return New Horizons to its original flight plan. Due to the 9-hour, round trip communication delay that results from operating a spacecraft almost 3 billion miles (4.9 billion kilometers) from Earth, full recovery is expected to take from one to several days; New Horizons will be temporarily unable to collect science data during that time.
Status updates will be issued as new information is available.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the FPSPACE