Six Days and Still No Signal
8/21/02
After six days, the Mission Operations team has yet to hear a signal from the CONTOUR spacecraft.
Two objects, believed to be spacecraft segments, were detected Aug. 16, the day after the solid rocket motor burn, and a third more distant object
has since been found. The objects are now more than 2 million kilometers from Earth, traveling at a steady 6.1 kilometers per second (3.8 miles per
second or 13,600 miles per hour). They remain on a trajectory predicted by early observations; although they have now traveled so far from the Sun
and Earth that more observations are unlikely.
If the spacecraft is still capable of operating, by Thursday, Aug. 22, it will have completed the first cycle of having each of its two transmitters
attempt to send a signal through each of three antennas. Near continuous monitoring for CONTOUR continues through Sunday. After that, efforts will be
scaled back to once a week - a schedule that will be maintained until early December when the spacecraft will come into a more favorable angle for
receiving a signal from Earth. Deep Space Network coverage will extend through this weekend.
As far as contacting the spacecraft this week, Dr. Robert Farquhar, CONTOUR mission director from the Johns Hopkins Applied Physics Laboratory says,
"We know there's not much room for optimism through this week. Even the second week of December, when we have our best shot, chances are small. But
it's still worth monitoring."
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