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1993-04-23
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PUBLIC INFORMATION OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109. TELEPHONE (213) 354-5011
FOR IMMEDIATE RELEASE
Contact with NASA's Voyager 1 spacecraft was re- ì
ì
established tonight following a series of commands ì
ì
transmitted from Earth, ordering Voyager to re-orient itself ì
ì
in space with its antenna pointed to Earth.
It had been determined that loss of radio contact ì
ì
with the craft on Thursday was due to the spacecraft's ì
ì
communication antenna being pointed away from Earth.
This occurred when an optical sensor had locked on ì
ì
the star Alpha Centauri instead of the star Canopus, placing ì
ì
the spacecraft in the wrong orientation for communication ì
ì
with Earth. Why this occurred it being analyzed.
Contact was lost following a course-correction ì
ì
maneuver in space, during which radio communication is ì
ì
blacked out, after which the spacecraft should have assumed ì
ì
the proper orientation for radio communications to Earth.
Voyager was 660 million miles from Earth when
contact was lost.
The craft is en-route to Saturn for a November, ì
ì
1980, rendezvous and was launched in September, 1977.
JPL manages the Voyager Mission for NASA.
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12/14/79