PIA02136: A Cyber-Astronaut's Final Moves
 Target Name:  Tempel 1
 Is a satellite of:  Sol (our sun)
 Mission:  Deep Impact
 Spacecraft:  Deep Impact
 Instrument:  Autonomous Navigation System 
 Product Size:  720 x 540 pixels (w x h)
 Produced By:  University of Maryland
 Full-Res TIFF:  PIA02136.tif (1.168 MB)
 Full-Res JPEG:  PIA02136.jpg (15.58 kB)

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This image shows how Deep Impact's impactor targeted comet Tempel 1 as the spacecraft made its final approach in the early morning hours of July 4, Eastern time. The autonomous navigation system on the probe was designed to make as many as three impactor targeting maneuvers, identified as ITMs in this picture, to correct its course to the comet.

The upper left dot indicates where the probe would have passed the comet's nucleus if no maneuvers were performed. The dot below the nucleus shows where the probe would have flown past the comet if only the first maneuver was made. The leftmost dot on the nucleus marks the spot where the probe would have crunched the comet if only the first two maneuvers had been performed. The lower dot on the nucleus indicates the vicinity where, once the third maneuver was performed, the probe met its final reward and collided with the comet.

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