Deep Space 1

Deep Space 1 (DS1) was a NASA spacecraft which was launched in 1998, flew by asteroid 9969 Braille in 1999 and comet 19P/Borrelly in 2001, after which it was deactivated. The original intent was the flybys as well as testing new instrument and spacecraft technologies, including solar electric propulsion (an ion engine). Spacecraft problems affected the ultimate choice of targets. The first flyby was not completely successful, having been designed to pass closer and acquire better images, and the original plan intended the second flyby to be by a different comet. Instruments:

• PEPE - Plasma Experiment for Planetary Exploration.
• MICAS - Miniature Integrated Camera and Spectrometer.