Asteroid 66583, Nicandra, was discovered on September 9, 1999 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro, New Mexico. It has a period of 4 years, 100 days and is about 3 3/4 miles in diameter.
It was named for the plant known as shoo-fly plant or apple of Peru (Nicandra physalodes), which is named for the Greek poet Nicander and is said to have insect repelling properties.
Nicandra physalodes, the shoo-fly plant
Astrologically, asteroid Nicandra seems to have to do with being repellent or off-putting, discouraging being approached.