1996 AS20 is an outer-system asteroid discovered on January 14, 1996, by Robert Jedicke and James Victor Scotti at Kitt Peak Observatory near Sells, Arizona. It has a period of 219 years, 126 days and is thought to be about 60 kilometers(about 45 miles) in diameter.
Astrologically, 1996 AS20 has been linked to crises, birth, death, endings and new beginnings, transitions and attitudes toward these things, predation, becoming vulnerable, coming under attack, attempts to crush.
However, its orbit is so poorly known that I don't recommend its use in astrology at this time.