Asteroid 2154, Underhill, was discovered on September 24, 1960 by C.J. Van Houten and Ingrid Van Houten-Groeneveld at Palomar Observatory near Pauma Valley, California. Underhill has a period of 4 years, 102 days.
It was named for Canadian astrophysicist Ann B. Underhill.
Astrologically, asteroid Underhill seems to indicate the upside (according to Damien Foor);a bunker mentality; surreal, cocooning; reclusive.
The glyph for Underhill is mine.