Tags: Asteroid.
4217 Engelhardt is a main-belt asteroid discovered on January 24 1988 by Carolyn S. Shoemaker at Palomar Observatory. Its provisional designation was 1988 BO2. It is named after the Baltic German geologist and mineralogist Wolf von Engelhardt (1910–2008). The asteroid is estimated to be about 9 km in diameter.Engelhardt will pass about 0.0017 AU (250000 km; 160000 mi) from Earth threatening asteroid (29075) 1950 DA in 2736.