(21628) Lucashof = 1999 ND4 Lucas Hudson Hofmeister (b. 1988) was awarded second place in the 2005 Intel International Science and Engineering Fair for his engineering project. He attends the Martin Luther King, Jr. Magnet High School, Nashville, Tennessee, U.S.A.
A complete set of naming citations of the numbered minor planets is available in the Dictionary of Minor Planet Names, edited by Lutz Schmadel.