Asteroid 12625, Koopman, was discovered October 17, 1960 by C. J. van Houten and Ingrid van Houten-Groeneveld on photographic plates taken by Tom Gehrels at Palomar Mountain Observatory, as part of the Palomar-Leiden Survey. It has a period of 5 years, 184 days and is about 8 1/2 miles in diameter.
Elisabetha Koopman (1647-1693), daughter of a Dutch merchant (koopman is Dutch for "merchant"), was the second wife of Polish astronomer Johannes Hevelius. She assisted her husband with his astronomical observations, and after his death in 1687 she prepared his star atlas and catalogue for publication.
Elisabetha Koopman Hevelius
The meaning of asteroid Koopman, according to Henk Middelraad, seems to be :purchaser, procurer; other possibilities are assistant, or helpmate.