Reinmuth also named his two discoveries , 1673 van Houten and 1674 Groeneveld , after the prolific couple of Dutch astronomers .
Together with Ingrid , Reinmuth discovered the minor planet 1691 Oort in 1956 .
Reinmuth also named Reinmuth 's two discoveries , 1673 van Houten and 1674 Groeneveld , after the prolific couple of Dutch astronomers .
Together with Ingrid , Reinmuth discovered the minor planet 1691 Oort in 1956 .