Martin Altmann: Heildelberg University, Germany
Dana Casetti: Southern Connecticut State University, USA
Erik Høg: Copenhagen University, Niels Bohr Institute, Denmark
Elliott Horch: Southern Connecticut State University, USA
Dante Minniti: Universidad Nacional Andres Bello, Chile
Claus Fabricius: Institut d'Estudis Espacials de Catalunya, Spain
William Van Altena: Yale University, USA
Norbert Zacharias: United States Naval Observatory, USA