Precursor services for a near-Earth object segment of ESA's Space Situational Awareness Programme

AWARENESS PROGRAMME. G. Drolshagen, E. Bassano, F. Bernardi, G. Hahn, D. Koschny, A. Milani, E. Perozzi, N. Sanchez, G. Valsecchi, S. Weikert, ESA/ESTEC (gerhard.drolshagen@esa,int) Telespazio (edmondo.bassano@telespazio.com), SpaceDyS (bernardi@spacedys.com), DLR (gerhard.hahn@dlr.de), ESA/ESTEC (detlef.koschny@esa.int), Univ. Pisa (milani@dm.unipi.it), Telespazio (ettore.perozzi@telespazio.com), Deimos (noelia.sanchez@deimos-space.com), INAF (Giovanni@iasfroma.inaf.it), Astos (sven.weikert@astos.de)