2.3.1 spase://CNES/Instrument/CDPP-AMDA/Cluster4/Ephemeris Ephemeris Cluster4 Ephemeris 2017-02-04T15:37:19Z Cluster 4 spacecraft positions in various coordinate systems spase://CNES/Person/Elena.Budnik TechnicalContact spase://SMWG/Instrument/Cluster2-Tango/Ephemeris Platform Spacecraft position spase://CNES/Observatory/CDPP-AMDA/Cluster4