Diadem
type: Concept

DIADEM-1D
type: Concept
in scheme: platforms
definition: Diademe-1 D1C and Diadème-2 D1D were launched by CNES, one week apart in February 1967 into elliptical orbits. Both Diadème satellites were geodetic missions. These satellites were magnetically stabilized which limited their trackability in the southern hemisphere. Group: Platform_Details Entry_ID: DIADEM-1D Group: Platform_Identification Platform_Category: Earth Observation Satellites Platform_Series_or_Entity: DIADEM Short_Name: DIADEM-1D End_Group Group: Synonymous_Platform_Names Short_Name: DIADEM-1C End_Group Group: Platform_Associated_Instruments Short_Name: DOPPLER BEACONS End_Group Group: Orbit Orbit_Inclination: 39.5 degrees Period: 108 minutes Perigee: 570 km Orbit_Type: HEO > Highly Elliptical Orbit End_Group Creation_Date: 2007-09-12 Online_Resource: http://ilrs.gsfc.nasa.gov/satellite_missions/list_of_satellites/di1d_general.html Sample_Image: http://ilrs.gsfc.nasa.gov/satellite_missions/slr_sats_pics/diadem.gif Group: Platform_Logistics Launch_Date: 1967-02-15 Primary_Sponsor: CNES End_Group End_Group