@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/e54cff9a-7866-448b-adad-88b344021e3c>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """AIMP-1 (also known as AIMP-D or IMP-D or Explorer 33, NSSDC ID: 66-058A) was launched into a lunar orbit in order to 'anchor' it to the lunar distance from the earth.  AIMP-1 was a spin-stabilized spacecraft with spin axis parallel to the ecliptic plane, and spin period varying between 2.2 sec and 3.6 sec.  The spacecraft was instrumented for studies of interplanetary plasma, energetic charged particles [electrons, protons and helium ions (alpha particles)], magnetic fields, and solar X-rays at lunar distances. Unfortunately, the spacecraft failed to achieve lunar orbit but did achieve major mission objectives.  The initial AIMP-1 apogee occurred at about 16:00 hour local time.  Over the first 3-year period, perigee varied between 6 earth radii and 44 earth radii and apogee varied between 70 earth radii and 135 earth radii.  The inclination with respect to the equatorial plane of the earth varied between 7 degrees and 60 degrees.  


Group: Platform_Details
   Entry_ID: EXPLORER-33
   Group: Platform_Identification
      Platform_Category: Solar/Space Observation Satellites
      Platform_Series_or_Entity: EXPLORER
      Short_Name: EXPLORER-33
      Long_Name: Interplanetary Monitoring Platform D (IMP-D)
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: Explorer 33 
      Short_Name: AIMP-D 
      Short_Name: IMP-D
   End_Group
   Group: Orbit
      Orbit_Inclination: 24.4 degrees
      Period: 3879 min
      Perigee: 2657 km
      Apogee: 4808 km
   End_Group
   Creation_Date: 2007-12-14
   Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1966-058A
   Sample_Image: http://nssdc.gsfc.nasa.gov/image/spacecraft/explorer33.jpg
   Group: Platform_Logistics
      Launch_Date: 1966-07-01
      Launch_Site: Cape Canaveral/Kennedy Space Center, USA
      Primary_Sponsor: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "EXPLORER-33"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/182e52f4-6ce7-42e3-b50e-42a3725eeca3> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/182e52f4-6ce7-42e3-b50e-42a3725eeca3>
  skos:prefLabel "EXPLORER"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/e54cff9a-7866-448b-adad-88b344021e3c> .