@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/8ba6dbf3-9537-4c10-8254-128d49ef9c17>
  ns0:resource [ ] ;
  skos:definition """- Spacecraft Brief Description -
The Magsat project was a joint NASA/United States Geological Survey (USGS)
effort to measure near-earth magnetic fields on a global basis. Objectives
included obtaining an accurate description of the earth's magnetic field,
obtaining data for use in the update and refinement of world and regional
magnetic charts, compilation of a global crustal magnetic anomaly map, and
interpretation of that map in terms of geologic/geophysical models of the
earth's crust. The spacecraft was launched into a low, near-polar, orbit by the
Scout vehicle. The basic spacecraft was made up of two distinct parts: the
instrument module that contained a vector and a scalar magnetometer and their
unique supporting gear; and the base module that contained the necessary
data-handling, power, communications, command, and attitude-control subsystems
to support the instrument module. The base module complete with its subsystems
was comprised of residual Small Astronomy Satellite (SAS-C) hardware. The
magnetometers were deployed after launch to a position 6 m behind the
spacecraft. At this distance, the influence of magnetic materials from the
instrument and base module (chiefly from the star cameras) was less than 1 nT.
                  - Auxiliary Information -
    Launch Date and Time :  1979-10-30 14:16:00
    Epoch Date and Time  :  1979-10-31
    Apogee (km or AU):      578.4
    Perigee (km or AU):     351.9
    Inclination (degree) :  96.8
    Orbit Type :            Geocentric
    Information last updated on 1992-04-13


Group: Platform_Details
   Entry_ID: MAGSAT
   Group: Platform_Identification
      Platform_Category: Earth Observation Satellites
      Short_Name: MAGSAT
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: AEM-3
   End_Group
   Group: Orbit
      Orbit_Inclination: 96.8 deg
      Perigee: 351.9 km
      Apogee: 578.4 km
   End_Group
   Creation_Date: 2007-11-20
   Online_Resource: http://www.daviddarling.info/encyclopedia/M/Magsat.html
   Sample_Image: http://www.daviddarling.info/images/Magsat.jpg
   Group: Platform_Logistics
      Launch_Date: 1979-10-30
      Launch_Site: Vandenberg Air Force Base, USA
      Primary_Sponsor: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "MAGSAT"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/3466eed1-2fbb-49bf-ab0b-dc08731d502b> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/3466eed1-2fbb-49bf-ab0b-dc08731d502b>
  skos:prefLabel "Earth Observation Satellites"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/8ba6dbf3-9537-4c10-8254-128d49ef9c17> .