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

<https://gcmd.earthdata.nasa.gov/kms/concept/8e8b7689-0a8e-47a4-9c68-5f6a207104d5>
  skos:prefLabel "Solar/Space Observation Satellites"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/1f48df58-92d6-4f8c-bb95-872709133d7b> .

<https://gcmd.earthdata.nasa.gov/kms/concept/1f48df58-92d6-4f8c-bb95-872709133d7b>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """The Compton Gamma Ray Observatory (GRO) was the second of NASA's
Great Observatories. Compton, at 17 tons, was the heaviest
astrophysical payload ever flown at the time of its launch on
April 5, 1991 aboard the space shuttle Atlantis. Compton was
safely deorbited and re-entered the Earth's atmosphere on June
4, 2000.

The objective of the Compton GRO was to make comprehensive
observations of gamma ray sources throughout the Universe. The
observatory carried four scientific instruments that made gamma
ray energy measurements from 0.1 million electron volts to
30,000 million electron volts.

The end of life was in June 2000. The failure of 1 gyroscope
requires the deorbitation of the satellite in order to make sure
it will not fall in a populated area. It is too large to
completely burn in the atmosphere.

Specifications:

Prime contractor: TRW
Dimension: 7.7 x 5.5 x 4.6 m
Mass at launch: 15622 kg
Dry mass: 13800 kg
Solar array: 21.5 m
Stabilization: 3-axis
DC power:  EOL: 3980 W
Design lifetime:  2 years (min)

Additional information available at
"http://cossc.gsfc.nasa.gov/"

[Summary provided by NASA and The Satellite Encyclopedia]


Group: Platform_Details
   Entry_ID: GRO
   Group: Platform_Identification
      Platform_Category: Solar/Space Observation Satellites
      Short_Name: GRO
      Long_Name: Gamma-Ray Observatory
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: CGRO
      Short_Name: GRO
      Short_Name: 1991-027B
      Short_Name: 20225
   End_Group
   Group: Platform_Associated_Instruments
      Short_Name: BATSE
   End_Group
   Group: Orbit
      Orbit_Inclination: 28.5 degrees
      Period: 90 m
      Perigee: 362 km
      Apogee: 457 km
      Orbit_Type: LEO > Low Earth Orbit > Inclined Non-Polar
   End_Group
   Online_Resource: http://cossc.gsfc.nasa.gov/docs/cgro/index.html
   Sample_Image: http://nssdc.gsfc.nasa.gov/image/spacecraft/cgro.jpg
   Group: Platform_Logistics
      Launch_Date: 1991-04-05
      Launch_Site: Cape Canaveral/Kennedy Space Center, USA
      Primary_Sponsor: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "GRO"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/8e8b7689-0a8e-47a4-9c68-5f6a207104d5> ;
  a skos:Concept .