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Platforms > Space-based Platforms > Earth Observation Satellites > PAGEOS 1

Preferred term

PAGEOS 1  

Definition

  • Spacecraft Brief Description The PAGEOS (Passive Geodetic Earth Orbiting Satellite) spacecraft was a 30.48-m inflatable sphere, and had no instrumentation on board. It was the second (following GEOS 1) NASA satellite in the National Geodetic Satellites Program. PAGEOS 1 was made up of 84 gores and 2 pole caps of 0.0127-mm aluminized mylar film. The gores were 48 m long with maximum width of 1.24 m and the pole caps were 1.02 m in diameter. The primary purpose of the satellite was to provide a tracking target for geodetic purposes. It had a specular reflectance of 0.862, and a diffuse reflectance of 0.029, providing a reflecting light source whose brightness was relatively independent of observer-satellite-sun phase angle. The surface was also 97% reflectant for microwave energy in the range from 17 to 4E5 kHz. The launch, orbit, separation, inflation and initial operation were nominal, with more than 40 ground stations participating in the observation program. The orbit was generally considered too high for drag-density study, although some work was done in this area by the Smithsonian Astrophysical Observatory. For a more detailed description, see David E. Bowker, 'PAGEOS Project Compilation of Information for Use of Experimenter' (TRF B01718), NASA-TM-X-1344, 1967. Auxiliary Information Launch Date and Time : 1966-06-24 00:14:00 Epoch Date and Time : 1966-06-24 Orbit Type : Geocentric Apogee(km) : 4271. Perigee(km) : 4207. Inclination : 87.14 Date of last update : 1985-07-17 Group: Platform_Details Entry_ID: PAGEOS 1 Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: PAGEOS 1 Long_Name: Passive Geodetic Earth Orbiting Satellite 1 End_Group Group: Synonymous_Platform_Names Short_Name: PAGEOS 1 End_Group Group: Orbit Orbit_Inclination: 85.40 deg Period: 177.10 min Perigee: 3,913 km Apogee: 4,220 km End_Group Creation_Date: 2007-11-21 Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1966-056A Sample_Image: http://celebrating200years.noaa.gov/foundations/satellite_geodesy/pageos_500.jpg Group: Platform_Logistics Launch_Date: 1966-06-24 Launch_Site: Vandenberg Air Force Base, USA Primary_Sponsor: NASA End_Group End_Group (en)

Broader concept

Change note

  • 2021-11-18 12:45:00.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (PAGEOS 1 [43a6ecc5-a1d4-4b89-8d4d-e04a10264ab6,826192] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875]);
  • 2021-11-18 12:50:39.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (PAGEOS 1 [43a6ecc5-a1d4-4b89-8d4d-e04a10264ab6,826192] - Earth Observation Satellites [3466eed1-2fbb-49bf-ab0b-dc08731d502b,826121]);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/43a6ecc5-a1d4-4b89-8d4d-e04a10264ab6

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