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GEOS-2 GEOS-B Explorer 36 Geodetic Earth Orbiting Satellite Spacecraft Family

GEOS-2, also known as GEOS-B and Explorer 36, was a NASA geodetic Earth-orbiting satellite launched on January 11, 1968. Optical beacons, C-band radar transponders, SECOR and range-rate systems, Doppler beacons, and laser retroreflectors supported precise tracking, gravity-field determination, geodetic datum improvement, and calibration of international tracking networks.

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Identity

Aliases
GEOS-2GEOS 2GEOS-BGEOS BExplorer 36Explorer XXXVI1968 002AGEOS-2 spacecraft
Family Name
GEOS-2
Full Name
GEOS-2 GEOS-B Explorer 36 Geodetic Earth Orbiting Satellite Spacecraft Family
Roles
orbiterobservatoryresearchtechnology_demonstrator
Status
retired
Type
spacecraft

Details

Description
GEOS-2, also known as GEOS-B and Explorer 36, was a NASA geodetic Earth-orbiting satellite launched on January 11, 1968. Optical beacons, C-band radar transponders, SECOR and range-rate systems, Doppler beacons, and laser retroreflectors supported precise tracking, gravity-field determination, geodetic datum improvement, and calibration of international tracking networks.
First Flight Year
1,968
Operator

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Creation Time
August 14, 2026 at 07:51:12 UTC
Updated Time
August 14, 2026 at 19:30:01 UTC