<nowiki>SECOR; Sequential Collation of Range; SECOR; SECOR; SECOR; SECOR; SECOR; SECOR; American military program in geodesy research; US-amerikanisches Satellitenprogramm; ameriški vojaški raziskovalni program na področju satelitske geodezije; Sequential Collation of Ranges; EGRS; Electronic & Geodetic Ranging Satellite; Sequential Collation of Ranges; SECOR; Sequential Collation of Range</nowiki>
SECOR 
American military program in geodesy research
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SECOR (Sequential Collation of Ranges) was a series of small United States Armed Forces satellites launched in the 1960s for geodesy measurements.

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This category has the following 2 subcategories, out of 2 total.

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