Operational
Calsphere 1
Calsphere 1 is a featureless metal sphere launched to help calibrate early radar and space-tracking systems. With no electronics to fail, it has been continuously catalogued for six decades.
Technical specifications
CATEGORY
Historic
TYPE
Sphere
COUNTRY
United States
OPERATOR
U.S. Navy
LAUNCH DATE
Oct 6, 1964
LAUNCH SITE
Vandenberg
ORBIT CLASS
LEO
ALTITUDE · KM
976
ORBITAL PERIOD · MIN
104.6
INCLINATION · DEG
90.22
APOGEE · KM
994
PERIGEE · KM
958
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