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ERS 1

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ERS 1 is classified as:


NORAD ID: 21574
Int'l Code: 1991-050A
Perigee: 749.1 km
Apogee: 796.6 km
Inclination: 98.7 °
Period: 100.2 minutes
Semi major axis: 7143 km
RCS: 11.0086 m2 (large)
Launch date: July 17, 1991
Source: European Space Agency (ESA)
Launch site: FRENCH GUIANA (FRGUI)
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 21574U 91050A   21261.46925226  .00000033  00000-0  25757-4 0  9998
2 21574  98.6571 222.5939 0033261   7.7223 352.4469 14.37814791580938
Source of the keplerian elements: AFSPC