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ERS 1

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ERS 1 is classified as:


NORAD ID: 21574
Int'l Code: 1991-050A
Perigee: 748.9 km
Apogee: 797.6 km
Inclination: 98.5 °
Period: 100.2 minutes
Semi major axis: 7144 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   19110.86364465  .00000043  00000-0  28747-4 0  9997
2 21574  98.5446  60.5077 0034090 107.6500 252.8414 14.37690989454248
Source of the keplerian elements: AFSPC