Tracking 19562 objects as of 22-Mar-2019
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SBIRS GEO 3 (USA 273)

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NORAD ID: 41937
Int'l Code: 2017-004A
Perigee: 35,784.5 km
Apogee: 35,803.2 km
Inclination: 4.7 °
Period: 1,436.1 minutes
Semi major axis: 42164 km
RCS: Unknown
Launch date: January 21, 2017
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 41937U 17004A   19080.77896562 +.00000099 +00000-0 +00000-0 0  9992
2 41937 004.6840 312.5747 0002213 051.4626 295.9498 01.00271366008087
Source of the keplerian elements: McCants