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About TDRS 4
Group: 3 satellites
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Two-Line Element Set
1 19883U 89021B 26106.03377970 -.00000198 00000-0 00000-0 0 9999
2 19883 12.8163 355.3810 0018569 318.7131 225.1621 0.98483645307433
Epoch: Apr 16, 2026 •
Age: 29 hours
Current Status
Altitude 36262.0 km
Velocity 3.06 km/s
Sub-Earth Point -12.42°S,
45.47°W
Launch Date Mar 13, 1989
Age 37 years
Type other
Technical Details
Classification Payload
Mass 2245.00 kg
Dry Mass 1673.00 kg
Total Mass 2245.00 kg
Length 1.30 m
Diameter 2.40 m
Span 17.40 m
Shape Box + Dish + 2 Pan
Manufacturer TRW
Bus Type TDRS
Phase Status In Orbit
Owner/State GSFC/US
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