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Payload
UFO 8 (USA 138)
Nonoperational
Payload
GEO
A catalogued spacecraft payload.
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Launch
Launch date
March 16, 1998 at 09:32 PM UTC
Launch site
Cape Canaveral SFS, USA
Launched by
Atlas II →
Operator
Lockheed Martin
Mission
UHF F/O F8
Launch record
View full launch →
Orbit
Orbit regime
GEO
Apoapsis
35,804 km
Periapsis
35,770 km
Inclination
11.13°
Orbital period
1436.12 min
Spacecraft
Operator
US Navy
Manufacturer
Boeing Satellite Systems
Users
Military
Launch mass
3,206 kg
Dry mass
1,545 kg
Design lifetime
4 years
Identity
COSPAR (Int'l)
1998-016A
NORAD catalog №
25258
Object type
Payload
Owner / operator
United States
Radar cross-section
14.1421 m²
Status
Nonoperational
End of mission
Fate
No longer operational — remains in orbit as inactive.
Final status
Nonoperational