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UFO 10 (USA 146) (25967)
COSPAR: 1999-063A | Alt Name: UHF F/O F10
Image
Additional Sources
Launch Details
Launch Date
November 23, 1999
Launch Site
Launch Pad
SLC36B
Launch Vehicle
Atlas IIA
Orbital Elements
NORAD ID
25967
International Designator
1999-063A
Epoch
Fri, 03 Jul 2026 08:41:34 GMT
Apogee
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Perigee
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Inclination
9.85°
Right Ascension
27.12°
Eccentricity
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Argument of Perigee
90.70°
Period
1436.06 min
Mean Motion
1.00 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
UFO 10 (USA 146)
Alternative Name
UHF F/O F10
Type
Payload
Status
Operational
Owner
PMW146
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 25967U 99063A 26184.36220194 -.00000181 00000-0 00000-0 0 9995
2 25967 9.8455 27.1245 0002085 90.6970 270.9591 1.00274578 97518
Source: Celestrak
Summary
UFO 10 (USA 146), also known as UHF F/O F10, is a communication satellite operated by PMW146 and owned by the United States. It was launched on November 23, 1999, from SLC36B at AFETR using an Atlas IIA launch vehicle. The spacecraft has dimensions of 6.7 meters in length, 3.4 meters in diameter, and a span of 26.2 meters with two deployable solar arrays providing power. It carries UHF, EHF, GBS (Ka-Band) transponders as its payload equipment. With a dry mass of 1350 kg and an initial launch mass of 3205 kg, the satellite is based on the HS-601 bus configuration manufactured by HSES. The operational mission life spanned approximately 14 years.
Physical Characteristics
Length
6.7
Diameter
3.4
Span
26.2
Dry Mass
1350
Launch Mass
3205
Shape
Box + 2 Pan
Radar Cross Section
0.5186
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
UFO F10
Purpose
Communication
Mission
Communication
Manufacturer
HSES
Life Expectancy
14 years
Bus
HS-601
Configuration
HS-601
Motor
R-4D-11-300
Equipment
UHF, EHF, GBS (Ka-Band) transponders
Power System
2 deployable solar arrays, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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