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OSCAR 25 (19419)
COSPAR: 1988-074A | Alt Name: NNS 30250-25
Image
Additional Sources
Launch Details
Launch Date
August 25, 1988
Launch Site
AFWTR
Launch Pad
SLC5
Launch Vehicle
Scout G-1
Orbital Elements
NORAD ID
19419
International Designator
1988-074A
Epoch
Sat, 04 Jul 2026 07:02:47 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
90.04°
Right Ascension
21.03°
Eccentricity
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Argument of Perigee
26.68°
Period
107.25 min
Mean Motion
13.43 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
OSCAR 25
Alternative Name
NNS 30250-25
Type
Payload
Status
Unknown
Owner
NAVAIR
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 19419U 88074A 26185.29360708 .00000075 00000-0 11336-3 0 9997
2 19419 90.0397 21.0280 0097031 26.6759 145.9012 13.42660889853715
Source: Celestrak
Summary
The OSCAR 25 satellite, also known as NNS 30250-25, is a Transit-Bus type spacecraft designed for navigation purposes and launched on August 25, 1988, from AFWTR SLC5 using a Scout G-1 launch vehicle. It was manufactured by GEEW and owned by NAVAIR with a payload named NNS O-25. The satellite is gravity stabilized, measures 0.3 meters in length and 0.5 meters in diameter, with a span of 30 meters. Its dry mass and launch mass are both 66 kilograms. OSCAR 25 uses four deployable fixed solar arrays and batteries for power supply. It has an RCS value of 1.3129 and is shaped as an octagonal cylinder with four panels and antennas attached.
Physical Characteristics
Length
0.3
Diameter
0.5
Span
30
Dry Mass
66
Launch Mass
66
Shape
Oct Cyl + 4 Pan + Ant
Radar Cross Section
1.3129
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
NNS O-25
Purpose
Navigation
Mission
Navigation
Manufacturer
GEEW
Life Expectancy
Unknown
Bus
Transit 5
Configuration
Transit-Bus, Gravity Stabilized
Motor
?
Equipment
?
Power System
4 deployable fixed 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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