X Report 9 Nov 2025
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OPS 8781 (10502)
COSPAR: 1977-112A | Alt Name: OPS 8781
Image
Additional Sources
Launch Details
Launch Date
December 8, 1977
Launch Site
AFWTR
Launch Pad
SLC3W
Launch Vehicle
Atlas F/MSD
Orbital Elements
NORAD ID
10502
International Designator
1977-112A
Epoch
Sat, 04 Jul 2026 01:04:23 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
63.33°
Right Ascension
51.86°
Eccentricity
Calculating...
Argument of Perigee
162.79°
Period
102.31 min
Mean Motion
14.07 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
OPS 8781
Alternative Name
OPS 8781
Type
Payload
Status
Unknown
Owner
NRO/NRL
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 10502U 77112A 26185.04472039 .00000619 00000-0 16713-3 0 9994
2 10502 63.3311 51.8643 0465227 162.7853 198.9604 14.07420990110445
Source: Celestrak
Summary
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Physical Characteristics
Length
1.6
Diameter
1.5
Span
2.7
Dry Mass
559
Launch Mass
559
Shape
Box + Ant
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
PARCAE 2
Purpose
Ocean Surveillance Launch Dispenser
Mission
Ocean Surveillance Launch Dispenser
Manufacturer
Naval Research Laboratory
Life Expectancy
Unknown
Bus
NOSS MSD
Configuration
?
Motor
FW-4D ?
Equipment
?
Power System
Unknown
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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