Space Brief 10 Dec 2025
Today's brief covers China's intense launch schedule, a new Arctic military constellation, Muon Space's defense innovations, and SpaceX's classified NROL-77 mission.
Launch Date
December 11, 1978
Launch Site
AFWTR
Launch Pad
SLC3E
Launch Vehicle
Atlas F/SVS
NORAD ID
11141
International Designator
1978-112A
Epoch
Tue, 09 Jun 2026 13:11:22 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
63.70°
Right Ascension
72.34°
Eccentricity
Calculating...
Argument of Perigee
50.57°
Period
746.52 min
Mean Motion
1.93 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Name
NAVSTAR 4 (OPS 5114)
Alternative Name
Navstar 4
Type
Status
Owner
SAMSO
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 11141U 78112A 26160.54956741 -.00000027 00000-0 00000-0 0 9993
2 11141 63.7009 72.3370 0145347 50.5680 134.7930 1.92895478228940
Source: Celestrak
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.
Length
2.4
Diameter
2.6
Span
5.3
Dry Mass
409
Launch Mass
409
Shape
Box + 2 Pan
Radar Cross Section
0.4658
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Navstar GPS SVN 4
Purpose
Navigation
Mission
Navigation
Manufacturer
RWISB
Life Expectancy
5 years
Bus
GPS
Configuration
3-Axis stabilized
Motor
Star 27
Equipment
?
Power System
2 deployable solar arrays, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
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