Space Brief 10 Nov 2025
Today's brief covers China's record-breaking launch year, SpaceX's continued Starlink deployments, Blue Origin's launch challenges, and innovations in satellite maneuverability.
OPS 0757 (TACSAT) (03691)
COSPAR: 1969-013A | Alt Name: OPS 0757
Image
Additional Sources
Launch Details
Launch Date
February 9, 1969
Launch Site
Launch Pad
LC41
Launch Vehicle
Titan IIIC
Orbital Elements
NORAD ID
03691
International Designator
1969-013A
Epoch
Sun, 19 Jul 2026 20:36:07 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
2.93°
Right Ascension
74.20°
Eccentricity
Calculating...
Argument of Perigee
174.31°
Period
1434.09 min
Mean Motion
1.00 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Explore in the Catalog
Basic Satellite Info
Name
OPS 0757 (TACSAT)
Alternative Name
OPS 0757
Type
Payload
Status
Non-operational
Owner
SAMSO
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 03691U 69013A 26200.85841506 .00000094 00000+0 00000+0 0 9996
2 03691 2.9289 74.1972 0019863 174.3135 10.0162 01.00412189114431
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
7.6
Diameter
2.8
Span
7.6
Dry Mass
650
Launch Mass
721
Shape
Cyl
Radar Cross Section
1
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Tacsat
Purpose
Communication
Mission
Communication
Manufacturer
HSES
Life Expectancy
Unknown
Bus
HS-308
Configuration
HS-308
Motor
?
Equipment
2 hard-limiting repeaters (UHF and SHF)
Power System
Solar cells (body mounted), batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Space Brief 19 Dec 2025
Today's brief highlights significant developments in space defense, innovation fund challenges, and international defense agreements impacting satellite utilities.
Space Brief 23 Aug 2024
Sentinel-2C sealed in Vega rocket fairing, ULA sale tidbit, Polaris Dawn mission updates, Norway's Andøya Spaceport ready for action, Harris commits to space leadership, NASA's latest smallsat launch partners, new members join NASA composite initiative, Mynaric's manufacturing hiccups, Rocket Factory Augsburg's turbopump snag, and Amazon boosts satellite deployment infrastructure.
Space Brief 26 Apr 2025
Today's brief covers major developments including the introduction of BAHA drones, increased defense spending by Estonia, and consequential announcements on military budgets impacting space-related activities.
Starlink Launch Cadence: 54 Sats in One Day, X Report 13 Mar 2026
SpaceX Starlink launch cadence 2026: missions 26 and 27 lift off 37 minutes apart on March 13, with 25 and 29 satellites per Falcon 9, 54 in one morning.
Reentry
What happens when space objects come home: the fiery physics of returning from orbit and why predicting where debris lands is so difficult
Space Brief 20 Mar 2025
Today's brief highlights critical discussions in military space readiness, potential satellite 'dogfighting' scenarios, international defense collaborations, and a notable communications satellite launch.
Space Brief 9 Oct 2025
Today's briefing covers key developments in defense budgets reshaping the space sector, significant Space Force contracts, and the latest news from the Chinese space station.