Space Brief 27 Mar 2025
Today's highlights include the certification of ULA's Vulcan rocket for national security missions, developments in nuclear timekeeping for GPS systems, and updates on the Space Force's new warfighting framework.
Launch Date
September 29, 1971
Launch Site
Launch Pad
LC17A
Launch Vehicle
Thor Delta N
NORAD ID
05492
International Designator
1971-083B
Decay Date
9/19/1978
Name
TETR 4
Alternative Name
TETR 3
Type
Status
Owner
GSFC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
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
0.3
Diameter
0.3
Span
1
Dry Mass
18
Launch Mass
18
Shape
Oct Cyl + 2 Ant
Radar Cross Section
0.3029
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
ERS 33
Purpose
Unknown
Mission
Unknown
Manufacturer
TRW
Life Expectancy
Unknown
Bus
ORS
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Learn more about satellites and other related topics.
Today's highlights include the certification of ULA's Vulcan rocket for national security missions, developments in nuclear timekeeping for GPS systems, and updates on the Space Force's new warfighting framework.
Fifty-nine years ago, a revolutionary new rocket thundered skyward from Cape Kennedy, testing the spacecraft that would eventually carry astronauts to the lunar surface
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Space Force suspends all Vulcan launches pending solid rocket booster investigation. Rocket Lab scrubs HASTE hypersonic vehicle launch. Military space funding hits record highs.
On January 20, 1972, the second KH-9 HEXAGON lifted off from Vandenberg - carrying the most sophisticated reconnaissance system ever built by engineers who weren't allowed to say 'film,' 'camera,' or even talk to each other about what they were doing.
Key topics today include the US Space Force's new international strategy, China's partnership with Pakistan for astronaut training, and conservation concerns over SpaceX landing proposals.
Northrop Grumman takes $71M charge over Vulcan solid rocket booster anomaly, grounding ULA's vehicle. Vulcan manifest timelines now in holding pattern pending resolution.
Firefly Aerospace launches return-to-flight Firefly Alpha on March 10 after Flight 6 anomaly. SpaceX also launches EchoStar 25 GEO satellite and multiple Starlink batches this week.