X Report 25 Dec 2025
Starlink reaches 9 million active users, while SpaceX prepares for upcoming missions with Flight 12 vehicles readying for 2026.
SL-12 R/B (06769)
COSPAR: 1973-052B | Alt Name: D-1901L SOZ-1
DECAYED
Image
Additional Sources
Launch Details
Launch Date
August 5, 1973
Launch Site
Launch Pad
LC81/23
Launch Vehicle
Proton-K/D
Orbital Elements
NORAD ID
06769
International Designator
1973-052B
Decay Date
8/7/1973
Explore in the Catalog
Basic Satellite Info
Name
SL-12 R/B
Alternative Name
D-1901L SOZ-1
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
1
Diameter
0.6
Span
1
Dry Mass
56
Launch Mass
110
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
SOZ
Purpose
Unknown
Mission
Unknown
Manufacturer
TSKBEM
Life Expectancy
Unknown
Bus
SOZ
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Space Brief 31 Dec 2024
Today's Space Brief highlights the latest developments in China's megaconstellation funding, Russia's nuclear posturing in Europe, and other significant military activities.
US Military Likely Jamming Iran Satellite Comms | KeepTrack Space Brief
US military praised for space operations against Iran assessed as jamming or spoofing satellite communications. Electronic warfare effects invisible to orbital tracking data.
X Report 7 Jun 2025
SpaceX successfully launched the SXM-10 satellite for SiriusXM and prepares for the Ax-4 mission to the ISS amid political tensions involving Elon Musk and President Trump.
Space Brief 30 Apr 2025
Today's briefing covers a significant hypersonic missile launch by the U.S. Army, the declassification of spy satellite photos aiding demining efforts, and the deployment of cutting-edge research payloads to the ISS.
SpaceX IPO Surges 20%; China Debuts Tallest Rocket | KeepTrack Space Brief
SpaceX shares jump 20% on first trading day after historic IPO. China launches tallest rocket while LandSpace preps second landing attempt. Tracking data.
X Report 9 Nov 2025
SpaceX successfully launched 29 new Starlink satellites today, further expanding its satellite internet constellation amidst growing competition in the space broadband market.
X Report 2 Nov 2025
SpaceX successfully completed its 100th Starlink mission of the year and launched the 'Haven Demo' private space station along with 17 other satellites. The company also made strides in lunar lander development for Artemis III.