X Report 1 Apr 2025
SpaceX launches its first crewed mission over Earth's poles and FAA concludes investigation into the Starship Flight 7 incident.
SL-12 R/B(AUX MOTOR) (18635)
COSPAR: 1987-100E | Alt Name: DM2-30L SOZ-1
DECAYED
Image
Additional Sources
Launch Details
Launch Date
December 10, 1987
Launch Site
Launch Pad
LC200/40
Launch Vehicle
Proton-K/DM-2
Orbital Elements
NORAD ID
18635
International Designator
1987-100E
Decay Date
5/7/1991
Basic Satellite Info
Name
SL-12 R/B(AUX MOTOR)
Alternative Name
DM2-30L 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
1.1
Diameter
0.5
Span
1.1
Dry Mass
60
Launch Mass
120
Shape
Cyl
Radar Cross Section
1.12
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
SOZ
Purpose
Unknown
Mission
Unknown
Manufacturer
NPOE
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.
The Civilian Space Traffic System America Almost Didn't Build
For nearly two decades, the U.S. Air Force and Space Force have been the world's unofficial civilian space traffic control system. The Department of Commerce's Traffic Coordination System for Space (TraCSS) is now taking over that job for commercial satellite operators - in stages, against persistent congressional pressure to kill the program, and with Department of Defense advocates pushing to make it happen before it is too late.
Space Force Stands Up SPACEFOR-NORTH for Homeland Defense | KeepTrack Space Brief
Space Force inaugurates SPACEFOR-NORTH at Peterson SFB for homeland defense. Viridian inks AFRL satellite agreement. HASC chair seeks $450B defense fund.
Falcon 9 Lands in Bahamas for 2nd Time, Reentry Pollution Measured | KeepTrack X Report
SpaceX lands Falcon 9 in The Bahamas for the second time ever during Starlink 10-34 mission. Scientists measure rocket reentry air pollution in real-time for the first time.
X Report 29 Jun 2025
SpaceX secures a significant military contract while successfully launching multiple batches of Starlink satellites. Furthermore, milestones aboard the ISS highlight ongoing space missions.
X Report 26 Jul 2025
This week's SpaceX developments include notable upcoming missions, with a Starlink launch on the horizon and Crew Dragon's readiness for the next astronaut mission.
The Day That Humans Discovered Rocket Fuel
On February 2, 1909, Robert Goddard made a revolutionary breakthrough in his notebook: liquid oxygen and liquid hydrogen could achieve 50% efficiency in converting heat energy to kinetic energy for rocket propulsion
Space Brief 20 Aug 2024
Polaris Dawn's upcoming commercial spacewalk, successful lunar orbit by Chinese spacecraft, and more space news including SpaceX's Starlink mission, RFA's static-fire failure, and advances in satellite technology.