X Report 5 Dec 2024
SpaceX achieves new milestones with Starlink launches, and Elon Musk's influence is a point of discussion. Telesat makes strides amid Starlink's growing dominance.
SL-4 R/B (16052)
COSPAR: 1985-081B | Alt Name: Soyuz-U2 No. 007 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
September 17, 1985
Launch Site
Launch Pad
LC1
Launch Vehicle
Soyuz-U2
Orbital Elements
NORAD ID
16052
International Designator
1985-081B
Decay Date
9/20/1985
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Soyuz-U2 No. 007 Blok-I
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
6.7
Diameter
2.7
Span
6.7
Dry Mass
2350
Launch Mass
2350
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
11S510
Purpose
Unknown
Mission
Unknown
Manufacturer
PROG
Life Expectancy
Unknown
Bus
Blok-I
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 Aug 2025
SpaceX makes headlines with dual Starlink launches, Rocket Lab inaugurates new launch complex, while AI's impact on space missions and satellite technology continues to stir discussions.
Space Brief 13 Dec 2024
Today's brief highlights the U.S. Space Force's upcoming modular satellite mission, increased military reliance on commercial space intelligence, and the demand for expanded commercial reserve support. Learn more about these advancements alongside our Satellite Spotlight on Yaogan-30 B.
SpaceX Wins $2.29B Space Force LEO Comms Contract | KeepTrack Space Brief
SpaceX awarded $2.29 billion to build Space Force's LEO communications backbone, integrating with SDA Transport layer satellites for military tactical data relay through space.
Space Brief 2 Mar 2025
Today's brief highlights the successful landing of a private moon mission by Firefly Aerospace, a new simulator for the Spanish Air and Space Force, and the anticipated launch by Europe's Ariane 6. Plus, our Satellite Spotlight features the COSMOS 2484.
X Report 12 Jul 2025
SpaceX prepares for the Crew-11 astronaut mission launch, while Starlink continues to expand its satellite network in orbit.
X Report 2 Apr 2025
SpaceX's Fram2 mission marks a historic first in polar orbit travel, while DARPA unexpectedly detects Falcon 9 reentry using atmospheric listening.
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.