Space Brief 9 Jul 2025
Today's brief covers the U.S. Space Force's new international strategy, Northrop Grumman's Golden Dome project, and ULA's Vulcan launches, alongside military budget priorities.
SL-4 R/B (13451)
COSPAR: 1982-086B | Alt Name: Soyuz-U 17-944 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
September 1, 1982
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Soyuz-U
Orbital Elements
NORAD ID
13451
International Designator
1982-086B
Decay Date
9/10/1982
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Soyuz-U 17-944 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.
Starship Flight 13 to Debut First Starlink V3 Satellites | KeepTrack X Report
SpaceX readies Starship Flight 13 for July 16 launch to deploy first Starlink V3 satellites as Falcon 9 logs its 600th booster reuse.
X Report 7 Sep 2025
SpaceX launches 24 Starlink satellites, pushing its 2025 total beyond 2,000, while facing community pushback in Florida for its Starship operations.
X Report 17 Nov 2025
SpaceX successfully launched the Sentinel-6B satellite, marking a significant milestone as its 500th mission with a reused rocket, furthering global sea level monitoring efforts.
Falcon 9 Resumes Flights, Starbase Approved to Double in Size | KeepTrack X Report
Falcon 9 resumes flights with 25 Starlink satellites from Vandenberg. SpaceX test-fires rocket ahead of Crew-12 launch. Starbase approved to nearly double its launch site footprint.
Space Brief 1 Aug 2025
Today's Space Brief covers a crucial weather data decision by the U.S. Defense Department, an innovative power supply for aerospace systems, advancements in satellite link technology, and Norway's maritime surveillance. AI/ML tools for airspace management and concerns about defense testing capabilities are also highlighted.
X Report 8 Mar 2025
SpaceX faces setbacks with Starship Flight 8 amid debris fallout, achieves regulatory win for smartphone connectivity, and prepares for upcoming ISS missions.
X Report 18 Dec 2025
SpaceX carried out a double-header Starlink launch from both coasts while milestones from Max Space and Lux Aeterna signal growth in the commercial space sector.