X Report 11 Nov 2025
SpaceX continues to dominate the space launch market with a new Starlink mission, breaking Florida's annual launch record. The latest batch of satellites enhances global broadband coverage.
SL-4 R/B (06685)
COSPAR: 1973-038B | Alt Name: Voskhod 23-251 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
June 10, 1973
Launch Site
Launch Pad
LC1
Launch Vehicle
Voskhod 11A57
Orbital Elements
NORAD ID
06685
International Designator
1973-038B
Decay Date
6/16/1973
Explore in the Catalog
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Voskhod 23-251 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
11A57I
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 12 Targets Mid-May Launch, X Report 2 May 2026
Starship Flight 12 status for May 2026: SpaceX targets mid-May with a revised trajectory, while Starlink 10-38 lofts 29 satellites from Cape Canaveral.
Space Brief 15 Feb 2025
Today's highlights include SpaceX's record-setting Starlink launch, Redwire's contract for USSF, and military satellite developments.
X Report 3 Jun 2025
SpaceX gears up for an exciting week with multiple launches, including a crewed mission and the rescheduled Starlink delivery. Meanwhile, ULA faces criticism from the Space Force over delays in its Vulcan rocket program.
Space Brief 10 Nov 2024
Long March 2C launches four PIESAT-2 radar satellites, Gilmour Space secures Australia's first orbital launch permit, NASA extends ISS cargo contracts through 2030, ESA and Arianespace face industry crossroads.
Space Brief 5 Dec 2025
Focusing on military satellite initiatives, defense strategies, and advancements in air and cyber capabilities
X Report 3 Feb 2025
SpaceX prepares for another Starlink launch from Florida, while recent Starship incident raises environmental concerns.
The End of Free Skies | FAA Starts Charging for Rocket Launches
On April 22, 2026, the FAA published a final rule implementing per-launch user fees for commercial space transportation — the first time the U.S. government has charged payload-based fees for rocket launches. Starting at 25 cents per pound with a $30,000 cap, the fees are modest today. By 2033, they won't be.