X Report 22 Nov 2025
Major challenges emerged with SpaceX's next-generation Starship booster testing, while Starlink deployments continued with successful launches.
SL-4 R/B (07901)
COSPAR: 1975-048B | Alt Name: Voskhod 29-756 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
June 3, 1975
Launch Site
PLMSC
Launch Pad
LC43/3
Launch Vehicle
Voskhod 11A57
Orbital Elements
NORAD ID
07901
International Designator
1975-048B
Decay Date
6/11/1975
Explore in the Catalog
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Voskhod 29-756 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
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