Understanding Earth's Orbits and Their Applications
Explore the dynamic realms of Earth's orbits, from LEO to GEO, unraveling the crucial roles they play in global communication, navigation, and surveillance.
SL-4 R/B (05559)
COSPAR: 1971-088B | Alt Name: Voskhod (N168) Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
October 14, 1971
Launch Site
Launch Pad
LC31
Launch Vehicle
Voskhod 11A57
Orbital Elements
NORAD ID
05559
International Designator
1971-088B
Decay Date
10/18/1971
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Voskhod (N168) 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.
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.
Starship All 6 Engines Fire for 60 Seconds Before Flight 13 | KeepTrack X Report
SpaceX ignited all 6 Starship engines for a full minute at Starbase, while a Falcon 9 added 24 more Starlinks from Vandenberg on July 1.
Space Brief 29 Nov 2024
Today's brief covers China's Beidou satellite plans, SpaceX's Starship advancements, potential Space Command HQ relocation, and more.
Space Brief 4 Nov 2024
China's Tiangong space station completes crew rotation, Rocket Lab prepares for confidential launch, and Japan successfully launches military satellite with its H3 rocket.
Falcon 9 Grounded After Upper Stage Anomaly, Crew-12 at Risk | KeepTrack X Report
SpaceX pauses all Falcon 9 launches after upper stage anomaly during Starlink mission. Crew-12 astronaut launch may be affected. Booster 19 rolls out for cryogenic testing.
X Report 14 May 2025
SpaceX conducted significant test firings and further expanded its satellite fleet, while the EU scrutinizes Starlink's market impact amid ongoing space industry negotiations.
X Report 29 Jul 2025
Today’s brief highlights developments including the Crew-11 launch preparations and the impact of Starlink satellites on radio telescope observations.