X Report 4 Oct 2025
SpaceX continues to push forward with significant milestones, including the launch of additional Starlink satellites and progress on spectrum acquisitions.
SL-6 R/B(1) (09050)
COSPAR: 1976-074B | Alt Name: Molniya-M 29-556 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
July 23, 1976
Launch Site
Launch Pad
LC1
Launch Vehicle
Molniya 8K78M
Orbital Elements
NORAD ID
09050
International Designator
1976-074B
Decay Date
10/2/1976
Basic Satellite Info
Name
SL-6 R/B(1)
Alternative Name
Molniya-M 29-556 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.
X Report 15 Jan 2025
SpaceX successfully launches two lunar landers and clears another milestone with Transporter-12 rideshare mission.
Six Missions Worth Watching After Artemis II
Artemis II grabbed the headlines, but six other missions are quietly approaching milestones that could reshape what we know about Mercury, Mars, asteroids, exoplanets, and the Moon's south pole. Here is what is actually happening with each of them.
SpaceX Eyes Confidential IPO at $1.75T Valuation, Launches 54 Starlinks in One Day | KeepTrack X Report
SpaceX reportedly eyes a confidential March IPO filing that could value the company at $1.75 trillion. Dual Falcon 9 launches deploy 54 Starlink satellites, pushing total on-orbit past 9,900.
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.
Vulcan Set to Open 2026 With USSF-87 National Security Launch | KeepTrack Space Brief
ULA's Vulcan rocket preps for USSF-87 national security launch to open 2026. Sierra Space delivers SDA Tranche 2 satellites three months early. NASA delays spacewalk for Crew-11 medical issue.
Space Brief 22 Aug 2025
SpaceX's X-37B spaceplane launch, featuring advanced tech, highlights today’s space events. The launch of the first reprogrammable navigation satellite by the US Space Force is another significant milestone.
X Report 19 Mar 2025
SpaceX safely returns Crew-9 from ISS, launches new Starlink satellites, and showcases its satellite kit production capabilities.