X Report 8 Oct 2025
SpaceX successfully launched 28 Starlink satellites aboard a Falcon 9 rocket, marking significant advancements in their deployment and operational capabilities.
SL-4 R/B (19264)
COSPAR: 1988-055B | Alt Name: Soyuz-U 15-366 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
June 23, 1988
Launch Site
PLMSC
Launch Pad
LC41/1
Launch Vehicle
Soyuz-U
Orbital Elements
NORAD ID
19264
International Designator
1988-055B
Decay Date
6/25/1988
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Soyuz-U 15-366 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.
SpaceX Eyes $1.75T Valuation in $75B IPO | KeepTrack X Report
SpaceX targets a $75B IPO valuing the company at $1.75T, as 50+ new Starlink satellites reach orbit via dual coast launches.
X Report 28 Oct 2025
SpaceX successfully launched 28 Starlink satellites and settled a lawsuit, while Starlink's performance faces scrutiny in Ukraine. Additionally, MTN is enhancing Starlink's business services.
SpaceX Starfall Reentry Vehicle Plans Revealed by FAA | KeepTrack X Report
FAA documents expose SpaceX's Starfall reentry vehicle program, targeting in-space manufacturing support as the Starlink constellation holds 10,397 working satellites.
SpaceX and xAI Tapped for Pentagon's $100M Drone Contest | KeepTrack X Report
Pentagon selects SpaceX and xAI for $100M autonomous drone competition. Two Falcon 9 rockets launch Starlink sats from California and Florida. 11,215 total Starlink satellites launched.
Space Brief 22 Feb 2025
Today's brief covers a reveal from the US Space Force of the X-37B space plane in orbit, a developing defense shakeup involving key military leaders, confirmation of advanced federated ICAM connections by the DoD, and SAAB's plan for a Euro defense coalition. Plus, we spotlight the BDSAT-2 CubeSat.
Space Brief 27 Feb 2025
Today's highlights include Rocket Lab's progress on the Space Force's VICTUS HAZE mission, BlackSky's new government contract, and AEI's policy recommendations for Space Force restructuring.
ESA Buys Dedicated Crew Dragon Mission for 4 Astronauts | KeepTrack X Report
ESA is purchasing a dedicated SpaceX Crew Dragon flight to send 4 European astronauts to the ISS ahead of the station's planned retirement.