Space Brief 22 Nov 2025
Today's brief covers Blue Origin's national security mission, a new missile interceptor project by Space Force, developments with Starship boosters, and more.
SL-4 R/B (44799)
COSPAR: 2019-079C | Alt Name: Soyuz-2-1v (N006) Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
November 25, 2019
Launch Site
PLMSC
Launch Pad
LC43/4
Launch Vehicle
Soyuz-2-1V
Orbital Elements
NORAD ID
44799
International Designator
2019-079C
Decay Date
7/18/2020
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Soyuz-2-1v (N006) Blok-I
Type
Rocket Body
Status
Space Junk
Owner
RVSNR
Country
Russia
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
Blok-I 14S54/RD-0110
Purpose
Unknown
Mission
Unknown
Manufacturer
PROGT
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.
Pentagon Raises Golden Dome to $185B for Space Defense Layer | KeepTrack Space Brief
Pentagon increases Golden Dome missile defense budget by $10B to $185B, funding HBTSS hypersonic tracking constellation expansion. Three acceleration priorities announced.
Starlink Hits 10,000 Satellites in Orbit, X Report 17 Mar 2026
How many Starlink satellites are in orbit in 2026? SpaceX passed 10,000 after the Starlink 17-24 launch, with 10,020 in orbit and 11,529 launched.
The Day the Navy's Eyes Reached Orbit
Forty-two years ago, an Atlas H rocket climbed into the California sky carrying four objects that would help the U.S. Navy track every Soviet warship on the planet - a mission so secret that even the satellites' true name wasn't declassified until 2023
Starlink Satellite Count Hits 10,191, X Report 14 Apr 2026
Starlink satellite count April 2026: 10,191 working of 10,209 in orbit. SpaceX flew its 1,000th Starlink of 2026 on April 14, adding 29 more sats.
DAF Space Restructure Announced Within Days, PAE Leaders Named | KeepTrack Space Brief
Department of Air Force announces finalized Program Acquisition Executive structure within days, reshaping oversight of GPS, SBIRS, and Protected Tactical Satcom systems.
X Report 25 Sep 2025
SpaceX continues to make strides with multiple launches, including 28 Starlink satellites and NASA's IMAP mission, highlighting its ongoing role in advancing space weather research.
Space Brief 31 May 2025
Today's brief covers a significant GPS satellite launch by SpaceX, China's classified satellite mission, and Rocket Lab's strategic steps in the defense sector.