Space Brief 9 Jan 2025
Today's briefing includes new appointments in U.S. military and defense sectors, X-37B's continued mission, and international policy shifts affecting satellite technology sales.
SL-4 R/B (14702)
COSPAR: 1984-014B | Alt Name: Soyuz-U No. 357 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
February 8, 1984
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-U
Orbital Elements
NORAD ID
14702
International Designator
1984-014B
Decay Date
2/10/1984
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Soyuz-U No. 357 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 20 Aug 2025
SpaceX makes significant strides with Starship Flight Test 10 approved and updates on the new Starbase pad design.
SpaceX Wins $4.16B Space Force Contract, X Report 3 Jun 2026
SpaceX wins a $4.16 billion Space Force satellite contract to track airborne threats worldwide, while dual-pad launches add 53 Starlink satellites.
NROL-179 Starshield Satellites Launch from Vandenberg | KeepTrack X Report
SpaceX launched NROL-179 from Vandenberg at 1:50 a.m. PDT June 19, carrying Starshield spy satellites for the National Reconnaissance Office.
Two-Line Element Set (TLE)
The compact data format that describes every tracked satellite orbit in just two lines of text, and how to read it
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.
Iran Strikes UAE and Saudi Targets, Space Force Opens Tracking to Commercial Firms | KeepTrack Space Brief
Iran launches drones and missiles at UAE and Saudi targets. Space Force opens secretive tracking data to commercial firms. Falcon 9 breakup linked to lithium pollution in upper atmosphere.
X Report 3 Aug 2025
SpaceX bids farewell to LZ-1 while continuing its mission towards advancements in satellite technology and the ongoing Starlink project.