X Report 17 Dec 2025
SpaceX prepares for a busy launch schedule with key upgrades at Starbase and notable Starlink missions. Recent close approaches in orbit underscore the complexities of satellite operations.
EPSILON R/B (43936)
COSPAR: 2019-003E | Alt Name: Epsilon 4 PBS
DECAYED
Image
Additional Sources
Launch Details
Launch Date
January 18, 2019
Launch Site
KSCUT
Launch Pad
EP
Launch Vehicle
Epsilon
Orbital Elements
NORAD ID
43936
International Designator
2019-003E
Decay Date
11/11/2024
Basic Satellite Info
Name
EPSILON R/B
Alternative Name
Epsilon 4 PBS
Type
Rocket Body
Status
Space Junk
Owner
ISASJ
Country
Japan
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
1.2
Diameter
1.5
Span
1.5
Dry Mass
185
Launch Mass
280
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Post-Boost Stage
Purpose
Unknown
Mission
Unknown
Manufacturer
JAXA
Life Expectancy
Unknown
Bus
EPBS
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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