Space Brief 4 Oct 2025
Today's Space Brief highlights major developments in satellite launches, regulatory milestones for spectrum sales, and the evolving landscape of space-related cyber conflicts.
M-3S2 R/B(2) (15969)
COSPAR: 1985-073C | Alt Name: KM-P
DECAYED
Image
Additional Sources
Launch Details
Launch Date
August 18, 1985
Launch Site
KSCUT
Launch Pad
M1
Launch Vehicle
Mu-3S-II
Orbital Elements
NORAD ID
15969
International Designator
1985-073C
Decay Date
Unknown
Basic Satellite Info
Name
M-3S2 R/B(2)
Alternative Name
KM-P
Type
Rocket Body
Status
Space Junk
Owner
ISASM
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
0.8
Span
1.2
Dry Mass
41
Launch Mass
461
Shape
Sphere + Cone
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
KM-P
Purpose
Unknown
Mission
Unknown
Manufacturer
NISS
Life Expectancy
Unknown
Bus
KM
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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