X Report 18 Nov 2025
SpaceX successfully launched the Sentinel-6B satellite to monitor global sea levels while resuming daytime rocket launches. Furthermore, delays in the Starship timeline impact NASA's Artemis 3 mission schedule.
H-1 R/B(2) (20773)
COSPAR: 1990-077C | Alt Name: H-I-22F Stage 3
DECAYED
Image
Additional Sources
Launch Details
Launch Date
August 28, 1990
Launch Site
TANSC
Launch Pad
N
Launch Vehicle
H-1
Orbital Elements
NORAD ID
20773
International Designator
1990-077C
Decay Date
3/15/1991
Basic Satellite Info
Name
H-1 R/B(2)
Alternative Name
H-I-22F Stage 3
Type
Rocket Body
Status
Space Junk
Owner
NASDA
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
2.3
Diameter
1.3
Span
2.3
Dry Mass
168
Launch Mass
2118
Shape
Sphere + Cone
Radar Cross Section
2.986
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
UM129A
Purpose
Unknown
Mission
Unknown
Manufacturer
NISS
Life Expectancy
Unknown
Bus
UM-129A
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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