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M-3H R/B (11028)
COSPAR: 1978-087B | Alt Name: KM-B
Image
Additional Sources
Launch Details
Launch Date
September 16, 1978
Launch Site
KSCUT
Launch Pad
M
Launch Vehicle
Mu-3H
Orbital Elements
NORAD ID
11028
International Designator
1978-087B
Epoch
Fri, 03 Jul 2026 14:47:06 GMT
Apogee
Calculating...
Perigee
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Inclination
31.26°
Right Ascension
333.15°
Eccentricity
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Argument of Perigee
350.68°
Period
192.32 min
Mean Motion
7.49 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
M-3H R/B
Alternative Name
KM-B
Type
Rocket Body
Status
Space Junk
Owner
ISAS
Country
Japan
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 11028U 78087B 26184.61604421 .00024938 00000-0 92199-3 0 9996
2 11028 31.2589 333.1537 3997087 350.6778 3.6919 7.48743958727195
Source: Celestrak
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
0.9
Diameter
0.7
Span
0.9
Dry Mass
49
Launch Mass
284
Shape
Sphere + Cone
Radar Cross Section
0.7042
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
KM-B
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
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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