X Report 26 Apr 2025
SpaceX launches 28 Starlink satellites and discusses upcoming business strategies, while T-Mobile slashes Starlink cellular prices.
M-4S R/B (05498)
COSPAR: 1971-080B | Alt Name: M-4S-3 Stage 4
Image
Additional Sources
Launch Details
Launch Date
September 28, 1971
Launch Site
KSCUT
Launch Pad
M
Launch Vehicle
Mu-4S
Orbital Elements
NORAD ID
05498
International Designator
1971-080B
Epoch
Sat, 04 Jul 2026 01:25:23 GMT
Apogee
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Perigee
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Inclination
32.03°
Right Ascension
56.39°
Eccentricity
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Argument of Perigee
237.17°
Period
111.76 min
Mean Motion
12.89 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-4S R/B
Alternative Name
M-4S-3 Stage 4
Type
Rocket Body
Status
Space Junk
Owner
ISAS
Country
Japan
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 05498U 71080B 26185.05930130 .00000047 00000-0 24637-4 0 9992
2 05498 32.0330 56.3874 0574072 237.1657 117.2398 12.88512156579548
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
2.7
Diameter
1.5
Span
2.7
Dry Mass
310
Launch Mass
310
Shape
Sphere + Cone
Radar Cross Section
0.8094
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
M-40
Purpose
Unknown
Mission
Unknown
Manufacturer
NISS
Life Expectancy
Unknown
Bus
M-40
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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