M-4S R/B (05126)

COSPAR: 1971-011B | Alt Name: M-4S-2 Stage 4

Image

Additional Sources

Launch Details

Launch Date

February 16, 1971

Launch Site

KSCUT

Launch Pad

Launch Vehicle

Mu-4S

Orbital Elements

NORAD ID

05126

International Designator

1971-011B

Epoch

Sun, 19 Jul 2026 11:32:56 GMT

Apogee

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Perigee

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Inclination

29.68°

Right Ascension

357.73°

Eccentricity

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Argument of Perigee

324.99°

Period

104.63 min

Mean Motion

13.76 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

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M-40 bus JAXA Japan satellites Rocket Bodies

Basic Satellite Info

Name

M-4S R/B

Alternative Name

M-4S-2 Stage 4

Type

Rocket Body

Status

Space Junk

Owner

ISAS

Country

Japan

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 05126U 71011B   26200.48120551  .00000089  00000+0  20434-4 0  9993

2 05126  29.6837 357.7314 0012424 324.9920  34.9840 13.76308387788178

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

0.872

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

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