SL-4 R/B (06327)

COSPAR: 1972-105B | Alt Name: Soyuz-M No. 003 Blok-I
DECAYED

Image
SL-4 R/B Satellite Image
Additional Sources
Launch Details

Launch Date

December 27, 1972

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Soyuz 11A511M

Orbital Elements

NORAD ID

06327

International Designator

1972-105B

Decay Date

1/12/1973

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-M No. 003 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

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

6.7

Diameter

2.7

Span

6.7

Dry Mass

2350

Launch Mass

2350

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S510

Purpose

Unknown

Mission

Unknown

Manufacturer

PROG

Life Expectancy

Unknown

Bus

Blok-I

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

Artemis 2 Crew First Lunar-Bound Humans Since 1972 | KeepTrack Space Brief

Artemis 2 Crew First Lunar-Bound Humans Since 1972 | KeepTrack Space Brief

Artemis 2 Orion carries first humans toward the Moon in 53 years. Spacecraft in good health after trans-lunar injection; lunar flyby observation plan due April 6.

Understanding Space Debris

Understanding Space Debris

From shattered satellites to exploded rocket stages, space debris poses a growing risk to satellites, space stations, and astronauts. Here's a deep dive into what causes space debris, notable generating events, and what we're doing about it.

Space Brief 30 Aug 2024

Space Brief 30 Aug 2024

Today's highlights include General Dynamics' contract extension with SDA, ABL Space Systems layoffs, NASA's Crew-9 mission adjustments, and Galactic Energy's successful satellite launch.

Space Force Eyes Asteroid Mining, Clashes With Congress on R-GPS | KeepTrack Space Brief

Space Force Eyes Asteroid Mining, Clashes With Congress on R-GPS | KeepTrack Space Brief

Space Force sees strategic value in asteroid mining. Congress pushes back on R-GPS phase-out over jamming risks. BlackSky expands Gen 3 defense contracts.

X Report 2 Feb 2025

X Report 2 Feb 2025

SpaceX successfully launched 43 Starlink satellites across two missions, marking significant achievements at Cape Canaveral and Vandenberg Space Force Bases.

SpaceX Preps Seventh Starlink Launch of 2026 With 25 Satellites | KeepTrack X Report

SpaceX Preps Seventh Starlink Launch of 2026 With 25 Satellites | KeepTrack X Report

SpaceX readies Starlink 17-20 launch of 25 satellites to polar orbit from Vandenberg pad 4E — seventh Starlink mission of the year. 11,009 total Starlink satellites launched to date.

Space Brief 21 Jul 2025

Space Brief 21 Jul 2025

Today's brief covers SpaceX's latest Starlink launch, fascinating exoplanet discoveries, and strategic lunar developments by China and South Korea.

The Day That Changed How We Navigate Forever

The Day That Changed How We Navigate Forever

Forty-seven years ago, an Atlas rocket carried the first GPS satellite into orbit, launching a revolution in navigation that would transform daily life across the globe