SL-4 R/B (13450)

COSPAR: 1982-085B | Alt Name: Soyuz-U 54-763 Blok-I
DECAYED

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

Launch Date

September 1, 1982

Launch Pad

LC31

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

13450

International Designator

1982-085B

Decay Date

9/9/1982

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U 54-763 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.

Crew-11 Returns to Earth After Historic ISS Medical Evacuation | KeepTrack X Report

Crew-11 Returns to Earth After Historic ISS Medical Evacuation | KeepTrack X Report

SpaceX Crew-11 mission returns safely to Earth after first-ever medical evacuation from ISS. Crew Dragon splashes down in Pacific Ocean off California coast. Mission ended early due to health concern.

Space Brief 1 Oct 2025

Space Brief 1 Oct 2025

Today's brief covers an increase in Chinese satellite launches, the operational status of the Space Force's ATLAS software, and a significant fundraising event in the defense sector.

Space Brief 12 Jul 2025

Space Brief 12 Jul 2025

Today's focus spans from major military training initiatives in orbit to key updates on drone policies and crucial satellite launches.

X Report 17 May 2025

X Report 17 May 2025

SpaceX gains regulatory approval for a new Starship test flight, further expands its role in U.S. defense, and successfully launches 26 additional Starlink satellites. United Airlines also rolls out Starlink Wi-Fi on its flights.

Space Brief 11 Sep 2024

Space Brief 11 Sep 2024

A recap of notable space events including the Soyuz MS-26 launch to the ISS, Polaris Dawn's altitude achievement, and satellite tracking updates.

The Day We Lost Apollo 1

The Day We Lost Apollo 1

Fifty-eight years ago, a tragic fire during a routine test transformed spacecraft design and created the foundation of modern spaceflight safety culture

Space Brief 8 Jan 2025

Space Brief 8 Jan 2025

Today's highlights include China's launch of the Shijian-25 for on-orbit refueling tests, major Pentagon contracts for solid rocket motors and hypersonic testing, and the US Space Force's record-setting year of launches.

SpaceX Wins $57M Golden Dome Satellite Crosslink Deal | KeepTrack Space Brief

SpaceX Wins $57M Golden Dome Satellite Crosslink Deal | KeepTrack Space Brief

SpaceX secures $57 million military contract for Link-182 satellite crosslink demo supporting Golden Dome missile defense. Also joins software working group.