SL-4 R/B (13426)

COSPAR: 1982-080B | Alt Name: Soyuz-U No. 276 Blok-I
DECAYED

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

Launch Date

August 19, 1982

Launch Pad

LC1

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

13426

International Designator

1982-080B

Decay Date

8/21/1982

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U No. 276 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.

Falcon 9 Returns to Flight, Crew-12 Targets Feb 11 Launch | KeepTrack X Report

Falcon 9 Returns to Flight, Crew-12 Targets Feb 11 Launch | KeepTrack X Report

Falcon 9 returns to flight with Starlink 17-33 mission after brief stand-down. Crew-12 astronaut launch confirmed for Feb 11. SpaceX shifts Dragon launches away from pad 39A.

Space Brief 14 Nov 2024

Space Brief 14 Nov 2024

Today's brief covers potential shifts in Space Force's strategy, new milestones in military satellite programs, and advancements in ground systems for missile defense. We'll also highlight Rocket Lab's latest contract win and critical design reviews in drone technology.

Space Brief 28 Oct 2025

Space Brief 28 Oct 2025

Today's brief covers China's Gaofen-14 satellite launch, Europe's advancements in asteroid defense through GomSpace, and Russia's controversial Burevestnik missile test.

Space Brief 4 Dec 2024

Space Brief 4 Dec 2024

Today's brief covers significant advancements in materials technology for space applications, a U.S. Navy contract for rocket production facilities, and NATO's upcoming classified cloud system.

Jonathan's Space Report

Jonathan's Space Report

Jonathan's Space Report is a comprehensive resource for space launch and satellite data, compiled by astrophysicist Dr. Jonathan McDowell.

Starlink-34343 | The Second Fragmentation Event in Three Months

Starlink-34343 | The Second Fragmentation Event in Three Months

STARLINK-34343 broke apart at 560 kilometers. SpaceX's response - launch more satellites the next morning - tells you everything about the confidence gap between fleet statistics and individual failure modes.

Space Brief 9 Aug 2025

Space Brief 9 Aug 2025

Today's briefing covers SpaceX's latest Starlink launch, Rocket Lab's upcoming Neutron rocket launch, NASA's lunar nuclear reactor project, and more.

New Glenn Upper Stage Fails, BlueBird 7 Lost, Space Brief 20 Apr 2026

New Glenn Upper Stage Fails, BlueBird 7 Lost, Space Brief 20 Apr 2026

New Glenn's upper stage malfunctioned April 19, stranding AST SpaceMobile's BlueBird 7; the satellite is lost. Vulcan may fly without solid boosters.