SL-4 R/B (06838)

COSPAR: 1973-067B | Alt Name: Soyuz No. 26 Blok-I
DECAYED

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

Launch Date

September 27, 1973

Launch Pad

LC1

Launch Vehicle

Soyuz 11A511

Orbital Elements

NORAD ID

06838

International Designator

1973-067B

Decay Date

9/29/1973

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz No. 26 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.

X Report 31 Mar 2025

X Report 31 Mar 2025

New experiments in space agriculture begin with Fram2 mission, a historic polar orbit flight, and a Starlink launch postponement.

Starship V3 Debuts on Flight 12 May 20 | KeepTrack X Report

Starship V3 Debuts on Flight 12 May 20 | KeepTrack X Report

SpaceX's first Starship V3 launches May 20 on Flight 12, as Starlink's 10,354 active sats force a historic carrier alliance.

Growing Threat of Space Junk

Growing Threat of Space Junk

Over 27,000 high-speed pieces of space junk now threaten vital satellites, requiring sophisticated tracking and urgent innovation of orbital debris removal methods like harpoons and nets.

X Report 13 Mar 2025

X Report 13 Mar 2025

SpaceX scrubs Crew-10 launch due to hydraulics issue; successful Falcon 9 launch for NASA missions, and Texas supports SpaceX expansion.

Deep Space Advanced Radar Capability (DARC)

Deep Space Advanced Radar Capability (DARC)

How a groundbreaking radar network is transforming our ability to monitor threats in deep space while strengthening international security partnerships

Space Brief 27 Nov 2024

Space Brief 27 Nov 2024

Space highlights include a debut launch of ZhuQue-2E, Firefly's lunar lander timeline, semiconductor funding for satellites, and ISS debris avoidance.

SpaceX Buys Cursor AI for $60B After IPO, X Report 17 Jun 2026

SpaceX Buys Cursor AI for $60B After IPO, X Report 17 Jun 2026

SpaceX acquires Cursor AI maker Anysphere for $60B in its first post-IPO deal, as Falcon 9 lofts 3 Block 2 BlueBird satellites for AST SpaceMobile.

DAF Space Restructure Announced Within Days, PAE Leaders Named | KeepTrack Space Brief

DAF Space Restructure Announced Within Days, PAE Leaders Named | KeepTrack Space Brief

Department of Air Force announces finalized Program Acquisition Executive structure within days, reshaping oversight of GPS, SBIRS, and Protected Tactical Satcom systems.