SL-4 R/B (06996)

COSPAR: 1973-105B | Alt Name: Voskhod 29-755 Blok-I
DECAYED

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

Launch Date

December 21, 1973

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

06996

International Designator

1973-105B

Decay Date

1/1/1974

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod 29-755 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

11A57I

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.

SpaceX Blocks Unauthorized Russian Starlink Terminals | KeepTrack X Report

SpaceX Blocks Unauthorized Russian Starlink Terminals | KeepTrack X Report

SpaceX disables Starlink terminals used by Russian troops after Ukrainian coordination. Crew-12 delayed to Feb 13 by weather. 24 Starlink satellites launched from Vandenberg.

House Backs $55.5B Space Force Budget, Excludes $350B Reconciliation | KeepTrack Space Brief

House Backs $55.5B Space Force Budget, Excludes $350B Reconciliation | KeepTrack Space Brief

House appropriators approved $55.5 billion for Space Force but omitted $350 billion reconciliation funds, threatening Golden Dome and large-scale space programs' acquisition timelines.

Suborbital Tourism Scorecard 2026, the Edge of Space Goes Quiet

Suborbital Tourism Scorecard 2026, the Edge of Space Goes Quiet

Twenty-two years after SpaceShipOne, the two companies that defined suborbital tourism are both sitting on the ground. Blue Origin parked New Shepard in January, Virgin Galactic has not flown a customer since 2024, and the math behind the whole business is finally getting an honest look.

NRO Expands Commercial Satellite Role to Airborne Target Tracking | KeepTrack Space Brief

NRO Expands Commercial Satellite Role to Airborne Target Tracking | KeepTrack Space Brief

NRO awards three commercial data contracts and explores vetting satellite firms for airborne target tracking via U.S. Space Force. Strategic expansion of GEOINT capabilities.

Sally Ride and the Twenty Years It Took America to Catch Up

Sally Ride and the Twenty Years It Took America to Catch Up

At 7:33 on the morning of 18 June 1983, a 32-year-old astrophysicist named Sally Ride rode Challenger off Pad 39A and became the first American woman in space. She got there two decades after the Soviets, and only after months of being asked whether spaceflight would damage her reproductive organs and whether she planned to cry.

Space Brief 18 Jan 2025

Space Brief 18 Jan 2025

In today's brief: high-profile personnel changes in the Space Force, the inclusion of Space Force in historical political events, and strategic shifts in defense highlighted with a focus on satellite applications.

The Day Humanity Gained New Eyes on the Sun

The Day Humanity Gained New Eyes on the Sun

Fifteen years ago, NASA launched its most advanced solar observatory, revolutionizing our understanding of our star and transforming space weather prediction

Falcon 9 Grounded After Upper Stage Anomaly, Crew-12 at Risk | KeepTrack X Report

Falcon 9 Grounded After Upper Stage Anomaly, Crew-12 at Risk | KeepTrack X Report

SpaceX pauses all Falcon 9 launches after upper stage anomaly during Starlink mission. Crew-12 astronaut launch may be affected. Booster 19 rolls out for cryogenic testing.