SL-4 R/B (08422)

COSPAR: 1975-104B | Alt Name: Voskhod 41-791 Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

November 4, 1975

Launch Site

PLMSC

Launch Pad

LC43/3

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

08422

International Designator

1975-104B

Decay Date

11/10/1975

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod 41-791 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.

The Rocket That Refused to Sink

On April 18, 2014, a Falcon 9 first stage did something no orbital rocket had ever done before. It fired its engines on the way down, steered itself through the atmosphere using grid fins that did not yet exist, and touched the Atlantic Ocean softly enough to survive the impact. Nobody recovered it. The data was the whole point.

Space Brief 3 Aug 2025

Today's brief covers NASA's collaboration with India for a new Earth-tracking satellite, China's expansion of its satellite internet network, and a groundbreaking cosmic shield for solar cells. Also highlighted are EchoStar's ambitious satellite order and Roscosmos' recent diplomatic moves.

Space Brief 3 Jan 2025

Today's brief covers the recent surge in SpaceX launches, Eutelsat's resolution of a OneWeb software issue, and various strategic previews for U.S. military branches in 2025.

X Report 17 Jun 2025

SpaceX successfully launched 26 Starlink satellites from California, preparing for upcoming crewed missions to the ISS.

X Report 12 Aug 2025

SpaceX ramps up Raptor 3 testing and the launch landscape heats up with Vulcan and Ariane set to lift off before Starlink missions.

Space Brief 6 Oct 2025

Today's highlights include Firefly's acquisition of SciTec, DARPA's vision for a moon economy, and ESA's new deep space antenna in Australia. Stay updated on the latest in space intelligence and defense technology transformations, plus noteworthy rogue planet phenomena.

X Report 19 Jun 2025

Today's report highlights a catastrophic failure during Starship preparations, significant advancements in Starlink services in Ukraine and India, and the successful launch of 28 Starlink satellites.

X Report 30 Apr 2025

SpaceX achieves a remarkable milestone with its 50th Falcon 9 launch of 2025, while Starlink continues to expand, facing competition from China's megaconstellation efforts.