SL-4 R/B (07406)

COSPAR: 1974-061B | Alt Name: Soyuz-U No. 011 Blok-I
DECAYED

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

Launch Date

August 6, 1974

Launch Pad

LC1

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

07406

International Designator

1974-061B

Decay Date

8/13/1974

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U No. 011 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.

Booster 20 Fires All 33 Engines in Record Test | KeepTrack Space Brief

Booster 20 Fires All 33 Engines in Record Test | KeepTrack Space Brief

SpaceX completed a full 33-engine static fire on Booster 20, the longest duration test to date. The milestone clears a major hurdle before the next Starship flight attempt.

X Report 20 May 2025

X Report 20 May 2025

SpaceX gears up for new Starlink shell deployment and secures updated licensing for Starship, amidst ongoing preparations for Falcon 9 launches.

X Report 21 Nov 2024

X Report 21 Nov 2024

SpaceX's Starship gains military attention, a feather-light achievement, and a busy week for Falcon 9.

Space Brief 18 Oct 2024

Space Brief 18 Oct 2024

Explore exciting updates on satellite reentries impacting Earth's atmosphere, China's ambitious space exploration plans, and the latest advancements in the search for extraterrestrial life.

Space Brief 11 Jun 2025

Space Brief 11 Jun 2025

Today's Space Brief covers a major partnership in space tech distribution, China's orbital refueling preparations under U.S. scrutiny, recent U.S. defense budget reveals, and an exciting hyperspectral imagery release from Xplore.

X Report 15 Dec 2025

X Report 15 Dec 2025

SpaceX made significant strides in satellite deployment with successful launches of 27 and 29 Starlink satellites, marking both a milestone in landings and ongoing expansion of the Starlink constellation.

Space Brief 22 Apr 2025

Space Brief 22 Apr 2025

Today's brief highlights key advancements in space technology and innovative military initiatives. Featuring deep space tracking system upgrades, a push towards quantum communications in orbit, and critical radar developments.

X Report 8 Feb 2025

X Report 8 Feb 2025

SpaceX makes strides on Starship launch pad, upcoming Starlink infusions from California and Florida, and regulatory challenges loom with FCC and C-band spectrum.