SL-4 R/B (04539)

COSPAR: 1970-074B | Alt Name: Voskhod (N134) Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

September 17, 1970

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC31

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

04539

International Designator

1970-074B

Decay Date

9/22/1970

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N134) 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.

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 28 Dec 2025

Exploring the future of space with concerns on space debris, rapid growth in orbital data centers, and new developments at launch sites.

Orion Crew Returns After Historic Lunar Mission | KeepTrack Space Brief

Artemis 2's four-person crew splashed down April 10 after first crewed lunar flyby since Apollo 17. Orion performance data critical for Artemis 3 south pole landing planning.

Space Force Requests $1.6B for New LEO Relay Network | KeepTrack Space Brief

Space Force scraps SDA transport layer, requests $1.6 billion for proliferated LEO SATCOM constellation. Roger Mason nominated to lead NRO.

Artemis 2 Crew First Lunar-Bound Humans Since 1972 | KeepTrack Space Brief

Artemis 2 Orion carries first humans toward the Moon in 53 years. Spacecraft in good health after trans-lunar injection; lunar flyby observation plan due April 6.

Space Brief 26 Jan 2025

Spacewalks have resumed on the ISS, while Blue Origin prepares for a unique New Shepard mission. In other news, astronomers push for a ban on space ads and potential budget cuts threaten the JWST.

Space Brief 23 Feb 2025

SpaceX launches Starlink satellites from both coasts, while first 3D atmospheric map of an exoplanet reveals extreme weather patterns, and Starlink missions push total count over 8,000 satellites.

Rocket Lab Neutron Targets Q4 2026 Debut, Space Brief 9 May 2026

Rocket Lab Neutron's first launch is targeted for Q4 2026 after a tank test failure, backed by a new 5-launch deal. Plus Globalstar's 1,410 km refresh.