SL-4 R/B (04577)

COSPAR: 1970-082B | Alt Name: Voskhod (N138) Blok-I
DECAYED

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

Launch Date

October 9, 1970

Launch Pad

LC1

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

04577

International Designator

1970-082B

Decay Date

10/13/1970

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N138) 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.

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.

Space Brief 27 Oct 2024

Space Brief 27 Oct 2024

Today's brief covers SpaceX's latest Starlink launch, updates on Crew-8's return, and preparations for the SLS Artemis II mission.

The Day We Lost Apollo 1

The Day We Lost Apollo 1

Fifty-eight years ago, a tragic fire during a routine test transformed spacecraft design and created the foundation of modern spaceflight safety culture

SpinLaunch's Kinetic Launch System

SpinLaunch's Kinetic Launch System

How a California startup's massive centrifuge could transform space access by eliminating rocket fuel, reducing costs by 70%, and enabling daily satellite launches - if it can overcome the physics of scaling from suborbital tests to orbital reality

X Report 20 Feb 2025

X Report 20 Feb 2025

SpaceX and Rocket Lab make headlines with simultaneous launches, while Musk's Starliner comments stir controversy.

X Report 22 Mar 2025

X Report 22 Mar 2025

SpaceX achieves its 450th Falcon 9 launch, setting a new turnaround record, while its competitor ULA remains grounded, awaiting clearance from the Space Force.

Space Brief 2 Dec 2024

Space Brief 2 Dec 2024

Today's space updates include a new EU space commissioner's priorities, insights from declassified satellite images, and an update on NASA's Europa Clipper mission. A highlight in the Satellite Spotlight features the Russian satellite COSMOS 2070.

Space Brief 23 Jun 2025

Space Brief 23 Jun 2025

Significant advancements and launches in space: NASA's hypersonic sensor breakthrough, ChinaSat-9C's launch, and SpaceX's resilient Falcon 9 operations.