SL-4 R/B (05087)

COSPAR: 1971-023B | Alt Name: Voskhod (N149) Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

March 27, 1971

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

05087

International Designator

1971-023B

Decay Date

4/2/1971

Explore in the Catalog

Blok-I bus USSR satellites Rocket Bodies

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N149) 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 Day the Dyna-Soar Dream Died

Exactly 62 years ago, Defense Secretary Robert McNamara ended the X-20 Dyna-Soar program, canceling one of the most ambitious spaceplane projects of the early Space Race - a vehicle that could have put aircraft in orbit decades before the Space Shuttle.

X Report 3 Jul 2025

In a landmark achievement, SpaceX celebrated its 500th Falcon 9 launch by deploying 27 Starlink satellites while simultaneously advancing its reuse strategy with record-breaking milestones.

China Launches VLEO Alliance With Sats Below 300km | KeepTrack Space Brief

China formalized a national VLEO industry alliance with multiple satellites sustaining operations below 300 kilometers altitude. Propulsion startups attracting investment.

X Report 16 Jul 2025

SpaceX successfully launched another batch of Starlink satellites while marking a significant milestone with the 500th Falcon 9 mission. Additionally, the company is preparing for further testing of its Starship system and has begun collaborating with Amazon on their Project Kuiper constellation.

Starship Launch Site Construction Advances at Kennedy Space Center | KeepTrack X Report

Starship launch site construction progresses at Kennedy Space Center and Cape Canaveral. Elon Musk trolls Ryanair after budget airline refuses to install Starlink on its fleet.

Artemis 2 Targets April 1 Lunar Flyby with 4-Person Crew | KeepTrack Space Brief

NASA's Artemis 2 launches April 1 with Commander Reid Wiseman and 3 crew members for first crewed lunar flyby since Apollo 17 in 1972.

Space Brief 16 Jun 2025

Today's update covers NASA's Ax-4 mission preparations, ESA's satellite imaging program, Ursa Major's military contract, and China's expanding nuclear arsenal.

Kulasekarapattinam SSLV Launch Complex

India's second spaceport solves a geometry problem. How ISRO is building a dedicated small satellite facility that eliminates the costly dogleg maneuvers plaguing polar launches from Sriharikota.