SL-4 R/B (05559)

COSPAR: 1971-088B | Alt Name: Voskhod (N168) Blok-I
DECAYED

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

Launch Date

October 14, 1971

Launch Pad

LC31

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

05559

International Designator

1971-088B

Decay Date

10/18/1971

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N168) 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.

Hypersonica Missile Hits Mach 6 in Norway Flight Test | KeepTrack Space Brief

Hypersonica Missile Hits Mach 6 in Norway Flight Test | KeepTrack Space Brief

Hypersonica completes Mach 6+ hypersonic missile flight test in Norway covering 300+ km. Pentagon seeks commercial GEO spy satellites. Gilat wins $9M Israeli defense satcom deal.

X Report 19 Nov 2024

X Report 19 Nov 2024

Starship Flight 6 approaches with a daring booster catch, while SpaceX ramps up satellite launches and navigates regulatory challenges.

Space Brief 3 Mar 2025

Space Brief 3 Mar 2025

Historic moon landing by Firefly Aerospace, Spanish Air and Space Force advances with new simulator, and spotlight on OneWeb's communication satellite.

X Report 21 Apr 2025

X Report 21 Apr 2025

SpaceX launches its 32nd cargo mission to the ISS, and NRO marks a milestone with over 200 satellites deployed.

Starlink Mobile US Plan, Ship 40 Static Fire, X Report 27 Jun 2026

Starlink Mobile US Plan, Ship 40 Static Fire, X Report 27 Jun 2026

Starlink mobile service is planned for the US as SpaceX fires Ship 40's single Raptor in a prelaunch test, with 10,689 Starlink satellites working.

Space Force Acquisition Workforce Shortfall Threatens Modernization | KeepTrack Space Brief

Space Force Acquisition Workforce Shortfall Threatens Modernization | KeepTrack Space Brief

Space Force modernization stalls over workforce gaps. Deutsche Telekom targets 2028 for Starlink Mobile V2 across 10 EU nations. Iran ops strain US munition stocks.

Space Brief 18 Feb 2025

Space Brief 18 Feb 2025

Today's briefs cover SpaceX landing a Falcon 9 in The Bahamas, first disabled astronaut prepped for a mission, and key company updates from Blue Origin and K2 Space.

X Report 26 Nov 2025

X Report 26 Nov 2025

This edition highlights SpaceX's ambitious plans for Starship in light of recent developments, a busy launch week featuring multiple missions, and the latest updates on Starlink's operational status.