SL-4 R/B (05765)

COSPAR: 1972-001B | Alt Name: Voskhod (N175) Blok-I
DECAYED

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

Launch Date

January 12, 1972

Launch Pad

LC31

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

05765

International Designator

1972-001B

Decay Date

1/20/1972

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N175) 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.

Sally Ride and the Twenty Years It Took America to Catch Up

Sally Ride and the Twenty Years It Took America to Catch Up

At 7:33 on the morning of 18 June 1983, a 32-year-old astrophysicist named Sally Ride rode Challenger off Pad 39A and became the first American woman in space. She got there two decades after the Soviets, and only after months of being asked whether spaceflight would damage her reproductive organs and whether she planned to cry.

Space Brief 25 Nov 2024

Space Brief 25 Nov 2024

Today's brief highlights the need for better space debris management, multiple SpaceX Starlink launches, and NASA's upcoming lunar cargo delivery plans.

Space Brief 26 Oct 2025

Space Brief 26 Oct 2025

Today's brief covers a new Space Force contract for advanced tracking systems, innovative debris removal strategies, pivotal new satellite launches, and significant updates in air quality tracking from orbit.

Space Brief 12 Aug 2025

Space Brief 12 Aug 2025

Today's brief covers a groundbreaking national security mission for ULA's Vulcan, NASA's collaboration with LeoLabs for enhanced collision avoidance, and SEOPS' new satellite tracking services, among other key developments.

Space Brief 2 Jun 2025

Space Brief 2 Jun 2025

Today's edition covers SpaceX's Starlink launch delay, a breakthrough in ceramic manufacturing for space, and Momentus's orbital tech demo, among other headlines.

First Graviton Detector Concept Proposed, Space Force Shelves R-GPS Program | KeepTrack Space Brief

First Graviton Detector Concept Proposed, Space Force Shelves R-GPS Program | KeepTrack Space Brief

Keck Foundation team proposes first-ever graviton detector concept. Space Force shelves Resilient GPS program. China advances Long March 12B reusable rocket with static fire test at Jiuquan.

X Report 12 Aug 2025

X Report 12 Aug 2025

SpaceX ramps up Raptor 3 testing and the launch landscape heats up with Vulcan and Ariane set to lift off before Starlink missions.

X Report 7 Feb 2025

X Report 7 Feb 2025

DIU explores SpaceX Starship's in-space refueling; Investors advise startups against competing or emulating SpaceX.