SL-4 R/B (22593)

COSPAR: 1993-021B | Alt Name: Soyuz-U 12-991 Blok-I
DECAYED

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

Launch Date

April 2, 1993

Launch Site

PLMSC

Launch Pad

LC16/2

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

22593

International Designator

1993-021B

Decay Date

4/7/1993

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U 12-991 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

RVSNR

Country

Russia

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

0.31

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S510

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.

Neil Gehrels Swift Observatory

Neil Gehrels Swift Observatory

Designed for a two-year mission to catch gamma-ray bursts in the act, Swift is now 21 years old, slowly falling out of the sky, and the subject of an unprecedented private rescue mission. Nobody planned for it to be this hard to let go.

Space Force Awards First-Ever $52M Satellite Deorbit Contract to Starfish Space | KeepTrack Space Brief

Space Force Awards First-Ever $52M Satellite Deorbit Contract to Starfish Space | KeepTrack Space Brief

Space Force awards first-of-its-kind $52M contract to Starfish Space for deorbiting defunct satellites. AST SpaceMobile selected for Missile Defense Agency SHIELD program. $26B Space Force budget confirmed.

The Details of Apollo 1

The Details of Apollo 1

How a catastrophic fire in 1967 fundamentally altered NASA's approach to human spaceflight and continues to influence modern spacecraft design

X Report 9 Aug 2025

X Report 9 Aug 2025

SpaceX's Crew-10 astronauts are set to return to Earth after a five-month mission, while the company prepares for the launch of 24 new Starlink satellites from Vandenberg Space Force Base.

Space Brief 10 Mar 2025

Space Brief 10 Mar 2025

Today's briefing covers significant events, including advancements in US missile warning systems, SpaceX's Florida Starship plans, a European rocket's success, and NASA's upcoming missions.

Space Brief 3 Nov 2025

Space Brief 3 Nov 2025

Highlighting India's significant military satellite launch, real-time satellite tracking developments in Europe, SpaceX's new rideshare mission, and more space industry news.

X Report 9 Oct 2025

X Report 9 Oct 2025

SpaceX continues to make strides with successful satellite launches and competitive maneuvering in the direct-to-device market, as AST SpaceMobile aligns with Verizon for space-based cellular services.

Jonathan's Space Report

Jonathan's Space Report

Jonathan's Space Report is a comprehensive resource for space launch and satellite data, compiled by astrophysicist Dr. Jonathan McDowell.