SL-4 R/B (51661)

COSPAR: 2022-014B | Alt Name: Soyuz-2-1a No. 056 Blok-I
DECAYED

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

Launch Date

February 15, 2022

Launch Pad

LC31

Launch Vehicle

Soyuz-2-1A

Orbital Elements

NORAD ID

51661

International Designator

2022-014B

Decay Date

2/17/2022

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-2-1a No. 056 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

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Blok-I 14S54 374BL02A

Purpose

Unknown

Mission

Unknown

Manufacturer

PROGT

Life Expectancy

Unknown

Bus

Blok-I

Configuration

Unknown

Motor

RD-0980

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

Space Brief 11 Nov 2025

Space Brief 11 Nov 2025

Record-breaking Chinese launches, SDA funding issues, and a new Starlink milestone highlight today's space news.

SpaceX IPO at $1.77T as SDA Faces Consolidation | KeepTrack Space Brief

SpaceX IPO at $1.77T as SDA Faces Consolidation | KeepTrack Space Brief

SpaceX launches Starlink while debuting on Nasdaq at $1.77 trillion valuation. Meanwhile, Senate FY2027 NDAA would dissolve SDA into Space Force, affecting Tranche constellation tracking.

Vulcan Grounding Threatens WGS-11 and OPIR Launches | KeepTrack Space Brief

Vulcan Grounding Threatens WGS-11 and OPIR Launches | KeepTrack Space Brief

ULA's Vulcan rocket grounded, imperiling Space Force WGS-11 communications satellite and Next-Gen OPIR missile warning payload. Both missions lack backup launch options.

Atlas 5 551 Flies Last Mission for Amazon Kuiper | KeepTrack Space Brief

Atlas 5 551 Flies Last Mission for Amazon Kuiper | KeepTrack Space Brief

ULA launched Atlas 5 551 configuration for final time on July 1, deploying Amazon Kuiper broadband satellites. New Glenn pad rebuild underway at LC-36 after May explosion.

X Report 15 Jan 2025

X Report 15 Jan 2025

SpaceX successfully launches two lunar landers and clears another milestone with Transporter-12 rideshare mission.

Blue Origin's New Glenn Destroyed in Hotfire Anomaly | KeepTrack Space Brief

Blue Origin's New Glenn Destroyed in Hotfire Anomaly | KeepTrack Space Brief

Blue Origin lost New Glenn during static fire testing at Launch Complex 36. Vehicle sustained serious damage in anomaly. NASA Artemis timeline impacts possible.

Starlink Airs First Super Bowl Ad, Artemis II Nears Launch | KeepTrack Space Brief

Starlink Airs First Super Bowl Ad, Artemis II Nears Launch | KeepTrack Space Brief

SpaceX debuts Starlink's first-ever Super Bowl ad to millions of viewers. Artemis II reaches Kennedy launch pad for first crewed lunar flyby since Apollo era.

Space Brief 22 Nov 2025

Space Brief 22 Nov 2025

Today's brief covers Blue Origin's national security mission, a new missile interceptor project by Space Force, developments with Starship boosters, and more.