SL-4 R/B (38672)

COSPAR: 2012-037B | Alt Name: Soyuz-FG No. 042 Blok-I
DECAYED

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

Launch Date

July 15, 2012

Launch Pad

LC1

Launch Vehicle

Soyuz-FG

Orbital Elements

NORAD ID

38672

International Designator

2012-037B

Decay Date

7/17/2012

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-FG No. 042 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

VVKO

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

17.617

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S510

Purpose

Unknown

Mission

Unknown

Manufacturer

PROGT

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.

Space Force Eyes 1,000 Launches by 2031, New Site Required | KeepTrack Space Brief

Space Force Eyes 1,000 Launches by 2031, New Site Required | KeepTrack Space Brief

Space Force projects ~1,000 launches between FY2027–FY2031, averaging 200 annually. DAF study concludes new launch site is "probably" required to absorb cadence.

Second Starlink Debris Anomaly in 3 Months | KeepTrack X Report

Second Starlink Debris Anomaly in 3 Months | KeepTrack X Report

A second Starlink satellite malfunction in just over three months has generated on-orbit debris, raising fresh questions about SpaceX's 10,151-strong working constellation.

Space Brief 21 Apr 2025

Space Brief 21 Apr 2025

Today's briefing highlights SpaceX's recent launch of spy satellites, a US Space Force contract for deep space tracking, and advancements in quantum communications in space.

Falcon 9 Launches 25 Starlink Satellites After Weather Delays | KeepTrack X Report

Falcon 9 Launches 25 Starlink Satellites After Weather Delays | KeepTrack X Report

SpaceX launches 25 Starlink satellites from Vandenberg after multiple weather delays. 20th Falcon 9 mission of 2026 features second-ever booster landing near The Bahamas.

SpaceX Orbital Data Center Plans Draw Astronomer Fury | KeepTrack X Report

SpaceX Orbital Data Center Plans Draw Astronomer Fury | KeepTrack X Report

SpaceX's orbital data center constellation and TERAFAB's $25B AI chip factory spark backlash as Starlink surpasses 10,116 working satellites.

Space Brief 24 Nov 2024

Space Brief 24 Nov 2024

Today's briefing covers Blue Origin's New Glenn nearing its first launch, SpaceX's 400th Falcon 9 mission with Starlink satellites, advancements in space-based weather prediction, and more.

X Report 31 Jul 2025

X Report 31 Jul 2025

Today's highlights include the ongoing Crew-11 mission launch and Starship preparations for its upcoming test flight.

Space Brief 9 Sep 2025

Space Brief 9 Sep 2025

Explore the latest advancements in satellite technology, military satellite applications, and collaborative efforts in hypersonic vehicle tracking. Discover the transformative power of new deals shaping global communication networks.