SL-4 R/B (28229)

COSPAR: 2004-013B | Alt Name: Soyuz-FG No. 009 Blok-I
DECAYED

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

Launch Date

April 19, 2004

Launch Pad

LC1

Launch Vehicle

Soyuz-FG

Orbital Elements

NORAD ID

28229

International Designator

2004-013B

Decay Date

4/22/2004

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-FG No. 009 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

5.0118

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.

X Report 26 Oct 2025

X Report 26 Oct 2025

SpaceX continues to make waves with record launches and emerging challenges in its lunar endeavors. A new launch site on the West Coast promises to ramp up capacity, even as the Falcon 9 prepares for its eventual retirement.

Space Brief 19 Jun 2025

Space Brief 19 Jun 2025

Discover key developments in space defense and military operations, including new leadership for Space Force's 'Golden Dome,' SpaceX's contract for a military SATCOM network, and increased Israeli-Iranian missile activity.

Falcon Heavy Returns After 18-Month Hiatus for ViaSat-3 | KeepTrack X Report

Falcon Heavy Returns After 18-Month Hiatus for ViaSat-3 | KeepTrack X Report

SpaceX's Falcon Heavy lifts off for the 12th time after 18 months grounded, delivering the final ViaSat-3 satellite from LC-39A at 10:21 a.m. EDT.

SpaceX Accuses Amazon of Debris Violations at FCC | KeepTrack X Report

SpaceX Accuses Amazon of Debris Violations at FCC | KeepTrack X Report

SpaceX filed an FCC complaint against Amazon over orbital debris violations as Starship V3 gets a maiden voyage date and a $178.5M Space Force deal lands.

X Report 1 Jul 2025

X Report 1 Jul 2025

SpaceX gears up for an exciting July with a doubleheader launch planned for the east coast and ongoing advancements in Starlink technology.

SpinLaunch's Kinetic Launch System

SpinLaunch's Kinetic Launch System

How a California startup's massive centrifuge could transform space access by eliminating rocket fuel, reducing costs by 70%, and enabling daily satellite launches - if it can overcome the physics of scaling from suborbital tests to orbital reality

Space Brief 6 Nov 2025

Space Brief 6 Nov 2025

Today's briefing covers Iceye's new aerospace service for defense clients, ESA's plan for dual-use satellites, and key defense agreements impacting satellite technology.

Musk Confirms Starmind AI Constellation, X Report 24 Jun 2026

Musk Confirms Starmind AI Constellation, X Report 24 Jun 2026

Musk confirms Starmind, an AI satellite constellation targeting 1 million orbital compute nodes. Starfall's debut and Dragon's ISS departure follow.