SL-4 R/B (23123)

COSPAR: 1994-033B | Alt Name: Soyuz-U-PVB No. 040 Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

June 14, 1994

Launch Site

PLMSC

Launch Pad

LC43/3

Launch Vehicle

Soyuz-U-PVB

Orbital Elements

NORAD ID

23123

International Designator

1994-033B

Decay Date

7/10/1994

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U-PVB No. 040 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

20.3632

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.

X Report 6 Dec 2024

SpaceX achieves a milestone with its 350th successful mission, including a significant Starlink launch, while Starship advances in testing. Meanwhile, SpaceX boosts SiriusXM's satellite fleet and industry competitors make strides.

X Report 27 Aug 2025

SpaceX successfully completes a critical test flight of its Starship vehicle while gearing up for another Starlink satellite launch, showcasing significant advancements in their launch capabilities.

SpaceX to Launch GPS Satellite After Mission Reassigned From ULA | KeepTrack X Report

SpaceX set to launch GPS 3-9 for Space Force after strategic switch from ULA's Vulcan to Falcon 9. 25 Starlink satellites deployed to polar orbit. Musk explains SpaceX exponential growth trajectory.

Space Brief 10 Jun 2025

Today's brief covers increased Space Force funding, a renewed focus on nuclear power in space, a proposed US missile defense system, new defense budget revelations, and NATO's call for increased air defenses.

X Report 5 Mar 2025

SpaceX's busy launch schedule faces scrubs, while industry leaders call for infrastructure upgrades, highlighting challenges in the bustling space sector.

The Satellite That Found 22 Photons and Changed Astronomy

On April 27, 1961, a Scout rocket lifted a 37-kilogram NASA satellite into orbit from Wallops Island carrying the first serious instrument for detecting cosmic gamma rays. Explorer 11 operated for seven months before its tape recorder failed. In that time it registered 22 gamma-ray photons - a pitiful number by modern standards, but enough to launch an entire branch of astronomy.

Space Force Awards Counter-Surveillance Payload Contracts | KeepTrack Space Brief

Space Force RCO awarded SBIR contracts for radar-detection payloads to counter adversary surveillance of U.S. satellites. Follow-on miniaturization effort already planned.

X Report 10 Feb 2025

SpaceX prepares for Starship Flight 8 with successful booster static fire; Starlink continues its expansion.