SL-4 R/B (21947)

COSPAR: 1992-022B | Alt Name: Soyuz-U2 No. 059 Blok-I
DECAYED

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

Launch Date

April 19, 1992

Launch Pad

LC1

Launch Vehicle

Soyuz-U2

Orbital Elements

NORAD ID

21947

International Designator

1992-022B

Decay Date

4/21/1992

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U2 No. 059 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

21.87

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 9 Feb 2025

X Report 9 Feb 2025

SpaceX prepares for another Starlink launch while facing potential C-band spectrum challenges.

Space Brief 16 Aug 2025

Space Brief 16 Aug 2025

Today's brief covers ULA's new mission for the US Space Force, China's moon rocket test, delays in the DARC radar system, and SpaceX's Starlink launches.

Apophis 2029 Flyby: ESA-JAXA Joint Mission Locked In | KeepTrack Space Brief

Apophis 2029 Flyby: ESA-JAXA Joint Mission Locked In | KeepTrack Space Brief

ESA and JAXA finalize collaboration for asteroid Apophis 2029 flyby at 32,000 km—closer than geostationary orbit. Historic near-Earth encounter being heavily observed.

X Report 27 Dec 2024

X Report 27 Dec 2024

SpaceX rounds off a record-setting year with over 130 launches, achieving new milestones in Starship development and Starlink expansion.

New Glenn Damaged in Hotfire Anomaly at LC-36 | KeepTrack Space Brief

New Glenn Damaged in Hotfire Anomaly at LC-36 | KeepTrack Space Brief

Blue Origin's New Glenn suffered a damaging anomaly during hotfire testing at Launch Complex 36, grounding the heavy-lift rocket indefinitely with no return-to-flight timeline announced.

Space Brief 12 Apr 2025

Space Brief 12 Apr 2025

Highlights include significant advances in satellite refueling experiments, a key design milestone for missile defense, and a feature on the satellite Cosmos 2246.

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.

X Report 9 Dec 2024

X Report 9 Dec 2024

SpaceX's latest Starlink satellite launch boosts their constellation and Starship development progresses steadily.