SL-4 R/B (09805)

COSPAR: 1977-008B | Alt Name: Soyuz-U No. 092 Blok-I
DECAYED

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

Launch Date

February 7, 1977

Launch Pad

LC1

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

09805

International Designator

1977-008B

Decay Date

2/12/1977

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U No. 092 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

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

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.

Space Brief 31 May 2025

Space Brief 31 May 2025

Today's brief covers a significant GPS satellite launch by SpaceX, China's classified satellite mission, and Rocket Lab's strategic steps in the defense sector.

Blue Origin Targets New Glenn Return Before Year-End After Pad Explosion | KeepTrack Space Brief

Blue Origin Targets New Glenn Return Before Year-End After Pad Explosion | KeepTrack Space Brief

Blue Origin aiming for 2nd New Glenn launch by end of 2026 after LC-36 pad explosion at Cape Canaveral. Repair timeline still unclear; mission critical for national security payloads.

NROL-72 Spy Satellites Launched; Starlink PNT Blocked | KeepTrack X Report

NROL-72 Spy Satellites Launched; Starlink PNT Blocked | KeepTrack X Report

SpaceX's 13th NRO proliferated-arch mission lifted off May 11 as Starlink shuts its GPS-rival feature ahead of a looming IPO.

Space Brief 22 Mar 2025

Space Brief 22 Mar 2025

Today's briefing covers a range of critical space industry updates, from Space Force's strategic initiatives to SpaceX's latest launch record and groundbreaking developments in orbital manufacturing.

Artemis II Rolls Out to Pad 39B, China Hit by Dual Launch Failures | KeepTrack Space Brief

Artemis II Rolls Out to Pad 39B, China Hit by Dual Launch Failures | KeepTrack Space Brief

Artemis II SLS/Orion rolls to Launch Complex 39B for first crewed lunar mission since 1972. China suffers dual launch failures on the same day. SpainSat NG 2 declared total loss from debris strike.

Space Brief 27 Jul 2025

Space Brief 27 Jul 2025

Busy activities in space: SpaceX's series of Starlink launches dominate the week, while Vega C successfully deploys Earth science satellites.

Geosynchronous Orbit (GEO)

Geosynchronous Orbit (GEO)

Understanding the unique orbital sweet spot that keeps satellites perfectly positioned above Earth

X Report 4 May 2025

X Report 4 May 2025

Today's brief highlights the successful launch of 29 Starlink satellites, progress on the Starship fleet, and ongoing adjustments in SpaceX's launch schedules.