SL-8 R/B (06351)

COSPAR: 1973-005B | Alt Name: Kosmos-3M Yu149-37 Stage 2

DECAYED

Image

Additional Sources

Launch Details

Launch Date

January 26, 1973

Launch Site

KYMSC

Launch Pad

LC107/1

Launch Vehicle

Kosmos 11K65M

Orbital Elements

NORAD ID

06351

International Designator

1973-005B

Decay Date

3/2/1988

Explore in the Catalog

S3 bus USSR satellites Rocket Bodies

Basic Satellite Info

Name

SL-8 R/B

Alternative Name

Kosmos-3M Yu149-37 Stage 2

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

4.2

Diameter

2.4

Span

4.2

Dry Mass

1434

Launch Mass

1434

Shape

Cyl

Radar Cross Section

19.7839

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

S3M

Purpose

Unknown

Mission

Unknown

Manufacturer

OAZ

Life Expectancy

Unknown

Bus

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.

STS-51B | Three-Tenths of a Second from Disaster

Forty years ago today, Challenger lifted off LC-39A on a science mission that nobody outside Morton-Thiokol would call dangerous. Years later, after the orbiter and seven other astronauts were gone, investigators looked at the recovered boosters from STS-51B and realized the crew had come within a fraction of a second of dying first. This is the story of the launch that should have been a warning.

Space Brief 30 Nov 2025

Today's highlights include Europe's record space budget for independence, Transporter-15's successful launch of 140 payloads, and the damage to the Baikonur pad affecting upcoming ISS missions.

SpaceX Launches GPS Satellite Tonight, Starship V3 Targets Mid-March | KeepTrack X Report

SpaceX to launch GPS III SV09 satellite for Space Force at 11:38 p.m. EST from Cape Canaveral. Musk confirms Starship V3 with Raptor V3 engines targets mid-March first flight.

X Report 28 Nov 2024

SpaceX advances with Starship, gains FCC approval for new services, and predicts a future shift in spacecraft dominance.

X Report 7 Jun 2025

SpaceX successfully launched the SXM-10 satellite for SiriusXM and prepares for the Ax-4 mission to the ISS amid political tensions involving Elon Musk and President Trump.

X Report 1 Feb 2025

Exciting SpaceX updates include the arrival of Athena moon lander, SPHEREx telescope's upcoming launch, and SpaceX's GigaBay development.

The Day Fiery Failure Launched NASA

Sixty-eight years ago, America's first satellite exploded on the launchpad in front of the entire world. But from the ashes of Vanguard TV-3 came the determination that would eventually win the Space Race.

Space Force Opens Cape Canaveral and Vandenberg Pads to New Launch Providers | KeepTrack Space Brief

Space Force issues call for launch providers at Cape Canaveral and Vandenberg. Vandenberg opens Space Launch Complex 14 bidding with Feb 12 deadline. Electra pitches hybrid aircraft to Pentagon.