SL-3 R/B (04850)

COSPAR: 1971-003B | Alt Name: Vostok-2M (N19) Stage 3
DECAYED

Image
SL-3 R/B Satellite Image
Additional Sources
Launch Details

Launch Date

January 20, 1971

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Vostok 8A92M

Orbital Elements

NORAD ID

04850

International Designator

1971-003B

Decay Date

10/18/2002

Basic Satellite Info

Name

SL-3 R/B

Alternative Name

Vostok-2M (N19) Stage 3

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

3.8

Diameter

2.6

Span

3.8

Dry Mass

1440

Launch Mass

1440

Shape

Cyl

Radar Cross Section

11.5069

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

8A92ME

Purpose

Unknown

Mission

Unknown

Manufacturer

PROG

Life Expectancy

Unknown

Bus

Blok-E

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.

FAA Approves Starship Launches from LC-39A, FCC Accepts Orbital Data Center Filing | KeepTrack X Report

FAA Approves Starship Launches from LC-39A, FCC Accepts Orbital Data Center Filing | KeepTrack X Report

FAA approves SpaceX Starship launches from Kennedy Space Center LC-39A. FCC accepts 1-million satellite orbital data center filing. Canada ranks as 5th largest Starlink market.

Pentagon Reveals Space & Cyber "First Mover" Role in Iran Operations | KeepTrack Space Brief

Pentagon Reveals Space & Cyber "First Mover" Role in Iran Operations | KeepTrack Space Brief

Space & Cyber Command disrupted Iran ops as US munition stockpiles drop. Space Force shifts to commercial ground stations & faces acquisition workforce gaps.

Space Brief 17 Sep 2025

Space Brief 17 Sep 2025

Highlights include China's recent satellite launch, advancements in nuclear propulsion, non-kinetic tech developments for maritime defense, SpaceX's direct-to-device spectrum tests, and maneuvering satellites for Space Force missions.

X Report 19 Jun 2025

X Report 19 Jun 2025

Today's report highlights a catastrophic failure during Starship preparations, significant advancements in Starlink services in Ukraine and India, and the successful launch of 28 Starlink satellites.

Space Brief 17 Sep 2024

Space Brief 17 Sep 2024

Today's Space Brief covers crucial satellite events including upcoming launches, military space developments, and exceptional celestial sightings.

X Report 21 Dec 2024

X Report 21 Dec 2024

SpaceX prepares for Bandwagon-2 rideshare mission launch, while FAA updates license for Starship's next flight; Crew Dragon mission faces delays.

How does Google Map's Satellite View Feature Work?

How does Google Map's Satellite View Feature Work?

Learn which satellites take photos and why we can't get updates instantly.

The Pentagon's Mystery Spaceplane Takes Off

The Pentagon's Mystery Spaceplane Takes Off

On April 22, 2010, an Atlas V lifted off from Cape Canaveral carrying a reusable robotic spaceplane so secret that the Air Force would not even confirm its mission duration. It came back 224 days later, lighter, quieter, and more operational than anyone outside Washington had expected. Fifteen years later, the X-37B is still flying, and the military still will not say what it does.