SL-4 R/B (08443)

COSPAR: 1975-108B | Alt Name: Voskhod 16-213 Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

November 21, 1975

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC31

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

08443

International Designator

1975-108B

Decay Date

11/27/1975

Explore in the Catalog

Blok-I bus USSR satellites Rocket Bodies

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod 16-213 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

11A57I

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 25 Dec 2025

Today's highlights include the Pentagon's report on China's military buildup, Innospace's upcoming launch plans, Starlink's rapid growth, China's significant space strides in 2025, and India's successful deployment of BlueBird 6.

SpaceX Launches NROL-105 Spy Satellite, GE Validates Hypersonic Ramjet Engine | KeepTrack Space Brief

SpaceX launches NROL-105 spy satellite from Vandenberg in first national security mission of 2026. GE and Lockheed validate compact rotating detonation ramjet for hypersonic missiles.

Boeing Starliner Grounded Until Mid-2027, NASA Warns | KeepTrack Space Brief

Boeing CST-100 Starliner faces up to one year delay before return-to-flight. NASA safety panel cites unresolved technical problems since mid-2024 crewed test.

The Day a Car Started Its Journey to the Stars

Seven years ago, SpaceX revolutionized spaceflight by launching the most powerful operational rocket in the world, carrying with it a cherry-red Tesla Roadster that captured global imagination

SpaceX Lofts 45 Payloads Including Korean CAS500-2 | KeepTrack X Report

SpaceX's Falcon 9 rideshare lifted 45 satellites including South Korea's CAS500-2 Earth observer from Vandenberg at 0700 UTC May 3.

X Report 16 Apr 2025

SpaceX gears up for another busy week with a Falcon 9 launch to the ISS while Vast Space expands its Haven-1 payload roster.

X Report 23 Jun 2025

SpaceX gears up for the Transporter 14 rideshare mission, while recent Starship setbacks have not deterred plans for Falcon 9 launches.

X Report 26 Oct 2025

SpaceX continues to make waves with record launches and emerging challenges in its lunar endeavors. A new launch site on the West Coast promises to ramp up capacity, even as the Falcon 9 prepares for its eventual retirement.