SL-4 R/B (08899)

COSPAR: 1976-055B | Alt Name: Voskhod 16-654 Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

June 16, 1976

Launch Site

PLMSC

Launch Pad

LC43/3

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

08899

International Designator

1976-055B

Decay Date

6/23/1976

Explore in the Catalog

Blok-I bus USSR satellites Rocket Bodies

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod 16-654 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.

NASA Postpones Spacewalk Over Medical Concern, Sierra Space Delivers SDA Satellites Early | KeepTrack Space Brief

NASA delays first 2026 spacewalk due to ISS crew medical issue. Sierra Space completes SDA Tranche 2 satellite structures ahead of schedule. Space Force advances Handle 2.0 standardization.

SpaceX and xAI Tapped for Pentagon's $100M Drone Contest | KeepTrack X Report

Pentagon selects SpaceX and xAI for $100M autonomous drone competition. Two Falcon 9 rockets launch Starlink sats from California and Florida. 11,215 total Starlink satellites launched.

X Report 23 Apr 2025

SpaceX marks a significant milestone with its Bandwagon-3 mission, while Ukraine explores Starlink alternatives.

Space Brief 8 May 2025

Today we cover new appointments at NASA, calls for increased Space Force funding, and a successful test of a hypersonic vehicle. Further investigations target SpaceX, and a documentary highlights space superiority.

Starlink Satellite Count Hits 10,087, X Report 22 Mar 2026

How many Starlink satellites are in orbit in 2026? 10,087 working of 10,097 on orbit, 11,612 launched to date, per KeepTrack data.

SpaceX Deploys 21 Military Data-Relay Satellites for SDA, Space Brief 17 Jul 2026

SpaceX launched 21 York Space Systems satellites for Space Development Agency's Tranche 1 Transport Layer, bringing SDA's military data-relay constellation to roughly half its planned size.

Space Brief 21 Sep 2025

Today's Space Brief covers a significant signals intelligence launch, a record-breaking satellite deployment in China, a glimpse into the newest stealth drone, a potential delay for NASA's lunar lander, and more exciting updates from satellite world.

SpaceX Postpones Falcon Heavy Launch Carrying Secretive X-37B Spaceplane

SpaceX delays the much-anticipated Falcon Heavy launch of the secretive X-37B military spaceplane, marking a significant moment in space exploration and military technology.