SL-4 R/B (03907)

COSPAR: 1969-040B | Alt Name: Voskhod (N93) Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

April 23, 1969

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC1

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

03907

International Designator

1969-040B

Decay Date

4/26/1969

Explore in the Catalog

Blok-I bus USSR satellites Rocket Bodies

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N93) 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.

The Day a Rocket Changed Space Policy Forever

Thirty years ago, a Chinese rocket veered off course two seconds after liftoff, destroyed a village, and triggered a political scandal that reshaped how the United States controls space technology to this day

X Report 3 Nov 2025

SpaceX completed a successful Bandwagon rideshare mission, launching a private space station pathfinder along with multiple satellites, marking another significant milestone in 2025's launch schedule.

Space Brief 19 Jul 2025

Today's highlights include a record-breaking high-altitude image of the sun, SpaceX's latest Starlink satellite launch, and various military developments. Stay informed with detailed updates on launches, reentries, and the latest advancements in drone technology.

X Report 17 Nov 2024

SpaceX readies for Starship Flight 6, stacking the megarocket for its upcoming launch on Nov. 19. Get details on the timing and mission objectives.

Space Brief 26 Feb 2025

Today's brief covers the crash of a SpaceX Falcon 9 rocket over Europe, the Space Force's mapping efforts with Iron Dome, and key military appointments and funding decisions.

X Report 4 Nov 2025

Tesla's Cybertruck fleet integrates with SpaceX operations at Starbase, showcasing synergy between Musk's companies.

SpaceX Preps Starlink 6-96 Launch, Starship TPS Testing Continues at Starbase | KeepTrack X Report

SpaceX readies Starlink 6-96 launch of 29 satellites from Cape Canaveral. Thermal Protection System evaluations underway at Starbase for next Starship prototypes. SpaceX IPO expected to reshape market.

Space Brief 4 Sep 2025

Today's briefing covers a surprise launch by Israel, a milestone missile contract for Lockheed Martin, and updates on Indian missile defense strategies.