SL-4 R/B (02071)

COSPAR: 1966-015B | Alt Name: Voskhod (N20) Blok-I
DECAYED

Image
SL-4 R/B Satellite Image
Additional Sources
Launch Details

Launch Date

February 22, 1966

Launch Pad

LC31

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

02071

International Designator

1966-015B

Decay Date

4/29/1966

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod (N20) 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

9.4

Diameter

2.7

Span

9.4

Dry Mass

3000

Launch Mass

3000

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 Jun 2025

Space Brief 25 Jun 2025

Today's highlights include the launch of a U.S. military satellite via SpaceX, a new French defense agreement for satellite services, and the Missile Defense Agency's successful ICBM target tracking with long-range radar.

Pentagon Orders 30,000 One-Way Drones; Sierra Space Raises $550M | KeepTrack Space Brief

Pentagon Orders 30,000 One-Way Drones; Sierra Space Raises $550M | KeepTrack Space Brief

Pentagon to order 30,000 attritable drones within days via Gauntlet competition. Meanwhile, Sierra Space closes $550M Series C funding round for national security spaceplane applications.

SpaceX Launches 21 SDA Missile-Tracking Satellites | KeepTrack Week in Review

SpaceX Launches 21 SDA Missile-Tracking Satellites | KeepTrack Week in Review

This week: SpaceX launched 21 SDA missile-tracking satellites, Soyuz MS-29 carried a new crew to the ISS, and Europe's space spending rose 12%.

Space Brief 21 Dec 2025

Space Brief 21 Dec 2025

Today's briefing highlights the SDA's significant satellite award, Blue Origin's groundbreaking flight, and NASA's call for an Artemis review.

Atlas 5 Retires After Final 551 Flight to Amazon Kuiper | KeepTrack Space Brief

Atlas 5 Retires After Final 551 Flight to Amazon Kuiper | KeepTrack Space Brief

ULA launches the final Atlas 5 551 configuration—its heaviest variant with 5 solid boosters—carrying Amazon's Project Kuiper satellite to low Earth orbit from Cape Canaveral.

X Report 19 Feb 2025

X Report 19 Feb 2025

SpaceX achieves a new milestone with a Falcon 9 landing near The Bahamas, closely following Rocket Lab's successful satellite launch.

X Report 25 Oct 2025

X Report 25 Oct 2025

SpaceX prepares for a record-setting launch of Starlink satellites, while Iridium faces challenges against SpaceX's expanding services.

Space Brief 23 Oct 2024

Space Brief 23 Oct 2024

Today's brief shines a light on surging space debris due to a new satellite breakup, SpaceX's continuous Starlink expansions, and notable legal support for Elon Musk's launch endeavors.