SL-4 R/B (14028)

COSPAR: 1983-036B | Alt Name: Soyuz-U 54-957 Blok-I
DECAYED

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

Launch Date

April 22, 1983

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

14028

International Designator

1983-036B

Decay Date

4/26/1983

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U 54-957 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

11S510

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 Nov 2025

Space Brief 25 Nov 2025

Today's briefing covers Chinese satellite launches, military defense strategies in space, increasing launch activity at the Space Coast, and potential rivals to SpaceX's Starlink.

Space Brief 7 Mar 2025

Space Brief 7 Mar 2025

Key insights from the latest SpaceX Starship breakup, the establishment of a new satellite mobile service, and enhancing America's missile shield capabilities through satellites.

X Report 22 Aug 2025

X Report 22 Aug 2025

SpaceX successfully launched the U.S. Space Force's eighth X-37B spaceplane mission while preparing for an upcoming Starship launch. Meanwhile, the company continues to expand its Starlink satellite constellation.

Space Brief 1 Dec 2024

Space Brief 1 Dec 2024

Today's highlights: China's Long March 12 boosts lunar ambitions, SpaceX supports NRO's satellite infrastructure, Firefly prepares lunar mission, and NASA partners with SpaceX for Titan exploration.

Space Brief 26 Feb 2025

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 22 Nov 2025

X Report 22 Nov 2025

Major challenges emerged with SpaceX's next-generation Starship booster testing, while Starlink deployments continued with successful launches.

LeoLabs and the Business of Watching Everything

LeoLabs and the Business of Watching Everything

A startup built on Cold War-era radar science now tracks 25,000 objects in orbit - and the Pentagon can't get enough of it. But can its radars really compete with the Space Surveillance Network?

NASA Expands SpaceX Crew Contract as Boeing Stalls | KeepTrack X Report

NASA Expands SpaceX Crew Contract as Boeing Stalls | KeepTrack X Report

NASA adds crew missions to SpaceX's contract as Boeing Starliner certification stalls, while Falcon 9 hits its 60th orbital launch of 2026.