SL-4 R/B (41821)

COSPAR: 2016-063B | Alt Name: Soyuz-FG No. 059 Blok-I
DECAYED

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

Launch Date

October 19, 2016

Launch Pad

LC31

Launch Vehicle

Soyuz-FG

Orbital Elements

NORAD ID

41821

International Designator

2016-063B

Decay Date

10/24/2016

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-FG No. 059 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

VVKOV

Country

Russia

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

5.021

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S510

Purpose

Unknown

Mission

Unknown

Manufacturer

PROGT

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 8 Apr 2025

Space Brief 8 Apr 2025

Key highlights include the launch of a Navy SEAL astronaut to the ISS, multi-billion dollar contracts awarded by the US Space Force, advancements in secure GPS technology, and a strategic ISR arrangement.

Space Brief 12 Jan 2025

Space Brief 12 Jan 2025

Today's briefing covers significant events including launch delays for SpaceX's Starship and Blue Origin's New Glenn, BepiColombo's landmark Mercury flyby, and the impact of Los Angeles fires on the space community.

X Report 20 Jul 2025

X Report 20 Jul 2025

SpaceX successfully launched 24 Starlink satellites, enhancing its constellation while continuing its leadership in satellite deployment for global internet coverage.

The Day America's Revolutionary Rocket Design Made Its Final Flight

The Day America's Revolutionary Rocket Design Made Its Final Flight

Twenty years ago, an Atlas rocket carrying a classified payload lifted off from Cape Canaveral, marking the end of a revolutionary spacecraft design that helped launch America into the Space Age

SpaceX Starfall Reentry Vehicle Plans Revealed by FAA | KeepTrack X Report

SpaceX Starfall Reentry Vehicle Plans Revealed by FAA | KeepTrack X Report

FAA documents expose SpaceX's Starfall reentry vehicle program, targeting in-space manufacturing support as the Starlink constellation holds 10,397 working satellites.

Katalyst Link Clears Tests for $500M SPARCS Rescue | KeepTrack Space Brief

Katalyst Link Clears Tests for $500M SPARCS Rescue | KeepTrack Space Brief

Katalyst's Link spacecraft passes key testing milestone ahead of June 2026 launch to rescue NASA's $500M SPARCS telescope. In-space servicing mission will create trackable conjunction risk during approach and docking phase.

GAO Warns Space Force Satellite Costs Rising, Workforce Cuts Add Risk | KeepTrack Space Brief

GAO Warns Space Force Satellite Costs Rising, Workforce Cuts Add Risk | KeepTrack Space Brief

GAO flags growing cost problems across Space Force satellite portfolio with workforce reductions compounding risks to missile-warning constellations like NGG and SWAT.

X Report 3 Dec 2024

X Report 3 Dec 2024

Starship developments continue to capture attention alongside Starlink's latest deployment milestones.