SL-4 R/B (41100)

COSPAR: 2015-071C | Alt Name: Soyuz-2-1v No. 001 Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

December 5, 2015

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Soyuz-2-1V

Orbital Elements

NORAD ID

41100

International Designator

2015-071C

Decay Date

3/17/2016

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-2-1v No. 001 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

RVSNR

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

7.3774

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Blok-I 14S54/RD-0110

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 19 Nov 2025

Today's Space Brief covers the latest developments in space debris detection, Ursa Major's defense push, and SpaceX's Starlink launch. Additionally, insights into microreactors for military bases, US Cyber Command updates, and gravitational wave discoveries are highlighted.

DAF Space Restructure Announced Within Days, PAE Leaders Named | KeepTrack Space Brief

Department of Air Force announces finalized Program Acquisition Executive structure within days, reshaping oversight of GPS, SBIRS, and Protected Tactical Satcom systems.

Space Brief 15 Apr 2025

Today's Space Brief covers Blue Origin's historic all-female spaceflight, the selection of companies for nuclear microreactor development by DIU, and NATO's adoption of AI technology for military planning.

NASA Tests Artemis 2 Fueling, Saudi Unveils DebriSolver Winners | KeepTrack Space Brief

NASA conducts critical Artemis 2 rocket fueling test. Saudi Space Agency announces global DebriSolver competition winners. SpaceX and Bezos push orbital data center plans.

Space Brief 19 May 2025

Today's space brief covers new ultraviolet data from the Europa Clipper, challenges in managing space debris, quantum advances in satellite technology, as well as a failed Indian satellite launch and more.

Pentagon $50B Iran Supplemental Drives Space Spending Surge | KeepTrack Space Brief

Pentagon's $50B Iran supplemental request signals major investment in missile defense and ISR satellites. Amazon reshuffles LEO government leadership amid Kuiper competition.

Space Force Halts All Vulcan Missions Over Solid Booster Issue | KeepTrack Space Brief

Space Force suspends all Vulcan launches pending solid rocket booster investigation. Rocket Lab scrubs HASTE hypersonic vehicle launch. Military space funding hits record highs.

X Report 12 Dec 2024

SpaceX progresses with Starship developments and sets sights on NASA's upcoming 3D sky-mapping satellite launch.