SL-4 R/B (57863)

COSPAR: 2023-143B | Alt Name: Soyuz-2-1a No. 061 Blok-I
DECAYED

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

Launch Date

September 15, 2023

Launch Pad

LC31

Launch Vehicle

Soyuz-2-1A

Orbital Elements

NORAD ID

57863

International Designator

2023-143B

Decay Date

9/18/2023

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-2-1a No. 061 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

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Blok-I 14S54 374BL02A

Purpose

Unknown

Mission

Unknown

Manufacturer

PROGT

Life Expectancy

Unknown

Bus

Blok-I

Configuration

Unknown

Motor

RD-0110

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 11 May 2025

Space Brief 11 May 2025

Discover the latest innovations from Rocket Lab, new developments in hypersonic flight, and significant advances in satellite technology with BlackSky. Gain insights into the Space Force's mission and MIT physicists' breakthroughs in observing atoms.

SpaceX Eyes $60B Cursor AI Acquisition Ahead of IPO | KeepTrack X Report

SpaceX Eyes $60B Cursor AI Acquisition Ahead of IPO | KeepTrack X Report

SpaceX secured a $60B option to acquire Cursor AI while launching its 40th Falcon 9 mission of 2026, deploying 24 more Starlink satellites from Vandenberg.

The Day a Jupiter-Bound Spacecraft Traveled Past Venus

The Day a Jupiter-Bound Spacecraft Traveled Past Venus

Thirty-five years ago, NASA's Galileo spacecraft made a crucial flyby of Venus, pioneering a complex path through the inner solar system that would revolutionize planetary exploration

X Report 24 Feb 2025

X Report 24 Feb 2025

SpaceX faces challenges with a Falcon 9 reentry issue, while continuing to expand its Starlink constellation with new launches.

Suborbital Tourism Scorecard 2026, the Edge of Space Goes Quiet

Suborbital Tourism Scorecard 2026, the Edge of Space Goes Quiet

Twenty-two years after SpaceShipOne, the two companies that defined suborbital tourism are both sitting on the ground. Blue Origin parked New Shepard in January, Virgin Galactic has not flown a customer since 2024, and the math behind the whole business is finally getting an honest look.

X Report 3 May 2025

X Report 3 May 2025

Key updates include a successful Falcon 9 launch of 28 Starlink satellites and a static fire test of the Starship spacecraft, while T-Mobile's Starlink service aims to attract new customers.

The Day America Sent Two Secrets to the Sky

The Day America Sent Two Secrets to the Sky

Sixty-five years ago, America launched two very different space missions within hours of each other - one broadcast live to a fascinated nation, the other quietly reaching orbit from a fog-shrouded California launchpad while no one was watching

SpaceMobile-006 (BlueBird 6)

SpaceMobile-006 (BlueBird 6)

The largest commercial antenna ever deployed in low Earth orbit belongs to a company most people have never heard of. AST SpaceMobile's BlueBird 6 is either the future of cellular connectivity or the most ambitious overreach in telecom history - and it just finished unfolding.