SL-12 R/B(1) (18716)

COSPAR: 1987-109B | Alt Name: Proton-K 345-01 Stage 3
DECAYED

Image
SL-12 R/B(1) Satellite Image
Additional Sources
Launch Details

Launch Date

December 27, 1987

Launch Pad

LC200/39

Launch Vehicle

Proton-K/DM-2

Orbital Elements

NORAD ID

18716

International Designator

1987-109B

Decay Date

12/30/1987

Basic Satellite Info

Name

SL-12 R/B(1)

Alternative Name

Proton-K 345-01 Stage 3

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

6.5

Diameter

4.2

Span

6.5

Dry Mass

4185

Launch Mass

4185

Shape

Cyl

Radar Cross Section

37.17

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

8S812

Purpose

Unknown

Mission

Unknown

Manufacturer

ZIKH

Life Expectancy

Unknown

Bus

8S812

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.

X Report 27 Feb 2025

X Report 27 Feb 2025

SpaceX's Falcon 9 rockets propel space exploration and connectivity forward with a moon landing mission, Starlink deployment, and readiness for another Starship launch trial.

X Report 24 Dec 2024

X Report 24 Dec 2024

SpaceX advances with Bandwagon-2 mission, gains approval for Starship Flight 7, and continues Starlink expansion.

X Report 20 Jun 2025

X Report 20 Jun 2025

SpaceX experiences significant setbacks with Starship after Ship 36 explodes during static fire preparations, while Eutelsat secures funding to bolster competition against Starlink.

X Report 8 Mar 2025

X Report 8 Mar 2025

SpaceX faces setbacks with Starship Flight 8 amid debris fallout, achieves regulatory win for smartphone connectivity, and prepares for upcoming ISS missions.

Space Brief 19 Jun 2025

Space Brief 19 Jun 2025

Discover key developments in space defense and military operations, including new leadership for Space Force's 'Golden Dome,' SpaceX's contract for a military SATCOM network, and increased Israeli-Iranian missile activity.

SpaceX Stock Eyed for US Kids' Savings Accounts | KeepTrack X Report

SpaceX Stock Eyed for US Kids' Savings Accounts | KeepTrack X Report

Trump reportedly asked Musk to donate SpaceX equity to seed children's savings accounts as Starlink tops 10,706 working satellites in orbit.

X Report 4 Feb 2025

X Report 4 Feb 2025

Canada reconsiders Starlink contract amidst US tariff delays, and new concerns arise over falling space debris.

SpaceX Starfall Reentry Capsule Makes Debut Flight | KeepTrack X Report

SpaceX Starfall Reentry Capsule Makes Debut Flight | KeepTrack X Report

SpaceX's secretive Starfall reentry demo launched June 23 as Starmind AI constellation targets 1M orbital compute nodes.