SL-12 R/B(1) (19684)

COSPAR: 1988-108B | Alt Name: Proton-K 329-02 Stage 3

DECAYED

Image

Additional Sources

Launch Details

Launch Date

December 10, 1988

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC200/40

Launch Vehicle

Proton-K/DM-2

Orbital Elements

NORAD ID

19684

International Designator

1988-108B

Decay Date

12/12/1988

Basic Satellite Info

Name

SL-12 R/B(1)

Alternative Name

Proton-K 329-02 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

Unknown

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.

Six Missions Worth Watching After Artemis II

Artemis II grabbed the headlines, but six other missions are quietly approaching milestones that could reshape what we know about Mercury, Mars, asteroids, exoplanets, and the Moon's south pole. Here is what is actually happening with each of them.

Your Phone Already Talks to Space

SpaceX quietly built the world's largest 4G network without a single cell tower. Over 650 satellites now connect standard smartphones directly from orbit, and most people carrying compatible phones don't know the service exists.

Space Brief 5 Nov 2025

Today's focus: Sidus Space's new AI edge computer, Space Force's dynamic operations initiative, and key Pentagon acquisition reforms.

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.

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

Pentagon Allocates $8B for Space-Based Moving Target Tracking | KeepTrack Space Brief

Pentagon requests $8 billion for space-based moving target tracking constellation in FY2027 budget. New NORAD IDs expected as Space Force expands orbital ISR capabilities.

Space Brief 22 Sep 2025

Today's edition highlights the operational deployment of HawkEye 360's Cluster 12, Shandong's record satellite launch, Planet Labs' latest imaging achievements, SpaceX's Starlink launches, and more.

Space Brief 22 Mar 2025

Today's briefing covers a range of critical space industry updates, from Space Force's strategic initiatives to SpaceX's latest launch record and groundbreaking developments in orbital manufacturing.