SL-11 R/B (12365)

COSPAR: 1981-028B | Alt Name: Tsiklon-2 35-503 Stage 2

DECAYED

Image

Additional Sources

Launch Details

Launch Date

March 20, 1981

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC90

Launch Vehicle

Tsiklon-2

Orbital Elements

NORAD ID

12365

International Designator

1981-028B

Decay Date

3/21/1981

Basic Satellite Info

Name

SL-11 R/B

Alternative Name

Tsiklon-2 35-503 Stage 2

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

10.9

Diameter

Span

10.9

Dry Mass

4000

Launch Mass

4000

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S692

Purpose

Unknown

Mission

Unknown

Manufacturer

YUZH

Life Expectancy

Unknown

Bus

11S692

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 14 Nov 2024

Today's brief covers potential shifts in Space Force's strategy, new milestones in military satellite programs, and advancements in ground systems for missile defense. We'll also highlight Rocket Lab's latest contract win and critical design reviews in drone technology.

Falcon 9 Grounding Threatens ISS Crew Rotation Schedule | KeepTrack X Report

Falcon 9 stand-down may impact next ISS crew rotation as NASA monitors the situation. Musk merges xAI into SpaceX to build space data centers. 9,633 Starlink sats on orbit.

X Report 22 Apr 2025

Amid multiple new launches, SpaceX marks its 300th orbital flight milestone at Cape Canaveral while pushing forward with cargo and reentry missions.

X Report 21 Mar 2025

SpaceX achieves a historic rocket reuse milestone and successfully launches NRO satellites, alongside charming interactions during Crew-9 Dragon recovery.

Space Brief 5 Aug 2025

Today's Space Brief covers Lockheed Martin's pursuits in missile interception, key military advancements in space integration, the UK launch license for Skyrora, and much more.

Space Brief 6 Mar 2025

Today's brief covers secret Space Force payloads monitoring China's satellites, collaborations reducing satellite tracking delays, and new AI projects for military operations.

Space Force Opens Secret Tracking Data to Commercial Firms | KeepTrack Space Brief

Space Force shares classified tracking data with commercial firms. Falcon 9 reentry linked to upper-atmosphere lithium plume. SpaceX launches 54 Starlink sats in one day.

2nd Starlink Debris Event in 3 Months Raises Alarm | KeepTrack X Report

A second Starlink satellite has generated on-orbit debris in just over 3 months, threatening SpaceX's 10,151-satellite working constellation.