SL-12 R/B(AUX MOTOR) (16215)

COSPAR: 1985-102E | Alt Name: DM2-9L SOZ-1

DECAYED

Image

Additional Sources

Launch Details

Launch Date

October 25, 1985

Launch Site

Tyuratam Missile and Space Complex

Launch Pad

LC200/40

Launch Vehicle

Proton-K/DM-2

Orbital Elements

NORAD ID

16215

International Designator

1985-102E

Decay Date

7/13/1986

Basic Satellite Info

Name

SL-12 R/B(AUX MOTOR)

Alternative Name

DM2-9L SOZ-1

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

1.1

Diameter

0.5

Span

1.1

Dry Mass

Launch Mass

120

Shape

Cyl

Radar Cross Section

2.07

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

SOZ

Purpose

Unknown

Mission

Unknown

Manufacturer

NPOE

Life Expectancy

Unknown

Bus

SOZ

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.

Hayabusa | The Crippled Falcon That Carried an Asteroid Home

Sixteen years ago today, a fireball tore across the Australian outback. Most of it was a dying Japanese spacecraft burning up after a seven-year ordeal. The bright dot racing ahead of the wreckage was a capsule holding the first grains of an asteroid ever returned to Earth.

Falcon 9 Lofts 5-Ton Cygnus XL to ISS | KeepTrack X Report

SpaceX's Falcon 9 delivered Northrop Grumman's second Cygnus XL — carrying over 5 tons of cargo — to the ISS on April 11, 2026.

Space Brief 23 Jan 2025

Today's briefing covers the U.S. Space Force's substantial investments in commercial satellite services, a strategic military shift, Chinese space station upgrades, and NASA's policy changes.

Starship Flight 13 Targets July 16 Launch | KeepTrack X Report

SpaceX targets July 16 for Starship Flight 13 from Starbase, aiming to fix Flight 12 issues and deploy working Starlink satellites.

Falcon 9 Booster Hits Record 35th Flight | KeepTrack X Report

A Falcon 9 booster sets a reusability record on its 35th flight during the Starlink 10-35 mission, the constellation's 53rd dedicated launch.

SpaceX Launches NROL-105 Spy Satellite, GE Validates Hypersonic Ramjet Engine | KeepTrack Space Brief

SpaceX launches NROL-105 spy satellite from Vandenberg in first national security mission of 2026. GE and Lockheed validate compact rotating detonation ramjet for hypersonic missiles.

The Day America Entered the Space Age

Sixty-seven years ago, a slender rocket carried America's first satellite into orbit, discovering a mysterious feature of our planet that would change our understanding of space forever

Starlink Hits 10,000 Satellites in Orbit, X Report 17 Mar 2026

How many Starlink satellites are in orbit in 2026? SpaceX passed 10,000 after the Starlink 17-24 launch, with 10,020 in orbit and 11,529 launched.