SL-8 DEB (21185)

COSPAR: 1991-009AY | Alt Name: deb S3M

Image
SL-8 DEB Satellite Image
Additional Sources
Launch Details

Launch Date

February 12, 1991

Launch Site

PLMSC

Launch Pad

LC133/3

Launch Vehicle

Kosmos 11K65M

Orbital Elements

NORAD ID

21185

International Designator

1991-009AY

Epoch

Sat, 04 Jul 2026 04:15:11 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

74.02°

Right Ascension

261.43°

Eccentricity

Calculating...

Argument of Perigee

50.38°

Period

118.41 min

Mean Motion

12.16 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

SL-8 DEB

Alternative Name

deb S3M

Type

Debris

Status

Space Junk

Owner

RVSN

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 21185U 91009AY  26185.17721782  .00000138  00000-0  14384-2 0  9997
2 21185  74.0222 261.4285 0204117  50.3849 336.4039 12.16141415568067

Source: Celestrak

Summary
Space debris, also known as space junk, encompasses all non-functional objects orbiting Earth such as defunct satellites, spent rocket stages, and fragments from collisions or disintegrations. Over time, this debris can accumulate and create an increasingly hazardous environment in orbit. Even tiny fragments, traveling at extremely high velocities, can inflict significant damage on operational satellites and spacecraft. If left unmanaged, the density of debris raises the risk of catastrophic collisions and further fragmentation, compounding the problem and threatening the safety and sustainability of space activities.
Physical Characteristics

Length

0

Diameter

0

Span

0

Dry Mass

0

Launch Mass

0

Shape

N/A

Radar Cross Section

0.117

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Unknown

Purpose

Unknown

Mission

Unknown

Manufacturer

Unknown

Life Expectancy

Unknown

Bus

Unknown

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Map
This tool will help you track the satellite's position and predict its upcoming passes over your location. Simply input the coordinates or click the geolocation button to get started.
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

Space Brief 8 Aug 2025

Space Brief 8 Aug 2025

Today's brief highlights significant shifts in military space spending due to the Golden Dome program, the U.S. Space Force's advancements in tactical satellite communications, and NASA's race to nuclear power in space.

X Report 26 Dec 2024

X Report 26 Dec 2024

Launch of 21 new Starlink satellites, featuring cell phone connectivity, and updates on NASA and SpaceX collaborative missions.

The Day Humanity First Touched an Asteroid

The Day Humanity First Touched an Asteroid

Twenty-four years ago, a spacecraft designed only to orbit made history with an improvised landing on asteroid Eros, marking humanitys first controlled touchdown on a small celestial body

The Kessler Syndrome

The Kessler Syndrome

The Kessler Syndrome threatens humanity's future in space as cascading satellite collisions create exponential debris growth. With 36,000+ tracked objects and recent incidents accelerating risks, we face a critical juncture: implement solutions now or potentially lose access to low Earth orbit forever.

X Report 23 Feb 2025

X Report 23 Feb 2025

SpaceX faces a setback with a Falcon 9 upper stage reentry issue, while NASA selects SpaceX for a new mission. Starlink expansions continue with multiple satellite launches.

X Report 20 Dec 2024

X Report 20 Dec 2024

SpaceX gears up for multiple significant missions while managing a Crew Dragon delay. Vast Space partners with SpaceX for ISS missions, and Lunar landers prepare for lift-offs.

Space Brief 2 Mar 2025

Space Brief 2 Mar 2025

Today's brief highlights the successful landing of a private moon mission by Firefly Aerospace, a new simulator for the Spanish Air and Space Force, and the anticipated launch by Europe's Ariane 6. Plus, our Satellite Spotlight features the COSMOS 2484.

X Report 25 May 2025

X Report 25 May 2025

SpaceX addresses the cause of its recent Starship Flight 8 explosion, while successfully launching 23 more Starlink satellites as it continues to expand its constellation.