SL-8 DEB (21255)

COSPAR: 1990-111C | Alt Name: deb Kosmos-2112

Image

Additional Sources

Launch Details

Launch Date

December 10, 1990

Launch Site

PLMSC

Launch Pad

LC133/3

Launch Vehicle

Kosmos 11K65M

Orbital Elements

NORAD ID

21255

International Designator

1990-111C

Epoch

Sat, 04 Jul 2026 05:53:50 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

74.04°

Right Ascension

4.84°

Eccentricity

Calculating...

Argument of Perigee

148.31°

Period

99.16 min

Mean Motion

14.52 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot

3D Visualization

Basic Satellite Info

Name

SL-8 DEB

Alternative Name

deb Kosmos-2112

Type

Debris

Status

Space Junk

Owner

UNKS

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 21255U 90111C   26185.24572574  .00001527  00000-0  38295-3 0  9990

2 21255  74.0351   4.8361 0012497 148.3101  28.8488 14.52185882868071

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

Diameter

Span

Dry Mass

Launch Mass

Shape

N/A

Radar Cross Section

0.0103

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Strela-2M debris 1

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.

Latitude

Longitude

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.

When Will SpaceX Go Public?

As SpaceX continues to make groundbreaking advancements in the space industry, investors are eagerly anticipating the company's potential IPO. Learn about the factors influencing SpaceX's decision to go public and the estimated timeline for this highly anticipated event.

Planet Delays Iran Imagery 14 Days Amid Regional Conflict | KeepTrack Space Brief

Planet Labs institutes 14-day delay on imagery covering Iran and Gulf States. Commercial remote sensing faces new operational security pressures as conflict escalates.

Apophis 2029 Flyby: ESA-JAXA Joint Mission Locked In | KeepTrack Space Brief

ESA and JAXA finalize collaboration for asteroid Apophis 2029 flyby at 32,000 km—closer than geostationary orbit. Historic near-Earth encounter being heavily observed.

Space Brief 1 Aug 2025

Today's Space Brief covers a crucial weather data decision by the U.S. Defense Department, an innovative power supply for aerospace systems, advancements in satellite link technology, and Norway's maritime surveillance. AI/ML tools for airspace management and concerns about defense testing capabilities are also highlighted.

CelesTrak.org

An in-depth look at CelesTrak, the leading non-profit provider of orbital element sets and collision assessment tools, trusted by space professionals worldwide.

X Report 28 Aug 2025

SpaceX continues to break records with the Falcon 9's 30th flight while Starship's successful test flight propels the program forward after recent challenges.

Space Brief 29 May 2025

Today's brief covers a Japanese military satellite launch, new GPS satellite orders by the Space Force, and a Moog propulsion system contract, among other notable developments.

Space Brief 11 Apr 2025

Today's brief covers Millennium's milestone in missile defense, new satellite jammer for Space Force, budget increases for defense, delays in MEO satellite contracts, and potential impacts of Trump's latest order on Pentagon programs.