SL-8 DEB (21178)

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

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

21178

International Designator

1991-009AR

Epoch

Sat, 04 Jul 2026 04:53:11 GMT

Apogee

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Perigee

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Inclination

74.10°

Right Ascension

335.54°

Eccentricity

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Argument of Perigee

317.49°

Period

118.39 min

Mean Motion

12.16 rev/day

Latitude

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Longitude

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Altitude

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Velocity

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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 21178U 91009AR  26185.20360260 -.00000006  00000-0  86935-4 0  9991

2 21178  74.0978 335.5368 0140913 317.4940 216.6943 12.16338912571421

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

0.224

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

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Latitude

Longitude

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