SL-8 DEB (09994)

COSPAR: 1975-109J | Alt Name: deb Kosmos-781

DECAYED

Image

Additional Sources

Launch Details

Launch Date

November 21, 1975

Launch Site

PLMSC

Launch Pad

LC132/1

Launch Vehicle

Kosmos 11K65M

Orbital Elements

NORAD ID

09994

International Designator

1975-109J

Decay Date

2/11/1978

Basic Satellite Info

Name

SL-8 DEB

Alternative Name

deb Kosmos-781

Type

Debris

Status

Space Junk

Owner

GRU

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

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

0.0039

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Tselina-O part

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

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

The Satellite That Found 22 Photons and Changed Astronomy

On April 27, 1961, a Scout rocket lifted a 37-kilogram NASA satellite into orbit from Wallops Island carrying the first serious instrument for detecting cosmic gamma rays. Explorer 11 operated for seven months before its tape recorder failed. In that time it registered 22 gamma-ray photons - a pitiful number by modern standards, but enough to launch an entire branch of astronomy.

X Report 24 Jun 2025

SpaceX successfully launched the Transporter-14 mission, adding multiple payloads, including Canadian satellites and a memorial capsule, while Starlink expands its services in Vietnam and enhances T-Mobile's reach.

Space Brief 11 Jun 2025

Today's Space Brief covers a major partnership in space tech distribution, China's orbital refueling preparations under U.S. scrutiny, recent U.S. defense budget reveals, and an exciting hyperspectral imagery release from Xplore.

Space Brief 28 Jun 2025

Today's brief covers a Pentagon review of satellite launch options, Kongsberg's completed maritime satellite network, York's new satellite launch, DARPA's project cancellation, and more.

Space Brief 20 May 2025

Today's brief covers potential roles for commercial satellites in missile defense, SpaceX's new launch site plans at Vandenberg, and partnerships for space nuclear propulsion. Discover updates on military space projects and international defense agreements.

X Report 8 Dec 2025

SpaceX faces weather challenges as it scrubs the launch of its 3,000th Starlink satellite. Meanwhile, Elon Musk discusses advancing to a Type II civilization in an engaging social media post.

X Report 7 Apr 2025

SpaceX prepares for another Starlink launch today, following a successful deployment over the weekend from Florida's Space Coast.

SpaceX Resumes Starlink Deployments After Satellite Issues | KeepTrack X Report

SpaceX launches 29 Starlink satellites in first deployment since recent satellite issues. Falcon 9 also delivers Italy's COSMO-SkyMed CSG-FM3 from Vandenberg. Starship plans solidified for 2026.