COSMOS 903 DEB (10946)

COSPAR: 1977-027E | Alt Name: deb Kosmos-903

DECAYED

Image

Additional Sources

Launch Details

Launch Date

April 11, 1977

Launch Site

PLMSC

Launch Pad

LC43/3

Launch Vehicle

Molniya 8K78M

Orbital Elements

NORAD ID

10946

International Designator

1977-027E

Decay Date

6/24/2005

Basic Satellite Info

Name

COSMOS 903 DEB

Alternative Name

deb Kosmos-903

Type

Debris

Status

Space Junk

Owner

PVO

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

0.5376

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

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

SpaceX Plans Three Launches This Week Including ISRO Rideshare | KeepTrack X Report

SpaceX targets three launches this week including a rideshare mission with India's ISRO into Sun-Synchronous Orbit. Starlink network continues expanding with ongoing satellite deployments.

Space Brief 15 Aug 2025

Discover the latest in space news with the ULA's recent launch for the US Space Force, significant developments in radar tracking at high altitudes, and impactful policy changes involving military space missions.

New Glenn Upper Stage Fails, BlueBird 7 Lost, Space Brief 20 Apr 2026

New Glenn's upper stage malfunctioned April 19, stranding AST SpaceMobile's BlueBird 7; the satellite is lost. Vulcan may fly without solid boosters.

ESA Proba-3 Spacecraft Goes Silent, Formation Mission Halted | KeepTrack Space Brief

ESA's Proba-3 spacecraft lost contact last month following on-orbit anomaly. Mission requires both satellites in precise formation for solar corona science. Recovery status uncertain.

SpinLaunch's Kinetic Launch System

How a California startup's massive centrifuge could transform space access by eliminating rocket fuel, reducing costs by 70%, and enabling daily satellite launches - if it can overcome the physics of scaling from suborbital tests to orbital reality

GOES-G | The Day a Weather Satellite Exploded Over the Atlantic

Forty years ago today, a Delta 3914 lifted off Cape Canaveral with a weather satellite the country could not afford to lose. Seventy-one seconds later, its main engine cut off. Ninety-one seconds in, the range safety officer pressed his button. The third domino of a brutal 1986 had fallen.

X Report 15 Dec 2025

SpaceX made significant strides in satellite deployment with successful launches of 27 and 29 Starlink satellites, marking both a milestone in landings and ongoing expansion of the Starlink constellation.

X Report 5 Jun 2025

SpaceX celebrates significant milestones with its 500th Falcon launch and the continued expansion of Starlink connectivity.