COSMOS 397 DEB (18521)

COSPAR: 1971-015DF | Alt Name: deb Kosmos-397
DECAYED

Image
COSMOS 397 DEB Satellite Image
Additional Sources
Launch Details

Launch Date

February 25, 1971

Launch Pad

LC90/20

Launch Vehicle

Tsiklon-2

Orbital Elements

NORAD ID

18521

International Designator

1971-015DF

Decay Date

11/6/1988

Basic Satellite Info

Name

COSMOS 397 DEB

Alternative Name

deb Kosmos-397

Type

Debris

Status

Space Junk

Owner

PKO

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

0

Diameter

0

Span

0

Dry Mass

0

Launch Mass

0

Shape

N/A

Radar Cross Section

0.0034

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.

GPS III SV10 | The Last of Its Kind, and the First of What Comes Next

GPS III SV10 | The Last of Its Kind, and the First of What Comes Next

On April 21, 2026, the tenth and final GPS Block III satellite reached medium Earth orbit aboard a SpaceX Falcon 9. Named for Hedy Lamarr, the actress whose 1942 frequency-hopping patent underpins modern GPS, SV10 closes a procurement that took eight years to deliver hardware and opens the optical-crosslink era that will define the constellation's next decade.

X Report 26 Nov 2024

X Report 26 Nov 2024

SpaceX sets launch milestones with quick turnarounds and new Starlink deployments, while eyeing rapid Starship expansions next year.

Space Domain Awareness (SDA)

Space Domain Awareness (SDA)

The evolution from simply tracking objects in orbit to understanding the full strategic picture of who is doing what in space, and why

Space Brief 20 Feb 2025

Space Brief 20 Feb 2025

Expansion of national security capabilities with new services, shifts in Pentagon priorities, challenges in zero trust compliance, and more.

Space Brief 20 Nov 2024

Space Brief 20 Nov 2024

Today's highlights include the U.S. military's satellite initiative facing delays, Senate inquiries into high-profile calls, and an update on Pentagon's UFO investigations. Notable mentions also cover Morocco's defense sector ambitions.

X Report 16 Jul 2025

X Report 16 Jul 2025

SpaceX successfully launched another batch of Starlink satellites while marking a significant milestone with the 500th Falcon 9 mission. Additionally, the company is preparing for further testing of its Starship system and has begun collaborating with Amazon on their Project Kuiper constellation.

Space Brief 30 Aug 2025

Space Brief 30 Aug 2025

Today's briefing covers the latest satellite communications advancements, a secretive military launch by SpaceX, and new space defense organizational structures.

Space Brief 6 Jun 2025

Space Brief 6 Jun 2025

Today's space news features significant discussions on the funding of Space Force, advancements in hypersonic technology, and the potential impacts of spectrum auction plans on border defense systems.