RESURS F-12 DEB (21645)

COSPAR: 1991-052E | Alt Name: KDU
DECAYED

Image
RESURS F-12 DEB Satellite Image
Additional Sources
Launch Details

Launch Date

July 23, 1991

Launch Site

PLMSC

Launch Pad

LC43/3

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

21645

International Designator

1991-052E

Decay Date

8/28/1991

Basic Satellite Info

Name

RESURS F-12 DEB

Alternative Name

KDU

Type

Debris

Status

Space Junk

Owner

UNKSR

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

1

Diameter

0.4

Span

1

Dry Mass

140

Launch Mass

425

Shape

Frust

Radar Cross Section

0.07

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

KDU

Purpose

Unknown

Mission

Unknown

Manufacturer

TSSKB

Life Expectancy

Unknown

Bus

Zenit KDU

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.

Space Brief 3 Nov 2025

Space Brief 3 Nov 2025

Highlighting India's significant military satellite launch, real-time satellite tracking developments in Europe, SpaceX's new rideshare mission, and more space industry news.

X Report 24 Nov 2024

X Report 24 Nov 2024

SpaceX cancels Texas land-swap deal amid growing Starship presence and launches 20 Starlink satellites using the 400th Falcon 9 rocket.

Jonathan's Space Report

Jonathan's Space Report

Jonathan's Space Report is a comprehensive resource for space launch and satellite data, compiled by astrophysicist Dr. Jonathan McDowell.

Space Brief 1 Oct 2025

Space Brief 1 Oct 2025

Today's brief covers an increase in Chinese satellite launches, the operational status of the Space Force's ATLAS software, and a significant fundraising event in the defense sector.

Space Brief 7 Nov 2024

Space Brief 7 Nov 2024

Today's Space Brief covers major upcoming launches from SpaceX, US military missile tests, and developments in Virgin Galactic's fleet expansion. Stay informed on key satellite events and launch updates.

Space Brief 2 Feb 2025

Space Brief 2 Feb 2025

Today's highlights include new satellite launches by SpaceX, technical hiccups for an Indian navigation satellite, and insights into the future of satellite servicing.

Space Brief 22 Aug 2025

Space Brief 22 Aug 2025

SpaceX's X-37B spaceplane launch, featuring advanced tech, highlights today’s space events. The launch of the first reprogrammable navigation satellite by the US Space Force is another significant milestone.

Starship V3 Scrubbed & SpaceX Files $18.7B IPO | KeepTrack X Report

Starship V3 Scrubbed & SpaceX Files $18.7B IPO | KeepTrack X Report

SpaceX scrubbed Starship Flight 12's V3 debut due to a hydraulic pin fault, then filed an $18.7B IPO S-1 targeting Nasdaq under ticker SPCX.