COSMOS 721 DEB (07721)

COSPAR: 1975-020F | Alt Name: Kapsula Kosmosa-721

DECAYED

Image

Additional Sources

Launch Details

Launch Date

March 26, 1975

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

07721

International Designator

1975-020F

Decay Date

4/8/1975

Basic Satellite Info

Name

COSMOS 721 DEB

Alternative Name

Kapsula Kosmosa-721

Type

Debris

Status

Space Junk

Owner

TSSKB

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

1.8

Span

1.8

Dry Mass

630

Launch Mass

630

Shape

Cyl

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Nauka 5KSA No. 2

Purpose

Unknown

Mission

Unknown

Manufacturer

TSSKB

Life Expectancy

Unknown

Bus

Nauka

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 29 Oct 2024

Today's space brief covers an impressive SpaceX launch record, China's upcoming crew mission to its space station, an Intelsat 33e debris observation, and more. Key topics include SpaceX's Starship events, ESA's Hera mission updates, and Boeing's potential space division sale.

X Report 4 Dec 2025

SpaceX successfully launched another batch of Starlink satellites and received approval for a new Starship launch site, while facing challenges with crew assignments on upcoming missions.

Starlink Hits 10,000 Satellites in Orbit, X Report 17 Mar 2026

How many Starlink satellites are in orbit in 2026? SpaceX passed 10,000 after the Starlink 17-24 launch, with 10,020 in orbit and 11,529 launched.

Space Brief 30 Mar 2025

Today's highlights include Rocket Lab joining the US Space Force's national security launch program, SpaceX's upcoming Starlink deployment, China's successful EVA, and intriguing science aboard SpaceX's Fram2 mission.

X Report 22 Nov 2025

Major challenges emerged with SpaceX's next-generation Starship booster testing, while Starlink deployments continued with successful launches.

X Report 26 Mar 2025

SpaceX's Starlink dish offers gigabit speeds, boosting competitiveness; NRO taps SpaceX for satellite launches, expanding spy satellite network.

Space Brief 30 Jan 2025

Today's Space Brief covers key developments including U.S. Space Force tech accelerator, SpaceX veterans' startup funding, ULA's expected dominance in national security missions, and new satellite activity.

Reentry

What happens when space objects come home: the fiery physics of returning from orbit and why predicting where debris lands is so difficult