SL-4 DEB (15639)

COSPAR: 1985-027D | Alt Name: Sensor cover
DECAYED

Image
SL-4 DEB Satellite Image
Additional Sources
Launch Details

Launch Date

April 3, 1985

Launch Pad

LC31

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

15639

International Designator

1985-027D

Decay Date

4/6/1985

Basic Satellite Info

Name

SL-4 DEB

Alternative Name

Sensor cover

Type

Debris

Status

Space Junk

Owner

GUKOS

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

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Sensor cover

Purpose

Unknown

Mission

Unknown

Manufacturer

TSSKB

Life Expectancy

Unknown

Bus

Zenit deb

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 22 Feb 2025

Space Brief 22 Feb 2025

Today's brief covers a reveal from the US Space Force of the X-37B space plane in orbit, a developing defense shakeup involving key military leaders, confirmation of advanced federated ICAM connections by the DoD, and SAAB's plan for a Euro defense coalition. Plus, we spotlight the BDSAT-2 CubeSat.

Space Brief 19 Nov 2025

Space Brief 19 Nov 2025

Today's Space Brief covers the latest developments in space debris detection, Ursa Major's defense push, and SpaceX's Starlink launch. Additionally, insights into microreactors for military bases, US Cyber Command updates, and gravitational wave discoveries are highlighted.

Space Brief 1 May 2025

Space Brief 1 May 2025

Today's space brief covers NASA's shift to private companies for astronaut rescue, EU's potential collaboration with SES for satellite services, and notable military contract allocations. Plus, a satellite spotlight on LEMUR-2-KADI.

Space Brief 24 Aug 2025

Space Brief 24 Aug 2025

Today's brief covers SpaceX's secretive military launch, advancements in nuclear fusion, and groundbreaking observations of dying stars and supernovae.

X Report 29 Jan 2025

X Report 29 Jan 2025

Key developments include political attention on SpaceX's ISS crew return and competition forecasts between SpaceX and ULA for national security missions.

NASA Tests Artemis 2 Fueling, Saudi Unveils DebriSolver Winners | KeepTrack Space Brief

NASA Tests Artemis 2 Fueling, Saudi Unveils DebriSolver Winners | KeepTrack Space Brief

NASA conducts critical Artemis 2 rocket fueling test. Saudi Space Agency announces global DebriSolver competition winners. SpaceX and Bezos push orbital data center plans.

X Report 14 Nov 2025

X Report 14 Nov 2025

SpaceX progresses on Starship testing while Rocket Lab delays its Neutron rocket debut, potentially impacting the competitive landscape in space launches.

Space Brief 28 Feb 2025

Space Brief 28 Feb 2025

Today's brief covers defense industry dynamics, advancements in quantum sensor technology, and geopolitical challenges impacting military space operations.