SL-6 R/B(1) (20708)

COSPAR: 1990-064B | Alt Name: Molniya-M 17-572 Blok-I
DECAYED

Image
SL-6 R/B(1) Satellite Image
Additional Sources
Launch Details

Launch Date

July 25, 1990

Launch Site

PLMSC

Launch Pad

LC16/2

Launch Vehicle

Molniya 8K78M-PVB

Orbital Elements

NORAD ID

20708

International Designator

1990-064B

Decay Date

8/22/1990

Basic Satellite Info

Name

SL-6 R/B(1)

Alternative Name

Molniya-M 17-572 Blok-I

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics

Length

6.7

Diameter

2.7

Span

6.7

Dry Mass

2350

Launch Mass

2350

Shape

Cyl

Radar Cross Section

0.31

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S510

Purpose

Unknown

Mission

Unknown

Manufacturer

PROG

Life Expectancy

Unknown

Bus

Blok-I

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.

X Report 6 Sep 2025

X Report 6 Sep 2025

SpaceX successfully launched 28 Starlink satellites, marking a significant milestone with its 500th Falcon rocket landing. Meanwhile, the Starship program reflects on its journey through ten flights, and competition with Amazon's Project Kuiper heats up as JetBlue opts for their in-flight Wi-Fi service.

Space Brief 24 Apr 2025

Space Brief 24 Apr 2025

Today's brief covers South Korea's fourth spy satellite launch, potential changes in drone deployment strategies by the US Air Force, and the largest-ever spectrum-sharing demonstration set by the Pentagon.

X Report 12 May 2025

X Report 12 May 2025

SpaceX prepares for its 100th Falcon 9 launch from Kennedy Space Center while facing a scrubbed attempt of the latest Starlink deployment.

The Day America Sent Two Secrets to the Sky

The Day America Sent Two Secrets to the Sky

Sixty-five years ago, America launched two very different space missions within hours of each other - one broadcast live to a fascinated nation, the other quietly reaching orbit from a fog-shrouded California launchpad while no one was watching

Space Brief 4 Aug 2025

Space Brief 4 Aug 2025

Key developments in space today include significant satellite launches, advancements in space technology, and an exciting crewed suborbital flight. Highlights cover China's satellite internet progress, a promising innovation for solar cells, and recent SpaceX and Blue Origin activities.

SpaceX Files $18.7B IPO as Starship V3 Debuts | KeepTrack X Report

SpaceX Files $18.7B IPO as Starship V3 Debuts | KeepTrack X Report

SpaceX's S-1 reveals $18.7B in revenue as Starship Flight 12 debuts Block 3 hardware from Pad 2 on May 21, 2026.

X Report 13 Dec 2024

X Report 13 Dec 2024

SpaceX ramps up Starship preparations in Florida while California prepares for another Starlink launch.

Blue Origin Targets New Glenn Return Before Year-End After Pad Explosion | KeepTrack Space Brief

Blue Origin Targets New Glenn Return Before Year-End After Pad Explosion | KeepTrack Space Brief

Blue Origin aiming for 2nd New Glenn launch by end of 2026 after LC-36 pad explosion at Cape Canaveral. Repair timeline still unclear; mission critical for national security payloads.