SL-6 R/B(2) (16889)

COSPAR: 1986-057D | Alt Name: Blok-ML
DECAYED

Image
SL-6 R/B(2) Satellite Image
Additional Sources
Launch Details

Launch Date

July 30, 1986

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Molniya 8K78M

Orbital Elements

NORAD ID

16889

International Designator

1986-057D

Decay Date

10/14/1996

Basic Satellite Info

Name

SL-6 R/B(2)

Alternative Name

Blok-ML

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

3.3

Diameter

2.3

Span

3.3

Dry Mass

900

Launch Mass

4500

Shape

Cyl

Radar Cross Section

7.6546

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Blok-ML

Purpose

Unknown

Mission

Unknown

Manufacturer

NPOE

Life Expectancy

Unknown

Bus

Blok-L

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 17 Jan 2025

X Report 17 Jan 2025

SpaceX marks another milestone and setback with Starship Flight 7, achieving a successful booster catch but losing the upper stage during ascent.

SpaceX Buys Cursor AI for $60B After IPO, X Report 17 Jun 2026

SpaceX Buys Cursor AI for $60B After IPO, X Report 17 Jun 2026

SpaceX acquires Cursor AI maker Anysphere for $60B in its first post-IPO deal, as Falcon 9 lofts 3 Block 2 BlueBird satellites for AST SpaceMobile.

Space Brief 7 Sep 2025

Space Brief 7 Sep 2025

Today's Space Brief covers China’s latest satellite launches, leadership changes in the U.S. Space Force, insights from hyperspectral imagery on an Iranian facility, SpaceX's Starlink mission, and more.

SpaceX and xAI Tapped for Pentagon's $100M Drone Contest | KeepTrack X Report

SpaceX and xAI Tapped for Pentagon's $100M Drone Contest | KeepTrack X Report

Pentagon selects SpaceX and xAI for $100M autonomous drone competition. Two Falcon 9 rockets launch Starlink sats from California and Florida. 11,215 total Starlink satellites launched.

ESA Proba-3 Spacecraft Goes Silent, Formation Mission Halted | KeepTrack Space Brief

ESA Proba-3 Spacecraft Goes Silent, Formation Mission Halted | KeepTrack Space Brief

ESA's Proba-3 spacecraft lost contact last month following on-orbit anomaly. Mission requires both satellites in precise formation for solar corona science. Recovery status uncertain.

SpaceX Wins $178.5M Space Force Missile Tracking Contract | KeepTrack Space Brief

SpaceX Wins $178.5M Space Force Missile Tracking Contract | KeepTrack Space Brief

SpaceX awarded $178.5M Space Force contract for missile tracking satellite launches beginning 2027. Pentagon also extends GPS modernization support with $45M Raytheon order.

Space Brief 5 Feb 2025

Space Brief 5 Feb 2025

Today's briefing covers strategic military developments including missile defense proposals and board realignments, intertwined with rising space defense exports and autonomous launcher progress.

X Report 30 Oct 2025

X Report 30 Oct 2025

SpaceX continues to ramp up its operations with the launch of 29 more Starlink satellites, while significant upgrades at its Starbase facility signify ambitious future plans.