SL-6 R/B(1) (16394)

COSPAR: 1985-117B | Alt Name: Molniya-M 56-680 Blok-I

DECAYED

Image

Additional Sources

Launch Details

Launch Date

December 24, 1985

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Molniya 8K78M

Orbital Elements

NORAD ID

16394

International Designator

1985-117B

Decay Date

1/30/1986

Basic Satellite Info

Name

SL-6 R/B(1)

Alternative Name

Molniya-M 56-680 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

9.96

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.

Besxar Semiconductor Pods Launch on Starlink 10-50 | KeepTrack Space Brief

SpaceX Falcon 9 launches Starlink 10-50 with two Besxar semiconductor manufacturing test pods. In-space fabrication experiment explores cost reduction for commercial payloads.

X Report 7 Sep 2025

SpaceX launches 24 Starlink satellites, pushing its 2025 total beyond 2,000, while facing community pushback in Florida for its Starship operations.

NASA OIG Flags Starship Artemis Gaps as Falcon 9 Eyes 8-Launch Week | KeepTrack X Report

NASA's Inspector General warns of crew survival analysis gaps in Starship lunar lander program as Falcon 9 prepares to lead 8 global launches this week.

Rocket Lab Acquires 66-Satellite Iridium Constellation | KeepTrack Space Brief

Rocket Lab to acquire Iridium's 66-satellite LEO constellation for end-to-end vertical integration. Deal includes spacecraft manufacturing, launch, and on-orbit operations control.

Satellites by Country

Explore a comprehensive breakdown of satellite counts by country, detailing the USA, Russia, China, and others.

Space Brief 31 Jan 2025

Today's brief covers advancements in satellite technology initiatives by the U.S. Space Force, geopolitical implications in maritime domains, and Sweden's significant military aid package. Additionally, we spotlight a historical satellite with modern implications.

Iran Strikes UAE and Saudi Targets, Space Force Opens Tracking to Commercial Firms | KeepTrack Space Brief

Iran launches drones and missiles at UAE and Saudi targets. Space Force opens secretive tracking data to commercial firms. Falcon 9 breakup linked to lithium pollution in upper atmosphere.

X Report 26 Mar 2025

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