SL-6 R/B(2) (09850)

COSPAR: 1977-010E | Alt Name: Blok-L

DECAYED

Image

Additional Sources

Launch Details

Launch Date

February 11, 1977

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Molniya 8K78M

Orbital Elements

NORAD ID

09850

International Designator

1977-010E

Decay Date

12/11/2019

Explore in the Catalog

Blok-L bus USSR satellites Rocket Bodies

Basic Satellite Info

Name

SL-6 R/B(2)

Alternative Name

Blok-L

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

Diameter

2.5

Span

Dry Mass

1000

Launch Mass

4500

Shape

Cyl

Radar Cross Section

7.6075

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Blok-L

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.

Space Brief 11 Apr 2025

Today's brief covers Millennium's milestone in missile defense, new satellite jammer for Space Force, budget increases for defense, delays in MEO satellite contracts, and potential impacts of Trump's latest order on Pentagon programs.

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 27 Dec 2024

SpaceX rounds off a record-setting year with over 130 launches, achieving new milestones in Starship development and Starlink expansion.

X Report 19 Feb 2025

SpaceX achieves a new milestone with a Falcon 9 landing near The Bahamas, closely following Rocket Lab's successful satellite launch.

Van Allen Probe A Reenters March 10 After 14 Years | KeepTrack Space Brief

NASA's Van Allen Probe A (1,300 lbs) reenters today after 14 years studying Earth's radiation belts. Most debris will burn up; ocean impact statistically likely.

X Report 26 Feb 2025

SpaceX progresses with Starship Flight 8 preparations, completes investigation into Flight 7 mishap, and prepares for upcoming launches.

Space Brief 21 Jul 2025

Today's brief covers SpaceX's latest Starlink launch, fascinating exoplanet discoveries, and strategic lunar developments by China and South Korea.

Space Brief 5 Sep 2025

Today's Space Brief delves into key military developments in space, including the Space Force's pioneering officer training and innovative small satellite communication strategies.