SL-6 R/B(2) (07586)

COSPAR: 1974-102D | Alt Name: Blok-L
DECAYED

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

Launch Date

December 21, 1974

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Molniya 8K78M

Orbital Elements

NORAD ID

07586

International Designator

1974-102D

Decay Date

1/5/1989

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

3.3

Diameter

2.4

Span

3.3

Dry Mass

1000

Launch Mass

4500

Shape

Cyl

Radar Cross Section

8.33

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 25 Oct 2025

Space Brief 25 Oct 2025

Today's brief covers significant growth forecasts for global defense satellite communications, the integration of hypersonic missiles, cyber authority expansion in the Army, and more pivotal military developments.

Reentry

Reentry

What happens when space objects come home: the fiery physics of returning from orbit and why predicting where debris lands is so difficult

X Report 1 Feb 2025

X Report 1 Feb 2025

Exciting SpaceX updates include the arrival of Athena moon lander, SPHEREx telescope's upcoming launch, and SpaceX's GigaBay development.

NRO Adds 3 New Partners to Commercial Imaging Program | KeepTrack Space Brief

NRO Adds 3 New Partners to Commercial Imaging Program | KeepTrack Space Brief

NRO expands commercial imaging with HEO, SatVu, and Sierra Nevada. ChatGPT rolls out to 3 million military users via GenAI.mil. C-130J deliveries paused.

Lagrange Points

Lagrange Points

Five spots in the Earth-Sun system where the gravitational tug of two massive bodies and the pull of circular motion all cancel out, creating gravitational parking spaces where spacecraft can sit for decades with almost no fuel.

Earthquake Sensors Repurposed to Track Space Debris Reentry | KeepTrack Space Brief

Earthquake Sensors Repurposed to Track Space Debris Reentry | KeepTrack Space Brief

Scientists use earthquake sensors to track space debris reentry via sonic boom detection. SpaceX launches 25 Starlink satellites in seventh mission of 2026. NASA and DOE partner for lunar nuclear power.

X Report 24 Sep 2025

X Report 24 Sep 2025

SpaceX prepares for the launch of significant NASA and NOAA missions, while Starship's 11th test flight edges closer.

SpaceX Acquires xAI, Starlink Bypasses Iran Internet Blackouts | KeepTrack Space Brief

SpaceX Acquires xAI, Starlink Bypasses Iran Internet Blackouts | KeepTrack Space Brief

SpaceX acquires xAI to develop orbital data centers. Starlink terminals bypass Iran's government internet blackouts. Blue Origin escalates defense procurement criticism.