SL-6 R/B(1) (07781)

COSPAR: 1975-036B | Alt Name: Molniya-M No. 064 Blok-I
DECAYED

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

Launch Date

April 29, 1975

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Molniya 8K78M

Orbital Elements

NORAD ID

07781

International Designator

1975-036B

Decay Date

5/29/1975

Basic Satellite Info

Name

SL-6 R/B(1)

Alternative Name

Molniya-M No. 064 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

Unknown

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.

Falcon 9 Booster B1067 Reaches 35th Flight Record | KeepTrack Space Brief

Falcon 9 Booster B1067 Reaches 35th Flight Record | KeepTrack Space Brief

Booster B1067 sets new Falcon 9 reuse record with 35th successful flight, deploying 29 Starlink satellites. Quantum Space pursues public markets via SPAC.

Space Brief 2 Dec 2025

Space Brief 2 Dec 2025

Today's brief covers China's classified Shijian-28 satellite launch, AI-designed spacecraft records, and upcoming global launch activities.

Space Brief 31 Mar 2025

Space Brief 31 Mar 2025

Today's brief covers significant space events, including milestone national security certifications for ULA Vulcan and Rocket Lab, SpaceX's groundbreaking polar orbit mission, and a failed launch attempt by Isar Aerospace.

X Report 18 Sep 2025

X Report 18 Sep 2025

SpaceX gears up for a busy week with new Starship testing and enhanced Starlink capabilities on the horizon.

Space Brief 8 Apr 2025

Space Brief 8 Apr 2025

Key highlights include the launch of a Navy SEAL astronaut to the ISS, multi-billion dollar contracts awarded by the US Space Force, advancements in secure GPS technology, and a strategic ISR arrangement.

Space Brief 26 Oct 2025

Space Brief 26 Oct 2025

Today's brief covers a new Space Force contract for advanced tracking systems, innovative debris removal strategies, pivotal new satellite launches, and significant updates in air quality tracking from orbit.

Space Brief 1 Oct 2025

Space Brief 1 Oct 2025

Today's brief covers an increase in Chinese satellite launches, the operational status of the Space Force's ATLAS software, and a significant fundraising event in the defense sector.

X Report 25 Oct 2025

X Report 25 Oct 2025

SpaceX prepares for a record-setting launch of Starlink satellites, while Iridium faces challenges against SpaceX's expanding services.