SL-4 R/B (09048)

COSPAR: 1976-072B | Alt Name: Soyuz-U 26-958 Blok-I
DECAYED

Image
SL-4 R/B Satellite Image
Additional Sources
Launch Details

Launch Date

July 22, 1976

Launch Site

PLMSC

Launch Pad

LC43/3

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

09048

International Designator

1976-072B

Decay Date

7/30/1976

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U 26-958 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.

X Report 21 Apr 2025

X Report 21 Apr 2025

SpaceX launches its 32nd cargo mission to the ISS, and NRO marks a milestone with over 200 satellites deployed.

X Report 7 May 2025

X Report 7 May 2025

SpaceX achieves significant milestones with a successful Falcon 9 launch carrying 28 Starlink satellites and receives FAA approval for increased Starship launches, amidst challenges posed by India's new satellite regulations.

GOES-G | The Day a Weather Satellite Exploded Over the Atlantic

GOES-G | The Day a Weather Satellite Exploded Over the Atlantic

Forty years ago today, a Delta 3914 lifted off Cape Canaveral with a weather satellite the country could not afford to lose. Seventy-one seconds later, its main engine cut off. Ninety-one seconds in, the range safety officer pressed his button. The third domino of a brutal 1986 had fallen.

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.

Space Domain Awareness (SDA)

Space Domain Awareness (SDA)

The evolution from simply tracking objects in orbit to understanding the full strategic picture of who is doing what in space, and why

Space Brief 14 Mar 2025

Space Brief 14 Mar 2025

Today’s highlights include new defense initiatives in the U.S., potential strategic shifts in Europe, and the establishment of council to counter security threats.

Starlink V2 Flies on Starship in 2027, X Report 4 Mar 2026

Starlink V2 Flies on Starship in 2027, X Report 4 Mar 2026

Gwynne Shotwell confirms Starlink V2 launches on Starship in 2027. Ship 39 preps Starship Flight 12; Falcon 9 lofts its 600th Starlink of 2026.

X Report 5 Apr 2025

X Report 5 Apr 2025

SpaceX secures major U.S. military contracts, Fram2 concludes historic mission, and preparations for another Starlink launch.