SL-4 R/B (07618)

COSPAR: 1975-005B | Alt Name: Voskhod 31-775 Blok-I
DECAYED

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

Launch Date

January 23, 1975

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Voskhod 11A57

Orbital Elements

NORAD ID

07618

International Designator

1975-005B

Decay Date

2/3/1975

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Voskhod 31-775 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

11A57I

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 16 Apr 2025

X Report 16 Apr 2025

SpaceX gears up for another busy week with a Falcon 9 launch to the ISS while Vast Space expands its Haven-1 payload roster.

X Report 26 Nov 2024

X Report 26 Nov 2024

SpaceX sets launch milestones with quick turnarounds and new Starlink deployments, while eyeing rapid Starship expansions next year.

X Report 17 Jan 2025

X Report 17 Jan 2025

SpaceX marks another milestone and setback with Starship Flight 7, achieving a successful booster catch but losing the upper stage during ascent.

X Report 30 Apr 2025

X Report 30 Apr 2025

SpaceX achieves a remarkable milestone with its 50th Falcon 9 launch of 2025, while Starlink continues to expand, facing competition from China's megaconstellation efforts.

SpaceX Wins $4.16B Space Force Contract, X Report 3 Jun 2026

SpaceX Wins $4.16B Space Force Contract, X Report 3 Jun 2026

SpaceX wins a $4.16 billion Space Force satellite contract to track airborne threats worldwide, while dual-pad launches add 53 Starlink satellites.

X Report 9 Apr 2025

X Report 9 Apr 2025

SpaceX makes strides with new GPS and Starlink launches while securing major U.S. government contracts.

Starship V3 Static Fire Ignites 33 Engines, X Report 15 Apr 2026

Starship V3 Static Fire Ignites 33 Engines, X Report 15 Apr 2026

SpaceX fired all 33 Raptor 3 engines in the Starship V3 static fire at Starbase, clearing Flight 12. Plus 1,000 Starlink satellites launched in 2026.

Space Force Halts All Vulcan Missions Over Solid Booster Issue | KeepTrack Space Brief

Space Force Halts All Vulcan Missions Over Solid Booster Issue | KeepTrack Space Brief

Space Force suspends all Vulcan launches pending solid rocket booster investigation. Rocket Lab scrubs HASTE hypersonic vehicle launch. Military space funding hits record highs.