SL-4 R/B (19415)

COSPAR: 1988-073B | Alt Name: Soyuz-U No. 569 Blok-I
DECAYED

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

Launch Date

August 23, 1988

Launch Site

PLMSC

Launch Pad

LC41/1

Launch Vehicle

Soyuz-U

Orbital Elements

NORAD ID

19415

International Designator

1988-073B

Decay Date

8/25/1988

Basic Satellite Info

Name

SL-4 R/B

Alternative Name

Soyuz-U No. 569 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

36.39

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 Nov 2024

X Report 21 Nov 2024

SpaceX's Starship gains military attention, a feather-light achievement, and a busy week for Falcon 9.

108 Minutes That Changed Everything - and the 20-Year Echo That Followed

108 Minutes That Changed Everything - and the 20-Year Echo That Followed

On April 12, 1961, a 27-year-old Soviet pilot rode a modified ICBM into orbit and came back alive after 108 minutes. Exactly twenty years later, two Americans climbed aboard an untested spacecraft covered in 31,000 ceramic tiles and bet their lives that the math was right.

Space Brief 17 Sep 2024

Space Brief 17 Sep 2024

Today's Space Brief covers crucial satellite events including upcoming launches, military space developments, and exceptional celestial sightings.

X Report 18 Jan 2025

X Report 18 Jan 2025

SpaceX faces setbacks with Starship Flight 7 as FAA launches an investigation, while future transportation policies might impact SpaceX operations. Meanwhile, the Starlink constellation continues strong.

X Report 28 Apr 2025

X Report 28 Apr 2025

SpaceX marks a milestone with its 250th Starlink mission, continuing to expand its broadband satellite network.

Booster 20 Fires All 33 Engines in Record Test | KeepTrack Space Brief

Booster 20 Fires All 33 Engines in Record Test | KeepTrack Space Brief

SpaceX completed a full 33-engine static fire on Booster 20, the longest duration test to date. The milestone clears a major hurdle before the next Starship flight attempt.

X Report 29 Sep 2025

X Report 29 Sep 2025

In today's update, SpaceX successfully launched 28 Starlink satellites from Vandenberg, while Italy grapples with its satellite strategy amid rising reliance on Starlink services.

Space Brief 21 Aug 2025

Space Brief 21 Aug 2025

Today's brief covers the launch of the X-37B, cutting-edge quantum navigation systems, and the future of space-based military technology. Discover the role of SpaceX and the advancements in inertial navigation.