SL-12 R/B (20354)

COSPAR: 1989-096C | Alt Name: Blok D-1 No. 10L
DECAYED

Image
SL-12 R/B Satellite Image
Additional Sources
Launch Details

Launch Date

December 1, 1989

Launch Pad

LC200/40

Launch Vehicle

Proton-K/D-1

Orbital Elements

NORAD ID

20354

International Designator

1989-096C

Decay Date

7/25/1999

Basic Satellite Info

Name

SL-12 R/B

Alternative Name

Blok D-1 No. 10L

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

5.8

Diameter

4.1

Span

5.8

Dry Mass

1925

Launch Mass

12600

Shape

Cyl

Radar Cross Section

22.2

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S824M No. 10L

Purpose

Unknown

Mission

Unknown

Manufacturer

NPOE

Life Expectancy

Unknown

Bus

Blok D

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 16 Nov 2025

Space Brief 16 Nov 2025

Today's highlights include SpaceX's record-breaking Falcon 9 launches, Dream Chaser's testing success, and Blue Origin's latest New Glenn achievements.

Space Brief 18 Oct 2024

Space Brief 18 Oct 2024

Explore exciting updates on satellite reentries impacting Earth's atmosphere, China's ambitious space exploration plans, and the latest advancements in the search for extraterrestrial life.

X Report 15 May 2025

X Report 15 May 2025

SpaceX successfully launched 28 Starlink satellites from Cape Canaveral, while Starship prepares for its ninth test flight next week.

X Report 5 Aug 2025

X Report 5 Aug 2025

SpaceX successfully launched 28 Starlink satellites while returning to form with Starship testing at Starbase. Meanwhile, preparations for upcoming launches are underway.

X Report 2 Apr 2025

X Report 2 Apr 2025

SpaceX's Fram2 mission marks a historic first in polar orbit travel, while DARPA unexpectedly detects Falcon 9 reentry using atmospheric listening.

SpaceX Eyes $1.75T Valuation in $75B IPO | KeepTrack X Report

SpaceX Eyes $1.75T Valuation in $75B IPO | KeepTrack X Report

SpaceX targets a $75B IPO valuing the company at $1.75T, as 50+ new Starlink satellites reach orbit via dual coast launches.

Space Brief 17 Dec 2025

Space Brief 17 Dec 2025

Today's stories cover Rocket Lab's innovative DiskSat launch, Digantara's expansion to missile defense, and DARPA's satellite surveillance network expansion, among other updates in military and satellite technology.

Space Brief 23 Jun 2025

Space Brief 23 Jun 2025

Significant advancements and launches in space: NASA's hypersonic sensor breakthrough, ChinaSat-9C's launch, and SpaceX's resilient Falcon 9 operations.