SL-12 R/B(2) (11568)

COSPAR: 1975-123F | Alt Name: Blok DM No. 3L

Image
SL-12 R/B(2) Satellite Image
Additional Sources
Launch Details

Launch Date

December 22, 1975

Launch Pad

LC81/24

Launch Vehicle

Proton-K/DM

Orbital Elements

NORAD ID

11568

International Designator

1975-123F

Epoch

Sat, 04 Jul 2026 04:50:40 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

2.50°

Right Ascension

263.38°

Eccentricity

Calculating...

Argument of Perigee

218.92°

Period

1432.66 min

Mean Motion

1.01 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

SL-12 R/B(2)

Alternative Name

Blok DM No. 3L

Type

Rocket Body

Status

Space Junk

Owner

RVSN

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 11568U 75123F   26185.20185797 -.00000123  00000-0  00000-0 0  9997
2 11568   2.5014 263.3808 0014441 218.9153 129.6817  1.00512479122163

Source: Celestrak

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

6.3

Diameter

3.7

Span

6.3

Dry Mass

2440

Launch Mass

17200

Shape

Cyl

Radar Cross Section

3.1623

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

11S86 No. 3L

Purpose

Unknown

Mission

Unknown

Manufacturer

NPOE

Life Expectancy

Unknown

Bus

Blok DM

Configuration

Unknown

Motor

Unknown

Equipment

Unknown

Power System

Unknown

ADCS

Unknown

Transmitter Frequency

Unknown

Map
This tool will help you track the satellite's position and predict its upcoming passes over your location. Simply input the coordinates or click the geolocation button to get started.
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

Space Brief 15 Sep 2025

Space Brief 15 Sep 2025

Discover the latest in satellite tracking with key topics covering the launch of Tranche 1 satellites for the Space Development Agency, a record-setting Transporter-15 mission by Exolaunch, and new defense-focused satellite connectivity solutions by Satlink and Rivada.

SpaceX IPO at $1.77T as SDA Faces Consolidation | KeepTrack Space Brief

SpaceX IPO at $1.77T as SDA Faces Consolidation | KeepTrack Space Brief

SpaceX launches Starlink while debuting on Nasdaq at $1.77 trillion valuation. Meanwhile, Senate FY2027 NDAA would dissolve SDA into Space Force, affecting Tranche constellation tracking.

Space Brief 20 Mar 2025

Space Brief 20 Mar 2025

Today's brief highlights critical discussions in military space readiness, potential satellite 'dogfighting' scenarios, international defense collaborations, and a notable communications satellite launch.

Space Brief 27 Aug 2025

Space Brief 27 Aug 2025

Today's key space events include SpaceX's launch of the secretive X-37B military drone, XTAR's U.S. defense market strategy, and China's space station AI upgrade.

X Report 8 Mar 2025

X Report 8 Mar 2025

SpaceX faces setbacks with Starship Flight 8 amid debris fallout, achieves regulatory win for smartphone connectivity, and prepares for upcoming ISS missions.

Space Brief 30 Mar 2025

Space Brief 30 Mar 2025

Today's highlights include Rocket Lab joining the US Space Force's national security launch program, SpaceX's upcoming Starlink deployment, China's successful EVA, and intriguing science aboard SpaceX's Fram2 mission.

Space Brief 9 May 2025

Space Brief 9 May 2025

Today's briefing covers new satellite projects, military tech advancements, and insights into missile defense strategies. Discover partnerships in satellite design and exciting developments in space military technology.

Starlink Debuts Super Bowl Ad, Falcon 9 Preps for Crew-12 | KeepTrack X Report

Starlink Debuts Super Bowl Ad, Falcon 9 Preps for Crew-12 | KeepTrack X Report

SpaceX airs Starlink's first-ever Super Bowl ad to millions. Falcon 9 completes static fire test for Crew-12 launch on Feb 11. Falcon 9 resumed flights after engine investigation.