COSMOS 2133 (21111)

COSPAR: 1991-010A | Alt Name: Kosmos-2133

Image
COSMOS 2133 Satellite Image
Additional Sources
Launch Details

Launch Date

February 14, 1991

Launch Pad

LC200/39

Launch Vehicle

Proton-K/DM-2

Orbital Elements

NORAD ID

21111

International Designator

1991-010A

Epoch

Fri, 03 Jul 2026 22:52:02 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

13.23°

Right Ascension

342.65°

Eccentricity

Calculating...

Argument of Perigee

197.14°

Period

1436.20 min

Mean Motion

1.00 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

COSMOS 2133

Alternative Name

Kosmos-2133

Type

Payload

Status

Non-operational

Owner

PVO

Country

USSR

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 21111U 91010A   26184.95280773 -.00000139  00000-0  00000-0 0  9993
2 21111  13.2330 342.6482 0005003 197.1354 164.4912  1.00264436129619

Source: Celestrak

Summary
COSMOS 2133, also known as Kosmos-2133, is an early warning satellite launched on February 14, 1991, from the TYMSC launch site using a Proton-K/DM-2 launch vehicle. Manufactured by NPOL/KOMET for PVO, this satellite uses the US-KMO-Bus configuration and has dimensions of 5 meters in length, 2 meters in diameter, and a span of 10 meters. Its dry mass is 2100 kilograms with a total launch mass of 2200 kilograms. The satellite is equipped with an IR-telescope as part of its payload known as Oko-1 No. 7120. Power comes from two deployable solar arrays and batteries, and it has a surface area (RCS) of 13.8214 square meters. COSMOS 2133's shape is described as Step Cyl + 2 Pan, and its mission was to provide early warning capabilities with an expected operational lifetime of 5-7 years.
Physical Characteristics

Length

5

Diameter

2

Span

10

Dry Mass

2100

Launch Mass

2200

Shape

Step Cyl + 2 Pan

Radar Cross Section

13.8214

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Oko-1 No. 7120

Purpose

Early warning

Mission

Early warning

Manufacturer

NPOL/KOMET

Life Expectancy

5-7 years

Bus

Prognoz

Configuration

US-KMO-Bus

Motor

Unknown

Equipment

IR-telescope

Power System

2 deployable solar arrays, batteries

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.

Graveyard Orbit

Graveyard Orbit

The final resting place for retired satellites, a disposal orbit where defunct spacecraft are sent to stay out of the way

Space Brief 1 May 2025

Space Brief 1 May 2025

Today's space brief covers NASA's shift to private companies for astronaut rescue, EU's potential collaboration with SES for satellite services, and notable military contract allocations. Plus, a satellite spotlight on LEMUR-2-KADI.

Space Brief 15 May 2025

Space Brief 15 May 2025

Today's brief highlights a nuclear battery startup's funding boost, advisory board additions in the space sector, and key military updates impacting space operations.

X Report 7 Dec 2024

X Report 7 Dec 2024

SpaceX celebrates 300 successful booster landings, further solidifying its dominance in reusable rocket technology.

Space Brief 21 Dec 2025

Space Brief 21 Dec 2025

Today's briefing highlights the SDA's significant satellite award, Blue Origin's groundbreaking flight, and NASA's call for an Artemis review.

Space Brief 4 Jun 2025

Space Brief 4 Jun 2025

Key developments include China's Shijian 26 satellite launch, U.S. Space Force's BAE Systems contract for missile-tracking satellites, and military advancements in space systems.

Starlink-34343 | The Second Fragmentation Event in Three Months

Starlink-34343 | The Second Fragmentation Event in Three Months

STARLINK-34343 broke apart at 560 kilometers. SpaceX's response - launch more satellites the next morning - tells you everything about the confidence gap between fleet statistics and individual failure modes.

Space Brief 28 Jun 2025

Space Brief 28 Jun 2025

Today's brief covers a Pentagon review of satellite launch options, Kongsberg's completed maritime satellite network, York's new satellite launch, DARPA's project cancellation, and more.