COSMOS 2550 (48865)

COSPAR: 2021-056A | Alt Name: Kosmos-2550

Image
COSMOS 2550 Satellite Image
Additional Sources
Launch Details

Launch Date

June 25, 2021

Launch Site

PLMSC

Launch Pad

LC43/4

Launch Vehicle

Soyuz-2-1B

Orbital Elements

NORAD ID

48865

International Designator

2021-056A

Epoch

Fri, 03 Jul 2026 03:07:36 GMT

Apogee

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Perigee

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Inclination

67.14°

Right Ascension

51.68°

Eccentricity

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Argument of Perigee

268.38°

Period

93.88 min

Mean Motion

15.34 rev/day

Latitude

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Longitude

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Altitude

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Velocity

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Polar Plot
3D Visualization
Basic Satellite Info

Name

COSMOS 2550

Alternative Name

Kosmos-2550

Type

Payload

Status

Operational

Owner

VVKOV

Country

Russia

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 48865U 21056A   26184.13028056  .00005961  00000-0  18656-3 0  9991
2 48865  67.1430  51.6786 0008373 268.3779  91.6416 15.33883607281169

Source: Celestrak

Summary
COSMOS 2550 (also known as Kosmos-2550) is a satellite operated by VVKOV, launched on June 25, 2021, from the PLMSC launch site using a Soyuz-2-1B launch vehicle. The satellite, based on the Yantar bus configuration and identified as a Pion-NKS, has dimensions of 8 meters in length, 2.7 meters in diameter, and an 8.5-meter span. It was manufactured by TSSKBP/ARSLO for SIGINT (Signals Intelligence) purposes and carries the payload Pion-NKS No. 901. The satellite's dry mass is 6700 kg, with a launch mass of 7231 kg. Its power system includes two deployable solar arrays and batteries. The shape is described as cylindrical with two panels attached.
Physical Characteristics

Length

8

Diameter

2.7

Span

8.5

Dry Mass

6700

Launch Mass

7231

Shape

Cyl + 2 Pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Pion-NKS No. 901

Purpose

SIGINT

Mission

SIGINT

Manufacturer

TSSKBP/ARSLO

Life Expectancy

Unknown

Bus

Pion-NKS

Configuration

Yantar bus

Motor

Unknown

Equipment

Unknown

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

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