EOS-4 (51656)

COSPAR: 2022-013A | Alt Name: EOS-04

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Launch Details

Launch Date

February 14, 2022

Launch Site

SRILR

Launch Pad

FLP

Launch Vehicle

PSLV-XL

Orbital Elements

NORAD ID

51656

International Designator

2022-013A

Epoch

Sun, 19 Jul 2026 20:12:44 GMT

Apogee

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Perigee

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Inclination

97.51°

Right Ascension

206.99°

Eccentricity

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Argument of Perigee

89.18°

Period

95.19 min

Mean Motion

15.13 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

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IRS bus Indian Space Research Organisation India satellites Payloads

Basic Satellite Info

Name

EOS-4

Alternative Name

EOS-04

Type

Payload

Status

Operational

Owner

ISRO

Country

India

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs

1 51656U 22013A   26200.84218122  .00000253  00000+0  18124-4 0  9998

2 51656  97.5116 206.9931 0002098  89.1808 270.9663 15.12727084244423

Source: Celestrak

Summary

The EOS-4 satellite, also known as IRS 2022-013A, was launched on February 14, 2022, from the Satish Dhawan Space Center (SRILR) using a PSLV-XL launch vehicle. The spacecraft is owned by ISRO and manufactured by ISAC/HAL. It has dimensions of 3.9 meters in length, 2 meters in diameter, and spans up to 11.7 meters when its equipment is deployed. EOS-4 carries the RISAT-1A payload equipped with a C-Band SAR (Synthetic Aperture Radar) for Earth observation purposes. The satellite has a dry mass of 1650 kg and weighed 1710 kg at launch. It uses two deployable solar arrays along with batteries to provide power. EOS-4 is designed to operate in space for five years, focusing on radar-based Earth observation missions.

Physical Characteristics

Length

3.9

Diameter

Span

11.7

Dry Mass

1650

Launch Mass

1710

Shape

Box + Hex Box+3 pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

RISAT-1A

Purpose

Earth observation, radar

Mission

Earth observation, radar

Manufacturer

ISAC/HAL

Life Expectancy

5 years

Bus

IRS

Configuration

Unknown

Motor

Equipment

C-Band SAR

Power System

2 deployable solar arrays, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map

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