EOS-04

Indian radar imaging satellite

EOS-04

EOS-04 Satellite

Names| Radar Imaging Satellite-1A
Mission type| Imaging radar
Operator| ISRO
COSPAR ID| 2022-013A
SATCAT no.| 51656
Website| www.isro.gov.in/launcher/pslv-c52-eos-04-mission
Mission duration| 10 years (planned)[1]
2 years, 7 months, 7 days (in progress)
Spacecraft properties
Spacecraft| EOS-04
Manufacturer| Indian Space Research Organisation
Launch mass| 1,710 kg (3,770 lb)[1]
Power| 2280 watts[1]
Start of mission
Launch date| 14 February 2022, 00:29 UTC
Rocket| PSLV-C52
Launch site| Satish Dhawan Space Centre, First Launch Pad (FLP)
Contractor| Indian Space Research Organisation
Orbital parameters
Reference system| Geocentric orbit[2]
Regime| Sun-synchronous orbit
Perigee altitude| 526.7 km (327.3 mi)
Apogee altitude| 543.4 km (337.7 mi)
Inclination| 97.6°
Period| 95.2 minutes
Instruments
Synthetic Aperture Radar (C-band) (SAR-C)

Earth observation satellites series

<- RISAT-2BR2 (EOS-01)

EOS-04 or Earth Observation Satellite - 04 (formerly known as RISAT-1A) is an Indian Space Research Organisation Radar Imaging Satellite designed to provide high-quality images under all weather conditions for applications such as Agriculture, Forestry & Plantations, Soil Moisture & Hydrology and Flood mapping.[3][4] It is a follow on to RISAT-1 satellite with similar configuration. The satellite is developed by the ISRO and it is the sixth in a series of RISAT satellites.

## Satellite description

[edit]

Synthetic aperture radar can be used for Earth observation irrespective of the light and weather conditions of the area being imaged.[5] It complements/supplements data from Resourcesat, Cartosat and RISAT-2B Series.[6] The satellite carries a C-band synthetic-aperture radar (SAR) and has a liftoff mass of 1,710 kg (3,770 lb).[2] The EOS-04 orbit is polar and Sun-synchronous at 06:00 AM LTDN, at approximate altitude of 529 km.[7]

Assembly Integration and Testing of spacecraft was done by a consortium led by Alpha Design Technologies Ltd.[8] Approximate cost of EOS-04 is ₹490 crore (equivalent to ₹550 crore or US$66 million in 2023).[9][10]

## Launch

[edit]

EOS-04 was launched on the Polar Satellite Launch Vehicle (PSLV-C52) from First Launch Pad(FLP), SDSC, SHAR, Sriharikota at 05:59 hrs IST (00:29 hrs UTC) on 14 February 2022.[6][11][12] It was launched along with two ridesharing satellites, INS-2TD a technology demonstrator by ISRO and INSPIREsat-1 a university satellite.[11]

EOS-04 captured first images on 25 February 2022 after launch.[13]

## See also

[edit]

* Spaceflight portal

* RISAT
* PSLV

## References

[edit]

1. ^ a b c "PSLV-C52/EOS-04 Mission" (PDF). Archived from the original (PDF) on 9 February 2022. Retrieved 9 February 2022.
2. ^ a b "PSLV-C52/EOS-04 Mission". ISRO. Archived from the original on 9 February 2022. Retrieved 9 February 2022.
3. ^ "EOS-04 - ISRO". www.isro.gov.in. Archived from the original on 20 March 2022. Retrieved 17 February 2022.
4. ^ "CEOS Instrument: Synthetic Aperature Radiometer (RISAT)". Archived from the original on 9 February 2017. Retrieved 9 February 2016.
5. ^ Raj, N. Gopal (25 April 2012). "RISAT-1's radar can see through clouds and work in darkness". The Hindu. Chennai, India.
6. ^ a b "PSLV-C52/EOS-04 Brochure - ISRO". www.isro.gov.in. Archived from the original on 9 February 2022. Retrieved 17 February 2022.
7. ^ Reddy, O.V. Raghav (3 February 2016). "Future Earth Observation Missions of ISRO, NRSC User Interaction Meet 2016" (PDF). Archived from the original (PDF) on 3 February 2017.
8. ^ Chethan Kumar (15 February 2022). "isro: Consortium led by Adani-backed firm assembled, integrated and tested Isro's earth observation satellite | India News - Times of India". The Times of India. Retrieved 15 February 2022.
9. ^ "Lok Sabha Unstarred Question No. 4446, Observation Satellite EOS-4" (PDF). 30 March 2022. "The total time taken to realize the satellite is 63 months from date of financial sanction and the expenditure towards realization of satellite is nearly Rs. 490 crore."
10. ^ Kumar, Chethan (1 December 2021). "Teething troubles with indigenous tech cause for delay in 2 Sat launches; humidity halts SSLV - Times of India". The Times of India. Retrieved 15 February 2022.
11. ^ a b "Successful launch of PSLV-C52 with EOS-04 Satellite - ISRO". www.isro.gov.in. Archived from the original on 17 February 2022. Retrieved 15 February 2022.
12. ^ "14న పీఎస్‌ఎల్‌వీ ప్రయోగం". EENADU (in Telugu). Retrieved 28 January 2022.
13. ^ "EOS-04, INS-2TD and INSPIRESat-1: Update - ISRO". www.isro.gov.in. Archived from the original on 26 March 2022. Retrieved 30 March 2022.

* v
* t
* e

Polar Satellite Launch Vehicle

1990s|

* PSLV-D1 (20 Sep 1993, failure)
* PSLV-D2 (15 Oct 1994)
* PSLV-D3 (21 Mar 1996)
* PSLV-C1 (29 Sep 1997)
* PSLV-C2 (26 May 1999)

2000s|

* PSLV-C3 (22 Oct 2001)
* PSLV-C4 (METSAT, 12 Sep 2002)
* PSLV-C5 (Resourcesat-1, 17 Oct 2003)
* PSLV-C6 (HAMSAT, 5 May 2005)
* PSLV-C7 (10 Jan 2007)
* PSLV-C8 (23 Apr 2007)
* PSLV-C10 (21 Jan 2008)
* PSLV-C9 (28 Apr 2008)
* PSLV-C11 (22 Oct 2008)
* PSLV-C12 (20 Apr 2009)
* PSLV-C14 (23 Sep 2009)

2010s|

* PSLV-C15 (12 Jul 2010)
* PSLV-C16 (20 Apr 2011)
* PSLV-C17 (15 Jul 2011)
* PSLV-C18 (12 Oct 2011)
* PSLV-C19 (26 Apr 2012)
* PSLV-C21 (9 Sep 2012)
* PSLV-C20 (25 Feb 2013)
* PSLV-C22 (IRNSS-1A, 1 Jul 2013)
* PSLV-C25 (Mars Orbiter Mission, 5 Nov 2013)
* PSLV-C24 (IRNSS-1B, 4 Apr 2014)
* PSLV-C23 (30 Jun 2014)
* PSLV-C26 (IRNSS-1C, 16 Oct 2014)
* PSLV-C27 (IRNSS-1D, 28 Mar 2015)
* PSLV-C28 (DMC-3, 10 Jul 2015)
* PSLV-C30 (28 Sep 2015)
* PSLV-C29 (16 Dec 2015)
* PSLV-C31 (IRNSS-1E, 20 Jan 2016)
* PSLV-C32 (IRNSS-1F, 10 Mar 2016)
* PSLV-C33 (IRNSS-1G, 28 Apr 2016)
* PSLV-C34 (22 Jun 2016)
* PSLV-C35 (SCATSAT-1, 26 Sep 2016)
* PSLV-C36 (Resourcesat-2A, 7 Dec 2016)
* PSLV-C37 (15 Feb 2017)
* PSLV-C38 (23 Jun 2017)
* PSLV-C39 (IRNSS-1H, 31 Aug 2017, failure)
* PSLV-C40 (Cartosat-2F, 12 Jan 2018)
* PSLV-C41 (IRNSS-1I, 11 Apr 2018)
* PSLV-C42 (16 Sep 2018)
* PSLV-C43 (HySIS, 29 Nov 2018)
* PSLV-C44 (Microsat-R, 24 Jan 2019)
* PSLV-C45 (EMISAT, 1 Apr 2019)
* PSLV-C46 (RISAT-2B, 22 May 2019)
* PSLV-C47 (Cartosat-3, 27 Nov 2019)
* PSLV-C48 (RISAT-2BR1, 11 Dec 2019)

2020s|

* PSLV-C49 (EOS-01, 7 Nov 2020)
* PSLV-C50 (CMS-01, 17 Dec 2020)
* PSLV-C51 (Amazônia-1, 28 Feb 2021)
* PSLV-C52 (EOS-04, 14 Feb 2022)
* PSLV-C53 (DS-EO, NeuSAR, Scoob-1, POEM-1 (hosted), 30 Jun 2022)
* PSLV-C54 (EOS-06, BhutanSat aka INS-2B, Anand, 26 Nov 2022)
* PSLV-C55 (TeLEOS-2, Lumelite-4, POEM-2 (hosted), 22 Apr 2023)
* PSLV-C56 (DS-SAR, VELOX-AM, 30 Jul 2023)
* PSLV-C57 (Aditya-L1, 2 Sep 2023)
* PSLV-C58 (XPoSat, POEM-3 (hosted), 1 Jan 2024)

* List of PSLV launches
* Italics indicates future missions

* v
* t
* e

Radar Imaging Satellites

* RISAT-2 (Apr 2009)
* RISAT-1 (Apr 2012)
* RISAT-2B (May 2019)
* RISAT-2BR1 (Dec 2019)
* RISAT-1A (Sep 2021)

* v
* t
* e

Indian spacecraft

* List of Indian satellites
* List of Satish Dhawan Space Centre launches
* List of ISRO missions

Satellites|

| Communication|

* CMS
* 01
* 02
* GSAT
* 1
* 2
* 3 (EDUSAT)
* 4
* 5P
* 6
* 6A
* 7
* 7A
* 8
* 9 (South Asia Satellite)
* 10
* 11
* 12
* 14
* 15
* 16
* 17
* 18
* 19
* 29
* 30
* 31
* HAMSAT
* INSAT
* 1A
* 1B
* 1C
* 1D
* 2A
* 2B
* 2C
* 2D
* 2DT
* 2E
* 3A
* 3B
* 3C
* 3D
* 3DR
* 3DS
* 3E
* 4A
* 4B
* 4C
* 4CR
* 4E
* 4F
* 4G
* Planned: GSAT
* 20
* 22
* 23
* 24

|

Earth observation|

* Bhaskara
* I
* II
* Cartosat
* 1
* 2
* 2A
* 2B
* 2C
* 2D
* 2E
* 2F
* 3
* EMISAT
* EOS
* 1
* 2
* 4
* 7
* 8
* HySIS
* IMS-1
* IRS
* 1A
* 1B
* 1C
* 1D
* 1E
* P1
* P2
* P3
* Megha-Tropiques
* Microsat
* Microsat-R
* Oceansat
* 1
* 2
* Resourcesat
* 1
* 2
* RISAT
* 1
* 2
* 2B
* 2BR1
* Rohini
* RS-D1
* RS-D2
* SARAL
* SCATSAT-1
* Technology Experiment Satellite (TESS)
* Planned: NISAR
* GISAT
* Oceansat-3
* Resourcesat-3
* RISAT-1A

Experimental|

* APPLE
* Aryabhata
* Rohini
* RS-1
* Rohini Technology Payload (RTP)

Navigation|

* IRNSS
* 1A
* 1B
* 1C
* 1D
* 1E
* 1F
* 1G
* 1I
* NVS-01

Student satellites|

* ANUSAT
* Jugnu
* SRMSAT
* StudSat
* StudSat-2
* YouthSat
* Pratham

Space probes|

| Scientific|

* SROSS
* A
* B
* C
* C2

|

Astronomical|

* Astrosat
* Aditya-L1
* XPoSat
* AstroSat-2 (planned)

Lunar programme|

* Chandrayaan-1
* Moon Impact Probe
* Chandrayaan-2
* Vikram
* Pragyan
* Chandrayaan-3
* Vikram
* Pragyan
* Lunar Polar Exploration Mission
* Chandrayaan-4
* Chandrayaan-5
* Chandrayaan-6

Interplanetary|

* Mars Orbiter Mission
* Mars Orbiter Mission 2 (planned)
* Venus Orbiter Mission (planned)

Human
spaceflight|

* Indian Human Spaceflight Programme
* SRE-1
* SRE-II
* SRE-III
* Gaganyaan
* CARE
* Bharatiya Antariksha Station

* Future spacecraft in italics.

* v
* t
* e

Earth reconnaissance satellites (excluding China, Russia and the United States)

France |

| IMINT|

* Hélios IA & IB
* Hélios 2A & 2B
* Pléiades IA & IB
* Pléiades Neo 3 & 4
* CSO-1
* CSO-2

|

SIGINT|

* Cerise
* Clémentine
* Essaim
* Elisa
* CERES (× 3)

Germany |

| Radar IMINT|

* SAR-Lupe
* TerraSAR-X
* TanDEM-X

|

India |

| IMINT|

* Cartosat-1
* Cartosat-2
* Cartosat-2A
* Cartosat-2B
* Cartosat-2C
* Cartosat-2D
* Cartosat-2E
* Cartosat-2F
* Cartosat-3
* Microsat-R

|

Radar IMINT|

* RISAT-1
* RISAT-2
* RISAT-2B
* RISAT-2BR1
* RISAT-1A

SIGINT|

* EMISAT

Israel |

| IMINT|

* Ofeq-5
* Ofeq-7
* Ofeq-9

|

Radar IMINT|

* Ofeq-8 (TecSAR)
* Ofeq-10 (TecSAR 2)
* Ofeq-11

Italy |

| Radar IMINT|

* COSMO-SkyMed

|

Japan |

| IMINT|

* IGS 1A/B
* IGS 2A/B
* IGS 3A
* IGS 4A/B
* IGS 5A
* IGS 6A
* IGS 7A
* IGS 8A/B

|

Pakistan |

| IMINT|

* PRSS-I

|

South Korea |

| IMINT|

* ANASIS-II

|

Spain |

| Radar IMINT|

Paz

|

Turkey |

| IMINT|

* Göktürk-1
* Göktürk-2
* Göktürk-3

|

United Kingdom |

| IMINT|

* Carbonite-2

|

* v
* t
* e

← 2021

Orbital launches in 2022

2023 →

January|

* Starlink G4-5 (49 satellites)
* ION-SCV 004 (LabSat, STORK-1, STORK-2, SW1FT), Capella 7, Capella 8, ICEYE X14, ICEYE X16, USA-320, USA-321, USA-322, USA-323, DEWA SAT-1, Flock 4x × 44, Kepler × 4, Lemur-2 × 5, Nepal PQ-1
* Lemur-2 Krywe, STORK-3, TechEdSat-13, Unicorn-1, Unicorn-2 × 4
* Shiyan 13
* Starlink G4-6 (49 satellites)
* USA-324 / GSSAP-5, USA-325 / GSSAP-6
* CSG-2

February|

* USA-326
* Starlink G4-7 (49 satellites)
* Kosmos 2553 / Neitron №1
* OneWeb L13 (34 satellites)
* EOS-04 / RISAT-1A
* Progress MS-19
* Cygnus NG-17 (KITSUNE)
* Starlink G4-8 (46 satellites)
* Starlink G4-11 (50 satellites)
* Jilin-1 Gaofen-03D × 9, Jilin-1 Mofang-02A 01

March|

* GOES-18 / GOES-T
* Starlink G4-9 (47 satellites)
* Noor 2
* Starlink G4-10 (48 satellites)
* SpaceBEE × 16, SpaceBEE NZ × 4
* Yaogan 34-02
* Soyuz MS-21
* Starlink G4-12 (53 satellites)
* Meridian-M 10

April|

* ION-SCV 005 (KSF2 × 4), EnMAP, Lynk Tower 01, MP42 / Tiger-3, ÑuSat × 5, SpaceBEE × 12
* Gaofen 3-03
* Kosmos 2554 / Lotos-S1 №5
* Axiom Mission 1
* ChinaSat 6D
* USA-327 / NOSS-3 9A, NOSS-3 9B
* Starlink G4-14 (53 satellites)
* SpaceX Crew-4
* Kosmos 2555 / EO MKA №2
* Starlink G4-16 (53 satellites)
* Jilin-1 Gaofen-03D × 4, Jilin-1 Gaofen-04A

May|

* SpaceBEE × 16, SpaceBEE NZ × 8, Unicorn-2F
* Jilin-1 Kuanfu-01C, Jilin-1 Gaofen-03D × 7
* Starlink G4-17 (53 satellites)
* Tianzhou 4
* Jilin-1 Mofang-01A†
* Starlink G4-13 (53 satellites)
* Starlink G4-15 (53 satellites)
* Starlink G4-18 (53 satellites)
* Kosmos 2556 / Bars-M 3L
* Boe OFT-2
* ION-SCV 006 (SBUDNIC), SHERPA AC1, Vigoride-3, ICEYE × 5, ÑuSat × 4, Lemur-2 × 5, Platform 1, PTD-3

June|

* Progress MS-20
* Shenzhou 14
* TROPICS 02†, TROPICS 04†
* Starlink G4-19 (53 satellites)
* CMS-02 or GSAT-24
* Yaogan 35-02 (3 satellites)
* CAPSTONE

July|

* USA-337
* Kosmos 2557 / GLONASS-K 16L
* Starlink G4-21 (53 satellites)
* Starlink G3-1 (46 satellites)
* Tianlian II-03
* SpaceX CRS-25 (TUMnanoSAT)
* Starlink G4-22 (53 satellites)
* Starlink G3-2 (46 satellites)
* Wentian
* Starlink G4-25 (53 satellites)
* Yaogan 35-03 (3 satellites)

August|

* Kosmos 2558 / Nivelir №3
* USA-335 / RASR-4
* USA-336 / SBIRS GEO-6
* Chinese reusable experimental spacecraft
* Danuri
* EOS-02 / Microsat-2A†, AzaadiSAT†
* Starlink G4-26 (52 satellites)
* Jilin-1 Gaofen-03D × 10, Jilin-1 Hongwai-01A × 6
* Starlink G3-3 (46 satellites)
* Yaogan 35-04 (3 satellites)
* Starlink G4-27 (53 satellites)
* Starlink G4-23 (54 satellites)
* Starlink G3-4 (46 satellites)

September|

* Yaogan 33-02
* Starlink G4-20 (51 satellites)
* Yaogan 35-05 (3 satellites)
* Eutelsat Konnect VHTS
* Starlink G4-2 (34 satellites)
* ChinaSat 1E
* Starlink G4-34 (54 satellites)
* Soyuz MS-22
* KH-11 19/NROL-91
* Shiyan 14, Shiyan 15
* Starlink G4-35 (52 satellites)
* Yaogan 36-01 (3 satellites)
* Shiyan 16A, Shiyan 16B, Shiyan 17

October|

* TechEdSat-15
* SES-20, SES-21
* SpaceX Crew-5
* Starlink G4-29 (52 satellites)
* Galaxy 33, Galaxy 34
* GLONASS-K 17L
* RAISE-3†, KOSEN-2†, MAGNARO†, MITSUBA†, WASEDA-SAT-ZERO†
* Huanjing 2E
* Yaogan 36-02 (3 satellites)
* Hotbird 13F
* Starlink G4-36 (54 satellites)
* OneWeb L14 (36 satellites)
* Gonets-M × 3
* Progress MS-21
* Starlink G4-31 (53 satellites)
* Shiyan 20C
* Mengtian

November|

* LDPE-2, USA-339 / Shepherd Demonstration, USA-340, USA-341, USA-344 / USUVL
* Kosmos 2563 / EKS-6
* Hotbird 13G
* MATS
* ChinaSat 19
* Cygnus NG-18 (SpaceTuna1)
* NOAA-21, LOFTID
* Yunhai-3 01
* Tianzhou 5
* Galaxy 31, Galaxy 32
* Yaogan 34-03
* Jilin-1 Gaofen-03D × 5
* Artemis I (ArgoMoon, BioSentinel, CuSP, EQUULEUS, LunaH-Map, Lunar IceCube, LunIR, Near-Earth Asteroid Scout, OMOTENASHI, Team Miles)
* Eutelsat 10B
* EOS-06 / Oceansat-3, Astrocast × 4
* SpaceX CRS-26
* Yaogan 36-03 (3 satellites)
* Kosmos 2564 / GLONASS-M 761
* Shenzhou 15
* Kosmos 2565 / Lotos-S1 №6 (Kosmos 2566)
* Oceansat-3

December|

* Gaofen 5-01A
* OneWeb L15 (40 satellites)
* Jilin-1 Gaofen-03D × 7, Jilin-1 Pingtai-01A 01
* Hakuto-R Mission 1 (Rashid), Lunar Flashlight
* Shiyan 20A, Shiyan 20B
* Galaxy 35, Galaxy 36, MTG-I1
* Yaogan 36-04 (3 satellites)
* Shiyan 21
* SWOT
* O3b mPOWER 1, O3b mPOWER 2
* Starlink G4-37 (54 satellites)
* Pléiades Neo 5†, Pléiades Neo 6†
* Gaofen 11-04
* Starlink G5-1 (54 satellites)
* Shiyan 10-02
* EROS-C3

Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ).
Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

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