 LVM3-M5 equipped with GSAT-7R, being transferred to the Second Launch Pad | |
| Mission type | Communication |
|---|---|
| Operator | Indian Navy |
| COSPAR ID | 2025-249B |
| SATCATno. | 66311 |
| Website | CMS-03 |
| Mission duration | Planned: 15 years[1] Elapsed: 21 days |
| Spacecraft properties | |
| Manufacturer | U. R. Rao Satellite Centre[1] |
| Launch mass | 4,410 kilograms (9,720 lb) |
| Start of mission | |
| Launch date | 2 November 2025, 11:56 (2025-11-02UTC11:56Z) UTC |
| Rocket | LVM3-M5 |
| Launch site | Satish Dhawan Space Centre,Sriharikota |
| Entered service | 2 November 2025[1] |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Geostationary orbit |
← CMS-02 | |
GSAT-7R (also known asCMS-03) is a multi-band communication satellite developed byISRO for theIndian Navy. The satellite is meant to replace the existing and operationalGSAT-7.
The satellite, weighing 4,410 kilograms (9,720 lb),[2][1] is meant to transmit voice, video and data among the naval ships, submarines, aircraft and Maritime Operation Centres[1] of theIndian Navy deployed across theIndian Ocean Region, covering up to 2,000 km from India's coastline.[3]
The satellite employs advanced payloads in multiple frequency bands, includingUHF,S,C andKu bands.[3] It is also equipped with indigenous components like a 1,200 litre propulsion tank and collapsible antenna systems. It also has a planned lifespan of 15 years.[1]
The contract for the₹1,589crore (US$225.65 million) satellite project was signed in 11 June 2019 between the Indian Navy and theISRO.[4][5]
During the time of contract signing in 2019, the projected launch date of the satellite was expected between 2020[4] and 2022.[5]
By August 2025, the delivery timeline had slipped by few years to November 2025.[6][7] By 23 October, the launch date was scheduled on 2 November.[8]
The satellite assembly and integration with launch vehicle has been completed. The launch vehicle was moved to the launchpad on 26 October and pre-launch procedures were initiated thereafter. It is the heaviest satellite to be launched to theGeostationary Transfer Orbit orbit from India. Additionally, this is the first launch of LVM3, only after its July 2023 launch ofChandrayaan-3.[9][10]
On 2 November 2025, at 5:26 pmIST,[2] ISRO successfully placed the CMS-03 satellite into the desired orbit through the LVM3-M5 rocket from the Second Launch Pad[1] of theSatish Dhawan Space Centre,Sriharikota.[11][12] The mission featured an experiment, re-ignition of the cryogenic upper stage. The satellite was separated from the launch vehicle at around 16 minutes in sub-GTO orbit. from launch with aperigee of 26,700 km.[1]
The vehicle performance of LMV3-M5 had been enhanced by 10% to accommodate the CMS-03 satellite which is heavier than its payload capacity of 4 tonnes for GTO orbits.[1]
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