EOS-09
Indian radar imaging satellite
From Wikipedia, the free encyclopedia
EOS-09 or Earth Observation Satellite-09 (formerly known as RISAT-1B) was an Indian Space Research Organisation radar imaging satellite designed to provide continuous and reliable remote sensing data for operational applications across various sectors.[2] It was intended to be a follow on to RISAT-1 satellite with similar configuration. The satellite was developed by the ISRO and was the seventh in the series of RISAT satellites.[3][4][5]
EOS-9 during Integration | |
| Names | Radar Imaging Satellite-1B |
|---|---|
| Mission type | Imaging radar |
| Operator | ISRO |
| Website | ISRO PSLV-C61 / EOS-09 Mission |
| Mission duration | 5 years (planned) Failed to orbit |
| Spacecraft properties | |
| Spacecraft | EOS-09 |
| Manufacturer | ISRO |
| Start of mission | |
| Launch date | 18 May 2025, 05:59 IST |
| Rocket | PSLV-C61 |
| Launch site | Satish Dhawan Space Centre, First Launch Pad (FLP) |
| Contractor | ISRO |
| Orbital parameters | |
| Reference system | Geocentric orbit[1] |
| Regime | Sun-synchronous orbit |
| Perigee altitude | 526.7 km (327.3 mi) (planned) |
| Apogee altitude | 543.4 km (337.7 mi) (planned) |
| Inclination | 97.6° |
| Period | 95.2 minutes |
| Instruments | |
| Synthetic Aperture Radar (C-band) (SAR-C) | |
Satellite description
Synthetic Aperture Radar (SAR) can be used for Earth observation irrespective of the light and weather conditions of the area being imaged.[6] It complements/supplements data from Resourcesat, Cartosat and RISAT-2B Series.[7] The satellite carries a C-band synthetic-aperture radar (SAR) and has a liftoff mass of 1,710 kg (3,770 lb).[1] The EOS-09 orbit is expected to be in a polar and Sun-synchronous orbit (SSO) at 05:30 AM LTDN, at approximate altitude of 529 km.[8]
