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 | 
| Mission duration | 10 years (planned) 3 years, 4 months, 6 days (in progress) | 
| Spacecraft properties | |
| Spacecraft | EOS-04 | 
| Manufacturer | Indian Space Research Organisation | 
| Launch mass | 1,710 kg (3,770 lb) | 
| Power | 2280 watts | 
| 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 | 
| 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) | |
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. 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.