# Oceansat

> Indian class of oceanography satellites

**Wikidata**: [Q11885094](https://www.wikidata.org/wiki/Q11885094)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Oceansat)  
**Source**: https://4ort.xyz/entity/oceansat

## Summary
Oceansat is an Indian class of Earth observation satellites specifically designed for oceanography. First launched in 1999, these satellites are operated by the Indian Space Research Organisation (ISRO) to monitor Earth's oceans from polar and sun-synchronous orbits.

## Key Facts
- **Operator**: Indian Space Research Organisation (ISRO)
- **Country**: India
- **Launch Date**: 26 May 1999
- **Launch Vehicle**: Polar Satellite Launch Vehicle-G (PSLV-G)
- **Orbit Type**: Sun-synchronous and polar orbit
- **Primary Purpose**: Oceanographic observation and Earth monitoring
- **Subclass of**: Earth observation satellite
- **Alias**: Oceansat (IRS-P4)
- **Owned by**: Indian Space Research Organisation
- **Google Knowledge Graph ID**: /g/11h94ypw00

## FAQs
### Q: What is Oceansat?  
A: Oceansat is an Indian class of satellites designed for oceanography, launched by ISRO in 1999. They observe Earth from polar and sun-synchronous orbits to study oceanic phenomena.

### Q: When was the first Oceansat satellite launched?  
A: The first Oceansat satellite was launched on 26 May 1999 by ISRO using a Polar Satellite Launch Vehicle-G (PSLV-G).

### Q: Who operates Oceansat?  
A: The Indian Space Research Organisation (ISRO) operates and owns the Oceansat satellites.

### Q: What orbit do Oceansat satellites follow?  
A: Oceansat satellites operate in both sun-synchronous and polar orbits for consistent Earth observation coverage.

### Q: What is another name for Oceansat?  
A: Oceansat is also known as IRS-P4, indicating its place in India's Indian Remote Sensing (IRS) satellite series.

## Why It Matters
Oceansat satellites enable critical monitoring of Earth's oceans, supporting research on marine ecosystems, climate change, and ocean currents. As a cornerstone of India's space-based Earth observation capabilities, they provide data for weather forecasting, coastal management, and disaster response. This class of satellites represents India's specialized commitment to oceanographic science, filling gaps in global ocean monitoring through indigenous technology and polar-orbit platforms.

## Notable For
- First Indian dedicated oceanography satellite class, launched in 1999  
- Operated from sun-synchronous and polar orbits for comprehensive Earth coverage  
- Part of India's indigenous Earth observation satellite program under ISRO  
- Launched exclusively by the Polar Satellite Launch Vehicle-G (PSLV-G)  
- Also recognized as IRS-P4 within the broader Indian Remote Sensing satellite series  

## Body
### Overview
Oceansat is a class of Earth observation satellites developed by India for oceanographic studies. The first satellite in the class was deployed on 26 May 1999, establishing India's capabilities in space-based ocean monitoring.

### Operations
- Operated by the Indian Space Research Organisation (ISRO)  
- Maintains dual orbital profiles: sun-synchronous and polar orbits  
- Owned and controlled exclusively by ISRO  
- Supports scientific research on oceanic and terrestrial phenomena  

### Technical Details
- **Launch System**: Deployed via Polar Satellite Launch Vehicle-G (PSLV-G)  
- **Orbital Characteristics**: Sun-synchronous and polar orbits enable regular global passes  
- **Satellite Series**: Also designated as IRS-P4 (Indian Remote Sensing satellite, fourth payload series)  
- **Mission Focus**: Specialized for ocean observation as part of Earth observation satellite class  
- **Country of Origin**: India  

### Development and Control
- Designed and managed by the Indian Space Research Organisation  
- Funded and owned entirely by the Government of India  
- Classified under Earth observation satellite subclass  
- Part of India's indigenous space-based remote sensing initiatives  

### Metadata
- **Wikipedia Coverage**: Available in English and Finnish languages  
- **Sitelink Count**: 2 (primary reference domains)  
- **Google Knowledge Graph**: Recognized under ID /g/11h94ypw00

## References

1. [Source](https://www.isro.gov.in/launchers/list-of-pslv-launches)