# CBERS-4A

> Chinese-Brazilian remote sensing satellite

**Wikidata**: [Q20050234](https://www.wikidata.org/wiki/Q20050234)  
**Source**: https://4ort.xyz/entity/cbers-4a

## Summary  
CBERS-4A is a Chinese-Brazilian Earth observation satellite developed as part of the China–Brazil Earth Resources Satellite program. Launched in December 2019, it continues the legacy of the CBERS series, providing remote sensing data for environmental monitoring, agriculture, and disaster management. The satellite operates under the Ziyuan satellite program and was launched from the Taiyuan Satellite Launch Center using a Long March 4B rocket.

## Key Facts  
- **Launch Date**: 2019-12-20  
- **Launch Site**: Taiyuan Satellite Launch Center  
- **Launch Vehicle**: Long March 4B  
- **Country of Operation**: Brazil  
- **Part Of**: China–Brazil Earth Resources Satellite program, Ziyuan program  
- **Predecessor**: CBERS-4  
- **COSPAR ID**: 2019-093E  
- **Instance Of**: Earth observation satellite  
- **Aliases**: ZY-1 04A, Zi Yuan 1-04A, Ziyuan 1-04A  
- **Wikidata Description**: Chinese-Brazilian remote sensing satellite  

## FAQs  
### Q: What is CBERS-4A used for?  
A: CBERS-4A is an Earth observation satellite used for remote sensing applications such as environmental monitoring, urban planning, agriculture assessment, and disaster response. It provides multispectral imagery to support sustainable development efforts in Brazil and other participating countries.

### Q: Who developed CBERS-4A?  
A: CBERS-4A was jointly developed by China and Brazil under the China–Brazil Earth Resources Satellite program. It is part of China’s Ziyuan satellite series and represents continued collaboration between the two nations in space technology.

### Q: When was CBERS-4A launched?  
A: CBERS-4A was launched on December 20, 2019, from the Taiyuan Satellite Launch Center in China using a Long March 4B carrier rocket.

## Why It Matters  
CBERS-4A plays a critical role in advancing Earth observation capabilities through international cooperation. As part of the long-standing China–Brazil Earth Resources Satellite program, it supports scientific research and policy-making in areas like land use, natural resource management, and climate monitoring. Its high-resolution imaging instruments contribute valuable data to both governmental agencies and global environmental initiatives. By continuing the successful lineage of the CBERS satellites, CBERS-4A ensures uninterrupted access to vital geospatial information for Latin American and global users.

## Notable For  
- Joint development between China and Brazil under a longstanding bilateral space cooperation agreement  
- Continuation of the CBERS satellite series with enhanced remote sensing capabilities  
- Integration into the broader Ziyuan satellite program managed by China  
- Provides open-access multispectral imagery for public and scientific use  
- Successful launch via the reliable Long March 4B rocket  

## Body  
### Overview  
CBERS-4A (China-Brazil Earth Resources Satellite-4A) is an Earth observation satellite jointly developed by the National Institute for Space Research (INPE) of Brazil and the China Academy of Space Technology (CAST). It serves as a successor to CBERS-4 and contributes to the ongoing collaboration between China and Brazil in space-based Earth observation.

### Mission Objectives  
The primary mission objectives of CBERS-4A include:  
- Providing medium-resolution optical imagery for land resource surveys  
- Supporting agricultural monitoring and food security assessments  
- Assisting in environmental protection and urban planning activities  
- Facilitating disaster monitoring and emergency response operations  

### Technical Specifications  
- **Satellite Class**: Earth observation satellite  
- **Orbit Type**: Sun-synchronous orbit  
- **Imaging Instruments**: Includes panchromatic and multispectral cameras  
- **Operational Lifespan**: Designed for at least 3 years  
- **Data Resolution**: Varies depending on instrument mode  

### Launch Details  
- **Launch Date**: 2019-12-20  
- **Launch Site**: Taiyuan Satellite Launch Center, China  
- **Launch Vehicle**: Long March 4B  
- **International Designation (COSPAR ID)**: 2019-093E  

### Programmatic Context  
CBERS-4A belongs to the following programs:  
- **China–Brazil Earth Resources Satellite Program** – A collaborative initiative since 1988 aimed at developing Earth observation satellites for peaceful uses  
- **Ziyuan Program** – China’s national series of resource and environment-monitoring satellites  

### Legacy and Succession  
CBERS-4A succeeded CBERS-4 after the latter experienced operational issues. Like its predecessor, CBERS-4A maintains the dual heritage of Chinese technological design and Brazilian application-driven utilization.

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## References

1. Jonathan's Space Report