# Yaogan 21

> satellite

**Wikidata**: [Q111471671](https://www.wikidata.org/wiki/Q111471671)  
**Source**: https://4ort.xyz/entity/yaogan-21

## Summary
Yaogan 21 is an artificial satellite that was launched into orbit as part of China's Yaogan series of satellites on September 8, 2014, using a Long March 4B carrier rocket.

## Key Facts
- It is classified as an artificial satellite (Cospar ID: 2014-053A)
- Part of the Yaogan satellite program
- Launched on September 8, 2014
- Launched by a Long March 4B carrier rocket
- Has the identifier 40143

## FAQs
### Q: What is the primary purpose of Yaogan 21?
A: It is part of China's Yaogan series of satellites, typically used for Earth observation or reconnaissance purposes.

### Q: When was Yaogan 21 launched?
A: It was launched on September 8, 2014.

### Q: What rocket was used to launch Yaogan 21?
A: It was launched using a Long March 4B carrier rocket.

### Q: What is its classification?
A: It is classified as an artificial satellite.

## Why It Matters
Yaogan 21 represents China's continued development of Earth observation capabilities through its Yaogan satellite program. These satellites are typically used for reconnaissance, disaster monitoring, and environmental surveillance, providing critical data for national security and scientific research. The program demonstrates China's growing space capabilities and its ability to deploy advanced remote sensing technology from orbit. The satellite's launch in 2014 marked another step in China's expanding space infrastructure and its growing role in global space activities.

## Notable For
- It is part of China's Yaogan series of satellites, which are primarily used for Earth observation and reconnaissance missions
- Launched using a Long March 4B carrier rocket, a common Chinese orbital launch vehicle
- Has the specific Cospar identification number 2014-053A
- Identified by the identifier 40143
- Represents China's ongoing development of space-based surveillance capabilities

## Body
### Technical Specifications
Yaogan 21 is an artificial satellite that operates in Earth orbit. It was launched on September 8, 2014, as indicated by its Cospar ID of 2014-053A. The satellite is part of China's Yaogan program, which focuses on Earth observation and reconnaissance missions. The launch was conducted using a Long March 4B carrier rocket, a medium-lift orbital launch vehicle developed by China Aerospace Technology Corporation (CASC).

### Program Context
The Yaogan series represents China's strategic investment in space-based intelligence gathering and Earth observation capabilities. These satellites typically operate in low Earth orbit and are equipped with high-resolution imaging systems. The program has been active since the early 2000s and has seen multiple launches over the years, with Yaogan 21 being one of the satellites in this ongoing series.

### Operational Status
As an artificial satellite, Yaogan 21 continues to operate in orbit, providing data for various applications including disaster response, environmental monitoring, and military reconnaissance. The satellite's orbital parameters and mission duration are maintained by China's space program, though specific operational details are typically classified.

### Technical Details
The satellite utilizes advanced remote sensing technology to capture high-resolution images of Earth's surface. Its design includes sophisticated imaging systems capable of detecting various types of terrain and activities from space. The Long March 4B launch vehicle provided the necessary thrust to place the satellite into its intended orbital position, marking another successful launch in China's space program.

## References

1. Jonathan's Space Report