# Tianlian I-02
**Wikidata**: [Q2431135](https://www.wikidata.org/wiki/Q2431135)  
**Source**: https://4ort.xyz/entity/tianlian-i-02

## Summary
Tianlian I-02 is a Chinese data tracking and relay communications satellite, part of the Tianlian I series. It was launched on July 11, 2011, aboard a Long March 3C rocket from the Xichang Satellite Launch Center. The satellite supports China's space communication and tracking infrastructure.

## Key Facts
- **Launch Date**: July 11, 2011 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **COSPAR ID**: 2011-032A ([reference](https://www.wikipedia.org/))  
- **Launch Vehicle**: Long March 3C ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Launch Site**: Xichang Satellite Launch Center ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Satellite Class**: Tianlian I ([reference](https://www.wikipedia.org/))  
- **Satellite Catalog Number (SCN)**: 37737 ([reference](https://www.wikidata.org/wiki/Q6272367))  
- **Significant Event**: Rocket launch at Xichang on July 11, 2011 ([reference](https://www.wikidata.org/wiki/Q6272367))  

## FAQs
### Q: What is the purpose of Tianlian I-02?  
A: Tianlian I-02 is designed for data tracking and relay communications, supporting China's space missions and satellite operations.  

### Q: Which rocket launched Tianlian I-02?  
A: It was launched aboard a Long March 3C rocket from the Xichang Satellite Launch Center.  

### Q: Is Tianlian I-02 part of a larger satellite series?  
A: Yes, it belongs to the Tianlian I series, which includes other Chinese data relay satellites developed since 2003.  

## Why It Matters  
Tianlian I-02 plays a critical role in China's space communication network, enabling real-time data transmission between ground stations and spacecraft, including crewed missions like Shenzhou. By providing reliable tracking and relay services, it enhances China's ability to monitor and control satellites and deep-space missions. The satellite's launch marked another step in China's efforts to build an independent space infrastructure, reducing reliance on foreign systems.  

## Notable For  
- **Part of China's First Data Relay Satellite System**: Tianlian I-02 is part of China's initial effort to establish a domestic space communication network.  
- **Supports Crewed Missions**: It aids in communication for China's human spaceflight program.  
- **Launched on Long March 3C**: Demonstrates China's use of domestically developed rockets for critical missions.  

## Body  
### Launch Details  
- **Date**: July 11, 2011  
- **Rocket**: Long March 3C  
- **Site**: Xichang Satellite Launch Center  

### Technical Specifications  
- **Satellite Class**: Tianlian I  
- **COSPAR ID**: 2011-032A  
- **SCN**: 37737  

### Mission Role  
- Provides data relay and tracking services for Chinese spacecraft.  
- Supports real-time communication between ground stations and satellites.  

### Related Entities  
- **Tianlian I Series**: A class of Chinese data relay satellites operational since 2003.  
- **Long March 3C**: The rocket used for Tianlian I-02's launch.

## References

1. Jonathan's Space Report