# Tansei

> Japanese artificial satellite

**Wikidata**: [Q3249415](https://www.wikidata.org/wiki/Q3249415)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tansei)  
**Source**: https://4ort.xyz/entity/tansei

## Summary
Tansei is a Japanese artificial satellite launched on February 16, 1971, from Uchinoura Space Center using an M-4S carrier rocket. It was designed as a technology demonstration spacecraft to test experimental technologies in orbit. The satellite is also known by multiple aliases including Tansei-2, Tansei-3, Tansei 4, and MS-T1 through MS-T4.

## Key Facts
- Launched on February 16, 1971, from Uchinoura Space Center in Japan
- Classified as a technology demonstration spacecraft for testing experimental technologies
- Launched using an M-4S Japanese carrier rocket
- Has multiple aliases including Tansei-2, Tansei-3, Tansei 4, MS-T1, MS-T2, MS-T3, and MS-T4
- Assigned COSPAR ID 1971-011A for international satellite identification
- Available in 7 languages on Wikipedia including English, French, Japanese, and Polish
- Part of Japan's early satellite development program in the 1970s

## FAQs
### Q: What was the purpose of the Tansei satellite?
A: Tansei was a technology demonstration spacecraft designed to test experimental technologies in orbit. It was part of Japan's early satellite development efforts to advance their space capabilities.

### Q: When and where was Tansei launched?
A: Tansei was launched on February 16, 1971, from Uchinoura Space Center in Japan using an M-4S carrier rocket.

### Q: What are the different versions of Tansei?
A: Tansei has multiple versions and aliases including Tansei-2, Tansei-3, Tansei 4, and MS-T1 through MS-T4, though specific details about each version are not provided in the source material.

## Why It Matters
Tansei represents an important milestone in Japan's space program development during the early 1970s. As a technology demonstration spacecraft, it played a crucial role in advancing Japan's capabilities in satellite technology and space exploration. The successful launch and operation of Tansei helped establish Japan as a capable spacefaring nation and contributed to the development of more sophisticated satellite systems in subsequent years. Its use of the M-4S carrier rocket also demonstrates Japan's growing expertise in both satellite and launch vehicle technology during this period.

## Notable For
- One of Japan's early artificial satellites launched in 1971
- Technology demonstration spacecraft testing experimental orbital technologies
- Multiple versions and aliases indicating a series of related satellites
- Launched using Japan's M-4S carrier rocket, showcasing domestic launch capabilities
- Available in multiple languages on Wikipedia, indicating international recognition

## Body
### Launch Details
Tansei was launched on February 16, 1971, from Uchinoura Space Center, which is Japan's primary space launch facility located in Kagoshima Prefecture. The launch vehicle used was the M-4S, a Japanese carrier rocket developed domestically.

### Technical Classification
The satellite is classified as a technology demonstration spacecraft, which means its primary purpose was to test and validate new technologies in the space environment. This classification indicates that Tansei was likely used to evaluate various systems and components before they were incorporated into operational satellites.

### Identification and Documentation
Tansei has been assigned the COSPAR ID 1971-011A, which is the international standard for identifying artificial objects in space. The satellite has extensive documentation across multiple platforms, with Wikipedia pages available in seven different languages including English, French, Japanese, and Polish.

### Naming Conventions
The satellite is known by numerous aliases including Tansei-2, Tansei-3, Tansei 4, and MS-T1 through MS-T4. The Japanese names たんせい1 and たんせい1号 are also used. This variety of names suggests either multiple satellites in a series or different naming conventions used by various organizations or over time.

## References

1. Jonathan's Space Report