# BS-3B
**Wikidata**: [Q11280970](https://www.wikidata.org/wiki/Q11280970)  
**Source**: https://4ort.xyz/entity/bs-3b

## Summary
BS-3B, also known as Yuri 3B, is a Japanese communications satellite launched on August 25, 1991, to support telecommunications and broadcasting services. It was deployed via an H-I rocket from the Tanegashima Space Center and operated until its last confirmed contact in 2000. As part of the Broadcasting Satellite series, it played a role in Japan's satellite communications infrastructure.

## Key Facts
- **Launch Date**: August 25, 1991
- **COSPAR ID**: 1991-060A
- **Satellite Catalog Number (SCN)**: 21668
- **Launch Vehicle**: H-I rocket
- **Launch Site**: Tanegashima Space Center, Japan
- **Aliases**: Yuri 3B, Broadcasting Satellite-3B
- **Type**: Communications satellite
- **Operational Lifespan**: 1991–2000 (last contact)

## FAQs
### Q: When was BS-3B launched and how was it deployed?
A: BS-3B was launched on August 25, 1991, aboard an H-I rocket from Japan's Tanegashima Space Center.

### Q: What was the primary purpose of BS-3B?
A: BS-3B was designed to provide telecommunications and broadcasting services as part of Japan's satellite communications network.

### Q: Is BS-3B still operational?
A: BS-3B's last confirmed contact was in 2000, indicating it is no longer operational.

## Why It Matters
BS-3B represents a key component of Japan's advancements in satellite technology during the 1990s. As a communications satellite, it supported critical infrastructure for broadcasting and telecommunications, contributing to the expansion of media and connectivity services in Japan. Its launch on the H-I rocket also highlighted Japan's domestic rocket development capabilities. While its operational lifespan concluded in 2000, BS-3B exemplifies the role of satellites in bridging communication gaps and fostering technological progress, underscoring the importance of space-based assets in modern infrastructure.

## Notable For
- **Part of the Broadcasting Satellite Series**: Designed to enhance Japan's broadcasting capabilities.
- **Use of H-I Rocket**: Demonstrated Japan's indigenous launch vehicle technology.
- **Nine-Year Operational Span**: Provided nearly a decade of service, exceeding some satellite lifespan expectations of the era.

## Body
### Launch Details
- **Date**: August 25, 1991
- **Launch Vehicle**: H-I (Japanese liquid-fueled carrier rocket)
- **Launch Site**: Tanegashima Space Center, Japan

### Satellite Specifications
- **Identifiers**:
  - COSPAR ID: 1991-060A
  - SCN: 21668
- **Aliases**: Yuri 3B, Broadcasting Satellite-3B
- **Type**: Communications satellite

### Mission and Operations
- **Purpose**: Telecommunications and broadcasting services
- **Operational Period**: 1991–2000 (last contact)
- **Significance**: Contributed to Japan's communication infrastructure during the 1990s, supporting media distribution and connectivity.

## References

1. Jonathan's Space Report