# Beidou-3 M2S

> satellite

**Wikidata**: [Q21663527](https://www.wikidata.org/wiki/Q21663527)  
**Source**: https://4ort.xyz/entity/beidou-3-m2s

## Summary
Beidou-3 M2S is an artificial navigation satellite and a component of the Chinese Beidou satellite navigation system. Launched on July 25, 2015, from the Xichang Satellite Launch Center, it was delivered into orbit aboard a Long March 3B carrier rocket. The satellite is also identified by the designations BEIDOU-3 M2, BD-19, and BEIDOU-3S M1S.

## Key Facts
- **Classification:** Beidou-3 M2S is classified as both an artificial satellite and a navigation satellite.
- **Parent System:** It is a part of the BeiDou satellite navigation system.
- **Launch Date:** The satellite was launched on July 25, 2015.
- **Launch Vehicle:** It was deployed using a Long March 3B orbital carrier rocket.
- **Launch Site:** The launch originated from the Xichang Satellite Launch Center.
- **COSPAR ID:** Its international satellite designator is 2015-037B.
- **Satellite Catalog Number (SCN):** It is tracked under number 40749.
- **Alternate Names:** The entity is also known by the aliases BEIDOU-3 M2, BD-19, and BEIDOU-3S M1S.

## FAQs
### Q: When was Beidou-3 M2S launched?
A: Beidou-3 M2S was launched on July 25, 2015. This event took place at the Xichang Satellite Launch Center.

### Q: What rocket was used to deploy Beidou-3 M2S?
A: The satellite was launched aboard a Long March 3B rocket, which is a Chinese orbital carrier rocket.

### Q: What is the purpose of Beidou-3 M2S?
A: Beidou-3 M2S is a navigation satellite designed to function as a human-made object in orbit. It operates as part of the wider BeiDou satellite system.

## Why It Matters
Beidou-3 M2S serves as a specific operational unit within the BeiDou navigation system, contributing to the network's ability to provide positioning and timing data. As a navigation satellite launched in mid-2015, it represents a specific phase in the development of China's orbital infrastructure. The satellite's deployment via the Long March 3B rocket highlights the reliance on this specific launch vehicle for inserting navigation payloads into their required orbits.

The existence of multiple aliases for this entity—specifically the reference to "Beidou-3S M1S"—indicates its specific role or version within the broader third-generation expansion of the BeiDou network. By maintaining a tracked presence in orbit (cataloged under SCN 40749), the satellite aids in the geometric distribution of the constellation, which is essential for the accuracy and reliability of global navigation satellite services. Its launch from the Xichang Satellite Launch Center further underscores that facility's ongoing role in China's space navigation programs.

## Notable For
- Being a distinct component of the **BeiDou** navigation system.
- Its deployment via the **Long March 3B** launch vehicle.
- Holding the specific **COSPAR ID 2015-037B**.
- Being tracked internationally under **Satellite Catalog Number 40749**.
- Having multiple aliases, including **BD-19** and **BEIDOU-3S M1S**.

## Body
### Identity and Designation
Beidou-3 M2S is formally recognized as an artificial satellite and a navigation satellite. In international catalogs, it is identified by the COSPAR ID `2015-037B` and the Satellite Catalog Number `40749`. The satellite is associated with the Wolfram Language entity code `Entity["Satellite", "40749"]`. It is also referenced by several aliases, including:
*   BEIDOU-3 M2
*   BD-19
*   BEIDOU-3S M1S

### Launch and Deployment
The satellite was successfully launched on **July 25, 2015**. The mission utilized a **Long March 3B** rocket, a class of Chinese orbital carrier rocket, to deliver the payload. The launch event took place at the **Xichang Satellite Launch Center**, which served as the start point for the mission.

### System Context
Beidou-3 M2S functions as a part of the **BeiDou** system. It is classified as a human-made object put into orbit to facilitate navigation capabilities. The significant event associated with this entity is the rocket launch conducted in late July 2015.

## References

1. Jonathan's Space Report