# Atlas V 421

> United Launch Alliance launch vehicle

**Wikidata**: [Q16351985](https://www.wikidata.org/wiki/Q16351985)  
**Source**: https://4ort.xyz/entity/atlas-v-421

## Summary
The Atlas V 421 is a rocket model and part of the Atlas V class of expendable launch systems developed by the United Launch Alliance. It is designed to carry payloads into space, including satellites for scientific research, communications, and military purposes.

## Key Facts
- The Atlas V 421 is a variant of the Atlas V launch vehicle.
- It is classified as a rocket model and a subclass of the Atlas V.
- The Atlas V 421 has been used to launch various satellites, including the Magnetospheric Multiscale Mission, Morelos 3, and several military communications satellites.
- It is associated with the United Launch Alliance, a joint venture between Lockheed Martin and Boeing.
- The Atlas V 421 has a sitelink count of 2 on Wikidata, indicating its presence in multiple language editions of Wikipedia.

## FAQs
### Q: What is the Atlas V 421?
A: The Atlas V 421 is a rocket model and part of the Atlas V class of expendable launch systems developed by the United Launch Alliance. It is used to launch various satellites into space.

### Q: What types of satellites has the Atlas V 421 launched?
A: The Atlas V 421 has launched a variety of satellites, including scientific research satellites like the Magnetospheric Multiscale Mission, communications satellites like Morelos 3, and military communications satellites such as USA-269 and USA-315.

### Q: Who developed the Atlas V 421?
A: The Atlas V 421 was developed by the United Launch Alliance, a joint venture between Lockheed Martin and Boeing.

### Q: What is the significance of the Atlas V 421?
A: The Atlas V 421 plays a crucial role in launching satellites for scientific research, communications, and military purposes, contributing to advancements in space technology and national security.

### Q: How many language editions of Wikipedia have an article on the Atlas V 421?
A: The Atlas V 421 has a sitelink count of 2 on Wikidata, indicating its presence in multiple language editions of Wikipedia, specifically in Latvian (lv) and Commons.

## Why It Matters
The Atlas V 421 is a significant launch vehicle in the field of space exploration and satellite deployment. It has been instrumental in launching various satellites that serve critical functions in scientific research, communications, and military operations. The Magnetospheric Multiscale Mission, for example, has provided valuable data on the Earth's magnetosphere, enhancing our understanding of space weather and its impact on technology. Communications satellites like Morelos 3 have improved global connectivity, while military satellites have bolstered national security. The Atlas V 421's reliability and versatility make it a key player in the advancement of space technology and its applications.

## Notable For
- Launching the Magnetospheric Multiscale Mission, a constellation of satellites dedicated to studying the Earth's magnetosphere.
- Deploying the Morelos 3 communications satellite, which has enhanced connectivity in Mexico.
- Supporting military operations through the launch of satellites like USA-269 and USA-315.
- Being a part of the Atlas V class of launch vehicles, known for their reliability and versatility.
- Contributing to advancements in space technology and scientific research.

## Body
### Overview
The Atlas V 421 is a rocket model and a variant of the Atlas V class of expendable launch systems. It is developed and operated by the United Launch Alliance (ULA), a joint venture between Lockheed Martin and Boeing. The Atlas V 421 is designed to carry payloads into space, including satellites for scientific research, communications, and military purposes.

### Launch History
The Atlas V 421 has been used to launch several notable satellites:
- **Magnetospheric Multiscale Mission (MMS)**: A constellation of four spacecraft dedicated to studying the Earth's magnetosphere. The MMS was launched on March 12, 2015.
- **Morelos 3**: A Mexican communications satellite launched on October 2, 2015. It provides enhanced connectivity and communication services in Mexico.
- **USA-269**: An American military communications satellite launched on January 20, 2016.
- **USA-315**: A United States military satellite launched on May 17, 2021.
- **ICO G1**: A communications satellite launched on April 14, 2008.
- **USA-204**: A United States Space Force military communications satellite constellation launched on September 8, 2010.
- **USA-195**: An American military communications satellite launched on November 21, 2009.

### Technical Specifications
The Atlas V 421 is characterized by its configuration, which includes a 4-meter diameter payload fairing, two solid rocket boosters, and a single-engine Centaur upper stage. This configuration provides the necessary thrust and payload capacity for a variety of missions.

### Significance
The Atlas V 421 has played a crucial role in advancing space technology and scientific research. Its ability to launch diverse payloads, from scientific research satellites to military communications satellites, highlights its versatility and reliability. The data collected by satellites launched by the Atlas V 421, such as the Magnetospheric Multiscale Mission, have contributed to our understanding of space weather and its impact on technology. Additionally, the deployment of communications satellites has improved global connectivity, while military satellites have bolstered national security.

## Schema Markup
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