# USA-275

> United States Space Force military communications satellite constellation

**Wikidata**: [Q107176512](https://www.wikidata.org/wiki/Q107176512)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/USA-275)  
**Source**: https://4ort.xyz/entity/usa-275

## Summary
USA-275 is a military communications satellite constellation operated by the United States Space Force. Launched on March 19, 2017, it serves as an artificial satellite designed specifically for telecommunications purposes. The satellite was deployed into orbit using a Delta IV Medium+(5,4) launch vehicle.

## Key Facts
- **Entity Type:** Communications satellite (Artificial satellite designed for telecommunications).
- **Operator:** United States Space Force.
- **Launch Date:** March 19, 2017.
- **Launch Vehicle:** Delta IV Medium+(5,4).
- **COSPAR ID:** 2017-016A.
- **Satellite Catalog Number (SCN):** 42075.
- **Configuration:** Identified as a satellite constellation.

## FAQs
### Q: What is USA-275?
A: USA-275 is a military communications satellite constellation described as part of the United States Space Force's operations. It functions as an artificial satellite designed for telecommunications.

### Q: When was USA-275 launched?
A: The satellite was launched on March 19, 2017.

### Q: What rocket was used to launch USA-275?
A: USA-275 was launched using a Delta IV Medium+(5,4) rocket, which is a specific variant of the Delta IV space launch vehicle.

### Q: What are the identifying codes for USA-275?
A: The satellite holds the COSPAR ID 2017-016A and the Satellite Catalog Number (SCN) 42075.

## Why It Matters
USA-275 represents a specific asset within the United States Space Force's infrastructure dedicated to military communications. As a communications satellite, it plays a critical role in the transmission of data, likely supporting secure or specialized military telecommunications needs. The designation of USA-275 as a "constellation" implies it functions as part of a larger system, contributing to a network of orbital assets designed to provide robust coverage or capability.

The deployment of this satellite via the Delta IV Medium+(5,4) launch vehicle highlights the utilization of specific, medium-lift launch capabilities for inserting military payloads into orbit. Its launch in 2017 places it within the modern era of space operations, where the United States Space Force (though established officially in 2019, the description retroactively attributes the asset to the force or its predecessor entities) manages critical space-based infrastructure. The existence of such satellites underscores the strategic importance of space-based telecommunications in national defense and global military operations.

## Notable For
- **Military Telecommunications:** Designed specifically as a communications satellite for military use.
- **Launch Vehicle Configuration:** Utilized the Delta IV Medium+(5,4), a notable variant of the Delta launch family.
- **US Space Force Asset:** Identified as a constellation under the United States Space Force.
- **Orbital Identification:** Distinctly tracked via COSPAR ID 2017-016A and SCN 42075.

## Body
### Classification and Function
USA-275 is classified as an **communications satellite**, defined as an artificial satellite designed to relay and amplify radio telecommunications signals via a transponder. It operates under the jurisdiction of the **United States Space Force**. The raw description identifies the entity as a "constellation," suggesting that USA-275 may refer to a specific grouping of satellites or a system deployed in the 2017 launch.

### Launch Details
The satellite was successfully launched on **March 19, 2017**. The mission utilized the **Delta IV Medium+(5,4)** launch vehicle. This rocket is a specific variant of the Delta IV family, characterized by its 5-meter diameter payload fairing and 4 solid rocket motors (GEM-60). This configuration is frequently used for medium-class payloads requiring specific performance profiles to reach their intended orbits.

### Technical Identifiers
To facilitate tracking and cataloging, USA-275 is assigned the following standard identifiers:
*   **COSPAR International Designator:** 2017-016A. This code indicates it was the primary object (A) of the 16th successful launch of 2017.
*   **Satellite Catalog Number (SCN):** 42075. This is the sequential listing assigned by the US Space Command.

## References

1. Jonathan's Space Report