# USA-64

> American navigation satellite used for GPS

**Wikidata**: [Q7865701](https://www.wikidata.org/wiki/Q7865701)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/USA-64)  
**Source**: https://4ort.xyz/entity/usa-64

## Summary
USA-64 is an American navigation satellite used for the Global Positioning System (GPS). Launched on October 1, 1990, it is also known by the designations Navstar 2-09 and Navstar 21. The satellite was manufactured by Rockwell International and operated by the United States Air Force.

## Key Facts
- **Classification:** USA-64 is a GPS satellite (Navstar).
- **Launch Date:** October 1, 1990.
- **Launch Vehicle:** Delta II (retired expendable launch system).
- **Launch Site:** Cape Canaveral Space Launch Complex 17.
- **Manufacturer:** Rockwell International.
- **Operator:** United States Air Force.
- **Country:** United States.
- **COSPAR ID:** 1990-088A.
- **Satellite Catalog Number (SCN):** 20830.
- **Aliases:** Navstar 2-09, Navstar 21.

## FAQs
### Q: What is USA-64?
A: USA-64 is an American navigation satellite that functions as part of the Global Positioning System (GPS). It was launched in 1990 to support the United States Air Force's satellite navigation network.

### Q: When and how was USA-64 launched?
A: USA-64 was launched on October 1, 1990, using a Delta II rocket. The launch took place at Cape Canaveral Space Launch Complex 17.

### Q: Who manufactured and operates USA-64?
A: The satellite was manufactured by Rockwell International and is operated by the United States Air Force.

## Why It Matters
USA-64 serves as a specific unit within the broader NAVSTAR Global Positioning System, contributing to the constellation of satellites that provide essential positioning, navigation, and timing data. As a product of Rockwell International launched aboard a Delta II rocket, it represents the technological infrastructure deployed by the United States during the 1990s to expand and maintain global navigation capabilities.

The satellite's launch from Cape Canaveral marks it as a component of critical aerospace history managed by the United States Air Force. While specific operational details of individual GPS satellites are often technical, USA-64's inclusion in the system underscores the ongoing requirement for robust satellite networks to support military and civilian navigation needs. Its identification numbers (COSPAR ID 1990-088A and SCN 20830) allow precise tracking and management within the international Space Catalog.

## Notable For
- **GPS Constellation Component:** Identified specifically as a "GPS satellite" utilized by the NAVSTAR Global Positioning System.
- **Specific Designations:** Uniquely identified by the aliases Navstar 2-09 and Navstar 21.
- **Launch Configuration:** Deployed via the Delta II launch system, a prominent retired expendable rocket family.
- **Historical Tracking:** Distinguished by its specific COSPAR ID (1990-088A) and Satellite Catalog Number (20830).

## Body

### Identity and Classification
USA-64 is formally classified as a GPS satellite. It falls under the broader category of artificial satellites used by the NAVSTAR Global Positioning System. In various records, it is cross-referenced by the aliases **Navstar 2-09** and **Navstar 21**. Its Wolfram Language entity code is `Entity["Satellite", "20830"]`.

### Launch and Deployment
The satellite was launched on **October 1, 1990**. The deployment was executed using a **Delta II** rocket, a now-retired expendable launch system manufactured by the Delta rocket family. The launch originated from **Cape Canaveral Space Launch Complex 17**. This event is cataloged as a "rocket launch" significant event in satellite tracking databases.

### Technical and Administrative Details
- **International Identifiers:** The satellite holds the COSPAR ID **1990-088A** and the Satellite Catalog Number (SCN) **20830**.
- **Ownership and Operation:** The country of origin and operation is the **United States**. The specific operator listed is the **United States Air Force**.
- **Manufacturing:** The spacecraft was built by **Rockwell International**.

## References

1. Jonathan's Space Report