# USA 78

> 21873

**Wikidata**: [Q111499501](https://www.wikidata.org/wiki/Q111499501)  
**Source**: https://4ort.xyz/entity/usa-78

## Summary
USA 78 is an artificial satellite, which is a human-made object placed into orbit around Earth.

## Key Facts
- USA 78 is classified as an artificial satellite.
- It has the Wikidata identifier 21873.
- The Wolfram Language entity code for this satellite is Entity["Satellite", "21873"].
- It belongs to the category of human-made objects placed in Earth orbit.
- The satellite is part of the broader class of artificial satellites.

## FAQs
### Q: What is USA 78?
A: USA 78 is an artificial satellite, which is a human-made object placed into orbit around Earth.

### Q: What is the classification of USA 78?
A: USA 78 is classified as an artificial satellite.

### Q: What is the Wikidata identifier for USA 78?
A: The Wikidata identifier for USA 78 is 21873.

## Why It Matters
USA 78 represents a human-made object placed in Earth orbit, contributing to the broader field of artificial satellites. These satellites serve various purposes including communication, Earth observation, and scientific research. As part of this technology, USA 78 exemplifies the advancement of space technology and our ability to place objects in orbit for practical applications. The existence of such satellites has revolutionized global communication networks, weather forecasting, and scientific understanding of Earth and space systems.

## Notable For
- USA 78 is classified as an artificial satellite, distinguishing it from natural celestial bodies.
- It has a specific Wikidata identifier (21873) that serves as its unique reference in knowledge databases.
- The Wolfram Language entity code (Entity["Satellite", "21873"]) provides a standardized identifier for computational and knowledge representation purposes.
- It belongs to the category of human-made objects intentionally placed in Earth's orbit.

## Body
### Technical Classification
USA 78 is categorized as an artificial satellite, which is a human-made object intentionally placed into orbit around Earth. This classification distinguishes it from natural celestial bodies like planets, moons, and asteroids.

### Knowledge Database Identifiers
The satellite has been cataloged in multiple knowledge systems:
- **Wikidata**: The entity has the identifier 21873, which serves as its unique reference in the Wikidata knowledge graph.
- **Wolfram Language**: It is represented by the entity code Entity["Satellite", "21873"], enabling computational access and analysis.

### Orbital Purpose
As an artificial satellite, USA 78 is designed to operate in Earth's orbit, potentially serving functions such as communication relay, Earth observation, or scientific research. The specific mission and operational parameters of USA 78 would depend on its design and deployment objectives.

### Technical Specifications
While the source material doesn't provide detailed technical specifications, the classification as an artificial satellite implies it has propulsion systems, communication equipment, and structural components necessary for orbital operation. The exact dimensions, weight, and power generation capabilities would be documented in its technical specifications.

### Historical Context
USA 78 represents one of many artificial satellites launched throughout the history of space exploration. The development of such satellites has been driven by technological advancements and increasing human interest in space utilization for practical applications. Its existence contributes to the broader narrative of space technology development and international space cooperation.