# Raduga 21

> 18631

**Wikidata**: [Q111500972](https://www.wikidata.org/wiki/Q111500972)  
**Source**: https://4ort.xyz/entity/raduga-21

## Summary
Raduga 21 is an artificial satellite identified by the catalog number 18631. It is classified as an artificial satellite, meaning it is a human-made object placed into orbit around Earth.

## Key Facts
- **Catalog Number**: 18631 (assigned by the North American Aerospace Defense Command)
- **Classification**: Artificial satellite (human-made object in orbit)
- **Wikidata Identifier**: Entity["Satellite", "18631"]
- **Instance of**: Artificial satellite (as per Wikidata classification)
- **Description**: "18631" (as per Wikidata entry)

## FAQs
### Q: What is Raduga 21?
A: Raduga 21 is an artificial satellite with the catalog number 18631. It is classified as a human-made object placed into orbit around Earth.

### Q: What does the catalog number 18631 mean?
A: The catalog number 18631 is assigned by the North American Aerospace Defense Command (NORAD) to identify this satellite in orbital tracking systems.

### Q: Is Raduga 21 still in orbit?
A: The provided source material does not specify the current status of Raduga 21. Orbital status would require additional data.

### Q: What is the significance of Raduga 21?
A: Raduga 21 is notable as an artificial satellite, contributing to the broader network of human-made objects in Earth's orbit. Its exact purpose or operational details are not provided in the source material.

### Q: How is Raduga 21 classified?
A: Raduga 21 is classified as an artificial satellite, meaning it is a human-made object designed to orbit Earth.

## Why It Matters
Raduga 21 is part of a vast network of artificial satellites that play critical roles in communication, navigation, Earth observation, and scientific research. As human-made objects in orbit, these satellites enable global connectivity, weather monitoring, and space exploration. While the specific purpose of Raduga 21 is not detailed in the source material, its existence contributes to the broader infrastructure of space-based technology. The cataloging of satellites like Raduga 21 is essential for tracking, collision avoidance, and managing space debris, ensuring the sustainable use of Earth's orbital environment.

## Notable For
- **Orbital Classification**: Raduga 21 is one of many artificial satellites cataloged by NORAD, highlighting its role in space surveillance and tracking.
- **Human-Made Object**: As an artificial satellite, it represents humanity's expansion into space, with applications in communication, research, and national security.
- **Catalog Number**: The assignment of 18631 by NORAD provides a unique identifier for tracking and reference in orbital mechanics.
- **Wikidata Recognition**: Raduga 21 is documented in Wikidata, indicating its relevance in structured knowledge databases.
- **Orbital Infrastructure**: The satellite contributes to the broader orbital infrastructure, supporting global and scientific endeavors.

## Body
### Identification
Raduga 21 is identified by the catalog number **18631**, assigned by the North American Aerospace Defense Command (NORAD). This number is used in orbital tracking systems to distinguish it from other objects in space.

### Classification
Raduga 21 is classified as an **artificial satellite**, meaning it is a human-made object placed into orbit around Earth. This classification aligns with its role in space-based technology and infrastructure.

### Wikidata Documentation
Raduga 21 is documented in Wikidata with the identifier **Entity["Satellite", "18631"]**. The Wikidata description for this entry is simply **"18631"**, reflecting its catalog number.

### Orbital Significance
As an artificial satellite, Raduga 21 is part of a larger network of human-made objects in orbit. These satellites support various applications, including communication, navigation, Earth observation, and scientific research. The cataloging of satellites like Raduga 21 is crucial for tracking, collision avoidance, and managing space debris.

### Future Research
While the source material does not provide details on Raduga 21's current status or specific mission, its inclusion in orbital tracking systems suggests ongoing relevance. Further research would be needed to determine its operational status, purpose, and contributions to space infrastructure.