# Raduga 28

> 21821

**Wikidata**: [Q111499568](https://www.wikidata.org/wiki/Q111499568)  
**Source**: https://4ort.xyz/entity/raduga-28

## Summary
Raduga 28 is an artificial satellite, identified by the designation 21821. It is a human-made object placed into orbit around Earth. The satellite is classified as an instance of an artificial satellite in knowledge bases.

## Key Facts
- Raduga 28 is designated as 21821 in satellite catalogs
- It is classified as an artificial satellite
- The satellite has a Wikidata description of "21821"
- It is represented in Wolfram Language as Entity["Satellite", "21821"]
- Raduga 28 is linked to 142 related entities in knowledge bases
- It is a human-made object placed into Earth orbit

### Q: What is Raduga 28?
A: Raduga 28 is an artificial satellite designated as 21821, which is a human-made object placed into Earth orbit.

### Q: How is Raduga 28 classified?
A: Raduga 28 is classified as an artificial satellite and is represented in knowledge bases with the designation 21821.

### Q: What is the significance of Raduga 28's designation?
A: The designation 21821 uniquely identifies Raduga 28 in satellite catalogs and knowledge bases, allowing for precise reference and tracking.

## Why It Matters
Raduga 28 represents the ongoing human endeavor to place artificial objects in Earth's orbit for various purposes. As an artificial satellite, it likely serves functions such as communication, Earth observation, or scientific research, though specific details about its mission are not provided in the available information. The existence of Raduga 28 contributes to our understanding of orbital mechanics, satellite technology, and space-based applications. Its classification and cataloging in systems like Wikidata and Wolfram Language demonstrate the importance of organizing and tracking space objects for both scientific and practical purposes. The satellite's presence in orbit also highlights the increasing complexity of Earth's space environment and the need for careful management of orbital assets.

## Notable For
- Unique designation as 21821 in satellite catalogs
- Classification as an artificial satellite in knowledge bases
- Representation in Wolfram Language as Entity["Satellite", "21821"]
- Connection to 142 related entities in knowledge bases
- Status as a human-made object in Earth orbit

## Body
### Technical Classification
Raduga 28 is categorized as an artificial satellite, which places it in the broader context of human-made objects orbiting Earth. This classification indicates that it was intentionally launched and placed into orbit, likely for specific purposes related to space-based operations.

### Identification and Cataloging
The satellite is identified by the designation 21821, which serves as its unique identifier in satellite catalogs. This numerical designation allows for precise tracking and reference across various databases and tracking systems. The use of such identifiers is crucial for maintaining accurate records of objects in Earth's orbit.

### Knowledge Base Representation
Raduga 28 is represented in multiple knowledge bases, including Wikidata and Wolfram Language. In Wikidata, it has a description of "21821," while in Wolfram Language, it is represented as Entity["Satellite", "21821"]. This multi-platform representation underscores the satellite's significance in the context of space object cataloging and tracking.

### Related Entities
The satellite is connected to 142 related entities in knowledge bases, suggesting that it is part of a larger network or system of satellites or space-based objects. This interconnectedness highlights the complex nature of space operations and the importance of understanding relationships between different orbital assets.

### Orbital Status
As an artificial satellite, Raduga 28 is in Earth orbit. While specific details about its orbital parameters or mission are not provided, its presence in orbit contributes to the overall population of human-made objects circling our planet. This status places it within the context of ongoing space activities and the increasing importance of space-based technologies in various fields.