# Iridium 81

> 25468

**Wikidata**: [Q111498110](https://www.wikidata.org/wiki/Q111498110)  
**Source**: https://4ort.xyz/entity/iridium-81

## Summary
Iridium 81 is an artificial satellite identified by the catalogue number 25468. It belongs to the family of human-made objects placed into Earth orbit for communication, navigation, or scientific purposes.

## Key Facts
- Catalogue number: 25468
- Instance of: artificial satellite
- Wolfram Language entity code: Entity["Satellite", "25468"]

## FAQs
### Q: What is Iridium 81?
A: Iridium 81 is the designation for satellite catalogue entry 25468, an artificial satellite currently in orbit.

### Q: How is Iridium 81 referenced in technical databases?
A: Standard catalogues list it as object 25468; Wolfram Language encodes it as Entity["Satellite", "25468"].

### Q: Is Iridium 81 part of a larger constellation?
A: The provided data do not specify constellation membership; only its classification as an artificial satellite is confirmed.

## Why It Matters
Artificial satellites numbered in sequence like 25468 form the backbone of modern orbital infrastructure. Each unique catalogue entry—Ir bulletin 81 among them—represents a trackable, human-made object whose position and status must be monitored for collision avoidance, spectrum coordination, and space-traffic management. Even when detailed mission data are absent, the mere fact of a satellite’s presence in the global catalogue ensures it is accounted for in international databases used by operators, astronomers, and policy makers. Iridium 81 therefore contributes, at minimum, to the statistical population of active or defunct hardware circling Earth, influencing models of space-debris evolution and long-term sustainability of outer-space activities.

## Notable For
- Bears the concise identifier “Iridium 81” while being catalogued under the numeric ID 25468
- Listed within Wolfram’s curated satellite entity set, making it directly computable in Mathematica and related environments
- Serves as a data point in the worldwide artificial-satellite population count

## Body
### Designation and Catalogue Identity
Iridium 81 is registered in public satellite catalogues under the sequential number 25468. This numeric tag is the primary reference used by space-surveillance networks when tracking the object’s orbital position, velocity, and predicted trajectory.

### Classification
The entity is typed as an artificial satellite, the umbrella class for all human-made objects purposely injected into orbit. No additional subclass (e.g., communication, navigation, scientific) is provided in the available data.

### Machine-Readable Identifier
Wolfram Research includes Iridium 81 in its knowledge base as Entity["Satellite", "25468"]. Programmers and data scientists can therefore call this token to obtain any dynamically updated properties Wolfram may add over time.