# DASH

> pair of artificial satellites

**Wikidata**: [Q109591975](https://www.wikidata.org/wiki/Q109591975)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/DASH_(satellite))  
**Source**: https://4ort.xyz/entity/dash

## Summary  
DASH is a pair of artificial satellites designed for atmospheric measurements. The mission consists of two spacecraft: DASH-1 and DASH-2, each with a length of 2.5 meters.

## Key Facts  
- Quantity: 2 satellites (DASH-1 and DASH-2).  
- Length: 2.5 meters per satellite.  
- Aliases: Density and Scale Height.  
- Classification: Subclass of artificial satellite.  
- Related Entities: DASH-1 (sitelink count: 3), DASH-2 (sitelink count: 4).  
- Data Source: Specifications referenced from [SpaceRocket.de](https://space.skyrocket.de/doc_sdat/dash-1.htm) as of August 23, 2022.  
- Sitelink Count: 1 (for the DASH entity collectively).  

## FAQs  
### Q: What is DASH?  
A: DASH is a mission comprising two artificial satellites (DASH-1 and DASH-2) focused on atmospheric density and scale height measurements.  

### Q: How many satellites are in the DASH mission?  
A: The mission consists of exactly two satellites: DASH-1 and DASH-2.  

### Q: What is the physical size of DASH satellites?  
A: Each satellite measures 2.5 meters in length.  

### Q: What other names is DASH known by?  
A: DASH is also referred to by its aliases, Density and Scale Height.  

### Q: How does DASH relate to artificial satellites?  
A: DASH is classified as a subclass of artificial satellites, confirming its status as a human-made orbital object.  

## Why It Matters  
DASH addresses the critical need for precise atmospheric density and scale height data in low Earth orbit. By providing detailed measurements from two synchronized satellites, the mission enables researchers to calibrate atmospheric models and improve spacecraft trajectory predictions. This data is essential for satellite longevity, orbital debris mitigation, and optimizing satellite operations in the increasingly crowded space environment.  

## Notable For  
- Dual-Satellite Design: Uniquely operates as a synchronized pair for correlated atmospheric measurements.  
- Compact Scale: At 2.5 meters in length, represents a streamlined, specialized satellite class.  
- Nomenclature: Uses functional aliases ("Density and Scale Height") reflecting its scientific purpose.  
- Shared Classification: Explicitly defined as a subclass of artificial satellites, emphasizing its technical niche.  

## Body  
### Overview  
DASH is a constellation of two artificial satellites (DASH-1 and DASH-2) dedicated to atmospheric research. The mission is classified under the broader category of artificial satellites.  

### Technical Specifications  
- **Length**: 2.5 meters per satellite, with data sourced from SpaceRocket.de (2022).  
- **Quantity**: Exactly two satellites, verified via the same reference.  
- **Aliases**: Officially designated as "Density and Scale Height," reflecting its scientific objectives.  

### Related Entities  
- **DASH-1**: A standalone satellite entity with 3 sitelinks.  
- **DASH-2**: A standalone satellite entity with 4 sitelinks.  

### Classification  
DASH is explicitly documented as a subclass of artificial satellites, confirming its role as a human-made orbital object. This classification is referenced from SpaceRocket.de (2022).

## References

1. [Source](https://space.skyrocket.de/doc_sdat/dash-1.htm)