# picosatellite

> miniaturized artificial satellite generally less than 1 kg

**Wikidata**: [Q10349628](https://www.wikidata.org/wiki/Q10349628)  
**Source**: https://4ort.xyz/entity/picosatellite

## Summary  
A **picosatellite** is a miniaturized artificial satellite that typically weighs less than 1 kg. It belongs to the broader class of artificial satellites and sits between femtosatellites (smaller) and nanosatellites (larger) in the satellite size hierarchy.

## Key Facts  
- **Mass limit:** Generally under 1 kg.  
- **Classification:** Instance of the spacecraft class; subclass of *artificial satellite* and *miniature object*.  
- **Parent class:** Part of the *artificial satellite* family and related to the *PocketQube* type of miniaturized satellite.  
- **Size hierarchy:** Follows the *femtosatellite* class and is followed by the *nanosatellite* class.  
- **Aliases:** Also known as “picosat”.  
- **Identifiers:** GND (Gemeinsame Normdatei) ID 4456134‑9 (broad match).  
- **Language coverage:** Has a Portuguese Wikipedia entry (pt).  
- **Related missions:** The former Hungarian picosatellite **MRC‑100** and Brazil’s **Tancredo‑1** are examples of picosatellites.  

## FAQs  
### Q: What exactly is a picosatellite?  
A: A picosatellite is a very small, human‑made satellite whose total mass is usually less than 1 kg, designed for low‑cost space missions.  

### Q: How does a picosatellite differ from a nanosatellite?  
A: While both are miniaturized, a picosatellite is smaller, weighing under 1 kg, whereas nanosatellites typically range from 10 kg to 20 kg.  

### Q: What are common uses for picosatellites?  
A: They are often employed for technology demonstrations, scientific experiments, and educational projects because their low mass makes launch affordable and integration simple.  

### Q: Is a picosatellite the same as a PocketQube?  
A: A picosatellite can be built to the PocketQube form factor, but “PocketQube” refers specifically to a standardized size and deployment mechanism within the broader picosatellite category.  

### Q: What satellite class is smaller than a picosatellite?  
A: The *femtosatellite* class is smaller, representing ultra‑miniature satellites of even lower mass.  

## Why It Matters  
Picosatellites democratize access to space by dramatically reducing the cost and complexity of satellite development and launch. Their sub‑kilogram mass allows them to hitch rides on a wide variety of launch vehicles, including rideshare missions and even larger satellite deployments. This affordability enables universities, small companies, and emerging space nations to conduct experiments, validate new technologies, and gather scientific data that would otherwise be prohibitive. By filling the niche between femtosatellites and nanosatellites, picosatellites expand the design space for innovative missions, fostering rapid iteration and fostering a more diverse ecosystem of space actors. Their impact is evident in pioneering projects such as Hungary’s MRC‑100 and Brazil’s Tancredo‑1, which showcase the practical viability of ultra‑small spacecraft for real‑world applications.  

## Notable For  
- **Ultra‑low mass:** Weighs less than 1 kg, making it the lightest practical satellite class for many missions.  
- **Bridge role:** Sits between femtosatellites and nanosatellites, offering a balance of capability and cost.  
- **PocketQube compatibility:** Frequently built to the PocketQube standard, enabling standardized deployment.  
- **Early adopters:** Used in pioneering national programs like Hungary’s MRC‑100 and Brazil’s Tancredo‑1.  
- **Broad identification:** Recognized across multiple data systems (GND ID 4456134‑9, alias “picosat”).  

## Body  

### Definition and Scope  
- A picosatellite is defined as a miniaturized artificial satellite with a typical mass **< 1 kg**.  
- It is classified as a **spacecraft class** and a **miniature object** within the artificial satellite hierarchy.  

### Classification Hierarchy  
- **Parent class:** *Artificial satellite* – any human‑made object placed into orbit.  
- **Sibling class:** *PocketQube* – a specific form factor often used for picosatellites.  
- **Preceded by:** *Femtosatellite* (smaller, ultra‑miniature).  
- **Followed by:** *Nanosatellite* (generally 10–20 kg).  

### Physical Characteristics  
- **Mass:** < 1 kg (the primary defining metric).  
- **Form factors:** Frequently built to the PocketQube dimensions (5 cm × 5 cm × 5 cm), though other small configurations exist.  

### Identification and Metadata  
| Property | Value |
|----------|-------|
| GND ID | 4456134‑9 (broad match) |
| Alias | picosat |
| Instance of | spacecraft class |
| Subclass of | artificial satellite, miniature object |
| Wikipedia language | Portuguese (pt) |
| Google Knowledge Graph ID | /g/120t4qmc |

### Example Missions  
- **MRC‑100:** A former Hungarian picosatellite that demonstrated the feasibility of ultra‑small spacecraft for national research.  
- **Tancredo‑1:** Brazil’s first picosatellite, used for technology validation and educational outreach.  

### Advantages and Limitations  
- **Advantages:** Low launch cost, rapid development cycles, ability to piggyback on larger missions, and suitability for educational programs.  
- **Limitations:** Restricted payload capacity, limited power generation, and shorter operational lifespans compared to larger satellites.  

### Standards and Development  
- The **PocketQube** standard provides a common mechanical and deployment interface, encouraging interoperability among picosatellite projects.  
- Development tools and open‑source flight software have lowered barriers for universities and small enterprises.  

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "picosatellite",
  "description": "Miniaturized artificial satellite generally less than 1 kg."
}