# Vigil

> proposed ESA space weather satellite

**Wikidata**: [Q48861014](https://www.wikidata.org/wiki/Q48861014)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Vigil_(space_mission))  
**Source**: https://4ort.xyz/entity/vigil

## Summary  
Vigil is a proposed space weather satellite developed by the European Space Agency (ESA) to monitor solar activity and space weather from a unique vantage point. It is designed to operate in a Lissajous orbit around the L5 Lagrange point of the Earth-Sun system, providing advanced early warning capabilities for solar storms. The mission is part of ESA’s Space Situational Awareness Programme and is also known by the alias "Lagrange."

## Key Facts  
- Official name: Vigil (also known as Lagrange)  
- Operator: European Space Agency (ESA)  
- Mission type: Solar observatory, solar probe, proposed entity  
- Orbit: Lissajous orbit around the L5 Earth-Sun Lagrange point (qualifier: P1145)  
- Part of: ESA's Space Situational Awareness Programme  
- Aliases: Lagrange  
- Instance of: Solar probe, solar observatory, proposed entity  
- Logo: [ESA Vigil mission patch](https://commons.wikimedia.org/wiki/Special:FilePath/ESA_Vigil_mission_patch.png)  
- Commons category: Vigil (spacecraft)  
- Wikipedia title: Vigil (space mission)  
- Available Wikipedia languages: English, German, French, Galician, Commons  
- Google Knowledge Graph ID: /g/11fk09rr76  

## FAQs  
### Q: What is the purpose of the Vigil mission?  
A: The Vigil mission aims to monitor space weather by observing the Sun and solar phenomena from the L5 Lagrange point. Its primary goal is to provide early warnings of solar storms that could affect Earth's technology and infrastructure.

### Q: When will the Vigil mission launch?  
A: As of now, Vigil is still in the proposal phase. No official launch date has been confirmed.

### Q: Where will the Vigil spacecraft be positioned?  
A: Vigil is planned to operate in a Lissajous orbit around the L5 Earth-Sun Lagrange point, offering a unique perspective on the Sun's activity.

## Why It Matters  
The Vigil mission plays a crucial role in advancing space weather forecasting, which is vital for protecting satellites, power grids, aviation systems, and astronauts in space. By positioning a solar observatory at the L5 Lagrange point, Vigil would offer continuous monitoring of the Sun's far side, enabling earlier detection of potentially harmful solar events like coronal mass ejections (CMEs). This capability would significantly improve preparedness and mitigation strategies across multiple technological sectors on Earth. As part of ESA’s broader efforts in space situational awareness, Vigil contributes to global resilience against the impacts of space weather.

## Notable For  
- First dedicated space weather mission positioned at the L5 Earth-Sun Lagrange point  
- Unique observational vantage point enabling full-view solar monitoring  
- Integration into ESA’s Space Situational Awareness Programme  
- Dual identity as both a solar probe and solar observatory  
- Proposed use of a Lissajous orbit for enhanced stability and coverage  

## Body  

### Overview  
Vigil is a proposed solar observatory mission led by the European Space Agency (ESA). Designed to enhance space weather monitoring, it will observe solar activities from a strategic location—the L5 Earth-Sun Lagrange point—offering unprecedented insight into solar behavior and improving forecasts of space weather events.

### Mission Objectives  
- Monitor solar wind and energetic particles  
- Track coronal mass ejections (CMEs) and solar flares  
- Provide early warnings of space weather disturbances  
- Support operational space weather services globally  

### Technical Details  
- **Orbit Type**: Lissajous orbit  
- **Target Location**: L5 Earth-Sun Lagrange point (qualifier: P1145)  
- **Mission Class**: Solar probe, solar observatory  
- **Status**: Proposed entity  

### Programmatic Context  
- **Part Of**: ESA Space Situational Awareness Programme  
- **Aliases**: Known also as "Lagrange"  
- **Logo**: [ESA Vigil mission patch](https://commons.wikimedia.org/wiki/Special:FilePath/ESA_Vigil_mission_patch.png)  

### Related Entities  
- **Instance Of**: Solar probe, solar observatory, proposed entity  
- **Wikidata Description**: Proposed ESA space weather satellite  
- **Wikipedia Languages Supported**: Commons, German, English, French, Galician  

### External References  
- **Google Knowledge Graph ID**: /g/11fk09rr76  
- **Commons Category**: Vigil (spacecraft)  
- **Wikipedia Title**: Vigil (space mission)  

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