# Harmony B

> planned ESA Earth observation satellite

**Wikidata**: [Q134281411](https://www.wikidata.org/wiki/Q134281411)  
**Source**: https://4ort.xyz/entity/harmony-b

## Summary
Harmony B is a planned Earth observation satellite developed by the European Space Agency (ESA) as part of the Harmony mission. It is designed to operate in a sun-synchronous orbit and is being manufactured by OHB System AG as the prime contractor. The satellite is part of ESA's Earth Explorer program and is powered by two spacecraft solar arrays.

## Key Facts
- **Class**: Earth observation satellite
- **Operator**: European Space Agency (ESA)
- **Power Source**: Two spacecraft solar arrays
- **Orbit**: Sun-synchronous orbit
- **Manufacturer**: OHB System AG (prime contractor)
- **Aliases**: Earth Explorer 10B, Discordia
- **Status**: Proposed entity
- **Part of**: Harmony mission

## FAQs
### Q: What is the purpose of Harmony B?
A: Harmony B is an Earth observation satellite designed to monitor and study Earth from orbit, contributing to environmental research and data collection.

### Q: Who is building Harmony B?
A: Harmony B is being manufactured by OHB System AG, with the European Space Agency (ESA) as the operator.

### Q: What type of orbit will Harmony B use?
A: Harmony B will operate in a sun-synchronous orbit, which is commonly used for Earth observation satellites to ensure consistent lighting conditions for imaging.

### Q: How is Harmony B powered?
A: Harmony B is powered by two spacecraft solar arrays, which provide the necessary energy for its operations.

### Q: What is the status of Harmony B?
A: Harmony B is a proposed entity, meaning it is currently in the planning or development phase.

## Why It Matters
Harmony B is significant as part of the ESA's Earth observation program, which aims to provide critical data for environmental monitoring, climate research, and disaster management. By operating in a sun-synchronous orbit, Harmony B will ensure consistent and high-quality observations of Earth's surface. The satellite's development and deployment will contribute to the broader goal of understanding and addressing global environmental challenges. As a proposed entity, Harmony B represents the ESA's commitment to advancing Earth science and technology, ensuring that future missions will build on existing knowledge and capabilities.

## Notable For
- **Part of the Harmony mission**: Harmony B is one of the satellites in the Harmony mission, which includes other Earth observation satellites.
- **Sun-synchronous orbit**: The satellite's orbit ensures consistent lighting conditions for imaging, which is crucial for accurate Earth observation.
- **Powered by solar arrays**: The use of two spacecraft solar arrays demonstrates the satellite's reliance on renewable energy sources for its operations.
- **Proposed entity**: Harmony B is currently in the planning or development phase, indicating its role in future Earth observation missions.

## Body
### Overview
Harmony B is a planned Earth observation satellite developed by the European Space Agency (ESA) as part of the Harmony mission. It is designed to operate in a sun-synchronous orbit, which allows for consistent and high-quality observations of Earth's surface. The satellite is being manufactured by OHB System AG, with the ESA serving as the operator.

### Technical Specifications
- **Power Source**: Harmony B is powered by two spacecraft solar arrays, which provide the necessary energy for its operations.
- **Orbit**: The satellite will operate in a sun-synchronous orbit, ensuring consistent lighting conditions for imaging.
- **Manufacturer**: OHB System AG is the prime contractor responsible for the satellite's development and construction.

### Mission and Purpose
- **Earth Observation**: Harmony B is designed to monitor and study Earth from orbit, contributing to environmental research and data collection.
- **Part of Harmony Mission**: The satellite is one of the components of the Harmony mission, which includes other Earth observation satellites.

### Status and Development
- **Proposed Entity**: Harmony B is currently in the planning or development phase, indicating its role in future Earth observation missions.
- **Aliases**: The satellite is also known by the aliases Earth Explorer 10B and Discordia.

### Significance
- **Environmental Monitoring**: Harmony B will play a crucial role in providing data for environmental monitoring and climate research.
- **Disaster Management**: The satellite's observations will support disaster management efforts by providing timely and accurate data.
- **Technological Advancement**: The development of Harmony B represents the ESA's commitment to advancing Earth science and technology.

## References

1. [Source](https://space.skyrocket.de/doc_sdat/harmony.htm)
2. [Source](https://www.esa.int/Applications/Observing_the_Earth/FutureEO/Contract_secures_build_for_ESA_s_Harmony_mission)