# Jupiter Ganymede Orbiter

> cancelled European space probe to the Jupiter system

**Wikidata**: [Q3190123](https://www.wikidata.org/wiki/Q3190123)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Jupiter_Ganymede_Orbiter)  
**Source**: https://4ort.xyz/entity/jupiter-ganymede-orbiter

## Summary
The Jupiter Ganymede Orbiter (JGO) was a cancelled European space probe designed to investigate the Jupiter system, with a specific focus on orbiting the moon Ganymede. It was intended to serve as the European contribution to the collaborative Europa Jupiter System Mission – Laplace. Although the project was abandoned, its objectives and planning were subsequently succeeded by the Jupiter Icy Moons Explorer (JUICE).

## Key Facts
*   **Entity Type:** Planetary probe and orbiter (specifically targeting Ganymede).
*   **Status:** Cancelled project (abandoned).
*   **Parent Mission:** Part of the "Europa Jupiter System Mission – Laplace" (EJSM/Laplace).
*   **Successor:** Replaced by the Jupiter Icy Moons Explorer (JUICE).
*   **Aliases:** Also known as JGO and EJSM/Laplace.
*   **Target Destination:** Jupiter system, specifically the celestial body Ganymede.
*   **Origin:** Described as a European space probe.

## FAQs
### Q: Was the Jupiter Ganymede Orbiter ever launched?
A: No, the Jupiter Ganymede Orbiter was a cancelled project. It was an abandoned proposal that never reached the launch or operational phase.

### Q: What mission replaced the Jupiter Ganymede Orbiter?
A: The Jupiter Ganymede Orbiter was replaced by the Jupiter Icy Moons Explorer (JUICE). This new mission took over the objectives following the cancellation of the original proposal.

### Q: What was the primary target of the Jupiter Ganymede Orbiter?
A: The spacecraft was designed as an orbiter tasked with investigating the Jupiter system, with a specific orbital focus on the moon Ganymede.

## Why It Matters
The Jupiter Ganymede Orbiter represents a significant chapter in the strategic planning of outer solar system exploration. As the proposed European component of the international "Europa Jupiter System Mission – Laplace," JGO highlighted a collaborative ambition to study the Jovian system in depth. Its existence and subsequent cancellation illustrate the iterative nature of major space missions, where proposals are often refined or consolidated.

The project is particularly notable for its direct lineage to the Jupiter Icy Moons Explorer (JUICE). The planning and scientific goals established for JGO provided the foundation for JUICE, ensuring that the objective of exploring Jupiter's icy moons, particularly Ganymede, remained a priority for the European space community. Consequently, JGO serves as the conceptual predecessor to active missions, bridging the gap between initial proposals and realized exploration.

## Notable For
*   **Specific Orbital Target:** Unlike general Jupiter probes, this entity was explicitly classed as an orbiter for Ganymede.
*   **International Collaboration:** It was a key component of the proposed Europa Jupiter System Mission – Laplace.
*   **Project Status:** It is distinct for being an "abandoned project" rather than an active or completed mission.
*   **Legacy:** It is the direct predecessor to the Jupiter Icy Moons Explorer (JUICE).

## Body

### Mission Classification and Design
The Jupiter Ganymede Orbiter (JGO) was classified as a **planetary probe** and an **orbiter**. Its design specifications centered on becoming a spacecraft capable of orbiting a celestial body, specifically **Ganymede**, within the Jupiter system. The project is defined in historical records as a **cancelled European space probe**.

### Role in the Laplace Mission
JGO was integral to the **Europa Jupiter System Mission – Laplace**. It was designated as the European contribution to this broader collaborative effort. The mission concept, often referred to by the alias **EJSM/Laplace**, aimed to utilize multiple spacecraft to study the Jupiter system comprehensively.

### Cancellation and Succession
The project is currently listed as an **abandoned project**. Following its cancellation, the mission concept was not discarded but rather evolved into a new entity. The Jupiter Ganymede Orbiter was **replaced by** the **Jupiter Icy Moons Explorer**. This succession ensured that the scientific goals intended for JGO were preserved under a new mission architecture.

## References

1. Freebase Data Dumps. 2013