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Jupiter Europa Orbiter

Artist concept of the Europa Jupiter System Mission: Jupiter Europa Orbiter (top) and Jupiter Ganymede Orbiter (bottom).
Mission type	Europa orbiter
Operator	NASA
Website	sci.esa.int
Mission duration	Cancelled
Spacecraft properties
Launch mass	1,371 kg (3,023 lb)
Start of mission
Launch date	Planned: 2020
Rocket	Delta IV Heavy or Atlas V
Orbital parameters
Reference system	Europa orbit
Inclination	95°–100°
Europa orbiter
Orbital insertion	2026 (proposed)
Europa Jupiter System Mission (EJSM-Laplace)← Jupiter Ganymede Orbiter

As a part of the defunct Europa Jupiter System Mission – Laplace (EJSM-Laplace), the Jupiter Europa Orbiter (JEO) was a proposed orbiter probe slated for lift-off in 2020 and planned for detailed studies of Jupiter's moons Europa and Io as well as the Jovian magnetosphere. Its main goal would have been to look for evidence of a possible subsurface ocean.

In June 2015, a more economical mission, the Europa Multiple-Flyby Mission, renamed into Europa Clipper, was approved by NASA and entered the formulation stage.

See also

• Europa Orbiter (former NASA plan cancelled in 2002).
• Europa Clipper (the next mission plan for Europa, non-nuclear orbiter for Jupiter doing Europa flybys).
• Europa Lander (NASA) (stand-alone mission for NASA Europa Lander) (Note: there was also a concept for a Europa Clipper add-on lander).

References

1. Stephen Battersby (5 November 2009). "A drop in the bucket is plenty". The National. Retrieved 8 November 2009.
2. "Jupiter Europa Orbiter (JEO) Concept". NASA / JPL. Archived from the original on 26 April 2011. This article incorporates text from this source, which is in the public domain.
3. Elizabeth Howell (20 June 2015). "NASA's Europa Mission Approved for Next Development Stage". Space.com. Retrieved 21 June 2015.

v t e Spacecraft missions to Jupiter
Flybys	Pioneer program Pioneer 10 11 Voyager program Voyager 1 2 Ulysses Cassini–Huygens New Horizons
Orbiters	Galileo Juno (active)
Atmospheric probes	Galileo Probe
En route	Jupiter Icy Moons Explorer (JUICE) (2023, insertion 2031) Europa Clipper (2024, insertion 2030)
Planned missions	Tianwen-4 (2029, insertion 2035)
Proposed missions	Shensuo (2020s) Europa Lander (2025) Interstellar Probe (2036)
Cancelled or not developed	Argo Europa Jupiter System Mission-Laplace Jupiter Europa Orbiter Jupiter Ganymede Orbiter Jupiter Magnetospheric Orbiter Europa Orbiter FIRE Innovative Interstellar Explorer Io Volcano Observer Jovian Europa Orbiter Jupiter Icy Moons Orbiter Laplace-P New Horizons 2 OKEANOS Pioneer H SMARA Trident Tsiolkovsky mission
Related topics	Exploration of Jupiter Atmosphere of Jupiter Magnetosphere of Jupiter Moons of Jupiter Io Exploration Europa Ganymede Callisto Rings of Jupiter Deep Space Network Missions to outer planets Colonization of the outer Solar System
Missions are ordered by launch date. Sign indicates failure en route or before intended mission data returned. indicates use of the planet as a gravity assist en route to another destination.

v t e Europa
Geology	Chaotic terrain Conamara Chaos Craters Pwyll Cilix Lists List of lineae on Europa List of geological features on Europa List of craters on Europa
Exploration	Past Pioneer 10 Pioneer 11 Voyager 1 Voyager 2 Galileo Cassini–Huygens New Horizons En route Jupiter Icy Moons Explorer (2023) Europa Clipper (2024) Cancelled Jupiter Europa Orbiter Europa Lander Europa Orbiter Jupiter Icy Moons Orbiter Jovian Europa Orbiter Laplace-P/Europa Lander
Other	Life Europa in fiction
Category

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