Jupiter Europa Orbiter

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Jupiter Europa Orbiter
Europa Jupiter System Mission artist concept.jpg
Montage with JEO
Operator NASA
Website ESA Webpage on Laplace/EJSM
Mission duration cruise period 5–6 years, science period 3 years (proposed)
Spacecraft properties
Launch mass 1,371 kg (3,023 lb)
Start of mission
Launch date 2020 (proposed)
Rocket Delta IV-H, Ares V or Atlas V
Orbital parameters
Reference system Europa orbit
Semi-major axis 100 km (62 mi)
Inclination 95°–100°
Europa orbiter
Orbital insertion 2025–2026 (proposed)

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.[1] Its main goal would have been to look for evidence of a possible subsurface ocean.[2]

In June 2015, a more economical mission, the Europa Multiple-Flyby Mission (Europa Clipper) was approved by NASA and entered the formulation stage.[3]


  1. ^ Battersby, Stephen (November 5, 2009). "A drop in the bucket is plenty". The National. Retrieved 2009-11-08. 
  2. ^ Jupiter Europa Orbiter (JEO) Concept
  3. ^ Howell, Elizabeth (20 June 2015). "NASA's Europa Mission Approved for Next Development Stage" Space.com. Retrieved 2015-06-21.

See also[edit]

  • 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)