Jupiter Polar Orbiter

1
Jupiter Polar Orbiter

• Science Objectives
• The Relative Contributions of Planetary Rotation
  and of the Interaction with the Interplanetary
  Medium to Jovian Magnetospheric Dynamics
• How Global Electric and Magnetic Fields Regulate
  the Processes that Produce the Radiation Belts,
  Plasma Sheet, and the Aurora
• How momentum is transferred between Jupiters
  ionosphere and magnetosphere
• Identify the Particles Responsible for the
  Generation of the Jovian Aurora and Determine
  their Magnetospheric Source Regions

• Mission Description
• Example Mission Design
• Delta III/Star 48 Launch , 1658 kg _at_ C3 31
  km2/s2 (28.1 min)
• Elliptical Polar Orbit
• 1.1 Rj x 40 Rj, 75 inclination
• 4.6 Year cruise, 1-Year OPS
• Flight System Concept
• Rad-Hard Spin-Stabilized Platform
• Solar Array Implementation
• Payload Field Particles, Imagery, Radio
  Science
• 55 kg, 38 W, 4 kbps
• 1758 m/s ?V
• Capability Driven Design
• 900 arcsec (control), 36 arcsec (knowledge)

• Measurement Strategy
• Measure Particles and Fields In-Situ in the
  Auroral Acceleration Region
• Radio occultations of ionosphere and upper
  atmosphere
• Image Aurora in the Visible and UV
• Measure the Magnitude and Configuration of the
  Near-Planet Magnetic Field and Map the 3-D
  Structure of the Radiation Belts

• Enhancing Technology Development
• Radiation Hard Components
• Ka-band Transponder/TWTA/Switches