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Click below to navigate to useful links, graphics, animations and code. Links provided are for general research needs such as ephemerides, data systems or publication websites.

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Juno Magnetospheric Working Group

PDF of Juno Science Orbits (Activity Periods)

Orbit Plots

View "ReadMe" file here or download PDF.

We have taken the Juno trajectory, a magnetic field model (from Krishan Khurana, UCLA) and average location of the main aurora (from Denis Grodent, U. Liege) to show the magnetic environment that Juno will be flying through as well as the locations of the footprints and farthest points along the magnetic field line as Juno moves through Jupiter's magnetic field. We have captured this information on three pages of plots per orbit.

An alpha-test survey page that combines all the following orbit plots can be found here.

Preview Description Download/View

Bertrand Bonfond: Northern and Southern main oval images are mean polar maps based on HST/ACS Far-UV images. Satellite footprints are marked with Acronyms. Highlighted features are described in the readme file.

The tilt referes to an orientation option which optimizes another instrument.

 

 

README zip file
README
Plots/Animations

Sphere Orbit: Mapping along magnetic field lines to north & south poles

view readme file htm or
PDF

SphereOrbit.zip file (9MB)
or
view it here...
Single orbit plots: orbits 2 -> 32. Shown is the z component of the magnetic coordinates vs rho, the cylindrical radius. Each hour for the first +/- 10 hrs of perijove is marked, as well as, every +/- 10 hrs after. Viewhere...
32 orbit animation: each frame represents a single orbit of the Juno space craft, starting with orbit 2 and ending with orbit 32. Plotted is the z component of the magnetic coordinates vs rho, the cylindrical radius. The color precesses with orbit number. Download MP4 file here...



Stan Cowley provides a set of plots based on an axisymmetric magnetic field and current sheet (Cowley et al., Ann. Geophys., 26, 4051-4074, 2008).

Page 1: Trajectory plot - Shows model field lines in a magnetic meridian plane with the spacecraft trajectory (red) superposed. The upper portion of the trajectory is inbound in each plot, the lower portion is outbound. Blue circles on the trajectory show the start of each (Earth) day, with the start of ‘periapsis day’ being numbered with the DOY. Red circles show 2 h intervals between, with larger circles being shown every 6 h. The black circle close to the planet shows the position of periapsis, while the two black circles either side show periapsis plus and minus 4 h.

 

Page 2 & 3: Perijove parameter plot -

Pages 2 and 3 show selected field and plasma parameters versus time for each perijove pass. Each
plot is centred on the time of periapsis (t = 0h) and shows the interval ±4 h about this time (as shown by the black dots in the trajectory plot on page 1). From top to bottom of page 2 and from left to right we show various parameters described in the readme file.

Page 3 shows blown-up versions of the plots of the azimuthal sweep-back field and local field- aligned current density, as in (e) and (f) from the readme file, so that the details may more readily be seen.

 

Page 4: Whole-orbit parameter plots: Shows model field parameters versus time over essentially the whole of each orbit, specifically for 120 hours (5 days) on either side of periapsis - explainations of the parameters can be found in the readme file...

README FILE - PDF or HTM

View Files

Mag Orbit: Magnetic Field Along the orbits of Juno


view readme file htm or
PDF

MagOrbit.zip file (12MB)
or
view it here...

Juno MWG Orbit Plots: Juno trajectory, the magnetic environment that Juno will be flying through, locations of the footprints and farthest points along the magnetic field line

view readme file htm or
PDF

AppOrbit.zip file (15MB)
or
view it here...

Farthest radial point: plots of the farthest point along the magnetic field(Khurana model) that instantaneously passes through the Juno spacecraft along its trajectory

view readme file htm or
PDF

FarthestRadialPt.zip file (6.6MB)
or
view it here...

Field Lines: Mapping from Juno along magnetic field line.

view readme file htm or
PDF

FieldLines.zip file (10MB)
or
view it here...
Aurora Crossing Plots: each plot shows the magnetic footprints of Juno when it is within 10 RJ of Jupiter. The footprints are traced using four different magnetic field models (VIT4, VIP4, VIPAL, and Khurana). Kinks in the Khurana model show when Juno encounters the current sheet. View here...
Aurora Crossing Times: each text file contains the predicted times for Juno to enter and exit the Auroral Acceleration regions using four different magnetic field models. Each file also contains the location of Juno when entering these regions. View here...
Comparison of VIT4, VIP4, and VIPAL: three files comparing VIT4, VIP4, and VIPAL. Two of the files contain the same information, just in different formats. The third file contains surface field contour plots of the three models. View here...
Io Flux Comparison: a PDF presentation looking at the magnetic flux through Io's northern and southern auroral ovals. The ratios of the northern and southern fluxes are compared for the VIT4, VIP4, and VIPAL magnetic field models. View here...

 

Contact Fran Bagenal (bagenal at lasp.colorado.edu) with queries.