SCIENCE OPPORTUNITY ANALYSIS ('TOUR ATLAS')

REFERENCE TRAJECTORY: 141a (Crema 3.0)

This page provides information on the occurence and distribution of events driving the opportunity

of performing certain observations - ('when can be done what and under which geometrical conditions')

THE CONTENT OF THIS PAGE IS 'WORK IN PROGRESS' - PLEASE CONTACT THE SOC FOR ANY QUESTIONS - nicolas.altobelli@sciops.esa.int and cvallat@sciops.esa.int

The page contains:

Major events ordered chronologically 

Flybys

Perijoves and Apojoves

Earth occultations

Stellar (and sun) occultations

Current sheet crossings

Dust Ram time series

Phase angle events

Moon transits in front of Jupiter

More events coming soon...

MISSION GENERIC EVENTS

The table accesible through this link contains a list of events occurence that can be useful for high level science planning

FLYBYS LIST AND GEOMETRY

All_Flybys_Science_Phase

PERIJOVES AND APOJOVES

All_perijoves_apojoves_June_2029_Dec_2032

The following file provides a more detailed  anlaysis of the Perijoves in 2029-2032, in particular with respect to overlapp with other moon's flybys. On the request of WG4, a time window of +-2 days around the perijove was considered and any moon close flyby occuring during this time window is flagged and its geometry computed (this included a flag whether or not this flyby occurs when the moon's is in Jupiter's shadow). Malargue passes occuring during the perijove are also indicated.

Analysis_periojove_time_windows_01062029_01062032

EARTH OCCULTATIONS OPPORTUNITIES

  • Earth occultations by Jupiter, seen from Juice
  1. Body-fixed Latitude-Longitude-illumination coverage
  2. Distribution of occultations with time
  3. File (csv format) containing all events and associated geometry
  •  Earth occultations by Ganymede, seen from Juice

 1.  Body-fixed Latitude-Longitude-illumination coverage

 2.  Distribution of occultations with time

 3.  File (csv format) containing all events and associated geometry 

  •  Earth occultations by Callisto, seen from Juice

 1.  Body-fixed Latitude-Longitude-illumination coverage

 2.  Distribution of occultations with time

 3.  File (csv format) containing all events and associated geometry 

 

  •  Earth occultations by Europa, seen from Juice

 1.  Body-fixed Latitude-Longitude-illumination coverage

 2.  Distribution of occultations with time

 3.  File (csv format) containing all events and associated geometry 

 

 

STELLAR (AND SOLAR) OCCULTATIONS:

Note: the stellar occultation events are computed using the stellar catalogue provided by the UVS team.

The solar occultations are computed - a separate file is provided for sun occultations if any are found for the considered body.

  • Stellar occultations by Jupiter, seen from Juice 
  1.  Body-fixed Latitude-Longitude-Illumination coverage
  2.  Distribution of occultations with time
  3. All stellar occultations nominal science phase
  4. All sun occultations nominal science phase 
  • Stellar occultations by Ganymede, seen from Juice  
  1. Body-fixed Latitude-Longitude-Illumination coverage
  2. Distribution of occultations with time
  3. All stellar occultations nominal science phase [Except last 3 months of mission]
  4. All sun occultations nominal science phase [Except last 3 months of mission]
  •  Stellar occultations by Europa, seen from Juice
  1. Body-fixed Latitude-Longitude-Illumination coverage
  2. Distribution of occultations with time
  3. All stellar occultations nominal science phase 
  4. All sun occultations nominal science phase
  • Stellar occultations by Callisto, seen from Juice
  1. Body-fixed Latitude-Longitude-Illumination coverage
  2. Distribution of occultations with time
  3. All stellar occultations nominal science phase
  4. All sun occultations nominal science phase

 

Current sheet crossing events (2030)

Khurana's 2009 model of the Jovian magnetic field is used to compute the events associated to the radial component of the B field changing sign.

List of current sheet crossings

Dust Ram and impact velocities (2030)

Note:the grain assumed in these calculations are on prograde keplerian orbits

Dust ram and impact velocities time series

Dust ram and impact velocities plot

Phase angle events 

The following files provide a list of events corresponding to the crossing of different values of the solar phase angle with respect to the different moons. The sampling in phase values is in general 10 degrees, except below 10 degrees and above 170 degrees, because those regions can show dramatic variations in photometrie. A higher sampling in phase angle value was therefore used (5 degrees and 1 degree close to opposition). These files can used to pick up observation opportunties such as to build a phase curve by combining observations acquired over a mission phase.

Callisto phase events

Europa phase events

Ganymede phase events

Jupiter phase events

Moon transit events

Those events correspond to the alignement of Jupiter, a moon and the spacecraft - in the first tables, only those events are selected which correspond to a ratio between the Jupiter disk and the moon's disk angular size, as seen from the spacecraft, of less than 20 (25 in the case of Io). In the second set of tables, all transit events are kept.

Europa transit events

Callisto transit events

Ganymede transit events

Io transit events

All Europa transit events

All Callisto transit events

All Ganymede transit events

All Io transit events