1. WG – Chemistry – mineralogy elemental

2. Organization
Define the observation strategy of the different Instruments of remote sensing and “in situ”
Define different stages for the observations
Far out (examples..)
Study rotation phase curve ( camera and Virtis)
Gas coma and dust coma CO / CO2/ CN / H2O ratio ( Alice, VIRTIS, Rosina)
Temperature measurements (VIRTIS, MIRO)
Overall composition  molecules and minerals
Density and shape ( Radii Science)

3. … just examples
2nd stage
Measure of gas
Measure of the dust

4. What is needed to do the work
Define the science goals for remote sensing instruments and in situ ( Alice, Cosima, Miro, Osiris, Rosina, Virtis)
Each instrument shall define its observation strategy
This work should be used in order to define an harmonized sequence of integrated observation
Schedule twice x year + a meeting in ISSI.
Each PI should nominate 2 people to have at least one of them participating to each meeting

5. What is needed to do the work (2)
Support of ESOC  Orbital analysis
Support of the project scientist for coordination
Utilize and complete critically the table of “Scientific Themes”

6. Goals By the end of year November the science goals shall be provided
Prediction  reliable science model  e.g.active area
Interaction with the development of engineering model