1. OSIRIS Science planning
Structure of science planning document & science goals.

2. Top level science themes
A. Internal Properties
B. Geomorphology and physical properties of the nucleus surface
C. Surface composition
D. Surface activity
G. Monitoring of the activity
H. Physical processes in the inner coma
I. Nucleus composition from coma observations
J. Detailed physical and chemical properties of the landing site
K. Ground truth of ground-based observations: Nucleus
L. Ground truth of ground-based observations: Coma

3. 2nd level
A. Internal Properties B. Geomorphology and physical properties of the nucleus surface C. Surface composition D. Surface activity
A.1. Internal structure B.1. Large-scale morphology B.2. Small scale morphology C.1. Refractory material C.2. Ices D.1. Spatial distribution of active areas D.2. Physical properties of active areas D.3. Transient events D.4. Effect of the activity on the surface properties

4. 2nd level G. Monitoring of the activity
H. Physical processes in the inner coma
I. Nucleus composition from coma observations
G.1. Dust G.2. Gas G.3. Transient events H.1. Dynamics H.2. Grain evolution I.1. Dust grains physical properties I.1.2. Dust albedo I.2. Ices

5. 2nd level
J. Detailed physical and chemical properties of the landing site K. Ground truth of ground-based observations: Nucleus L. Ground truth of ground-based observations: Coma
J.1. Geology and Physical properties J.2. Composition and Activity K.1. Physical properties K.2. Dynamics L.1. Dust coma L.2. Gas coma

6. A. Internal Properties A.1. Internal structure A.1.1. Bulk density
A.1.2. Surface Density
A.1.3. Building blocks

7. B. Geomorphology and physical properties of the nucleus surface
B.1. Large-scale morphology
B.1.1. Main geological units
B.1.2. Topographic features
B.2. Small scale morphology
B.2.1. Geological units/sub-units
B.2.2. Detailed topographic features
B.2.3. Surface layers

8. C. Surface composition C.1. Refractory material
C.1.1. Physical properties of the surface material
C.2. Ices
C.2.1. Spatial distribution of icy areas [vs. refractory mantle]
C.2.2. Composition of icy patches
C.2.3. Physical properties of icy patches

9. D. Surface activity D.3. Transient events D.3.1. Outbursts
D.1. Spatial distribution of active areas
D.1.1. Location of active areas
D.1.2. Night-side activity
D.2. Physical properties of active areas
D.2.1. Geomorphology
D.2.2. Surface energy balance
D.2.3. Thermal properties
D.2.4. NGF “coupling factor”
D.3. Transient events
D.3.1. Outbursts
D.3.2. Splitting
D.3.3. Rapid activity variations
D.4. Effect of the activity on the surface properties
D.4.1. Erosion
D.4.2. Local surface deposits
D.4.3. Large-scale deposits

10. G. Monitoring of the activity
G.1. Dust
G.1.1. Dust activity onset at large heliocentric distances
G.1.2. Seasonal variations of the dust production rate
G.1.3. Diurnal variations of the dust production rate
G.1.4. Contribution of icy grains to the activity
G.2. Gas
G.2.1. Gas activity onset at large heliocentric distances
G.2.2. Seasonal variations of the gas production rate
G.2.3. Diurnal variations of the gas production rate
G.3. Transient events

11. H. Physical processes in the inner coma
H.1. Dynamics
H.1.1. Dust-to-gas coupling
H.1.3. Jets and filaments
H.1.4. Dust and gas density
H.2. Grain evolution
H.2.1. Sublimation of icy-grains
H.2.2. Evolution of large icy, fluffy chunks [snowballs]
H.2.3. Fragmentation of grains
H.2.4. Photo-dissociation of water molecules

12. I. Nucleus composition from coma observations
I.1. Dust grains physical properties
I.1.1. Size and mass distributions
I.1.2. Dust albedo
I.1.3. Chemical composition
I.2. Ices
I.2.1. Abundances of parent species relative to water
I.3. Dust-gas relationship
I.3.1. Dust-to-gas ratio

13. J. Detailed physical and chemical properties of the landing site
J.1. Geology and Physical properties
J.1.1. Geomorphology and geology of the landing site [see B.2.2]
J.1.2. Physical properties [see B.1.1]
J.2. Composition and Activity
J.2.1. Activity [see D.1.1]
J.2.2. Composition [see B.3.1]

14. K. & L. Ground truth of ground-based observations
K. Nucleus
K.1. Physical properties
K.1.1. Size and shape
K.1.2. Surface composition
K.2. Dynamics
K.2.1. Astrometry
K.2.2. Rotation
L. Coma
L.1. Dust coma
L.1.1. Dust jets
L.1.2. Dust production rate
L.2. Gas coma
L.2.1. Gas production rate

15. Discipline groups 1. Nucleus 2. Chemical composition
3. Grain properties
4. Activity
A. Internal Properties
B. Geomorphology and physical properties of the nucleus surface
C. Surface composition
D. Surface activity
G. Monitoring of the activity
H. Physical processes in the inner coma
I. Nucleus composition from coma observations
J. Detailed physical and chemical properties of the landing site
K. Ground truth of ground-based observations: Nucleus
L. Ground truth of ground-based observations: Coma
I.1.3 (Chemical composition) and I.2.1 (abundances of parent species)

16. Each 2nd level science goal contains N measurement objectives.
Measurement objectives are common to many science goals.
Measurement objectives mapped to DGs and timeline.

20. Next steps Review science goals list (now)
Take responsibility for science areas of interest (now)
Fill in details for measurement objectives (by 30 Nov)
Identify common measurements, update timeline and DG spreadsheets based on these details (7 Dec)
Describe measurement objectives by ‘atomic blocks’
Build detailed timelines (sequences) from atomic blocks, get overall view of required data volume etc. (before Christmas break)
Iterate on priorities etc as necessary (January telecons and Feb sci planning group meeting).