Table 1
Table of results for the pre-instability disk.
| Target Projectile |
I | II | III |
|
|
|||
| I | 1.85 × 10-20 | 3.75 × 10-21 | 1.00 × 10-24 |
| 0.78 | 0.74 | 0.95 | |
| 0.23 | 0.24 | 0.20 | |
|
|
|||
| II | 3.75 × 10-21 | 8.95 × 10-21 | 7.95 × 10-22 |
| 0.74 | 0.44 | 0.38 | |
| 0.24 | 0.33 | 0.37 | |
|
|
|||
| III | 1.00 × 10-24 | 7.95 × 10-22 | 7.32 × 10-21 |
| 0.95 | 0.38 | 0.24 | |
| 0.20 | 0.37 | 0.51 | |
Notes. The first row reports the disk zone where the target is located, the first column reports the disk zone where the projectile is located. The disk zones are (I) a< 20 AU; (II) 20 <a< 25 AU; and (III) a> 25 AU. Then, each box reports at the top the mean intrinsic collision probability 
(number of collisions per year per projectile on a target of R = 1 km), in the middle the mean collision velocity vcoll (in km s-1), and at the bottom the minimum size of a catastrophic projectile rp (in km).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.