The dust distribution suggests that the material ahead of and behind the major fragments in the orbit were likely large particles from the size of sand up to boulders. The particles in the tail are very small, not much larger than the wavelength of light. The brightnesses of the major fragments were observed to change by factors up to 1.7 between March and July 1993, although some became brighter while others became fainter. Impact was defined to occur at the 100mbar level of Jupiter's atmosphere. The fourth column lists the final best estimates, which were inferred directly from impact phenomena for 16 fragments, and computed from the orbit solutions for the rest.
All times are as viewed from the Earth, and therefore include the light travel time.
The impact latitude is jovicentric, while the longitude is System III, measured westwards on the planet. The meridian angle is the jovicentric longitude of the impact point measured from the midnight meridian towards the morning terminator. At the latitude of the impacts, the limb as viewed from the Earth was at meridian angle 76 deg, and the terminator was at meridian angle 87 deg. The final column gives the angular distance of the impacts behind the limb. Impact Location Merid.