\begin{table}%t3
\caption {Coma structure geometry caused by normal activity of comet
  9P/Tempel 1 around the time of the DI event. Near-nucleus position angles
  PA, curvature and minimum extension are determined from BVRI images of the
  comet obtained between~4 and 8~July 2005. The results are cross-checked with
  data obtained through narrowband filters during the same time interval. The
  jet-like structures are labeled in Fig. \ref{laplace_Fors}. Accuracy of the
  PA values is $\pm$5~deg. Active regions, tentatively associated with the
  jets, are labeled AR1, AR2, AR3a, AR3b, AR3c, and AR4. 
  Abbreviations and notes: C~=~clockwise curvature, CC~=~counterclockwise curvature, 
  S~=~straight, no curvature. (*) Structure~B may also be due to comet tail phenomena. 
  (**) Structure~C is detached from the nucleus, but overlaps with jet~D at an projected
  nucleus distance of about 3500~km. It extends almost parallel to structure~B
  into tail direction.
  (***) Structures~G, H, I evolved from the nucleus at about the same PA, but show
  different curvatures which indicates that they may originate from 3~different
  active regions at the nucleus with slightly different latitudes:
  G located slightly South of H and the latter being slightly South of
  I. The PA difference between GHI and the projected rotation axis suggests that
  the related active regions may be located close to the equator of the nucleus.
\label{fan_geometry}}
%\centering
\par
\begin{tabular}{ccccc}
\hline\hline
Structure  & Nuc. PA      & Curvature & Min. extension & Active \\
           & (deg)           &           & (km)           & Region \\
\hline
A          &  0              & CC        &  27~000           & AR4\\
B(*)       &  110            & S         &  47~000           & AR3b\\
C(**)      &  --             & S         &  47~000           & AR2\\
D          &  155            & C         &  58~000           & AR1\\
E          &  195            & C         &  43~000           & AR1\\
F          &  225            & C         &  23~000           & AR2\\
G(***)     &  285            & C         &  18~000           & AR3c\\
H(***)     &  285            & S         &  17~000           & AR3b\\
I(***)     &  285            & CC        &  25~000           & AR3a\\
\hline
\end{tabular}
\end{table}