\begin{table}%t1
\caption{Selected objects.}
\label{objetos}
%\centerline
{\begin{tabular}{lrlrrrrl}
\noalign{\smallskip}
\hline
\hline
\noalign{\smallskip}
Object & \multicolumn{1}{l}{$\alpha$(2000)}  & \multicolumn{1}{l}{$\delta$(2000)} & 
\multicolumn{1}{l}{\it l} & \multicolumn{1}{l}{\it b} &\multicolumn{1}{l}{$d$(pc)}  &
 \multicolumn{1}{l}{$\theta$(\arcsec)}  & \multicolumn{1}{l}{Other names} \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
NGC 1535     &  $04^{\rm{h}}14^{\rm{m}}15\fs6$ & $-12^{\rm{h}} 44^{\rm{m}} 22\fs5$   & $206\fdg48$  & $-$40\fdg56   & 1649  [2]  & 9.2 [2]& PK 206-40 1 \\
             &                                 &                                     &              &               & 2140  [1]  &	    &		  \\
             &                                 &                                     &              &               & 2283  [3]  &	    &		  \\
%  
NGC 2438     &  07 ~41 ~50.3                   & $-14 ~44 ~08.8$                     & 231.80	    & ~~~~4.12      & 1519  [2]  & 35.2 [2]& PK 231+04 2\\
             &                                 &                                     &              &               &   850 [1]  &          &             \\
             &                                 &                                     &              &               & 1203  [3]  &          &             \\
%           		        	   
NGC 2440     &  07 ~41 ~55.3                   & $-18 ~12 ~30.5$                     & 234.84	    & ~~~~2.42      & 1088  [2]  & 16.4 [2]& PK 234+02 1 \\
             &                                 &                                     &              &               & 1010  [1]  &          &             \\
             &                                 &                                     &              &               & 1348  [3]  &          &             \\
%	    		        	 
NGC 3132     &  10 ~07 ~01.7                   & $-40 ~26 ~11.7$                     & 272.11	    & ~~~12.40      & 1079 [2]   & 28.0 [2]& PK 272+12 1 \\
             &                                 &                                     &              &               & 1110  [1]  &          &             \\
             &                                 &                                     &              &               & 1251  [3]  &          &             \\
%
NGC 3242     &  10 ~24 ~46.0                   & $-18 ~38 ~32.3$                     &261.05	    & ~~~32.05      &  810 [2]   & 20.2 [2] & PK 261+321, Ghost of Jupiter Nebula \\     
             &                                 &                                     &              &               &  860 [1]   &           &             \\
             &                                 &                                     &              &               & 1083 [3]   &           &             \\
% 
NGC 6302     &  17 ~13 ~44.6                   & $-37 ~06 ~11.7$                     &349.51	    & ~~~~1.06      &  415 [2]   & 22.3 [2] & PK 349+01 1, Bug Nebula, Gum 60 \\
             &                                 &                                     &              &               &  950 [1]   &           &             \\
             &                                 &                                     &              &               &  525 [3]   &           &             \\
%
NGC 6563     &  18 ~12 ~02.5                   & $-33 ~52 ~06.0$                     & 358.50	    & ~$-$7.34      & 1867 [2]   & 22.6 [2]& PK 358-07 1  \\
             &                                 &                                     &              &               & 1270  [1]  &           &             \\
             &                                 &                                     &              &               & 1631  [3]  &           &             \\
 % 
NGC 6781     &  19 ~18 ~28.2                   & $~~06 ~32 ~23.0$                    & ~41.84       & ~$-$2.99      &  904 [2]   &  35.0 [2] & PK 041-02 1   \\
             &                                 &                                     &              &               &  910  [1]  &           &             \\
             &                                 &                                     &              &               &  699  [3]  &           &             \\
% 
NGC 6853     &  19 ~59 ~36.2                   & $~~22 ~43 ~15.6$                    &~60.84       & ~$-$3.70      &  400 [2]   & 100.0 [2] & M 27, PK 060-03 1, Dumbbell Nebula\\
             &                                 &                                     &              &               &  250  [1]  &           &             \\
             &                                 &                                     &              &               &  262  [1]  &           &             \\
%
NGC 7009     &  21 ~04 ~10.8                   & $-11 ~21 ~48.0$                     &~37.76	    &  $-$34.57     &  871  [2]  & 13.4 [2]  & PK 037-34 1, Saturn Nebula  \\  
             &                                 &                                     &              &               & 1280  [1]  &           &             \\
             &                                 &                                     &              &               & 1201  [3]  &           &             \\
\hline
\end{tabular}} \medskip
%%\begin{minipage}[c]{18.0cm}
{References:} [1] \citet{cahn71}; [2] \citet{maciel80}; [3] \citet{cahn92}. \\
{Conventions:} $\alpha$, $\delta$: equatorial coordinates;
{\it l}, {\it b}: galactic coordinates, in degree; {\it d}: distance; $\theta$: angular radius. \\
{Catalogues:} ${\rm Gum}= $~~\citet{gum55}; ${\rm PK}= $~~\citet{perek67}.
%\end{minipage}
\end{table}