\begin{table}%T1
%%\centering
\par
\caption{Absolute magnitudes $H_{v}$ and magnitude variations $\Delta m_{v}$ of the lightcurve of Chiron.}
\label{Hv_Dmv}
$$
\begin{array}{p{0.55\linewidth}ccc}
\hline\hline
\noalign{\smallskip}
Date    &H_{v} &\Delta m_{v}  &{\rm Ref.}\\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
1985 Jan. 19     &6.80   &{>}0.05          &(1)\\
1986 Dec.        &6.62   &0.088\pm0.003  &(2)\\
1988 Feb. 29     &6.31   &0.08\pm0.01    &(3)\\
1988 Oct. 31     &5.70   &0.04\pm0.01    &(4)\\
1989 Apr. 11     &5.76   &0.04\pm0.01    &(5)\\
1990 Jan. 29-30  &6.10   &0.045\pm0.005  &(3)\\
1990 Feb. 21-24  &5.93   &0.05\pm0.01    &(6)\\
1991 Jan. 08     &5.93   &0.04\pm0.01    &(1)\\
1993 Feb. 20     &6.81   &{\sim}0.02       &(7)\\
1996 Jan.-Jun.    &6.62   &0.06\pm0.01    &(8)\\
\noalign{\smallskip}
\hline
\end{array}  
$$
{References}:  (1)~Marcialis \& Buratti (\cite{Marcialis1993}); (2)~Bus et al. (\cite{Bus1989}); (3)~Luu \&  Jewitt (\cite{Luu1990}); (4)~Bus \& Bowell (\cite{Bus1988}); (5)~Meech \& Belton (\cite{Meech1990}); (6)~West (\cite{West1991}); (7)~Meech et al. (\cite{Meech1997}); (8)~Lazzaro et al. (\cite{Lazzaro1997}). 
\end{table}