\begin{table}%C.2
%\centering
\par
\caption{Ground-based optical (${\it UBVRI}$) data, acquired over a
long period, found in the literature. If possible the maximum and
minimum magnitudes of a dataset are taken into
account.\label{DATA:optical}}
\begin{tabular}{llllllllll}
\hline
\hline
No	&Name			&JD		&$U$	&$B$	&$V$	&$R$	&$I$	&System		&Reference\\
	&			&2400000	&	&	&	&	&	&		&\\
\hline
1	&TW~Cam		&		&12.12	&10.94	&9.51	&	&	&Johnson	&\citet{79Dawson}\\
\par
2	&RV~Tau		&		&12.52	&10.93	&9.19	&	&	&Johnson	&\citet{79Dawson}\\
\par
3	&IRAS~05208		&52294.367	&11.132	&10.498	&9.352	&8.643	&7.947	&Cousins	&SAAO\\
	&			&52253.552	&11.185	&10.665	&9.608	&8.915	&8.139	&Cousins	&SAAO\\
\par
4	&DY~Ori		&		&13.45	&12.75	&11.48	&	&	&Johnson	&\citet{79Dawson}\\
\par
5	&CT~Ori		&		&11.69	&11.24	&10.31	&	&	&Johnson	&\citet{79Dawson}\\
\par
6	&SU~Gem		&		&12.88	&11.70	&10.19	&	&	&Johnson	&\citet{79Dawson}\\
\par
7	&UY~CMa		&		&11.36	&11.03	&10.40	&	&	&Johnson	&\citet{79Dawson}\\
	&			&		&12.28	&11.81	&11.00	&	&	&Johnson	&\citet{79Dawson}\\
\par
10	&ST~Pup		&48363.260	&9.890	&9.686	&9.362	&9.126	&8.835	&Cousins	&\citet{93Kilkenny}\\
	&			&48672.365	&12.058	&11.568	&10.661	&10.151	&9.642	&Cousins	&\citet{93Kilkenny}\\
\par
13	&U~Mon			&		&7.15	&6.59	&5.66	&	&	&Johnson	&\citet{79Dawson}\\
	&			&49258.126	&	&6.497	&5.436	&4.946	&4.511	&Cousins	&\citet{96Pollard}\\
	&			&48499.199	&	&8.614	&7.632	&7.088	&6.387	&Cousins	&\citet{96Pollard}\\
\par
14	&AR~Pup		&48622.972	&	&9.782	&9.093	&8.672	&8.216	&Cousins	&\citet{96Pollard}\\
	&			&48854.238	&	&10.823	&10.092	&9.638	&9.186	&Cousins	&\citet{96Pollard}\\
\par
15	&IRAS~08544		&51609.372	&11.660	&10.533	&9.017	&8.052	&7.024	&Cousins	&SAAO\\
	&			&51300.233	&11.982	&10.756	&9.192	&8.186	&7.139	&Cousins	&SAAO\\
\par
16	&IRAS~09060		&50957.232	&12.390	&11.817	&10.959	&10.383	&9.749	&Cousins	&SAAO\\
	&			&49399.455	&12.893	&12.305	&11.417	&10.839	&10.227	&Cousins	&SAAO\\
\par
17	&IRAS~09144		&51625.329	&	&	&13.857	&12.267	&10.777	&Cousins	&SAAO\\
	&			&51626.333	&	&15.886	&13.890	&12.293	&10.797	&Cousins	&SAAO\\
\par
18	&IW~Car		&48650.035	&	&8.657	&7.852	&7.379	&6.772	&Cousins	&\citet{96Pollard}\\
	&			&48911.056	&	&9.755	&8.758	&8.148	&7.454	&Cousins	&\citet{96Pollard}\\
\par
20	&IRAS~09538		&52030.329	&12.772	&12.083	&11.161	&10.623	&10.056	&Cousins	&SAAO\\
	&			&51576.506	&14.638	&13.733	&12.485	&11.691	&10.901	&Cousins	&SAAO\\
\par
23	&IRAS~10456		&49053.470	&9.829	&7.942	&6.246	&	&	&Cousins	&SAAO\\
	&			&49078.387	&9.869	&7.963	&6.267	&	&	&Cousins	&SAAO\\
\par
27	&RU~Cen		&46244.28	&11.31	&10.46	&9.43	&8.89	&8.38	&Cousins	&\citet{87Goldsmith}\\
	&			&46245.34	&11.44	&10.59	&9.53	&8.98	&8.47	&Cousins	&\citet{87Goldsmith}\\
	&			&48269.101	&	&9.158	&8.529	&8.178	&7.606	&Cousins	&\citet{96Pollard}\\
	&			&48319.041	&	&10.798	&9.811	&9.294	&8.688	&Cousins	&\citet{96Pollard}\\
\par
28	&SX~Cen		&46243.26	&10.85	&10.26	&9.43	&8.97	&8.53	&Cousins	&\citet{87Goldsmith}\\
	&			&46248.30	&11.36	&10.70	&9.77	&9.27	&8.81	&Cousins	&\citet{87Goldsmith}\\
\par
29	&HD~108015		&52734.477	&8.524	&8.225	&7.834	&7.598	&7.343	&Cousins	&SAAO\\
	&			&53139.350	&8.873	&8.506	&8.048	&7.771	&7.498	&Cousins	&SAAO\\
\par
32	&IRAS~15469		&49489.459	&12.985	&11.921	&10.493	&9.609	&8.676	&Cousins	&SAAO\\
	&			&49442.626	&13.063	&12.090	&10.622	&9.718	&8.769	&Cousins	&SAAO\\
\par
34	&IRAS~16230		&49585.254	&12.800	&12.102	&11.157	&10.585	&9.985	&Cousins	&SAAO\\
	&			&53129.518	&13.324	&12.760	&11.628	&10.915	&10.272	&Cousins	&SAAO\\
\par
35	&IRAS~17038		&52411.554	&12.229	&11.241	&9.922	&9.158	&8.420	&Cousins	&SAAO\\
	&			&51786.255	&14.756	&13.453	&11.916	&10.982	&9.895	&Cousins	&SAAO\\
\par
36	&IRAS~17233		&51663.588	&12.719	&12.312	&11.705	&11.287	&10.830	&Cousins	&SAAO\\
	&			&49590.265	&14.219	&13.564	&12.663	&12.172	&11.722	&Cousins	&SAAO\\
\par
37	&IRAS~17243		&52837.410	&12.378	&11.316	&10.200	&9.544	&8.919	&Cousins	&SAAO\\
	&			&52507.388	&13.479	&12.216	&10.915	&10.186	&9.507	&Cousins	&SAAO\\
\par
39	&AI~Sco		&46245.48	&13.21	&11.16	&9.55	&8.73	&7.92	&Cousins	&\citet{87Goldsmith}\\
	&			&49238.995	&	&10.088	&8.868	&8.215	&7.656	&Cousins	&\citet{96Pollard}\\
	&			&4823.095	&	&12.884	&11.422	&10.623	&9.954	&Cousins	&\citet{96Pollard}\\
\par
40	&IRAS~18123		&49537.405	&13.033	&11.335	&9.876	&9.146	&8.524	&Cousins	&SAAO\\
	&			&49970.295	&13.907	&12.062	&10.537	&9.781	&9.030	&Cousins	&SAAO\\
\hline
41	&IRAS~18158		&48799.539	&14.720	&13.970	&13.070	&12.380	&11.670	&Cousins	&SAAO\\
	&			&49172.542	&14.857	&14.349	&13.699	&12.742	&12.312	&Cousins	&SAAO\\
\par
42	&AC~Her		&		&8.00	&7.66	&7.03	&	&	&Johnson	&\citet{79Dawson}\\
	&			&46248.47	&9.11	&8.68	&7.87	&7.40	&6.91	&Cousins	&\citet{87Goldsmith}\\
\par
43	&AD~Aql		&46253.53	&14.30	&12.61	&11.07	&10.26	&	&Cousins	&\citet{87Goldsmith}\\
	&			&48524.899	&	&11.811	&11.285	&10.917	&10.534	&Cousins	&\citet{96Pollard}\\
	&			&48152.985	&	&13.039	&12.097	&11.558	&11.069	&Cousins	&\citet{96Pollard}\\
\par
44	&IRAS~19125		&49563.415	&11.724	&11.097	&10.100	&9.438	&8.661	&Cousins	&SAAO\\
	&			&49510.555	&11.921	&11.237	&10.215	&9.532	&8.731	&Cousins	&SAAO\\
\par
45	&EP~Lyr		&		&10.92	&10.69	&10.12	&	&	&Johnson	&\citet{79Dawson}\\
\par
46	&IRAS~19157		&49207.444	&11.862	&11.398	&10.624	&10.126	&9.588	&Cousins	&SAAO\\
	&			&51761.419	&12.160	&11.605	&10.753	&10.213	&9.632	&Cousins	&SAAO\\
\par
47	&IRAS~20056		&46654.41	&14.25	&13.44	&12.37	&11.79	&11.29	&Cousins	&\citet{88Menzies}\\
	&			&46627.46	&14.31	&13.61	&12.55	&11.94	&11.39	&Cousins	&\citet{88Menzies}\\
\par
48	&R~Sge			&		&11.04	&9.93	&8.84	&	&	&Johnson	&\citet{79Dawson}\\
	&			&46242.57	&10.43	&9.71	&8.79	&8.31	&7.84	&Cousins   	&\citet{87Goldsmith}\\
	&			&46243.58	&10.57	&9.79	&8.83	&8.32	&7.84	&Cousins   	&\citet{87Goldsmith}\\
\par
49	&V~Vul			&		&9.70	&9.09	&8.27	&	&	&Johnson	&\citet{79Dawson}\\\hline
\end{tabular}
\end{table}