\begin{table}%t2
\caption{\label{table_fragmentB}Component B: observations log and results in the broadband red filter.} 
\small%\centerline
 {
\begin{tabular}{c c c c c c c c c c c c c}
\hline \hline
Date & Night &cc&UT& Filter & $r_{\rm h}$& $\Delta$ &PA & $\alpha$ &Af$\rho_{10 000}$&Af$\rho_{5000}$&Af$\rho_{4000}$ & $m$\\
2006 & & & & &(AU)& (AU)&(deg)&(deg)&(cm)&(cm)&(cm)& \\
\hline
Feb. 08& pc&n& 03:10--03:26& $R$& 1.82&1.10&280.9&27.5&--&--&--&--1.52\\
Mar. 04& pp&n& 02:40--03:04& $R$& 1.60&0.73&265.1&25.8&22.1&24.0&24.7&--1.04\\
Mar. 25& mc&y& 04:34--04:56& $R$& 1.40&0.47&240.2&25.4&28.0&31.3&32.6&--1.14\\
Mar. 31& pc&y& 02:30--02:43& $R$& 1.34&0.40&231.6&26.4&36.8&39.8&40.4&--1.14\\
Apr. 05& pc&y& 23:09& $R$& 1.29&0.35&223.2&28.0&327.4&438.2&470.9&--1.63\\
Apr. 11& mc&y& 01:40--02:01& $R$& 1.25&0.30&216.5&30.3&224.8&208.7&202.1&--0.96\\
Apr. 13& mc&y& 01:52--02:06& $R$& 1.23&0.28&214.1&31.3&147.5&123.6&114.9&--0.86\\
Apr. 16& pc&y& 00:33& $R$& 1.20&0.25&211.0&33.2&88.5&76.6&72.6&--0.83\\
Apr. 26& pp&n& 01:43--01:59& $R$& 1.12&0.17&205.5&42.2&44.0&46.8&48.2&--1.14\\
May 02& pp&n& 02:06--02:17R& $R$& 1.08&0.12&209.0&50.9&59.7&59.8&57.9&-0.95\\
May 08& mc&n& 04:34--04.35& $R$& 1.04&0.08&224.4&65.9&s&s&s&--1.96\\
May 09& pc&y& 04:20--04:27& $R$& 1.03&0.08&228.7&69.4&--&958.9&969.4&--1.01\\
May 09& pc&n& 22:26--22:36& $R$& 1.03&0.08&232.2&72.3&--&306.9&300.1&--0.89\\
May 10& pc&n& 22:56--23:10& {\it BVRI}& 1.02&0.07&237.2&76.6&--&--&--&--0.92\\
May 13& pp&n& 00:03--00:17& {\it UBVRI}& 1.01&0.07&246.8&85.9&--&124.4&122.3&--0.92\\
May 14& pp&n& 00:43--01:06& {\it UBVRI}&1.01&0.07&250.7&90.8&--&--&98.8&--0.94\\
May 16& pc&y& 02:52--03:03& $R$&1.00&0.07&255.4&99.9&--&78.7&77.8&--0.90\\
May 18& pc&y& 03:20--03:32& $R$& 0.99&0.07&255.9&106.8&--&63.6&62.7&--0.90\\
May 24& pc&y& 03:38--03:46& $R$& 0.96&0.11&248.2&114.3&37.8&42.7&45.0&--1.16\\
May 25& pc&n& 03:29--03:37& $R$& 0.96&0.11&246.9&114.4&--&--&--&--1.10\\
\hline
\end{tabular}}
\medskip
Night: mc~= mostly clear, pp~= partially photometric, pc~= partially cloudy;
cc: presence (y) or absence (n) of cross-calibration;
$r_{\rm h}$ and $\Delta$ are the heliocentric and geocentric distance of the component during the observations, respectively;
PA~is the position angle of the extended Sun-component radius vector;
$\alpha$~is the phase angle Sun-component-observer;
Af$\rho$~values are derived for three photometric circular apertures with radius~10~000, 5000, and 4000~km from the comet's nucleus. Errors on Af$\rho$ are of the order of 10\% and are mainly due to
absolute flux calibration errors;
$m$: slope of the linear fit log~$B$~vs. log~$\rho$. Standard deviation of these fits is always lower than 1\%. The $m$~value on May~8 was derived discarding the saturated part close to the
optocenter of the image;
s: saturated image.
\end{table}