\begin{table}%t1
%\centering
\par
\small\caption{SuperWASP objects showing periodic variability, coincident with {\it ROSAT} sources and previously classified as periodic variable stars.} \label{tab1}
\begin{tabular}{lllrrrrllll}
\hline \hline
$N$ & SuperWASP ID & {\em ROSAT} ID & Period/d & SW V & B1 & R1 & Name & Type & Period/d & Period ref. \\
\hline
  & J001949.91+215652.3 & 2RXP J001949.8+215655 & 0.6604 & 12.73 & 12.38 & 11.86 & QR And & SuperSoft Source & 0.660458 & Chrastina et~al. (\cite{Chrastina2006})  \\
  & J003005.79+261726.5 & 2RXP J003006.0+261722 & 4.4366 & 14.88 & 15.38 & 14.69 & PX And & SW Sex & 4.8 & Stanishev et~al. (\cite{Stanishev2002})  \\
2 & J004117.33+342516.8 & 1RXS J004117.7+342513 & 2.8615 & 10.14 & 11.05 & 9.46 & QT And & BY Dra/UV Cet & 1.536 & Robb (\cite{Robb1995})  \\
3 & J005845.91+320620.3 & 1RXS J005846.2+320627 & 0.6840 & 10.65 & 10.43 & 9.45 & CP Psc & $\beta$ Lyr  & 0.684014 & Selam (\cite{Selam2004})  \\
  & J012728.88+290618.5 & 1RXS J012729.4+290622 & 0.4916 & 10.91 & 11.57 & 10.58 & SAVS J012728+290618 & W UMa  & 0.491495 & Maciejewski et~al. (\cite{Maciejewski2004})  \\
  & J015757.78+374822.4 & 2RXP J015757.2+374819 & 0.4122 & 11.53 & 11.77 & 11.23 & QX And & W UMa  & 0.4118165 & Pribulla et~al. (\cite{Pribulla2003})  \\
  & J020033.73+275319.2 & 1RXS J020034.3+275303 & 0.9716 & 9.19 & 8.85 & 8.50 & X Tri & Algol  & 0.9715352 & Samus et~al. (\cite{Samus2004})  \\
  & J022708.42+342320.4 & 1RXS J022709.2+342334 & 3.0990 & 11.77 & 12.82 & 11.97 & SAVS J022708+342319 & Cepheid & 3.1078 & Maciejewski et~al. (\cite{Maciejewski2004})  \\
4 & J035705.82+283751.5 & 1RXS J035706.3+283805 & 0.3647 & 11.87 & 12.81 & 10.92 & V1092 Tau & BY Dra/UV Cet + WD & 0.3646 & Jeffries et~al. (\cite{Jeffries1996}) \\
2 & J040651.34+254128.4 & 1RXS J040651.0+254159 & 1.6955 & 11.87 & 13.28 & 10.93 & V1195 Tau & PMS star  & 1.73 & Bouvier et~al. (\cite{Bouvier1997})  \\ 
2 & J040909.74+290130.2 & 1RXS J040909.7+290134 & 2.6538 & 10.79 & 11.56 & 10.24 & V1197 Tau & PMS star  & 2.74 & Bouvier et~al. (\cite{Bouvier1997}) \\ 
  & J041412.91+281212.3 & 2RXP J041413.2+281212 & 3.0802 & 10.60 & 10.05 & 7.49  & V773 Tau  & PMS star  & 3.43 & Bouvier et~al. (\cite{Bouvier1993}) \\ 
  & J041447.96+275234.7 & 1RXS J041448.0+275246 & 7.3808 & 11.73 & 14.08 & 10.95 & V1098 Tau & PMS star  & 7.2  & Bouvier et~al. (\cite{Bouvier1995})  \\ 
  & J041522.91+204417.0 & 2RXP J041523.5+204416 & 1.8232 & 10.84 & 11.23 & 10.12 & V1199 Tau & PMS star  & 1.83 & Bouvier et~al. (\cite{Bouvier1997})\\ 
  & J041831.10+282716.0 & 2RXP J041831.1+282718 & 1.8704 & 10.98 & 9.96 & 8.45 & V410 Tau & PMS star  & 1.872 & Shevchenko et~al. (\cite{Shevchenko1991}) \\ 
  & J041941.26+274948.3 & 1RXS J041941.7+274953 & 5.6425 & 12.25 & 13.75 & 11.14 & V1070 Tau & PMS star  & 5.64 & Bouvier et~al. (\cite{Bouvier1993}) \\ 
  & J042448.18+264315.8 & 1RXS J042448.4+264320 & 3.1805 & 11.03 & 14.00 & 10.88 & V1201 Tau & PMS star & 1.89 & Bouvier et~al. (\cite{Bouvier1997}) \\ 
  & J043116.85+215025.2 & 1RXS J043117.1+215010 & 2.7045 & 10.95 & 11.67 & 10.36 & V1202 Tau & PMS star  & 2.71 & Bouvier et~al. (\cite{Bouvier1997})  \\ 
  & J043310.02+243343.7 & 2RXP J043310.3+243345 & 2.7429 & 12.08 & 13.91 & 11.30 & V830 Tau & PMS star  & 2.75 & Shevchenko et~al. (1999)  \\ 
  & J044104.70+245106.1 & 1RXS J044105.2+245107 & 5.4654 & 12.38 & 14.25 & 11.65 & IW Tau & PMS star  & 5.45 & Bouvier et~al. (\cite{Bouvier1993})  \\ 
  & J045536.96+301755.1 & 1RXS J045536.6+301752 & 2.2321 & 11.24 & 12.34 & 10.55 & V396 Aur & PMS star  & 2.24 & Bouvier et~al. (\cite{Bouvier1993})  \\ 
2 & J045602.45+302051.6 & 1RXS J045601.7+302058 & 9.3898 & 11.34 & 14.39 & 10.99 & V397 Aur & PMS star  & 10.1 & Bouvier et~al. (\cite{Bouvier1995}) \\ 
  & J063111.02+305615.9 & 1RXS J063112.5+305614 & 1.6277 & 11.56 & 12.52 & 10.57 & HR Aur & RR Lyr  & 1.627777 & Loomis \& Schmidt (\cite{Loomis1989})  \\
  & J112541.63+423449.6 & 1RXS J112540.3+423449 & 0.4236 & 12.46 & 13.41 & 11.54 & BS UMa & Algol & 0.437016 & Meinunger \& Wenzel (\cite{Meinunger1968})  \\
3 & J114749.04+351335.2 & 1RXS J114749.2+351339 & 0.3519 & 10.95 & 11.83 & 10.32 & KM UMa & $\beta$ Lyr  & 0.351862 & Escola-Sirisi \& Garcia-Melendo (\cite{Escola1999})  \\
  & J123156.02+353015.6 & 1RXS J123156.4+353011 & 0.1530 & 15.25 & 15.54 & 14.36 & DI CVn & $\beta$ Lyr & 0.30599 & Akerlof et~al. (\cite{Akerlof2000})   \\ 
  & J125336.27+224735.4 & 1RXS J125336.5+224742 & 1.8832 & 13.95 & 16.14 & 13.33 & KW Com & eclipsing binary & ? &  \\
2 & J125740.26+351330.1 & 2RXP J125740.4+351324 & 3.3664 & 10.32 & 12.33 &  9.73 & BF CVn & BY Dra/UV Cet  & 3.17 & Pettersen (\cite{Pettersen1980})  \\
  & J130133.01+283754.2 & 1RXS J130133.9+283753 & 3.6411 & 10.10 & 9.51 & 8.15 & UX Com & RS CVn/Algol  & 3.642583 & Hall \& Kreiner (\cite{Hall1980})  \\
  & J133146.61+291636.6 & 1RXS J133146.9+291631 & 0.2683 & 11.19 & 12.94 & 11.80 & DG CVn & BY Dra/UV Cet  & 0.10835 & Robb et~al. (\cite{Robb1989})  \\
  & J141630.88+265525.1 & 2RXP J141631.0+265527 & 6.9998 & 10.55 & 11.19 & 9.98 & ROTSE1 J141630.86+265524.8 & Cepheid & 7.0209 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J142019.60+275856.5 & 1RXS J142019.9+275851 & 7.8284 & 11.13 & 12.34 & 10.50 & ROTSE1 J142019.68+275856.1 & Cepheid & 7.8677 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J143230.53+504940.6 & 1RXS J143230.5+504944 & 0.4207 &  9.56 &  9.94 & 9.14	 & EF Boo & W UMa type & 0.420608 & Samec et~al. (\cite{Samec1999}) \\
2 & J143819.50+363225.7 & 1RXS J143820.6+363230 & 0.2389 & 10.56 & 11.78 & 10.50 & GK Boo & Algol & 0.23889 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J160650.69+271634.5 & 1RXS J160651.0+271631 & 0.5889 & 10.66 & 11.04 & 10.19 & TW CrB & $\beta$ Lyr  & 0.58879 & Akerlof et~al. (\cite{Akerlof2000})  \\
2 & J162506.55+300225.8 & 1RXS J162506.5+300218 & 14.1106 & 10.03 & 11.41 & 9.64 & ROTSE1 J162506.53+300225.7 & Cepheid & 28.4301 & Akerlof et~al. (\cite{Akerlof2000})  \\
2 & J162510.31+405334.2 & 2RXP J162510.0+405340 & 15.4579 & 12.88 & 9.70 & 12.45 & V845 Her & Cepheid & 15.5 & Schmidt et~al. (\cite{Schmidt2004})a \\ 
  & J162817.29+371124.1 & 2RXP J162817.0+371116 & 0.3370 & 11.70 & 11.89 & 11.14 & ROTSE1 J162817.23+371123.9 & W UMa  & 0.33704 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J165547.87+351057.6 & 2RXP J165548.1+351100 & 0.3582 & 10.39 & 10.83 & 9.97 & V829 Her & W UMa & 0.3581 & Robb (\cite{Robb1989})  \\
2 & J165749.80+352032.8 & 2RXP J165749.4+352033 & 1.7002 & 13.83 & 14.89 & 13.88 & HZ Her/Her X-1 & X-ray binary & 1.700175 & Deeter et~al. (\cite{Deeter1991})  \\
  & J170121.84+420949.9 & 1RXS J170121.5+420939 & 0.3702 & 9.66 & 10.12 & 9.18 & SAO 46441 & W UMa & 0.37015 & anon. 2005 (IBVS 5600)  \\
  & J170420.20+392858.7 & 1RXS J170420.7+392909 & 1.5929 & 11.70 & 12.43 & 10.97 & ROTSE1 J170420.17+392858.0 & W UMa  & 1.593435 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J170757.96+291915.0 & 1RXS J170757.4+291922 & 3.0816 & 12.04 & 12.75 & 11.01 & ROTSE1 J170757.98+291914.9 & Cepheid & 3.077795 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J171256.18+333119.2 & 2RXP J171256.0+333121 & 0.1165 & 13.00 & 12.41 & 12.69 & V795 Her & novalike & 0.11588 & Mironov et~al. (\cite{Mironov1983})  \\
  & J171330.96+232026.4 & 1RXS J171331.0+232021 & 2.7852 & 10.64 & 11.45 & 10.22 & ROTSE1 J171330.93+232026.3 & Cepheid & 2.75599 & Akerlof et~al. (\cite{Akerlof2000})  \\
   \hline
 & J172339.79+352757.2 & 1RXS J172339.8+352757 & 23.6758 & 11.65 & 12.09 & 10.81 & ROTSE1 J172339.92+352759.3 & Cepheid & 23.675575 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J172425.27+493837.2 & 1RXS J172425.4+493831 & 0.5295 & 9.62 & 10.09 & 9.29 & V878 Her & $\beta$ Lyr & 0.529478 & Kaiser et~al. (\cite{Kaiser1996})  \\
  & J172927.24+352404.9 & 1RXS J172927.2+352402 & 14.2202 & 11.81 & 13.55 & 10.96 & ROTSE1 J172927.28+352403.0 & Cepheid & 13.7084 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J174311.06+334948.9 & 1RXS J174311.5+334950 & 6.3627 & 11.74 & 12.82 & 10.57 & ROTSE1 J174311.03+334948.1 & Cepheid & 6.33071 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J174605.24+312104.5 & 1RXS J174604.8+312058 & 0.3789 & 12.43 & 13.94 & 11.44 & ROTSE1 J174605.20+312104.1 & RR Lyr  & 0.378799 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J175838.51+220846.7 & 1RXS J175838.2+220835 & 7.9603 & 9.90 & 9.24 & 8.01 & MM Her & RS CVn/Algol & 7.960322 & Hall \& Kreiner (\cite{Hall1980})  \\
  & J180147.31+273910.4 & 1RXS J180147.5+273918 & 6.2201 & 10.42 & 11.06 & 9.74 & ROTSE1 J180147.49+273907.4 & Cepheid & 6.07072 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J180213.87+470112.3 & 1RXS J180214.5+470112 & 0.2944 & 10.94 & 11.82 & 10.34 & ROTSE1 J180213.83+470112.3 & W UMa  & 0.29433 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J180730.28+455131.9 & 2RXP J180730.0+455136 & 0.1936 & 15.16 & 12.99 & 11.46 & DQ Her & nova & 0.19362 & Zhang et~al. (\cite{Zhang1995})  \\
  & J180853.52+370707.3 & 1RXS J180853.5+370702 & 8.3429 & 11.87 & 13.43 & 13.66 & ROTSE1 J180853.47+370708.1 & Cepheid & 8.214765 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J181024.11+332411.1 & 1RXS J181024.3+332402 & 2.8808 & 10.26 & 9.64 & 8.31 & PW Her & RS CVn/Algol & 2.8809 & Qian et~al. (\cite{Qian2003})  \\
  & J181132.84+235512.6 & 1RXS J181132.2+235516 & 8.4645 & 10.79 & 11.75 & 10.05 & V836 Her & Algol & 8.4678 & Brelstaff (\cite{Brelstaff1991})  \\
2 & J181848.08+342233.8 & 1RXS J181848.1+342237 & 8.5030 & 12.40 & 13.22 & 11.66 & ROTSE1 J181848.06+342234.6 & Cepheid & 8.35521 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J182538.72+181740.1 & 1RXS J182538.4+181741 & 8.8007 & 9.74 & 9.24 & 7.94 & AW Her & RS CVn/Algol & 8.80076 & Hall \& Kreiner (\cite{Hall1980})  \\
  & J182656.97+174402.4 & 1RXS J182656.6+174400 & 31.8786 & 9.43 & 8.18 & 6.73 & V992 Her & semi-reg. pulsator & 31.786 & Koen \& Eyer (\cite{Koen2002})  \\
  & J182913.01+064713.7 & 1RXS J182912.6+064717 & 0.3753 & 9.70 & 9.95 & 9.06 & HD170451 & W UMa  & 0.375296 & Koppelman et~al. (\cite{Koppelman2002})  \\
2 & J182931.47+223424.4 & 1RXS J182931.3+223426 & 7.6650 & 11.48 & 12.74 & 10.74 & V1011 Her & Algol & ? &  \\
  & J183053.08+485848.6 & 2RXP J183052.8+485840 & 0.3476 & 11.64 & 12.11 & 11.15 & ROTSE1 J183052.99+485848.8 & W UMa  & 0.347625 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J184633.09+485444.8 & 1RXS J184632.2+485443 & 5.0703 & 11.80 & 12.82 & 11.59 & ROTSE1 J184633.30+485435.3 & Cepheid & 5.09123 & Akerlof et~al. (\cite{Akerlof2000})  \\
  & J204300.17+264833.7 & 1RXS J204300.0+264845 & 2.1547 & 11.24 & 10.25 & 8.63 & V401 Vul & BY Dra & 1.9252 & Koen \& Eyer (\cite{Koen2002})  \\
  & J215443.38+143327.8 & 1RXS J215443.6+143325 & 14.7539 & 9.21 & 8.86 & 7.67 & DF Peg & Algol & 14.6987 & Brancewicz \& Dworak (\cite{Brancewicz1980})  \\
  & J225154.86+314457.5 & 1RXS J225153.6+314513 & 1.6404 & 11.12 & 13.22 & 11.13 & GT Peg & BY Dra/UV Cet  & 1.641 & Alekseev (\cite{Alekseev1998})  \\
  & J231653.34+254310.1 & 1RXS J231653.6+254312 & 11.6361 & 9.54 & 9.12 & 7.55 & EZ Peg & RS CVn & 11.766 & Koen \& Eyer (\cite{Koen2002})  \\
\hline
\end{tabular}
\end{table}