RXJ0643.9-2052 recent (cont'd) YYYYMMDD(UT) mag observer 20001025.808 <140 (A. Pearce) 20001027.646 <144 (R. Stubbings) 20001027.788 <140 (A. Pearce) 20001030.803 <140 (A. Pearce) 20001101.806 <140 (A. Pearce) 20001103.803 <140 (A. Pearce) 20001104.796 <140 (A. Pearce) 20001106.699 <144 (R. Stubbings) 20001107.710 <140 (R. Stubbings) 20001117.492 <140 (R. Stubbings) 20001118.690 <150 (A. Pearce) 20001119.792 <155 (A. Pearce) 20001120.497 <146 (R. Stubbings) 20001120.790 <155 (A. Pearce) 20001121.774 <155 (A. Pearce) 20001122.494 <140 (R. Stubbings) 20001122.794 <155 (A. Pearce) 20001123.494 <148 (R. Stubbings) 20001124.496 <140 (R. Stubbings) 20001124.780 <155 (A. Pearce)