Re: Greves ROSAT IDs for CVs I don't know why, but a number of "well-known" samples of ROSAT CVs are omitted from Greaves' list. Perhaps ther may have been a problem in the matching algorithm. Examples: SW UMa: 083641.7 +532843 (2000.0) 1RXS_J083641.7+532844 0.254 -0.01 0.38 083642.4 +532830 (2000.0) 1RXPJ083642+5328.4 0.2510 0.11 -0.14 083643.2 +532839 (2000.0) 1RXPJ083643+5328.6 0.2530 0.00 0.18 V1159 Ori: 052859.7 -033359 (2000.0) 1RXS_J052859.8-033400 0.097 0.79 0.51 052900.1 -033359 (2000.0) 1RXPJ052900-0334.0 0.0660 0.73 -0.03 SW Vul: 200004.5 +225617 (2000.0) 1RXPJ200004+2256.2 0.0018 0.51 0.12 Regards, Taichi Kato