Hello Tony, I agree with Mike's identification . Using your april 5 observations , without the second ( 12H51M44S ) , I got a mean deviation of about 0.3 deg. Mean deviation was only 0.1 deg on RA. = Here's an elset from OIG BBS 94056 A 23230 98097.16671891 -.00000226 00000-0 10000-3 14.2175 355.0782 5035127 34.4970 349.6652 1.67091369 Dan Karcher =