Now the altitude of the target is very low, we will terminate the observation of IY UMa on this evening soon. If the weather is good, we will have more long run before morning. The magnitude is not significantly changed from my previous report. I attached the eclipse ephemeris of IY UMa below. Please note that: 1. The time is heliocentric, not geocentric. 2. The ephemeris is calculated from the timings of mid-eclipse observed in 2000 January superoutburst (Uemura et al. 2000, PASJ 52,L9). A normal outburst was observed on 2000 April, but these data are not included for the calculation (a few minutes error of the ephemeris was reported during the normal outburst). Regards, Makoto Uemura --------------- September (UT, heliocentric) d h m s cycle 29 9 52 09.304330 3459 29 11 38 35.404795 3460 29 13 25 01.505260 3461 29 15 11 27.605765 3462 29 16 57 53.706231 3463 29 18 44 19.806696 3464 29 20 30 45.907201 3465 29 22 17 12.007666 3466 30 0 3 38.108131 3467 30 1 50 04.208636 3468 30 3 36 30.309101 3469 30 5 22 56.409607 3470 30 7 9 22.510072 3471 30 8 55 48.610537 3472 30 10 42 14.711042 3473 30 12 28 40.811507 3474 30 14 15 06.911972 3475 30 16 1 33.012477 3476 30 17 47 59.112943 3477 30 19 34 25.213448 3478 30 21 20 51.313913 3479 30 23 7 17.414378 3480