61. V1028 CYGNI (UGSU) Range: 12.7-18.8V Position: 20 00 56.47 +56 56 37.2 (J2000, Henden, June 1999) Magnitude: V=18.767 B-V=0.031 (Henden, June 1999) a) Comparison star sequence ID RA (2000) DEC X Y N V ERR B-V ERR 1 20 00 30.7 +56 59 16 -211 159 3 11.054 0.005 0.247 0.008 2 20 01 19.3 +56 57 22 186 45 3 11.560 0.006 0.351 0.004 3 20 01 12.9 +56 53 17 135 -200 3 12.041 0.005 0.574 0.007 4 20 00 18.6 +56 56 44 -310 7 3 12.374 0.006 0.650 0.014 5 20 01 33.8 +56 57 53 305 75 3 12.667 0.011 0.709 0.006 6 20 01 16.6 +56 53 31 165 -186 3 13.200 0.019 0.698 0.009 7 20 00 42.5 +56 54 59 -115 -98 3 13.572 0.015 1.147 0.022 8 20 01 02.5 +56 55 40 49 -57 3 14.202 0.012 0.744 0.014 9 20 00 54.9 +56 57 12 -13 35 3 14.370 0.009 0.673 0.009 10 20 00 55.7 +56 55 52 -6 -45 3 14.632 0.009 0.700 0.011 11 20 00 53.4 +56 58 23 -26 106 3 15.323 0.009 0.491 0.008 12 20 01 00.4 +56 58 15 31 98 3 15.409 0.028 0.924 0.020 13 20 01 02.9 +56 57 51 52 74 3 15.577 0.013 1.089 0.040 14 20 00 45.1 +56 56 06 -94 -31 3 16.200 0.031 0.634 0.017 15 20 00 59.4 +56 56 17 23 -20 3 17.032 0.068 1.055 0.071 16 20 01 01.2 +56 56 49 39 12 3 17.410 0.045 1.391 0.075 17 20 01 03.8 +56 56 39 60 2 3 18.789 0.157 0.813 0.075 b) Wide-colour extension for CCD calibration 20 00 30.9 +57 00 07 -209 210 3 13.128 0.010 0.272 0.004 20 00 17.7 +56 57 49 -318 72 3 14.733 0.025 1.413 0.017 20 01 34.5 +56 55 47 311 -50 3 15.815 0.013 1.479 0.065 Notes: 1. The three faintest magnitudes have large errors, particularly the 18.789V star. They are included here mainly for guidance purposes, and should be used with care. 2. Determined to be a SU UMa-type dwarf nova by Baba 2000, PASJ, 52, 429, when he found a superhump period of 0.6154d. 3. Seen at a minimum magnitude of V=18.8 on a single image. Bruce Sumner Revised 29 June 1999