120 FBS 1719+834 (CV?) Range: 13.5B Position: 17 13 13 +83 19 09 (J2000, from FBS precessed) Magnitude: unknown ID RA (2000) DEC X Y N V ERR B-V ERR a) Comparison star sequence 1 17 13 29.0 +83 21 33 40 169 4 11.552 0.077 0.533 0.078 2 17 10 44.9 +83 16 03 -248 -161 3 12.740 0.018 1.089 0.016 3 17 10 19.0 +83 22 47 -289 243 3 13.223 0.021 0.688 0.020 4 17 14 49.6 +83 21 17 180 153 3 14.002 0.011 0.850 0.012 5 17 11 01.9 +83 16 49 -218 -115 3 14.385 0.017 0.657 0.018 6 17 10 49.4 +83 18 37 -239 -7 3 14.719 0.019 0.971 0.017 7 17 13 24.7 +83 24 17 32 333 4 15.294 0.012 0.719 0.017 8 17 11 52.6 +83 18 01 -128 -43 4 15.779 0.006 0.627 0.020 9 17 14 47.0 +83 19 41 176 57 3 16.215 0.028 1.176 0.032 10 17 13 49.1 +83 20 32 75 108 4 16.963 0.025 0.783 0.017 11 17 13 31.3 +83 17 39 44 -65 3 17.345 0.035 0.799 0.037 12 17 14 14.2 +83 19 29 119 45 2 18.491 0.016 0.951 0.049 b) Wide-colour extension for CCD calibration 17 14 23.3 +83 13 39 137 -305 2 14.877 0.012 0.544 0.023 17 11 56.2 +83 23 19 -121 275 4 12.552 0.019 1.158 0.021 Notes: 1. The position of this potential UG variable has not been identified. The offsets given here are relative to the nominal position quoted in FBS (First Byurakan Spectral Sky Survey). 2. An examination of eight images of pixel data from the US Naval Observatory Precision Measuring Machine of images obtained between 1952 and 1997 showed no image down to magnitude 20 in the region of this suspected dwarf nova. 3. There are two bright stars that were not measured as part of this sequence. The first is very near the variable, and was measured by Tycho-2 with a magnitude V=8.78+/-0.01 and the other on the south edge of the field has a magnitude of V=9.05+/-0.02. Bruce Sumner 11 June 1999 Revised 14 December 2000