234 TK5 (LYRAE) (UG) Range: 14.3-<17.1p Position: 19 17 26.46 +37 10 41.2 (J2000, from .dat file) Magnitude: V=15.584 B-V=0.189 (from .dat file) ID RA (2000) DEC X Y N V ERR B-V ERR a) Comparison star sequence 1 19 17 23.4 +37 11 39 -37 57 1 11.123 0.000 0.543 0.000 2 19 17 21.4 +37 11 52 -61 70 1 11.580 0.001 0.500 0.001 3 19 17 21.0 +37 09 27 -66 -74 1 12.184 0.001 0.513 0.001 4 19 17 06.8 +37 06 05 -236 -276 1 12.552 0.001 0.784 0.001 5 19 17 08.3 +37 15 16 -217 275 1 13.095 0.001 0.553 0.001 6 19 17 21.6 +37 12 39 -58 118 1 13.363 0.001 0.514 0.001 7 19 17 30.2 +37 08 03 44 -158 1 13.942 0.002 0.492 0.003 8 19 17 19.9 +37 13 30 -79 169 1 14.236 0.002 0.707 0.003 9 19 17 16.1 +37 10 13 -125 -28 1 14.494 0.002 0.599 0.003 10 19 17 30.4 +37 10 05 47 -36 1 14.812 0.003 0.640 0.004 11 19 17 46.7 +37 10 09 242 -32 1 15.392 0.004 0.595 0.006 12 19 17 26.3 +37 12 12 -3 91 1 15.684 0.004 0.833 0.006 13 19 17 32.8 +37 10 38 75 -3 1 16.146 0.006 0.706 0.008 14 19 17 27.3 +37 10 29 9 -12 1 16.579 0.008 0.703 0.011 15 19 17 27.7 +37 10 53 14 12 1 17.442 0.015 1.242 0.028 b) Wide-colour extension for CCD calibration 19 17 31.8 +37 16 18 63 337 1 13.106 0.001 0.534 0.001 19 17 44.1 +37 11 47 210 66 1 14.207 0.002 1.284 0.004 Notes: 1. This single night sequence is expected to have errors of about +/-0.02 magnitude. 2. There are two bright stars in this field with accurate Tycho-2 magnitudes. One is at 19h 17m 15.5s +37d 14' 30" with V=8.65+/-0.01, and the other is at 19h 17m 11.8s +37d 13' 33" with V=8.82+/-0.02. 3. For discovery information see Kryachko, T.V., IBVS 5058, 2001. According to Kryachko TK5 the variable shows frequent outbursts, with a possible cycle around 60 days. Bruce Sumner 8 October 2001