12 FS ANDROMEDAE (UG) Range: 14.5-17.1V Position: 02 25 55.06 +37 34 05.5 (J2000, from .dat file) Magnitude: V=17.092 B-V=0.090 (Henden, single night) ID RA (2000) DEC X Y N V ERR B-V ERR a) Comparison star sequence 1 02 26 10.8 +37 39 27 186 322 3 13.363 0.032 0.481 0.005 2 02 26 09.2 +37 34 01 167 -4 3 13.774 0.010 0.976 0.002 3 02 25 49.2 +37 34 42 -70 36 3 14.014 0.005 0.792 0.006 4 02 26 14.2 +37 31 15 228 -170 3 14.468 0.006 0.465 0.010 5 02 26 16.0 +37 28 58 248 -307 3 14.694 0.000 0.562 0.008 6 02 25 56.9 +37 33 32 21 -33 3 15.098 0.011 0.803 0.006 7 02 26 08.4 +37 34 31 158 26 3 15.450 0.011 0.737 0.010 8 02 26 02.8 +37 33 44 92 -21 3 16.094 0.013 1.036 0.006 9 02 25 59.9 +37 34 31 57 26 3 16.638 0.027 1.264 0.008 10 02 25 54.7 +37 35 56 -5 111 3 17.410 0.022 0.674 0.014 11 02 25 48.9 +37 34 00 -74 -5 3 17.892 0.006 1.346 0.009 b) Wide-colour extension for CCD calibration 02 25 42.2 +37 33 03 -153 -62 3 13.902 0.009 0.416 0.011 02 26 15.4 +37 35 22 241 77 3 13.908 0.009 0.422 0.007 02 25 35.6 +37 37 16 -231 191 3 14.076 0.015 1.472 0.006 02 25 38.4 +37 32 34 -199 -91 3 13.999 0.006 1.540 0.003 Notes: 1. The AAVSO preliminary 'e' chart dated 01/1985 has two visual estimates that are common to this sequence. One is star #6 and the other is part of the wide colour extension. ID Henden AAVSO V V 13.999 13.8 6 15.098 15.0 2. There is a bright star in the north of this field that was too bright to be measured as part of this sequence. It is located at 02h 25m 52.1s +37d 37" 24" and has a reliable Tycho-2 magnitude of 9.52 +/-0.02. Bruce Sumner 31 July 1999 Revised 17 December 2000