22 XZ ERIDANI (UG) Range: 14.6-18.9V Position: 04 11 25.75 -15 23 23.2 (J2000, from .dat file) Magnitude: V=18.939 B-V=0.715 (.dat file, single night) ID RA (2000) DEC X Y N V ERR B-V ERR a) Comparison star sequence 1 04 11 28.6 -15 25 01 40 -98 4 10.603 0.024 0.905 0.004 2 04 11 04.4 -15 24 26 -309 -63 4 10.896 0.022 0.902 0.005 3 04 11 24.0 -15 19 52 -26 211 4 12.814 0.021 0.452 0.009 4 04 11 17.0 -15 19 31 -127 232 6 14.152 0.016 0.634 0.018 5 04 11 14.5 -15 24 16 -164 -53 6 14.441 0.018 0.608 0.018 6 04 11 48.9 -15 24 17 334 -54 4 14.774 0.000 0.793 0.008 7 04 11 40.6 -15 24 10 215 -47 4 15.128 0.023 0.573 0.016 8 04 11 14.3 -15 21 36 -166 107 4 15.429 0.020 0.514 0.026 9 04 11 43.4 -15 23 52 255 -29 4 15.684 0.016 0.648 0.022 10 04 11 18.2 -15 21 06 -110 137 4 16.385 0.017 0.667 0.027 11 04 11 20.8 -15 23 19 -73 4 4 16.907 0.026 0.675 0.022 12 04 11 24.2 -15 23 59 -23 -36 3 18.018 0.038 1.347 0.029 13 04 11 28.7 -15 22 32 42 51 4 19.377 0.088 1.023 0.290 b) Wide-colour extension for CCD calibration None available Notes: 1. Stars #1 and #2 are saturated and their magnitudres and colours are approximate. They both have mpore reliable Tycho-2 magnitudes; star #1 has V=10.61+/-0.06 and star #2 has V=10.96+/-0.08. 2. XZ Eri varies at mimimum between V=18.8 to V=19.3. This may be orbital modulation. Bruce Sumner Revised 6 December 2000 Second revision 24 January 2001