13. DY PERSEI (RCB) Range: 10.6-15.7V Position: 02 35 17.15 +56 08 44.9 (J2000, from .dat file) Magnitude: V=12.601 B-V=2.549 (from .dat file) ID RA (2000) DEC X Y N V ERR B-V ERR 1 02 35 13.8 +56 15 06 -28 381 2 10.057 0.006 0.332 0.001 2 02 35 44.7 +56 11 30 231 164 2 11.152 0.006 1.318 0.003 3 02 35 40.2 +56 10 18 193 93 2 11.161 0.017 0.421 0.025 4 02 35 14.3 +56 06 26 -24 -139 2 12.128 0.006 0.324 0.009 5 02 35 15.1 +56 06 00 -17 -165 2 12.498 0.000 0.493 0.001 6 02 35 22.3 +56 08 50 43 5 2 12.655 0.010 1.526 0.006 7 02 35 30.5 +56 05 27 112 -198 2 13.055 0.018 2.109 0.014 8 02 35 39.5 +56 06 37 187 -128 2 13.207 0.015 1.750 0.000 9 02 35 15.8 +56 07 43 -11 -62 2 13.524 0.008 1.010 0.009 10 02 34 59.8 +56 09 55 -145 70 2 13.692 0.010 1.594 0.008 11 02 35 15.7 +56 08 41 -12 -4 2 13.960 0.000 2.090 0.008 12 02 35 27.0 +56 07 57 83 -48 2 14.261 0.006 0.370 0.001 13 02 35 16.5 +56 08 04 -5 -42 2 14.517 0.017 0.854 0.000 14 02 35 20.7 +56 07 55 30 -50 2 14.783 0.008 1.463 0.004 15 02 35 15.7 +56 08 28 -12 -17 2 15.063 0.018 0.556 0.023 16 02 35 12.3 +56 07 07 -40 -98 2 15.627 0.026 0.725 0.008 17 02 35 34.1 +56 08 31 142 -14 2 16.023 0.014 1.018 0.016 18 02 35 17.9 +56 09 03 7 18 2 16.326 0.014 0.963 0.011 19 02 35 09.5 +56 08 27 -64 -18 2 16.456 0.019 1.494 0.002 20 02 35 22.2 +56 08 22 43 -23 2 16.958 0.008 1.292 0.018 Notes: 1. The first five stars are saturated, and their magnitudes are only approximate. Star #1 has reliable Tycho-2 photometry: 9.83V +/-0.03. Skiff also measured star #1: V=9.78, B-V=0.35. 2. This sequence and comments are based on Bob Modic's sequence (AAVSO-DIS, 23 April 1999). 3. Modic also listed five additional stars that were measured by Skiff (private correspondence with Modic) and Hoag (Publ. USNO 17,345,1961) that fill in the bright end of the sequence. 4. There is a Preliminary AAVSO "e" chart for this variable, dated 11/1998, with the following V magnitudes: ID Henden AAVSO 2 11.152 11.3 3 11.161 11.2 4 12.128 12.1 5 12.498 12.5 6 12.655 12.8 7 13.055 13.2 8 13.207 13.4 11 13.960 15.0 * 12 14.261 14.2 13 14.517 14.7 14 14.783 15.0 * Note a labelling error on the AAVSO chart. The star shown as 150 actually corresponds to star 15 (V=15.063 Henden). Star 11 is missing from the AAVSO sequence. Bruce Sumner Posted 020119