IOTA/IOTA-ES occultation update for (5014) Gorchakov / UCAC4 333-125817 event on 2024 Oct 16, 01:57 UT Visible from Summary ------- On 2024 Oct 16 UT, the 19.8223627939115 km diameter asteroid (5014) Gorchakov will occult a 11.8 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.80 mag to 17.59 mag (the magnitude of the asteroid) for at most 0.610 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2024 Oct 16, 01:54 - 2024 Oct 16, 02:00 * geocentric midpoint of event [JD]: 2460599.58152579 * magnitude of target star: 11.80 * magnitude drop [mag]: 5.80 * estimated maximum duration [s]: 0.610 * Moon: 97 % sunlit, 95° distance * Sun: 64° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.003", 94°) * approx speed of asteroid's shadow [km/s]: 32.6999 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 333-125817 by 5014 Gorchakov on 2024 Oct 16 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 142 0 0 34 49 48 1 54 46.7 1 120 46 34 42 8 34 57 29 34 37 35 35 2 2 .... 143 0 0 34 22 10 1 54 46.8 2 120 46 34 14 30 34 29 50 34 9 58 34 34 24 -0.39 144 0 0 33 54 32 1 54 46.9 3 121 47 33 46 53 34 2 12 33 42 21 34 6 45 -0.51 145 0 0 33 26 54 1 54 47.1 4 121 48 33 19 15 33 34 33 33 14 44 33 39 6 -0.57 146 0 0 32 59 17 1 54 47.4 4 122 48 32 51 39 33 6 55 32 47 8 33 11 28 -0.60 147 0 0 32 31 41 1 54 47.7 5 122 49 32 24 4 32 39 19 32 19 34 32 43 51 -0.63 148 0 0 32 4 9 1 54 48.2 6 123 49 31 56 33 32 11 46 31 52 2 32 16 18 -0.64 149 0 0 31 36 40 1 54 48.6 7 123 49 31 29 4 31 44 16 31 24 34 31 48 48 -0.65 150 0 0 31 9 15 1 54 49.2 8 124 50 31 1 40 31 16 51 30 57 11 31 21 22 -0.66 151 0 0 30 41 56 1 54 49.8 9 124 50 30 34 21 30 49 30 30 29 52 30 54 1 -0.67 152 0 0 30 14 42 1 54 50.5 10 125 51 30 7 9 30 22 16 30 2 40 30 26 46 -0.67 153 0 0 29 47 35 1 54 51.3 11 126 51 29 40 3 29 55 8 29 35 35 29 59 38 -0.68 154 0 0 29 20 36 1 54 52.1 12 126 51 29 13 4 29 28 8 29 8 37 29 32 37 -0.68 155 0 0 28 53 45 1 54 53.0 13 127 52 28 46 15 29 1 17 28 41 48 29 5 45 -0.69 156 0 0 28 27 4 1 54 54.0 14 127 52 28 19 34 28 34 35 28 15 8 28 39 2 -0.69 157 0 0 28 0 33 1 54 55.0 15 128 52 27 53 4 28 8 2 27 48 38 28 12 29 -0.69 158 0 0 27 34 12 1 54 56.2 16 128 52 27 26 44 27 41 41 27 22 19 27 46 7 -0.69 159 0 0 27 8 3 1 54 57.4 17 129 52 27 0 36 27 15 31 26 56 12 27 19 57 -0.70 160 0 0 26 42 7 1 54 58.6 18 129 52 26 34 41 26 49 34 26 30 17 26 53 59 -0.70 161 0 0 26 16 24 1 54 59.9 19 130 52 26 8 59 26 23 50 26 4 35 26 28 14 -0.70 162 0 0 25 50 54 1 55 1.3 20 130 53 25 43 30 25 58 19 25 39 7 26 2 43 -0.70 163 0 0 25 25 40 1 55 2.8 21 131 53 25 18 17 25 33 4 25 13 54 25 37 27 -0.70 164 0 0 25 0 41 1 55 4.3 22 131 53 24 53 19 25 8 3 24 48 57 25 12 26 -0.70 165 0 0 24 35 57 1 55 6.0 23 132 52 24 28 37 24 43 19 24 24 15 24 47 41 -0.70 166 0 0 24 11 31 1 55 7.6 24 132 52 24 4 11 24 18 52 23 59 51 24 23 13 -0.71 167 0 0 23 47 22 1 55 9.4 25 133 52 23 40 3 23 54 42 23 35 43 23 59 3 -0.71 168 0 0 23 23 31 1 55 11.2 26 134 52 23 16 13 23 30 50 23 11 54 23 35 10 -0.71 169 0 0 22 59 59 1 55 13.0 27 134 52 22 52 42 23 7 16 22 48 24 23 11 36 -0.71 170 0 0 22 36 46 1 55 15.0 28 135 52 22 29 30 22 44 2 22 25 12 22 48 22 -0.71 171 0 0 22 13 53 1 55 16.9 28 135 51 22 6 39 22 21 8 22 2 21 22 25 27 -0.71 172 0 0 21 51 21 1 55 19.0 29 136 51 21 44 7 21 58 35 21 39 50 22 2 53 -0.71 173 0 0 21 29 10 1 55 21.1 30 137 51 21 21 57 21 36 23 21 17 41 21 40 40 -0.71 174 0 0 21 7 20 1 55 23.3 31 137 50 21 0 8 21 14 32 20 55 53 21 18 49 -0.71 175 0 0 20 45 52 1 55 25.5 32 138 50 20 38 42 20 53 4 20 34 27 20 57 20 -0.71 176 0 0 20 24 48 1 55 27.8 33 138 49 20 17 38 20 31 58 20 13 24 20 36 13 -0.72 177 0 0 20 4 6 1 55 30.1 34 139 49 19 56 58 20 11 15 19 52 44 20 15 30 -0.72 178 0 0 19 43 48 1 55 32.5 35 140 48 19 36 41 19 50 56 19 32 28 19 55 10 -0.72 179 0 0 19 23 54 1 55 35.0 36 140 48 19 16 48 19 31 1 19 12 36 19 35 15 -0.72 -180 0 0 19 4 25 1 55 37.5 36 141 47 18 57 20 19 11 31 18 53 8 19 15 44 -0.72 -179 0 0 18 45 21 1 55 40.0 37 142 47 18 38 17 18 52 26 18 34 5 18 56 38 -0.72 -178 0 0 18 26 42 1 55 42.6 38 143 46 18 19 39 18 33 46 18 15 28 18 37 58 -0.72 -177 0 0 18 8 29 1 55 45.3 39 143 46 18 1 27 18 15 32 17 57 16 18 19 43 -0.72 -176 0 0 17 50 42 1 55 48.0 40 144 45 17 43 41 17 57 44 17 39 31 18 1 55 -0.72 -175 0 0 17 33 22 1 55 50.7 41 145 44 17 26 21 17 40 23 17 22 12 17 44 33 -0.72 -174 0 0 17 16 28 1 55 53.5 41 146 44 17 9 29 17 23 29 17 5 20 17 27 38 -0.72 -173 0 0 17 0 2 1 55 56.3 42 147 43 16 53 4 17 7 2 16 48 55 17 11 11 -0.72 -172 0 0 16 44 4 1 55 59.2 43 148 42 16 37 6 16 51 2 16 32 58 16 55 11 -0.72 -171 0 0 16 28 33 1 56 2.1 44 149 42 16 21 36 16 35 30 16 17 28 16 39 38 -0.72 -170 0 0 16 13 30 1 56 5.0 44 150 41 16 6 34 16 20 27 16 2 27 16 24 34 -0.72 -169 0 0 15 58 55 1 56 8.0 45 151 40 15 52 0 16 5 51 15 47 54 16 9 58 -0.72 -168 0 0 15 44 50 1 56 11.0 46 152 39 15 37 55 15 51 45 15 33 49 15 55 51 -0.72 -167 0 0 15 31 13 1 56 14.0 46 153 39 15 24 19 15 38 7 15 20 13 15 42 13 -0.72 -166 0 0 15 18 5 1 56 17.1 47 154 38 15 11 12 15 24 58 15 7 7 15 29 4 -0.73 -165 0 0 15 5 26 1 56 20.2 48 155 37 14 58 34 15 12 19 14 54 29 15 16 25 -0.73 -164 0 0 14 53 17 1 56 23.3 48 156 36 14 46 25 15 0 9 14 42 21 15 4 14 -0.73 -163 0 0 14 41 38 1 56 26.4 49 157 35 14 34 47 14 48 29 14 30 43 14 52 34 -0.73 -162 0 0 14 30 28 1 56 29.6 49 159 34 14 23 38 14 37 19 14 19 35 14 41 24 -0.73 -161 0 0 14 19 49 1 56 32.8 50 160 34 14 12 59 14 26 39 14 8 56 14 30 43 -0.73 -160 0 0 14 9 40 1 56 36.0 50 161 33 14 2 51 14 16 30 13 58 48 14 20 33 -0.73 -159 0 0 14 0 1 1 56 39.3 51 162 32 13 53 12 14 6 50 13 49 10 14 10 53 -0.73 -158 0 0 13 50 53 1 56 42.5 51 164 31 13 44 5 13 57 41 13 40 3 14 1 44 -0.73 -157 0 0 13 42 15 1 56 45.8 52 165 30 13 35 27 13 49 3 13 31 26 13 53 6 -0.73 -156 0 0 13 34 8 1 56 49.1 52 167 29 13 27 21 13 40 56 13 23 20 13 44 58 -0.73 -155 0 0 13 26 32 1 56 52.4 52 168 28 13 19 45 13 33 19 13 15 44 13 37 21 -0.73 -154 0 0 13 19 27 1 56 55.7 53 169 27 13 12 41 13 26 14 13 8 40 13 30 16 -0.73 -153 0 0 13 12 53 1 56 59.1 53 171 27 13 6 7 13 19 40 13 2 6 13 23 41 -0.73 -152 0 0 13 6 50 1 57 2.4 53 172 26 13 0 4 13 13 36 12 56 4 13 17 37 -0.73 -151 0 0 13 1 18 1 57 5.8 53 174 25 12 54 33 13 8 4 12 50 33 13 12 5 -0.73 -150 0 0 12 56 18 1 57 9.1 53 175 24 12 49 33 13 3 4 12 45 33 13 7 4 -0.73 -149 0 0 12 51 49 1 57 12.5 54 177 23 12 45 4 12 58 34 12 41 4 13 2 35 -0.73 -148 0 0 12 47 51 1 57 15.9 54 179 22 12 41 7 12 54 36 12 37 7 12 58 37 -0.73 -147 0 0 12 44 25 1 57 19.2 54 180 21 12 37 41 12 51 10 12 33 41 12 55 10 -0.73 -146 0 0 12 41 30 1 57 22.6 54 182 20 12 34 46 12 48 15 12 30 47 12 52 15 -0.73 -145 0 0 12 39 7 1 57 26.0 54 183 19 12 32 23 12 45 52 12 28 24 12 49 52 -0.73 -144 0 0 12 37 16 1 57 29.3 54 185 18 12 30 32 12 44 0 12 26 33 12 48 0 -0.73 -143 0 0 12 35 56 1 57 32.7 54 186 17 12 29 12 12 42 40 12 25 13 12 46 40 -0.73 -142 0 0 12 35 7 1 57 36.1 54 188 16 12 28 24 12 41 52 12 24 24 12 45 52 -0.73 -141 0 0 12 34 51 1 57 39.4 53 190 15 12 28 7 12 41 35 12 24 8 12 45 35 -0.73 -140 0 0 12 35 5 1 57 42.8 53 191 14 12 28 22 12 41 50 12 24 22 12 45 50 -0.73 -139 0 0 12 35 52 1 57 46.1 53 193 13 12 29 8 12 42 36 12 25 9 12 46 36 -0.73 -138 0 0 12 37 10 1 57 49.4 53 194 12 12 30 26 12 43 54 12 26 27 12 47 54 -0.73 -137 0 0 12 38 59 1 57 52.8 53 196 11 12 32 15 12 45 44 12 28 16 12 49 44 -0.73 -136 0 0 12 41 20 1 57 56.1 52 197 10 12 34 36 12 48 5 12 30 37 12 52 5 -0.73 -135 0 0 12 44 13 1 57 59.4 52 198 9 12 37 29 12 50 58 12 33 29 12 54 58 -0.73 -134 0 0 12 47 37 1 58 2.6 51 200 8 12 40 52 12 54 22 12 36 53 12 58 22 -0.73 -133 0 0 12 51 32 1 58 5.9 51 201 7 12 44 48 12 58 17 12 40 48 13 2 18 -0.73 -132 0 0 12 55 59 1 58 9.1 51 202 7 12 49 14 13 2 45 12 45 14 13 6 45 -0.73 -131 0 0 13 0 57 1 58 12.4 50 204 6 12 54 12 13 7 43 12 50 12 13 11 44 -0.73 -130 0 0 13 6 27 1 58 15.6 50 205 5 12 59 41 13 13 13 12 55 41 13 17 14 -0.73 -129 0 0 13 12 27 1 58 18.7 49 206 4 13 5 41 13 19 13 13 1 41 13 23 15 -0.73 -128 0 0 13 18 59 1 58 21.9 49 207 3 13 12 12 13 25 45 13 8 12 13 29 47 -0.73 -127 0 0 13 26 1 1 58 25.0 48 209 2 13 19 15 13 32 48 13 15 14 13 36 50 -0.73 -126 0 0 13 33 35 1 58 28.1 47 210 1 13 26 48 13 40 22 13 22 46 13 44 24 -0.73 -125 0 0 13 41 39 1 58 31.2 47 211 0 13 34 51 13 48 27 13 30 50 13 52 29 -0.73 -124 0 0 13 50 14 1 58 34.2 46 212 -1 13 43 26 13 57 2 13 39 24 14 1 5 -0.73 -123 0 0 13 59 19 1 58 37.3 46 213 -2 13 52 31 14 6 8 13 48 29 14 10 11 -0.73 -122 0 0 14 8 55 1 58 40.2 45 214 -3 14 2 6 14 15 45 13 58 4 14 19 48 -0.73 -121 0 0 14 19 1 1 58 43.2 44 215 -4 14 12 12 14 25 52 14 8 9 14 29 55 -0.73 -120 0 0 14 29 38 1 58 46.1 43 216 -5 14 22 47 14 36 28 14 18 44 14 40 32 -0.73 -119 0 0 14 40 44 1 58 49.0 43 217 -6 14 33 53 14 47 35 14 29 49 14 51 40 -0.73 -118 0 0 14 52 20 1 58 51.8 42 217 -7 14 45 28 14 59 12 14 41 24 15 3 17 -0.73 -117 0 0 15 4 25 1 58 54.6 41 218 -8 14 57 33 15 11 18 14 53 29 15 15 23 -0.73 -116 0 0 15 17 0 1 58 57.3 40 219 -9 15 10 7 15 23 54 15 6 3 15 27 59 -0.73 -115 0 0 15 30 4 1 59 0.1 40 220 -10 15 23 11 15 36 59 15 19 6 15 41 5 -0.73 -114 0 0 15 43 38 1 59 2.7 39 221 -11 15 36 43 15 50 33 15 32 38 15 54 39 -0.73 -113 0 0 15 57 40 1 59 5.4 38 221 -12 15 50 44 16 4 35 15 46 38 16 8 42 -0.73 -112 0 0 16 12 10 1 59 7.9 37 222 -13 16 5 14 16 19 6 16 1 7 16 23 14 -0.73 -111 0 0 16 27 9 1 59 10.5 36 223 -14 16 20 12 16 34 6 16 16 5 16 38 14 -0.73 -110 0 0 16 42 35 1 59 13.0 36 223 -15 16 35 38 16 49 33 16 31 30 16 53 42 -0.73 -109 0 0 16 58 30 1 59 15.4 35 224 -16 16 51 31 17 5 29 16 47 23 17 9 38 -0.73 -108 0 0 17 14 51 1 59 17.8 34 225 -17 17 7 52 17 21 51 17 3 43 17 26 1 -0.73 -107 0 0 17 31 40 1 59 20.1 33 225 -18 17 24 40 17 38 41 17 20 31 17 42 51 -0.73 -106 0 0 17 48 56 1 59 22.4 32 226 -19 17 41 54 17 55 57 17 37 45 18 0 8 -0.73 -105 0 0 18 6 38 1 59 24.6 31 227 -20 17 59 36 18 13 40 17 55 25 18 17 51 -0.73 -104 0 0 18 24 46 1 59 26.8 30 227 -21 18 17 43 18 31 49 18 13 32 18 36 1 -0.73 -103 0 0 18 43 19 1 59 28.9 29 228 -22 18 36 15 18 50 24 18 32 4 18 54 36 -0.73 -102 0 0 19 2 18 1 59 30.9 28 228 -23 18 55 13 19 9 24 18 51 2 19 13 37 -0.73 -101 0 0 19 21 42 1 59 32.9 28 229 -24 19 14 36 19 28 49 19 10 24 19 33 2 -0.73 -100 0 0 19 41 31 1 59 34.8 27 229 -25 19 34 24 19 48 38 19 30 11 19 52 52 -0.73 - 99 0 0 20 1 43 1 59 36.7 26 230 -26 19 54 35 20 8 52 19 50 21 20 13 6 -0.73 - 98 0 0 20 22 19 1 59 38.5 25 230 -27 20 15 10 20 29 29 20 10 56 20 33 44 -0.73 - 97 0 0 20 43 18 1 59 40.2 24 231 -28 20 36 8 20 50 29 20 31 53 20 54 45 -0.73 - 96 0 0 21 4 40 1 59 41.9 23 231 -29 20 57 29 21 11 52 20 53 14 21 16 8 -0.73 - 95 0 0 21 26 24 1 59 43.5 22 232 -30 21 19 12 21 33 37 21 14 56 21 37 54 -0.74 - 94 0 0 21 48 29 1 59 45.1 21 232 -31 21 41 16 21 55 43 21 37 0 22 0 1 -0.74 - 93 0 0 22 10 56 1 59 46.5 20 233 -32 22 3 42 22 18 11 21 59 24 22 22 29 -0.74 - 92 0 0 22 33 43 1 59 47.9 19 233 -33 22 26 27 22 40 59 22 22 9 22 45 18 -0.74 - 91 0 0 22 56 49 1 59 49.3 18 234 -33 22 49 33 23 4 6 22 45 15 23 8 26 -0.74 - 90 0 0 23 20 15 1 59 50.5 17 234 -34 23 12 58 23 27 33 23 8 39 23 31 54 -0.74 - 89 0 0 23 44 0 1 59 51.7 16 235 -35 23 36 42 23 51 19 23 32 22 23 55 40 -0.74 - 88 0 0 24 8 3 1 59 52.9 15 235 -36 24 0 43 24 15 23 23 56 23 24 19 45 -0.74 - 87 0 0 24 32 23 1 59 53.9 14 236 -37 24 25 3 24 39 44 24 20 42 24 44 6 -0.74 - 86 0 0 24 57 0 1 59 54.9 13 236 -38 24 49 38 25 4 22 24 45 17 25 8 45 -0.74 - 85 0 0 25 21 53 1 59 55.8 12 236 -39 25 14 30 25 29 16 25 10 8 25 33 40 -0.74 - 84 0 0 25 47 1 1 59 56.7 11 237 -39 25 39 38 25 54 26 25 35 15 25 58 50 -0.74 - 83 0 0 26 12 24 1 59 57.4 10 237 -40 26 5 0 26 19 50 26 0 36 26 24 14 -0.74 - 82 0 0 26 38 1 1 59 58.1 9 238 -41 26 30 36 26 45 28 26 26 12 26 49 53 -0.74 - 81 0 0 27 3 51 1 59 58.8 8 238 -42 26 56 25 27 11 19 26 52 0 27 15 44 -0.75 - 80 0 0 27 29 54 1 59 59.3 7 239 -43 27 22 27 27 37 22 27 18 1 27 41 49 -0.75 - 79 0 0 27 56 9 1 59 59.8 6 239 -43 27 48 40 28 3 38 27 44 14 28 8 5 -0.75 - 78 0 0 28 22 34 2 0 0.2 5 240 -44 28 15 4 28 30 4 28 10 38 28 34 31 -0.76 - 77 0 0 28 49 9 2 0 0.5 4 240 -45 28 41 39 28 56 40 28 37 12 29 1 8 -0.76 - 76 0 0 29 15 54 2 0 0.8 3 241 -45 29 8 23 29 23 26 29 3 56 29 27 55 -0.78 - 75 0 0 29 42 48 2 0 1.0 2 241 -46 29 35 15 29 50 20 29 30 48 29 54 49 -0.80 - 74 0 0 30 9 49 2 0 1.1 1 242 -47 30 2 16 30 17 22 29 57 47 30 21 52 -0.85 - 73 0 0 30 36 57 2 0 1.1 0 242 -47 30 29 23 30 44 31 30 24 54 30 49 1 -1.28 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 333-125817 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 47 44.7229 DE: -23 32 22.783 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 47 44.7228 DE: -23 32 22.783 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5014) Gorchakov asteroid class: approx. diameter [km]: 20 approx. diameter ["]: 0.010 distance from Earth [AU]: 2.73880 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 date of fit: 2023 Apr 25 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.023", 0.003", 94.015° remarks: * orbital elements for (5014)Gorchakov : Mean anomaly = 355.8848162863 deg Arg. of pericenter = 190.1290292282 deg Long. of node = 104.9717690622 deg Inclination = 2.3599426350 deg Eccentricity = 0.2219449837 Semimajor axis = 3.1780818372 AU Perihelion dist = 2.4727225156 AU Mag: H = 12.40, G = 0.15 Epoch of elements : MJD 60599.08152588 TDT (2024 Oct 16.0815) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr25,0.61,2024,10,16,1.956619,0.025330,0.589581,18.439242,-0.803233,0.005068,-0.000101,-0.000001,0.000000 -147.1233,-23.5492,147.04,-9.02,False UCAC4 333-125817,17.79575640,-23.5396619,12.70,11.80,11.31,0.1,0,,17.82068914,-23.5491921,5.79,5.83,0,0,0 5014,Gorchakov,17.59,20.021,2.7388,0,0,4.306,-2.57,,1.8,0 0,355.6967,2024,10,15,190.1290,104.9718,2.3599,0.22194,3.17808,2.47272,12.39,5.0,0.15 1.297,0.0230,0.0029,94,0.0030,Known errors,0.92,0,-1,-1 20241016_125817,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org