IOTA/IOTA-ES occultation update for (4657) Lopez / TYC 1216-01518-1 event on 2024 Feb 12, 16:58 UT Visible from Summary ------- On 2024 Feb 12 UT, the 16.566 km diameter asteroid (4657) Lopez will occult a 11.2 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.82 mag to 18.05 mag (the magnitude of the asteroid) for at most 0.660 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 Feb 12, 16:54 - 2024 Feb 12, 17:01 * geocentric midpoint of event [JD]: 2460353.20698792 * magnitude of target star: 11.23 * magnitude drop [mag]: 6.82 * estimated maximum duration [s]: 0.660 * Moon: 11 % sunlit, 40° distance * Sun: 78° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.031, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.032", 0.002", 71°) * approx speed of asteroid's shadow [km/s]: 25.0788 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1216-01518-1 by 4657 Lopez on 2024 Feb 12 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 - 93 0 0 21 20 25 16 54 48.6 0 73 48 21 14 17 21 26 34 21 11 30 21 29 22 .... - 92 0 0 21 37 35 16 54 48.7 1 74 49 21 31 26 21 43 45 21 28 38 21 46 34 -0.61 - 91 0 0 21 55 13 16 54 48.9 2 74 49 21 49 3 22 1 23 21 46 14 22 4 12 -0.72 - 90 0 0 22 13 17 16 54 49.1 3 75 49 22 7 6 22 19 29 22 4 17 22 22 18 -0.76 - 89 0 0 22 31 48 16 54 49.5 4 75 49 22 25 36 22 38 1 22 22 47 22 40 51 -0.78 - 88 0 0 22 50 46 16 54 50.0 5 75 50 22 44 33 22 56 59 22 41 43 22 59 50 -0.79 - 87 0 0 23 10 9 16 54 50.5 6 76 50 23 3 55 23 16 24 23 1 5 23 19 14 -0.80 - 86 0 0 23 29 58 16 54 51.2 7 76 50 23 23 43 23 36 14 23 20 52 23 39 5 -0.81 - 85 0 0 23 50 12 16 54 51.9 8 77 50 23 43 56 23 56 29 23 41 5 23 59 20 -0.81 - 84 0 0 24 10 51 16 54 52.8 9 77 50 24 4 33 24 17 8 24 1 42 24 20 0 -0.82 - 83 0 0 24 31 53 16 54 53.7 10 77 50 24 25 35 24 38 12 24 22 43 24 41 5 -0.82 - 82 0 0 24 53 20 16 54 54.7 11 78 50 24 47 1 24 59 40 24 44 8 25 2 33 -0.82 - 81 0 0 25 15 10 16 54 55.9 12 78 50 25 8 50 25 21 31 25 5 57 25 24 25 -0.82 - 80 0 0 25 37 23 16 54 57.1 13 79 50 25 31 2 25 43 45 25 28 8 25 46 39 -0.83 - 79 0 0 25 59 58 16 54 58.4 14 79 49 25 53 36 26 6 22 25 50 42 26 9 16 -0.83 - 78 0 0 26 22 55 16 54 59.8 15 80 49 26 16 32 26 29 20 26 13 37 26 32 15 -0.83 - 77 0 0 26 46 14 16 55 1.3 16 80 49 26 39 49 26 52 39 26 36 54 26 55 35 -0.83 - 76 0 0 27 9 52 16 55 2.9 17 81 49 27 3 27 27 16 19 27 0 31 27 19 15 -0.83 - 75 0 0 27 33 51 16 55 4.6 18 81 49 27 27 24 27 40 19 27 24 28 27 43 15 -0.83 - 74 0 0 27 58 9 16 55 6.3 19 82 48 27 51 41 28 4 38 27 48 45 28 7 35 -0.83 - 73 0 0 28 22 46 16 55 8.2 19 82 48 28 16 17 28 29 16 28 13 20 28 32 14 -0.83 - 72 0 0 28 47 41 16 55 10.1 20 83 48 28 41 11 28 54 12 28 38 13 28 57 10 -0.83 - 71 0 0 29 12 53 16 55 12.1 21 84 47 29 6 22 29 19 25 29 3 24 29 22 24 -0.84 - 70 0 0 29 38 22 16 55 14.2 22 84 47 29 31 50 29 44 55 29 28 51 29 47 54 -0.84 - 69 0 0 30 4 7 16 55 16.4 23 85 46 29 57 33 30 10 41 29 54 34 30 13 41 -0.84 - 68 0 0 30 30 7 16 55 18.7 24 86 46 30 23 32 30 36 42 30 20 33 30 39 42 -0.84 - 67 0 0 30 56 21 16 55 21.0 25 86 45 30 49 45 31 2 57 30 46 45 31 5 58 -0.84 - 66 0 0 31 22 48 16 55 23.5 26 87 45 31 16 12 31 29 26 31 13 11 31 32 27 -0.84 - 65 0 0 31 49 29 16 55 25.9 27 88 44 31 42 51 31 56 7 31 39 50 31 59 9 -0.84 - 64 0 0 32 16 22 16 55 28.5 28 88 44 32 9 43 32 23 1 32 6 42 32 26 3 -0.84 - 63 0 0 32 43 25 16 55 31.1 28 89 43 32 36 46 32 50 6 32 33 44 32 53 8 -0.84 - 62 0 0 33 10 39 16 55 33.8 29 90 43 33 3 59 33 17 21 33 0 56 33 20 24 -0.84 - 61 0 0 33 38 3 16 55 36.6 30 91 42 33 31 21 33 44 45 33 28 18 33 47 48 -0.84 - 60 0 0 34 5 34 16 55 39.4 31 92 41 33 58 52 34 12 18 33 55 49 34 15 22 -0.84 - 59 0 0 34 33 14 16 55 42.3 32 93 41 34 26 30 34 39 58 34 23 27 34 43 2 -0.84 - 58 0 0 35 1 0 16 55 45.3 33 93 40 34 54 16 35 7 45 34 51 12 35 10 50 -0.84 - 57 0 0 35 28 52 16 55 48.3 33 94 39 35 22 7 35 35 38 35 19 3 35 38 43 -0.84 - 56 0 0 35 56 49 16 55 51.3 34 95 39 35 50 3 36 3 36 35 46 59 36 6 41 -0.84 - 55 0 0 36 24 50 16 55 54.4 35 96 38 36 18 3 36 31 37 36 14 58 36 34 43 -0.84 - 54 0 0 36 52 54 16 55 57.6 36 97 37 36 46 6 36 59 42 36 43 1 37 2 48 -0.84 - 53 0 0 37 21 0 16 56 0.8 36 98 37 37 14 12 37 27 49 37 11 6 37 30 55 -0.84 - 52 0 0 37 49 7 16 56 4.0 37 99 36 37 42 18 37 55 57 37 39 13 37 59 3 -0.84 - 51 0 0 38 17 15 16 56 7.3 38 100 35 38 10 25 38 24 5 38 7 19 38 27 12 -0.84 - 50 0 0 38 45 22 16 56 10.6 39 102 34 38 38 32 38 52 12 38 35 25 38 55 20 -0.84 - 49 0 0 39 13 27 16 56 13.9 39 103 34 39 6 36 39 20 18 39 3 30 39 23 26 -0.84 - 48 0 0 39 41 30 16 56 17.3 40 104 33 39 34 39 39 48 22 39 31 32 39 51 29 -0.84 - 47 0 0 40 9 29 16 56 20.7 41 105 32 40 2 38 40 16 21 39 59 31 40 19 29 -0.84 - 46 0 0 40 37 24 16 56 24.1 41 106 31 40 30 33 40 44 17 40 27 25 40 47 25 -0.84 - 45 0 0 41 5 15 16 56 27.6 42 107 30 40 58 22 41 12 7 40 55 15 41 15 16 -0.84 - 44 0 0 41 32 59 16 56 31.0 42 109 30 41 26 6 41 39 52 41 22 59 41 43 0 -0.84 - 43 0 0 42 0 36 16 56 34.5 43 110 29 41 53 43 42 7 29 41 50 35 42 10 38 -0.84 - 42 0 0 42 28 5 16 56 38.0 43 111 28 42 21 12 42 34 59 42 18 4 42 38 7 -0.84 - 41 0 0 42 55 26 16 56 41.5 44 113 27 42 48 33 43 2 20 42 45 25 43 5 28 -0.84 - 40 0 0 43 22 37 16 56 45.0 44 114 27 43 15 44 43 29 31 43 12 36 43 32 40 -0.84 - 39 0 0 43 49 39 16 56 48.6 45 116 26 43 42 46 43 56 33 43 39 38 43 59 42 -0.84 - 38 0 0 44 16 29 16 56 52.1 45 117 25 44 9 36 44 23 23 44 6 28 44 26 32 -0.84 - 37 0 0 44 43 8 16 56 55.6 46 118 24 44 36 15 44 50 2 44 33 7 44 53 11 -0.84 - 36 0 0 45 9 35 16 56 59.1 46 120 23 45 2 42 45 16 29 44 59 34 45 19 37 -0.84 - 35 0 0 45 35 48 16 57 2.7 47 121 23 45 28 55 45 42 42 45 25 47 45 45 51 -0.84 - 34 0 0 46 1 48 16 57 6.2 47 123 22 45 54 55 46 8 42 45 51 48 46 11 50 -0.84 - 33 0 0 46 27 34 16 57 9.7 47 124 21 46 20 41 46 34 27 46 17 33 46 37 35 -0.84 - 32 0 0 46 53 4 16 57 13.2 48 126 20 46 46 12 46 59 57 46 43 5 47 3 6 -0.84 - 31 0 0 47 18 19 16 57 16.6 48 128 20 47 11 27 47 25 12 47 8 20 47 28 20 -0.84 - 30 0 0 47 43 18 16 57 20.1 48 129 19 47 36 27 47 50 11 47 33 20 47 53 19 -0.84 - 29 0 0 48 8 1 16 57 23.6 48 131 18 48 1 10 48 14 53 47 58 3 48 18 0 -0.84 - 28 0 0 48 32 26 16 57 27.0 49 132 17 48 25 36 48 39 18 48 22 29 48 42 25 -0.84 - 27 0 0 48 56 34 16 57 30.4 49 134 16 48 49 44 49 3 25 48 46 37 49 6 32 -0.84 - 26 0 0 49 20 24 16 57 33.8 49 136 16 49 13 34 49 27 14 49 10 28 49 30 21 -0.84 - 25 0 0 49 43 56 16 57 37.2 49 137 15 49 37 7 49 50 45 49 34 1 49 53 52 -0.84 - 24 0 0 50 7 8 16 57 40.5 49 139 14 50 0 20 50 13 57 49 57 14 50 17 4 -0.84 - 23 0 0 50 30 2 16 57 43.8 50 141 14 50 23 14 50 36 50 50 20 9 50 39 57 -0.84 - 22 0 0 50 52 36 16 57 47.1 50 142 13 50 45 49 50 59 24 50 42 44 51 2 30 -0.84 - 21 0 0 51 14 51 16 57 50.4 50 144 12 51 8 5 51 21 38 51 5 0 51 24 43 -0.84 - 20 0 0 51 36 45 16 57 53.6 50 146 11 51 30 0 51 43 31 51 26 56 51 46 37 -0.84 - 19 0 0 51 58 20 16 57 56.8 50 147 11 51 51 35 52 5 5 51 48 31 52 8 10 -0.84 - 18 0 0 52 19 34 16 58 0.0 50 149 10 52 12 50 52 26 18 52 9 47 52 29 22 -0.84 - 17 0 0 52 40 27 16 58 3.2 50 151 9 52 33 44 52 47 10 52 30 41 52 50 14 -0.84 - 16 0 0 53 0 59 16 58 6.3 50 152 9 52 54 18 53 7 42 52 51 15 53 10 46 -0.84 - 15 0 0 53 21 11 16 58 9.4 50 154 8 53 14 30 53 27 53 53 11 28 53 30 56 -0.84 - 14 0 0 53 41 2 16 58 12.4 50 155 7 53 34 22 53 47 42 53 31 20 53 50 45 -0.84 - 13 0 0 54 0 31 16 58 15.4 50 157 6 53 53 52 54 7 11 53 50 51 54 10 13 -0.84 - 12 0 0 54 19 39 16 58 18.4 50 159 6 54 13 1 54 26 18 54 10 0 54 29 20 -0.84 - 11 0 0 54 38 26 16 58 21.4 50 160 5 54 31 49 54 45 4 54 28 49 54 48 5 -0.84 - 10 0 0 54 56 52 16 58 24.3 49 162 4 54 50 16 55 3 29 54 47 16 55 6 29 -0.84 - 9 0 0 55 14 56 16 58 27.2 49 163 4 55 8 22 55 21 32 55 5 22 55 24 32 -0.84 - 8 0 0 55 32 40 16 58 30.0 49 165 3 55 26 6 55 39 14 55 23 7 55 42 14 -0.84 - 7 0 0 55 50 1 16 58 32.8 49 167 3 55 43 29 55 56 35 55 40 30 55 59 34 -0.84 - 6 0 0 56 7 2 16 58 35.6 49 168 2 56 0 30 56 13 34 55 57 32 56 16 33 -0.84 - 5 0 0 56 23 41 16 58 38.4 49 170 1 56 17 11 56 30 13 56 14 13 56 33 11 -0.84 - 4 0 0 56 40 0 16 58 41.1 49 171 1 56 33 30 56 46 30 56 30 33 56 49 27 -0.84 - 3 0 0 56 55 57 16 58 43.8 48 173 0 56 49 29 57 2 26 56 46 32 57 5 23 -0.84 - 2 0 0 57 11 33 16 58 46.4 48 174 -1 57 5 6 57 18 1 57 2 10 57 20 58 -0.84 - 1 0 0 57 26 49 16 58 49.0 48 176 -1 57 20 23 57 33 15 57 17 27 57 36 12 -0.84 0 0 0 57 41 43 16 58 51.6 48 177 -2 57 35 19 57 48 9 57 32 24 57 51 5 -0.84 1 0 0 57 56 17 16 58 54.1 48 179 -2 57 49 54 58 2 42 57 46 59 58 5 37 -0.84 2 0 0 58 10 31 16 58 56.6 47 180 -3 58 4 8 58 16 54 58 1 14 58 19 49 -0.84 3 0 0 58 24 24 16 58 59.1 47 182 -4 58 18 3 58 30 46 58 15 9 58 33 40 -0.84 4 0 0 58 37 57 16 59 1.5 47 183 -4 58 31 37 58 44 18 58 28 44 58 47 12 -0.84 5 0 0 58 51 10 16 59 3.9 47 184 -5 58 44 50 58 57 29 58 41 58 59 0 23 -0.84 6 0 0 59 4 2 16 59 6.3 46 186 -5 58 57 44 59 10 21 58 54 52 59 13 14 -0.84 7 0 0 59 16 35 16 59 8.7 46 187 -6 59 10 18 59 22 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63 34 23 17 0 37.0 28 247 -30 63 28 33 63 40 14 63 25 53 63 42 55 -0.85 60 0 0 63 32 32 17 0 38.2 28 248 -30 63 26 41 63 38 23 63 24 2 63 41 3 -0.85 61 0 0 63 30 26 17 0 39.4 27 249 -30 63 24 35 63 36 17 63 21 55 63 38 58 -0.85 62 0 0 63 28 4 17 0 40.6 27 250 -31 63 22 13 63 33 56 63 19 33 63 36 37 -0.85 63 0 0 63 25 28 17 0 41.8 26 251 -31 63 19 36 63 31 20 63 16 56 63 34 1 -0.85 64 0 0 63 22 37 17 0 42.9 26 252 -32 63 16 45 63 28 30 63 14 5 63 31 10 -0.85 65 0 0 63 19 31 17 0 44.1 26 253 -32 63 13 38 63 25 24 63 10 58 63 28 4 -0.85 66 0 0 63 16 9 17 0 45.2 25 254 -32 63 10 16 63 22 2 63 7 36 63 24 43 -0.85 67 0 0 63 12 32 17 0 46.3 25 255 -33 63 6 39 63 18 26 63 3 58 63 21 7 -0.85 68 0 0 63 8 40 17 0 47.5 24 256 -33 63 2 46 63 14 34 63 0 5 63 17 16 -0.85 69 0 0 63 4 33 17 0 48.5 24 257 -33 62 58 38 63 10 28 62 55 57 63 13 9 -0.85 70 0 0 63 0 10 17 0 49.6 23 258 -34 62 54 15 63 6 5 62 51 34 63 8 47 -0.85 71 0 0 62 55 31 17 0 50.7 23 259 -34 62 49 36 63 1 27 62 46 54 63 4 9 -0.85 72 0 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0 61 22 16 17 1 4.0 17 272 -39 61 16 11 61 28 23 61 13 24 61 31 10 -0.86 86 0 0 61 13 31 17 1 4.8 16 273 -40 61 7 24 61 19 38 61 4 37 61 22 25 -0.86 87 0 0 61 4 27 17 1 5.6 16 274 -40 60 58 20 61 10 35 60 55 33 61 13 23 -0.86 88 0 0 60 55 6 17 1 6.4 15 275 -41 60 48 58 61 1 15 60 46 10 61 4 4 -0.86 89 0 0 60 45 27 17 1 7.2 15 276 -41 60 39 18 60 51 37 60 36 30 60 54 26 -0.86 90 0 0 60 35 30 17 1 7.9 14 277 -41 60 29 20 60 41 42 60 26 32 60 44 31 -0.87 91 0 0 60 25 15 17 1 8.6 14 278 -42 60 19 4 60 31 27 60 16 15 60 34 17 -0.87 92 0 0 60 14 42 17 1 9.3 13 278 -42 60 8 30 60 20 55 60 5 40 60 23 45 -0.87 93 0 0 60 3 50 17 1 10.0 13 279 -42 59 57 37 60 10 4 59 54 47 60 12 55 -0.87 94 0 0 59 52 40 17 1 10.7 12 280 -43 59 46 25 59 58 55 59 43 35 60 1 46 -0.87 95 0 0 59 41 10 17 1 11.3 11 281 -43 59 34 55 59 47 27 59 32 4 59 50 18 -0.87 96 0 0 59 29 22 17 1 12.0 11 282 -43 59 23 6 59 35 40 59 20 14 59 38 32 -0.88 97 0 0 59 17 15 17 1 12.5 10 283 -44 59 10 58 59 23 34 59 8 6 59 26 26 -0.88 98 0 0 59 4 49 17 1 13.1 10 284 -44 58 58 30 59 11 8 58 55 38 59 14 1 -0.88 99 0 0 58 52 3 17 1 13.7 9 285 -44 58 45 43 58 58 24 58 42 51 59 1 17 -0.88 100 0 0 58 38 58 17 1 14.2 9 285 -45 58 32 37 58 45 20 58 29 44 58 48 14 -0.89 101 0 0 58 25 33 17 1 14.7 8 286 -45 58 19 11 58 31 56 58 16 18 58 34 51 -0.89 102 0 0 58 11 49 17 1 15.1 8 287 -45 58 5 26 58 18 13 58 2 32 58 21 8 -0.90 103 0 0 57 57 45 17 1 15.6 7 288 -46 57 51 20 58 4 10 57 48 26 58 7 5 -0.90 104 0 0 57 43 21 17 1 16.0 6 289 -46 57 36 55 57 49 47 57 34 0 57 52 43 -0.91 105 0 0 57 28 36 17 1 16.3 6 290 -46 57 22 10 57 35 3 57 19 14 57 38 0 -0.91 106 0 0 57 13 32 17 1 16.7 5 291 -46 57 7 5 57 20 0 57 4 8 57 22 57 -0.92 107 0 0 56 58 8 17 1 17.0 5 291 -47 56 51 39 57 4 37 56 48 42 57 7 34 -0.93 108 0 0 56 42 23 17 1 17.2 4 292 -47 56 35 53 56 48 53 56 32 56 56 51 51 -0.95 109 0 0 56 26 17 17 1 17.5 3 293 -47 56 19 47 56 32 49 56 16 49 56 35 47 -0.97 110 0 0 56 9 52 17 1 17.7 3 294 -48 56 3 20 56 16 24 56 0 22 56 19 23 -1.00 111 0 0 55 53 6 17 1 17.8 2 295 -48 55 46 33 55 59 39 55 43 34 56 2 39 -1.05 112 0 0 55 35 59 17 1 18.0 2 296 -48 55 29 25 55 42 34 55 26 26 55 45 34 -1.13 113 0 0 55 18 32 17 1 18.0 1 296 -48 55 11 57 55 25 8 55 8 58 55 28 8 -1.35 114 0 0 55 0 45 17 1 18.1 0 297 -48 54 54 9 55 7 22 54 51 9 55 10 22 -2.73 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: TYC 1216-01518-1 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 02 34 12.2282 DE: +15 23 02.498 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 02 34 12.2280 DE: +15 23 02.497 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.2 * B mag [mag]: 11.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4657) Lopez asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.59860 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#44 date of fit: 2023 Feb 10 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): 0.032", 0.002", 71.462° remarks: * orbital elements for (4657)Lopez : Mean anomaly = 18.2283306061 deg Arg. of pericenter = 38.5457368116 deg Long. of node = 357.9727455805 deg Inclination = 0.2787974653 deg Eccentricity = 0.1824366045 Semimajor axis = 3.1039093882 AU Perihelion dist = 2.5376426989 AU Mag: H = 12.86, G = 0.15 Epoch of elements : MJD 60352.70698696 TDT (2024 Feb 12.7070) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#442023Feb10,0.66,2024,2,12,16.967710,-0.196870,0.610188,13.468987,4.353813,0.005447,0.001781,0.000000,0.000000 2.1190,15.4897,-70.96,-13.70,False TYC 1216-01518-1,2.57006342,15.3840274,11.64,11.23,11.01,0.0,0,,2.59202341,15.4896597,6.83,6.60,0,0,0 4657,Lopez,18.05,16.566,2.5986,0,0,3.153,14.73,,1.2,0 0,18.1009,2024,2,12,38.5457,357.9727,0.2788,0.18244,3.10391,2.53764,12.86,5.0,0.15 1.228,0.0323,0.0020,71,0.0020,Known errors,0.88,0,-1,-1 20240212_1518-1,60138.17 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 04:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org