IOTA/IOTA-ES occultation update for (2) Pallas / UCAC4 417-022180 event on 2023 Mar 24, 01:38 UT Visible from USA, Canada Summary ------- On 2023 Mar 24 UT, the 532 km diameter asteroid (2) Pallas will occult a 12.3 mag star in the constellation Monoceros for observers along a path across USA, Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.02 mag to 8.14 mag (the magnitude of the asteroid) for at most 23.090 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: 100 * date and approx. time of event: 2023 Mar 24, 01:34 - 2023 Mar 24, 01:42 * geocentric midpoint of event [JD]: 2460027.56855466 * magnitude of target star: 12.30 * magnitude drop [mag]: 0.02 * estimated maximum duration [s]: 23.090 * Moon: 7 % sunlit, 74° distance * Sun: 101° distance * rough path description: USA, Canada Additional comments ------------------- very low mag drop, twilight The occultation path -------------------- * approximate projected width [km]: 647 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.040, +/- 0.015) * 1 sigma uncertainty ellipse (major, minor, PA): (0.040", 0.015", 83°) * approx speed of asteroid's shadow [km/s]: 23.0404 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 417-022180 by 2 Pallas on 2023 Mar 24 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 167 0 0 .. .. .... .. .. .. .. .. .. -18 43 14 .. .. .. -19 6 51 .. .. .. .... 168 0 0 -15 56 30 1 34 55.8 1 97 70 -18 49 40 -12 57 1 -19 13 14 -12 31 33 .... 169 0 0 -16 2 15 1 34 55.9 2 96 70 -18 55 10 -13 3 2 -19 18 43 -12 37 37 -0.49 170 0 0 -16 7 2 1 34 56.2 3 96 69 -18 59 45 -13 8 2 -19 23 16 -12 42 39 -0.56 171 0 0 -16 10 51 1 34 56.5 4 96 68 -19 3 25 -13 12 2 -19 26 55 -12 46 40 -0.60 172 0 0 -16 13 43 1 34 56.9 5 96 68 -19 6 11 -13 15 0 -19 29 40 -12 49 40 -0.62 173 0 0 -16 15 37 1 34 57.4 6 95 67 -19 8 1 -13 16 59 -19 31 29 -12 51 38 -0.63 174 0 0 -16 16 34 1 34 58.0 7 95 66 -19 8 56 -13 17 56 -19 32 25 -12 52 36 -0.64 175 0 0 -16 16 33 1 34 58.7 8 95 66 -19 8 57 -13 17 53 -19 32 26 -12 52 32 -0.65 176 0 0 -16 15 34 1 34 59.5 9 95 65 -19 8 3 -13 16 49 -19 31 32 -12 51 27 -0.66 177 0 0 -16 13 37 1 35 0.4 10 94 64 -19 6 14 -13 14 44 -19 29 44 -12 49 21 -0.66 178 0 0 -16 10 43 1 35 1.4 10 94 64 -19 3 29 -13 11 38 -19 27 1 -12 46 14 -0.67 179 0 0 -16 6 50 1 35 2.5 11 94 63 -18 59 50 -13 7 31 -19 23 23 -12 42 4 -0.67 -180 0 0 -16 1 59 1 35 3.7 12 94 62 -18 55 15 -13 2 22 -19 18 50 -12 36 53 -0.67 -179 0 0 -15 56 10 1 35 4.9 13 93 61 -18 49 44 -12 56 11 -19 13 21 -12 30 39 -0.67 -178 0 0 -15 49 21 1 35 6.3 14 93 61 -18 43 16 -12 48 59 -19 6 57 -12 23 23 -0.68 -177 0 0 -15 41 33 1 35 7.8 15 93 60 -18 35 53 -12 40 43 -18 59 37 -12 15 3 -0.68 -176 0 0 -15 32 45 1 35 9.3 16 93 59 -18 27 32 -12 31 24 -18 51 20 -12 5 40 -0.68 -175 0 0 -15 22 57 1 35 11.0 17 92 58 -18 18 15 -12 21 2 -18 42 6 -11 55 12 -0.68 -174 0 0 -15 12 8 1 35 12.8 18 92 58 -18 7 59 -12 9 35 -18 31 55 -11 43 40 -0.68 -173 0 0 -15 0 17 1 35 14.6 19 92 57 -17 56 45 -11 57 4 -18 20 45 -11 31 2 -0.68 -172 0 0 -14 47 25 1 35 16.6 20 92 56 -17 44 32 -11 43 27 -18 8 38 -11 17 19 -0.69 -171 0 0 -14 33 30 1 35 18.7 21 92 55 -17 31 20 -11 28 43 -17 55 31 -11 2 28 -0.69 -170 0 0 -14 18 31 1 35 20.9 22 92 55 -17 17 7 -11 12 52 -17 41 24 -10 46 30 -0.69 -169 0 0 -14 2 28 1 35 23.1 23 91 54 -17 1 54 -10 55 54 -17 26 17 -10 29 23 -0.69 -168 0 0 -13 45 20 1 35 25.5 24 91 53 -16 45 39 -10 37 46 -17 10 9 -10 11 6 -0.69 -167 0 0 -13 27 6 1 35 28.0 25 91 52 -16 28 21 -10 18 29 -16 52 59 - 9 51 39 -0.69 -166 0 0 -13 7 45 1 35 30.6 26 91 51 -16 10 0 - 9 58 0 -16 34 46 - 9 31 0 -0.69 -165 0 0 -12 47 16 1 35 33.4 27 91 50 -15 50 35 - 9 36 19 -16 15 29 - 9 9 9 -0.69 -164 0 0 -12 25 39 1 35 36.2 28 91 50 -15 30 4 - 9 13 26 -15 55 7 - 8 46 4 -0.69 -163 0 0 -12 2 51 1 35 39.2 29 91 49 -15 8 28 - 8 49 17 -15 33 40 - 8 21 43 -0.69 -162 0 0 -11 38 52 1 35 42.2 30 91 48 -14 45 44 - 8 23 53 -15 11 6 - 7 56 6 -0.69 -161 0 0 -11 13 41 1 35 45.4 31 91 47 -14 21 52 - 7 57 12 -14 47 24 - 7 29 12 -0.69 -160 0 0 -10 47 16 1 35 48.8 32 91 46 -13 56 50 - 7 29 12 -14 22 33 - 7 0 58 -0.69 -159 0 0 -10 19 36 1 35 52.2 33 91 45 -13 30 38 - 6 59 53 -13 56 32 - 6 31 23 -0.70 -158 0 0 - 9 50 40 1 35 55.8 34 92 44 -13 3 14 - 6 29 11 -13 29 20 - 6 0 26 -0.70 -157 0 0 - 9 20 26 1 35 59.5 35 92 44 -12 34 36 - 5 57 7 -13 0 54 - 5 28 4 -0.70 -156 0 0 - 8 48 52 1 36 3.3 36 92 43 -12 4 44 - 5 23 37 -12 31 15 - 4 54 17 -0.70 -155 0 0 - 8 15 58 1 36 7.3 37 92 42 -11 33 36 - 4 48 41 -12 0 21 - 4 19 3 -0.70 -154 0 0 - 7 41 42 1 36 11.4 38 93 41 -11 1 10 - 4 12 16 -11 28 10 - 3 42 18 -0.70 -153 0 0 - 7 6 1 1 36 15.7 39 93 40 -10 27 26 - 3 34 21 -10 54 40 - 3 4 3 -0.70 -152 0 0 - 6 28 54 1 36 20.1 40 93 39 - 9 52 21 - 2 54 53 -10 19 51 - 2 24 14 -0.70 -151 0 0 - 5 50 20 1 36 24.6 41 94 38 - 9 15 54 - 2 13 51 - 9 43 40 - 1 42 49 -0.70 -150 0 0 - 5 10 17 1 36 29.3 42 94 37 - 8 38 3 - 1 31 13 - 9 6 6 - 0 59 47 -0.70 -149 0 0 - 4 28 42 1 36 34.2 43 95 36 - 7 58 47 - 0 46 56 - 8 27 8 - 0 15 5 -0.70 -148 0 0 - 3 45 35 1 36 39.2 44 96 35 - 7 18 4 - 0 0 58 - 7 46 44 0 31 20 -0.70 -147 0 0 - 3 0 52 1 36 44.3 44 96 34 - 6 35 53 0 46 44 - 7 4 52 1 19 28 -0.70 -146 0 0 - 2 14 32 1 36 49.6 45 97 33 - 5 52 11 1 36 10 - 6 21 30 2 9 24 -0.70 -145 0 0 - 1 26 34 1 36 55.1 46 98 32 - 5 6 57 2 27 25 - 5 36 37 3 1 9 -0.70 -144 0 0 - 0 36 54 1 37 0.7 47 99 31 - 4 20 10 3 20 30 - 4 50 12 3 54 46 -0.70 -143 0 0 0 14 28 1 37 6.5 48 100 30 - 3 31 47 4 15 28 - 4 2 11 4 50 18 -0.70 -142 0 0 1 7 36 1 37 12.4 49 102 29 - 2 41 47 5 12 21 - 3 12 35 5 47 46 -0.70 -141 0 0 2 2 30 1 37 18.5 50 103 28 - 1 50 7 6 11 12 - 2 21 20 6 47 14 -0.70 -140 0 0 2 59 13 1 37 24.8 50 104 27 - 0 56 48 7 12 3 - 1 28 26 7 48 45 -0.70 -139 0 0 3 57 47 1 37 31.2 51 106 26 - 0 1 46 8 14 57 - 0 33 50 8 52 20 -0.70 -138 0 0 4 58 13 1 37 37.8 52 107 25 0 55 0 9 19 56 0 22 28 9 58 3 -0.70 -137 0 0 6 0 34 1 37 44.6 53 109 24 1 53 31 10 27 3 1 20 30 11 5 55 -0.70 -136 0 0 7 4 51 1 37 51.5 53 111 23 2 53 48 11 36 20 2 20 17 12 16 1 -0.70 -135 0 0 8 11 5 1 37 58.6 54 113 22 3 55 53 12 47 50 3 21 52 13 28 21 -0.70 -134 0 0 9 19 19 1 38 5.8 54 115 21 4 59 47 14 1 34 4 25 13 14 42 59 -0.70 -133 0 0 10 29 32 1 38 13.2 55 118 20 6 5 30 15 17 35 5 30 24 15 59 57 -0.70 -132 0 0 11 41 47 1 38 20.7 55 120 19 7 13 4 16 35 54 6 37 23 17 19 16 -0.70 -131 0 0 12 56 4 1 38 28.4 55 122 18 8 22 29 17 56 34 7 46 12 18 41 0 -0.69 -130 0 0 14 12 24 1 38 36.2 55 125 17 9 33 45 19 19 35 8 56 51 20 5 9 -0.69 -129 0 0 15 30 46 1 38 44.1 55 128 16 10 46 51 20 45 0 10 9 19 21 31 45 -0.69 -128 0 0 16 51 10 1 38 52.1 55 130 15 12 1 48 22 12 49 11 23 37 23 0 49 -0.69 -127 0 0 18 13 36 1 39 0.2 55 133 14 13 18 34 23 43 2 12 39 42 24 32 23 -0.69 -126 0 0 19 38 3 1 39 8.4 55 136 13 14 37 8 25 15 39 13 57 35 26 6 26 -0.69 -125 0 0 21 4 28 1 39 16.7 54 138 11 15 57 29 26 50 41 15 17 12 27 42 59 -0.69 -124 0 0 22 32 50 1 39 25.1 54 141 10 17 19 33 28 28 6 16 38 32 29 22 1 -0.69 -123 0 0 24 3 6 1 39 33.5 53 144 9 18 43 19 30 7 52 18 1 32 31 3 31 -0.69 -122 0 0 25 35 11 1 39 41.9 52 146 8 20 8 42 31 49 58 19 26 9 32 47 27 -0.69 -121 0 0 27 9 2 1 39 50.3 52 149 7 21 35 38 33 34 20 20 52 18 34 33 47 -0.69 -120 0 0 28 44 33 1 39 58.7 51 151 6 23 4 3 35 20 55 22 19 54 36 22 28 -0.69 -119 0 0 30 21 39 1 40 7.0 50 154 5 24 33 50 37 9 36 23 48 51 38 13 26 -0.69 -118 0 0 32 0 10 1 40 15.3 49 156 5 26 4 54 39 0 20 25 19 5 40 6 35 -0.69 -117 0 0 33 40 0 1 40 23.5 47 158 4 27 37 6 40 52 57 26 50 27 42 1 49 -0.69 -116 0 0 35 20 59 1 40 31.5 46 160 3 29 10 20 42 47 21 28 22 49 43 59 1 -0.69 -115 0 0 37 2 57 1 40 39.4 45 162 2 30 44 25 44 43 20 29 56 3 45 58 2 -0.69 -114 0 0 38 45 41 1 40 47.2 43 164 1 32 19 13 46 40 44 31 30 0 47 58 41 -0.69 -113 0 0 40 29 1 1 40 54.7 42 166 0 33 54 33 48 39 19 33 4 29 50 0 47 -0.69 -112 0 0 42 12 40 1 41 2.0 40 168 0 35 30 13 50 38 49 34 39 19 52 4 6 -0.69 -111 0 0 43 56 25 1 41 9.1 39 169 -1 37 6 3 52 38 58 36 14 18 54 8 20 -0.69 -110 0 0 45 40 0 1 41 15.9 37 171 -2 38 41 48 54 39 26 37 49 16 56 13 12 -0.70 -109 0 0 47 23 7 1 41 22.3 36 172 -2 40 17 17 56 39 49 39 23 58 58 18 20 -0.70 -108 0 0 49 5 30 1 41 28.5 34 174 -3 41 52 15 58 39 43 40 58 12 60 23 18 -0.70 -107 0 0 50 46 49 1 41 34.4 32 175 -3 43 26 30 60 38 39 42 31 44 62 27 37 -0.70 -106 0 0 52 26 46 1 41 39.9 31 176 -4 44 59 47 62 36 5 44 4 22 64 30 44 -0.70 -105 0 0 54 5 3 1 41 45.0 29 177 -4 46 31 53 64 31 25 45 35 52 66 31 59 -0.70 -104 0 0 55 41 21 1 41 49.8 28 179 -5 48 2 34 66 24 1 47 6 2 68 30 39 -0.70 -103 0 0 57 15 22 1 41 54.2 26 180 -5 49 31 39 68 13 13 48 34 38 70 25 52 -0.70 -102 0 0 58 46 49 1 41 58.3 25 181 -5 50 58 53 69 58 17 50 1 29 72 16 42 -0.70 -101 0 0 60 15 27 1 42 2.0 23 182 -5 52 24 7 71 38 30 51 26 25 74 2 10 -0.70 -100 0 0 61 41 1 1 42 5.4 22 183 -5 53 47 10 73 13 12 52 49 14 75 41 17 -0.70 - 99 0 0 63 3 19 1 42 8.4 20 184 -6 55 7 52 74 41 47 54 9 47 77 13 6 -0.70 - 98 0 0 64 22 12 1 42 11.1 19 185 -6 56 26 5 76 3 49 55 27 58 78 36 53 -0.71 - 97 0 0 65 37 31 1 42 13.6 18 186 -6 57 41 44 77 18 59 56 43 39 79 52 10 -0.71 - 96 0 0 66 49 14 1 42 15.8 16 187 -6 58 54 42 78 27 13 57 56 45 80 58 52 -0.71 - 95 0 0 67 57 16 1 42 17.7 15 188 -6 60 4 56 79 28 38 59 7 12 81 57 14 -0.71 - 94 0 0 69 1 38 1 42 19.4 14 189 -6 61 12 24 80 23 31 60 14 58 82 47 49 -0.71 - 93 0 0 70 2 22 1 42 20.8 13 190 -6 62 17 4 81 12 18 61 20 1 .. .. .. -0.71 - 92 0 0 70 59 33 1 42 22.1 12 191 -6 63 18 57 81 55 32 62 22 22 .. .. .. -0.71 - 91 0 0 71 53 17 1 42 23.2 11 192 -6 64 18 4 82 33 45 63 22 0 .. .. .. -0.71 - 90 0 0 72 43 41 1 42 24.2 10 193 -6 65 14 28 83 7 31 64 18 59 .. .. .. -0.71 - 89 0 0 73 30 54 1 42 25.0 9 194 -6 66 8 11 .. .. .. 65 13 21 .. .. .. -0.71 - 88 0 0 74 15 5 1 42 25.8 9 195 -6 66 59 18 .. .. .. 66 5 9 .. .. .. -0.71 - 87 0 0 74 56 23 1 42 26.4 8 196 -6 67 47 54 .. .. .. 66 54 29 .. .. .. -0.71 - 86 0 0 75 35 0 1 42 26.9 7 197 -6 68 34 4 .. .. .. 67 41 25 .. .. .. -0.71 - 85 0 0 76 11 4 1 42 27.4 6 198 -5 69 17 53 .. .. .. 68 26 2 .. .. .. -0.71 - 84 0 0 76 44 46 1 42 27.7 6 199 -5 69 59 27 .. .. .. 69 8 25 .. .. .. -0.71 - 83 0 0 77 16 15 1 42 28.1 5 200 -5 70 38 53 .. .. .. 69 48 40 .. .. .. -0.71 - 82 0 0 77 45 41 1 42 28.3 5 201 -5 71 16 15 .. .. .. 70 26 53 .. .. .. -0.71 - 81 0 0 78 13 12 1 42 28.6 4 202 -5 71 51 41 .. .. .. 71 3 9 .. .. .. -0.71 - 80 0 0 78 38 57 1 42 28.8 4 203 -5 72 25 16 .. .. .. 71 37 34 .. .. .. -0.71 - 79 0 0 79 3 3 1 42 28.9 3 204 -5 72 57 6 .. .. .. 72 10 14 .. .. .. -0.71 - 78 0 0 79 25 38 1 42 29.1 3 205 -5 73 27 16 .. .. .. 72 41 15 .. .. .. -0.70 - 77 0 0 79 46 48 1 42 29.2 3 206 -5 73 55 53 .. .. .. 73 10 41 .. .. .. -0.70 - 76 0 0 80 6 40 1 42 29.3 2 207 -5 74 23 0 .. .. .. 73 38 37 .. .. .. -0.70 - 75 0 0 80 25 18 1 42 29.3 2 208 -5 74 48 44 .. .. .. 74 5 8 .. .. .. -0.70 - 74 0 0 80 42 50 1 42 29.4 1 209 -5 75 13 9 .. .. .. 74 30 20 .. .. .. -0.69 - 73 0 0 80 59 19 1 42 29.4 1 210 -5 75 36 20 .. .. .. 74 54 17 .. .. .. -0.69 - 72 0 0 81 14 51 1 42 29.5 1 211 -5 75 58 20 .. .. .. 75 17 2 .. .. .. -0.68 - 71 0 0 81 29 29 1 42 29.5 1 212 -5 76 19 14 .. .. .. 75 38 39 .. .. .. -0.66 - 70 0 0 81 43 17 1 42 29.5 0 213 -5 76 39 6 .. .. .. 75 59 14 .. .. .. -0.61 - 69 0 0 81 56 18 1 42 29.5 0 214 -4 76 57 59 .. .. .. 76 18 48 .. .. .. 0.35 - 68 0 0 .. .. .... .. .. .. .. .. .. 77 15 57 .. .. .. 76 37 26 .. .. .. .... - 67 0 0 .. .. .... .. .. .. .. .. .. 77 33 2 .. .. .. 76 55 10 .. .. .. .... - 66 0 0 .. .. .... .. .. .. .. .. .. 77 49 18 .. .. .. 77 12 3 .. .. .. .... - 65 0 0 .. .. .... .. .. .. .. .. .. 78 4 47 .. .. .. 77 28 9 .. .. .. .... - 64 0 0 .. .. .... .. .. .. .. .. .. 78 19 32 .. .. .. 77 43 30 .. .. .. .... - 63 0 0 .. .. .... .. .. .. .. .. .. 78 33 36 .. .. .. 77 58 8 .. .. .. .... - 62 0 0 .. .. .... .. .. .. .. .. .. 78 47 1 .. .. .. 78 12 5 .. .. .. .... - 61 0 0 .. .. .... .. .. .. .. .. .. 78 59 48 .. .. .. 78 25 24 .. .. .. .... - 60 0 0 .. .. .... .. .. .. .. .. .. 79 12 0 .. .. .. 78 38 7 .. .. .. .... - 59 0 0 .. .. .... .. .. .. .. .. .. 79 23 39 .. .. .. 78 50 16 .. .. .. .... - 58 0 0 .. .. .... .. .. .. .. .. .. 79 34 46 .. .. .. 79 1 52 .. .. .. .... - 57 0 0 .. .. .... .. .. .. .. .. .. 79 45 24 .. .. .. 79 12 57 .. .. .. .... - 56 0 0 .. .. .... .. .. .. .. .. .. 79 55 33 .. .. .. 79 23 32 .. .. .. .... - 55 0 0 .. .. .... .. .. .. .. .. .. 80 5 14 .. .. .. 79 33 40 .. .. .. .... - 54 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 79 43 20 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 417-022180 * constellation : Monoceros * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 54 55.5017 DE: -06 41 23.595 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 54 55.5016 DE: -06 41 23.595 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2) Pallas asteroid class: ShapeModel approx. diameter [km]: 532 approx. diameter ["]: 0.430 distance from Earth [AU]: 1.70410 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 date of fit: 2023 Feb 07 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): 0.040", 0.015", 83.191° remarks: * orbital elements for (2)Pallas : Mean anomaly = 3.6362642188 deg Arg. of pericenter = 310.8663315149 deg Long. of node = 172.9183901452 deg Inclination = 34.9268963851 deg Eccentricity = 0.2301117065 Semimajor axis = 2.7697303868 AU Perihelion dist = 2.1323830009 AU Mag: H = 4.12, G = 0.11 Epoch of elements : MJD 60027.06854167 TDT (2023 Mar 24.0685) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Feb07,23.09,2023,3,24,1.645312,-0.440501,0.361675,8.253013,10.050275,0.005376,-0.000005,0.000000,-0.000001 -101.9465,-6.7213,156.94,1.26,False UCAC4 417-022180,6.91541717,-6.6898876,0.00,12.30,0.00,0.0,0,,6.93417479,-6.7213037,0.02,0.00,0,0,0 2,Pallas,8.14,532.0,1.7041,0,0,2.860,51.86,,28.2,0 0,3.4078,2023,3,23,310.8663,172.9184,34.9269,0.23011,2.76973,2.13238,4.12,5.0,0.15 1.069,0.0403,0.0147,83,0.0298,Known errors,-1.00,-1,-1,-1 20230324_022180,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:52 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org