IOTA/IOTA-ES occultation update for (7) Iris / TYC 6142-00924-1 event on 2022 Dec 30, 21:03 UT Visible from Australia Summary ------- On 2022 Dec 30 UT, the 222.3 km diameter asteroid (7) Iris will occult a 10.4 mag star in the constellation Virgo for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.33 mag to 11.32 mag (the magnitude of the asteroid) for at most 7.860 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: 2022 Dec 30, 21:00 - 2022 Dec 30, 21:07 * geocentric midpoint of event [JD]: 2459944.37749062 * magnitude of target star: 10.37 * magnitude drop [mag]: 1.33 * estimated maximum duration [s]: 7.860 * Moon: 58 % sunlit, 161° distance * Sun: 63° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 248 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.009", 103°) * approx speed of asteroid's shadow [km/s]: 28.2695 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6142-00924-1 by 7 Iris on 2022 Dec 30 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 68 0 0 - 4 48 42 21 0 12.8 1 108 -55 - 6 0 6 - 3 38 4 - 6 13 2 - 3 25 26 .... 69 0 0 - 5 8 53 21 0 12.9 2 108 -54 - 6 20 29 - 3 58 4 - 6 33 26 - 3 45 25 0.43 70 0 0 - 5 29 34 21 0 13.1 3 108 -53 - 6 41 21 - 4 18 34 - 6 54 21 - 4 5 53 0.45 71 0 0 - 5 50 45 21 0 13.4 4 108 -52 - 7 2 44 - 4 39 33 - 7 15 46 - 4 26 50 0.47 72 0 0 - 6 12 26 21 0 13.8 5 107 -51 - 7 24 36 - 5 1 2 - 7 37 40 - 4 48 17 0.47 73 0 0 - 6 34 35 21 0 14.3 6 107 -50 - 7 46 58 - 5 23 0 - 8 0 4 - 5 10 13 0.48 74 0 0 - 6 57 14 21 0 14.8 7 107 -49 - 8 9 49 - 5 45 27 - 8 22 57 - 5 32 37 0.48 75 0 0 - 7 20 21 21 0 15.5 8 107 -48 - 8 33 8 - 6 8 22 - 8 46 19 - 5 55 30 0.48 76 0 0 - 7 43 56 21 0 16.2 9 107 -47 - 8 56 56 - 6 31 45 - 9 10 9 - 6 18 51 0.49 77 0 0 - 8 7 59 21 0 17.0 11 107 -46 - 9 21 12 - 6 55 36 - 9 34 27 - 6 42 40 0.49 78 0 0 - 8 32 29 21 0 17.9 12 107 -45 - 9 45 55 - 7 19 54 - 9 59 12 - 7 6 56 0.49 79 0 0 - 8 57 27 21 0 18.9 13 106 -44 -10 11 5 - 7 44 39 -10 24 25 - 7 31 39 0.49 80 0 0 - 9 22 51 21 0 20.0 14 106 -43 -10 36 42 - 8 9 51 -10 50 4 - 7 56 49 0.49 81 0 0 - 9 48 41 21 0 21.2 15 106 -42 -11 2 45 - 8 35 29 -11 16 9 - 8 22 24 0.49 82 0 0 -10 14 57 21 0 22.4 16 106 -41 -11 29 13 - 9 1 32 -11 42 40 - 8 48 25 0.49 83 0 0 -10 41 37 21 0 23.8 17 106 -40 -11 56 7 - 9 28 0 -12 9 36 - 9 14 51 0.49 84 0 0 -11 8 42 21 0 25.2 18 105 -39 -12 23 25 - 9 54 53 -12 36 56 - 9 41 42 0.49 85 0 0 -11 36 11 21 0 26.7 19 105 -38 -12 51 6 -10 22 9 -13 4 41 -10 8 56 0.49 86 0 0 -12 4 4 21 0 28.3 20 105 -37 -13 19 12 -10 49 49 -13 32 48 -10 36 34 0.49 87 0 0 -12 32 19 21 0 30.0 21 105 -36 -13 47 39 -11 17 52 -14 1 18 -11 4 34 0.50 88 0 0 -13 0 55 21 0 31.8 22 104 -35 -14 16 29 -11 46 17 -14 30 10 -11 32 57 0.50 89 0 0 -13 29 54 21 0 33.7 23 104 -34 -14 45 39 -12 15 3 -14 59 23 -12 1 41 0.50 90 0 0 -13 59 12 21 0 35.6 24 104 -33 -15 15 11 -12 44 9 -15 28 56 -12 30 45 0.50 91 0 0 -14 28 51 21 0 37.7 26 103 -32 -15 45 1 -13 13 36 -15 58 49 -13 0 10 0.50 92 0 0 -14 58 48 21 0 39.8 27 103 -31 -16 15 11 -13 43 22 -16 29 1 -13 29 54 0.50 93 0 0 -15 29 4 21 0 42.0 28 102 -30 -16 45 39 -14 13 26 -16 59 31 -13 59 56 0.50 94 0 0 -15 59 37 21 0 44.2 29 102 -29 -17 16 24 -14 43 48 -17 30 18 -14 30 16 0.50 95 0 0 -16 30 27 21 0 46.6 30 102 -27 -17 47 25 -15 14 27 -18 1 22 -15 0 53 0.50 96 0 0 -17 1 33 21 0 49.0 31 101 -26 -18 18 41 -15 45 21 -18 32 40 -15 31 45 0.50 97 0 0 -17 32 53 21 0 51.5 32 101 -25 -18 50 12 -16 16 31 -19 4 13 -16 2 53 0.50 98 0 0 -18 4 27 21 0 54.1 33 100 -24 -19 21 57 -16 47 55 -19 36 0 -16 34 15 0.50 99 0 0 -18 36 13 21 0 56.8 34 99 -23 -19 53 54 -17 19 31 -20 7 59 -17 5 50 0.50 100 0 0 -19 8 12 21 0 59.5 35 99 -22 -20 26 3 -17 51 21 -20 40 9 -17 37 37 0.50 101 0 0 -19 40 22 21 1 2.3 36 98 -21 -20 58 22 -18 23 21 -21 12 30 -18 9 36 0.50 102 0 0 -20 12 41 21 1 5.1 37 98 -20 -21 30 51 -18 55 31 -21 45 1 -18 41 45 0.50 103 0 0 -20 45 10 21 1 8.1 38 97 -19 -22 3 28 -19 27 51 -22 17 40 -19 14 3 0.50 104 0 0 -21 17 46 21 1 11.0 39 96 -18 -22 36 13 -20 0 19 -22 50 26 -19 46 30 0.50 105 0 0 -21 50 29 21 1 14.1 40 96 -17 -23 9 4 -20 32 55 -23 23 19 -20 19 4 0.50 106 0 0 -22 23 18 21 1 17.2 41 95 -16 -23 42 0 -21 5 36 -23 56 16 -20 51 44 0.50 107 0 0 -22 56 11 21 1 20.3 42 94 -14 -24 15 1 -21 38 23 -24 29 18 -21 24 29 0.50 108 0 0 -23 29 8 21 1 23.5 43 93 -13 -24 48 4 -22 11 13 -25 2 23 -21 57 19 0.50 109 0 0 -24 2 7 21 1 26.8 44 92 -12 -25 21 10 -22 44 6 -25 35 29 -22 30 11 0.50 110 0 0 -24 35 8 21 1 30.1 45 91 -11 -25 54 16 -23 17 2 -26 8 37 -23 3 5 0.50 111 0 0 -25 8 9 21 1 33.4 46 90 -10 -26 27 22 -23 49 58 -26 41 44 -23 36 1 0.50 112 0 0 -25 41 9 21 1 36.8 47 89 -9 -27 0 27 -24 22 54 -27 14 49 -24 8 56 0.50 113 0 0 -26 14 7 21 1 40.3 48 88 -8 -27 33 29 -24 55 48 -27 47 52 -24 41 49 0.50 114 0 0 -26 47 3 21 1 43.7 48 87 -7 -28 6 28 -25 28 40 -28 20 51 -25 14 41 0.50 115 0 0 -27 19 54 21 1 47.2 49 86 -6 -28 39 22 -26 1 29 -28 53 46 -25 47 29 0.50 116 0 0 -27 52 40 21 1 50.7 50 85 -5 -29 12 10 -26 34 13 -29 26 35 -26 20 12 0.50 117 0 0 -28 25 20 21 1 54.3 51 84 -4 -29 44 52 -27 6 51 -29 59 17 -26 52 51 0.50 118 0 0 -28 57 53 21 1 57.9 52 82 -3 -30 17 26 -27 39 23 -30 31 51 -27 25 22 0.50 119 0 0 -29 30 18 21 2 1.5 53 81 -2 -30 49 51 -28 11 47 -31 4 16 -27 57 46 0.50 120 0 0 -30 2 33 21 2 5.1 53 80 -1 -31 22 6 -28 44 2 -31 36 31 -28 30 2 0.50 121 0 0 -30 34 38 21 2 8.7 54 78 0 -31 54 11 -29 16 8 -32 8 36 -29 2 7 0.50 122 0 0 -31 6 32 21 2 12.4 55 77 1 -32 26 3 -29 48 3 -32 40 28 -29 34 3 0.50 123 0 0 -31 38 14 21 2 16.1 56 75 2 -32 57 43 -30 19 47 -33 12 8 -30 5 47 0.50 124 0 0 -32 9 43 21 2 19.7 56 73 3 -33 29 10 -30 51 18 -33 43 34 -30 37 19 0.50 125 0 0 -32 40 58 21 2 23.4 57 72 4 -34 0 22 -31 22 36 -34 14 45 -31 8 37 0.50 126 0 0 -33 11 58 21 2 27.1 58 70 5 -34 31 19 -31 53 40 -34 45 41 -31 39 41 0.50 127 0 0 -33 42 43 21 2 30.8 58 68 6 -35 1 59 -32 24 29 -35 16 21 -32 10 31 0.50 128 0 0 -34 13 12 21 2 34.5 59 66 7 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0.50 141 0 0 -40 19 35 21 3 21.3 63 38 19 -41 37 1 -39 3 6 -41 51 3 -38 49 27 0.50 142 0 0 -40 45 10 21 3 24.8 63 35 20 -42 2 26 -39 28 52 -42 16 26 -39 15 14 0.50 143 0 0 -41 10 22 21 3 28.2 63 33 21 -42 27 26 -39 54 14 -42 41 23 -39 40 38 0.50 144 0 0 -41 35 8 21 3 31.6 64 30 22 -42 52 1 -40 19 12 -43 5 57 -40 5 38 0.50 145 0 0 -41 59 30 21 3 35.0 64 28 23 -43 16 11 -40 43 45 -43 30 5 -40 30 13 0.50 146 0 0 -42 23 28 21 3 38.4 64 26 23 -43 39 57 -41 7 54 -43 53 48 -40 54 24 0.50 147 0 0 -42 47 0 21 3 41.7 63 23 24 -44 3 17 -41 31 38 -44 17 6 -41 18 10 0.50 148 0 0 -43 10 7 21 3 45.0 63 21 25 -44 26 11 -41 54 57 -44 39 58 -41 41 31 0.50 149 0 0 -43 32 48 21 3 48.2 63 19 26 -44 48 40 -42 17 50 -45 2 25 -42 4 27 0.50 150 0 0 -43 55 5 21 3 51.5 63 16 26 -45 10 44 -42 40 19 -45 24 26 -42 26 57 0.50 151 0 0 -44 16 55 21 3 54.7 63 14 27 -45 32 22 -43 2 22 -45 46 2 -42 49 3 0.50 152 0 0 -44 38 21 21 3 57.8 63 12 28 -45 53 34 -43 24 0 -46 7 12 -43 10 43 0.50 153 0 0 -44 59 20 21 4 1.0 63 9 29 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10 0 -52 55 51 -55 22 12 -52 43 54 0.50 -157 0 0 -54 4 46 21 5 57.0 39 297 55 -55 12 8 -52 58 3 -55 24 19 -52 46 7 0.50 -156 0 0 -54 6 37 21 5 58.7 39 296 55 -55 13 57 -52 59 55 -55 26 8 -52 48 0 0.50 -155 0 0 -54 8 8 21 6 0.3 38 295 56 -55 15 27 -53 1 28 -55 27 37 -52 49 33 0.50 -154 0 0 -54 9 20 21 6 1.9 38 294 56 -55 16 37 -53 2 41 -55 28 48 -52 50 46 0.50 -153 0 0 -54 10 12 21 6 3.5 37 293 56 -55 17 29 -53 3 34 -55 29 39 -52 51 39 0.50 -152 0 0 -54 10 45 21 6 5.1 37 292 57 -55 18 1 -53 4 7 -55 30 11 -52 52 12 0.50 -151 0 0 -54 10 59 21 6 6.6 36 291 57 -55 18 15 -53 4 21 -55 30 25 -52 52 26 0.50 -150 0 0 -54 10 53 21 6 8.1 36 290 57 -55 18 9 -53 4 15 -55 30 19 -52 52 20 0.50 -149 0 0 -54 10 27 21 6 9.6 35 289 57 -55 17 44 -53 3 49 -55 29 54 -52 51 54 0.50 -148 0 0 -54 9 43 21 6 11.1 35 288 58 -55 17 0 -53 3 3 -55 29 11 -52 51 8 0.50 -147 0 0 -54 8 39 21 6 12.6 34 288 58 -55 15 58 -53 1 58 -55 28 8 -52 50 3 0.50 -146 0 0 -54 7 15 21 6 14.0 33 287 58 -55 14 36 -53 0 33 -55 26 46 -52 48 37 0.50 -145 0 0 -54 5 32 21 6 15.5 33 286 58 -55 12 55 -52 58 48 -55 25 6 -52 46 52 0.50 -144 0 0 -54 3 30 21 6 16.9 32 285 58 -55 10 55 -52 56 44 -55 23 6 -52 44 47 0.50 -143 0 0 -54 1 8 21 6 18.3 32 284 59 -55 8 35 -52 54 19 -55 20 47 -52 42 22 0.50 -142 0 0 -53 58 26 21 6 19.6 31 283 59 -55 5 57 -52 51 35 -55 18 10 -52 39 37 0.50 -141 0 0 -53 55 25 21 6 21.0 31 282 59 -55 2 59 -52 48 30 -55 15 12 -52 36 32 0.50 -140 0 0 -53 52 5 21 6 22.3 30 281 59 -54 59 42 -52 45 6 -55 11 56 -52 33 7 0.50 -139 0 0 -53 48 24 21 6 23.6 29 280 59 -54 56 6 -52 41 22 -55 8 20 -52 29 22 0.50 -138 0 0 -53 44 24 21 6 24.9 29 279 59 -54 52 10 -52 37 17 -55 4 25 -52 25 17 0.50 -137 0 0 -53 40 4 21 6 26.2 28 278 59 -54 47 55 -52 32 53 -55 0 11 -52 20 52 0.50 -136 0 0 -53 35 24 21 6 27.4 28 277 60 -54 43 20 -52 28 8 -54 55 37 -52 16 6 0.50 -135 0 0 -53 30 24 21 6 28.6 27 277 60 -54 38 25 -52 23 3 -54 50 43 -52 11 0 0.50 -134 0 0 -53 25 4 21 6 29.8 27 276 60 -54 33 11 -52 17 37 -54 45 30 -52 5 34 0.50 -133 0 0 -53 19 24 21 6 31.0 26 275 60 -54 27 37 -52 11 51 -54 39 57 -51 59 47 0.50 -132 0 0 -53 13 24 21 6 32.2 25 274 60 -54 21 42 -52 5 45 -54 34 4 -51 53 39 0.50 -131 0 0 -53 7 3 21 6 33.3 25 273 60 -54 15 28 -51 59 18 -54 27 51 -51 47 11 0.50 -130 0 0 -53 0 21 21 6 34.5 24 272 60 -54 8 54 -51 52 29 -54 21 17 -51 40 21 0.50 -129 0 0 -52 53 19 21 6 35.6 24 271 60 -54 1 59 -51 45 20 -54 14 24 -51 33 11 0.50 -128 0 0 -52 45 57 21 6 36.7 23 270 60 -53 54 44 -51 37 50 -54 7 10 -51 25 40 0.51 -127 0 0 -52 38 13 21 6 37.7 22 270 60 -53 47 8 -51 29 59 -53 59 36 -51 17 47 0.51 -126 0 0 -52 30 8 21 6 38.8 22 269 60 -53 39 11 -51 21 47 -53 51 41 -51 9 33 0.51 -125 0 0 -52 21 43 21 6 39.8 21 268 60 -53 30 54 -51 13 13 -53 43 25 -51 0 58 0.51 -124 0 0 -52 12 56 21 6 40.8 21 267 59 -53 22 16 -51 4 17 -53 34 48 -50 52 1 0.51 -123 0 0 -52 3 47 21 6 41.7 20 266 59 -53 13 16 -50 55 0 -53 25 51 -50 42 43 0.51 -122 0 0 -51 54 18 21 6 42.7 19 265 59 -53 3 56 -50 45 22 -53 16 32 -50 33 2 0.51 -121 0 0 -51 44 26 21 6 43.6 19 265 59 -52 54 14 -50 35 21 -53 6 51 -50 23 0 0.51 -120 0 0 -51 34 13 21 6 44.5 18 264 59 -52 44 10 -50 24 58 -52 56 50 -50 12 35 0.51 -119 0 0 -51 23 37 21 6 45.4 17 263 59 -52 33 45 -50 14 13 -52 46 26 -50 1 49 0.51 -118 0 0 -51 12 40 21 6 46.2 17 262 59 -52 22 57 -50 3 6 -52 35 41 -49 50 40 0.51 -117 0 0 -51 1 20 21 6 47.0 16 261 58 -52 11 48 -49 51 36 -52 24 33 -49 39 8 0.51 -116 0 0 -50 49 38 21 6 47.8 15 261 58 -52 0 17 -49 39 44 -52 13 4 -49 27 14 0.51 -115 0 0 -50 37 34 21 6 48.6 15 260 58 -51 48 23 -49 27 29 -52 1 12 -49 14 57 0.52 -114 0 0 -50 25 7 21 6 49.3 14 259 58 -51 36 7 -49 14 51 -51 48 58 -49 2 17 0.52 -113 0 0 -50 12 16 21 6 50.1 13 258 57 -51 23 28 -49 1 50 -51 36 21 -48 49 14 0.52 -112 0 0 -49 59 3 21 6 50.7 13 257 57 -51 10 26 -48 48 26 -51 23 22 -48 35 48 0.52 -111 0 0 -49 45 27 21 6 51.4 12 257 57 -50 57 2 -48 34 38 -51 9 59 -48 21 59 0.52 -110 0 0 -49 31 28 21 6 52.0 11 256 57 -50 43 14 -48 20 27 -50 56 14 -48 7 46 0.52 -109 0 0 -49 17 5 21 6 52.6 11 255 56 -50 29 3 -48 5 53 -50 42 5 -47 53 9 0.53 -108 0 0 -49 2 18 21 6 53.2 10 254 56 -50 14 29 -47 50 55 -50 27 33 -47 38 9 0.53 -107 0 0 -48 47 8 21 6 53.7 9 254 56 -49 59 31 -47 35 33 -50 12 37 -47 22 45 0.53 -106 0 0 -48 31 34 21 6 54.2 9 253 55 -49 44 9 -47 19 47 -49 57 17 -47 6 57 0.53 -105 0 0 -48 15 36 21 6 54.6 8 252 55 -49 28 24 -47 3 37 -49 41 34 -46 50 45 0.54 -104 0 0 -47 59 14 21 6 55.0 7 251 54 -49 12 14 -46 47 3 -49 25 27 -46 34 9 0.54 -103 0 0 -47 42 28 21 6 55.4 6 251 54 -48 55 41 -46 30 5 -49 8 56 -46 17 9 0.55 -102 0 0 -47 25 18 21 6 55.8 6 250 54 -48 38 43 -46 12 43 -48 52 1 -45 59 45 0.56 -101 0 0 -47 7 44 21 6 56.1 5 249 53 -48 21 21 -45 54 56 -48 34 41 -45 41 56 0.56 -100 0 0 -46 49 45 21 6 56.3 4 248 53 -48 3 35 -45 36 45 -48 16 57 -45 23 43 0.58 - 99 0 0 -46 31 22 21 6 56.6 3 248 52 -47 45 24 -45 18 10 -47 58 49 -45 5 5 0.60 - 98 0 0 -46 12 34 21 6 56.7 3 247 52 -47 26 49 -44 59 10 -47 40 16 -44 46 3 0.63 - 97 0 0 -45 53 22 21 6 56.9 2 246 51 -47 7 50 -44 39 46 -47 21 19 -44 26 37 0.68 - 96 0 0 -45 33 45 21 6 57.0 1 245 51 -46 48 25 -44 19 57 -47 1 57 -44 6 46 0.80 - 95 0 0 -45 13 44 21 6 57.0 0 245 50 -46 28 37 .. .. .. -46 42 10 .. .. .. 1.46 Uncertainty in time = +/- 1 secs Prediction of 2022 Oct 31.0 Data for the target star ------------------------ * name: TYC 6142-00924-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 09 57.4519 DE: -17 43 39.248 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 09 57.4520 DE: -17 43 39.249 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7) Iris asteroid class: ShapeModel approx. diameter [km]: 222 approx. diameter ["]: 0.097 distance from Earth [AU]: 3.16050 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#124 date of fit: 2022 Aug 03 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): 0.011", 0.009", 103.447° remarks: * orbital elements for (7)Iris : Mean anomaly = 139.4933248222 deg Arg. of pericenter = 145.4020600538 deg Long. of node = 259.5077034418 deg Inclination = 5.5175884701 deg Eccentricity = 0.2296372900 Semimajor axis = 2.3869546944 AU Perihelion dist = 1.8388208870 AU Mag: H = 5.62, G = 0.15 Epoch of elements : MJD 59943.87736111 TDT (2022 Dec 30.8774) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1242022Aug03,7.86,2022,12,30,21.059775,-0.161974,-0.411372,14.840665,-5.861067,-0.005070,0.001587,-0.000001,0.000000 157.6214,-17.8341,-135.23,-23.12,False TYC 6142-00924-1,14.16595883,-17.7275688,0.00,10.37,0.00,0.0,0,,14.18668605,-17.8341099,1.33,0.00,0,0,0 7,Iris,11.32,222.3,3.1605,0,0,2.892,-16.31,,15.2,0 0,139.2588,2022,12,30,145.4021,259.5077,5.5176,0.22964,2.38695,1.83882,5.62,5.0,0.15 1.090,0.0110,0.0087,103,0.0087,Known errors,-1.00,-1,-1,-1 20221230_0924-1,59883.04 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Oct 31, 00:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org