IOTA/IOTA-ES occultation update for (3122) Florence / TYC 3190-01507-1 event on 2024 Dec 01, 13:19 UT Visible from Summary ------- On 2024 Dec 01 UT, the 4.38730041634116 km diameter asteroid (3122) Florence will occult a 10.4 mag star in the constellation Cygnus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.53 mag to 14.92 mag (the magnitude of the asteroid) for at most 0.290 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: 17 * date and approx. time of event: 2024 Dec 01, 13:12 - 2024 Dec 01, 13:26 * geocentric midpoint of event [JD]: 2460646.05507763 * magnitude of target star: 10.41 * magnitude drop [mag]: 4.53 * estimated maximum duration [s]: 0.290 * Moon: 0 % sunlit, 96° distance * Sun: 93° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 4 * 1 sigma uncertainty interval [path widths]: +/- 3.86 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.055) * 1 sigma uncertainty ellipse (major, minor, PA): (0.055", 0.011", 2°) * approx speed of asteroid's shadow [km/s]: 15.1632 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 3190-01507-1 by 3122 Florence on 2024 Dec 1 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 - 16 0 0 -21 41 23 13 12 18.9 0 43 85 .. .. .. -21 39 37 .. .. .. -21 25 54 .... - 15 0 0 -20 40 1 13 12 19.0 1 42 84 -20 41 49 -20 38 14 -20 55 39 -20 24 24 -0.16 - 14 0 0 -19 37 15 13 12 19.3 3 42 83 -19 39 3 -19 35 27 -19 53 0 -19 21 29 -0.12 - 13 0 0 -18 33 5 13 12 19.9 4 42 82 -18 34 54 -18 31 16 -18 48 58 -18 17 11 -0.10 - 12 0 0 -17 27 32 13 12 20.8 6 41 80 -17 29 22 -17 25 42 -17 43 33 -17 11 30 -0.09 - 11 0 0 -16 20 37 13 12 22.0 7 41 79 -16 22 28 -16 18 46 -16 36 46 -16 4 27 -0.09 - 10 0 0 -15 12 22 13 12 23.5 9 41 78 -15 14 14 -15 10 30 -15 28 39 -14 56 4 -0.09 - 9 0 0 -14 2 50 13 12 25.3 10 41 76 -14 4 42 -14 0 57 -14 19 14 -13 46 24 -0.09 - 8 0 0 -12 52 2 13 12 27.4 12 40 75 -12 53 55 -12 50 8 -13 8 34 -12 35 29 -0.08 - 7 0 0 -11 40 2 13 12 29.9 13 40 73 -11 41 56 -11 38 7 -11 56 41 -11 23 22 -0.08 - 6 0 0 -10 26 52 13 12 32.6 15 40 72 -10 28 47 -10 24 57 -10 43 38 -10 10 5 -0.08 - 5 0 0 - 9 12 37 13 12 35.8 16 40 70 - 9 14 33 - 9 10 42 - 9 29 30 - 8 55 44 -0.08 - 4 0 0 - 7 57 21 13 12 39.2 18 40 69 - 7 59 18 - 7 55 25 - 8 14 20 - 7 40 22 -0.08 - 3 0 0 - 6 41 8 13 12 43.0 20 40 67 - 6 43 5 - 6 39 11 - 6 58 13 - 6 24 3 -0.08 - 2 0 0 - 5 24 3 13 12 47.2 21 39 65 - 5 26 0 - 5 22 5 - 5 41 13 - 5 6 52 -0.08 - 1 0 0 - 4 6 11 13 12 51.7 23 39 64 - 4 8 9 - 4 4 12 - 4 23 25 - 3 48 55 -0.08 0 0 0 - 2 47 38 13 12 56.6 24 39 62 - 2 49 36 - 2 45 39 - 3 4 57 - 2 30 18 -0.08 1 0 0 - 1 28 29 13 13 1.8 26 39 60 - 1 30 29 - 1 26 30 - 1 45 52 - 1 11 6 -0.08 2 0 0 - 0 8 52 13 13 7.4 28 39 59 - 0 10 52 - 0 6 52 - 0 26 19 0 8 35 -0.08 3 0 0 1 11 7 13 13 13.3 29 39 57 1 9 7 1 13 7 0 53 38 1 28 37 -0.08 4 0 0 2 31 22 13 13 19.5 31 39 55 2 29 22 2 33 22 2 13 51 2 48 54 -0.08 5 0 0 3 51 45 13 13 26.1 33 40 54 3 49 45 3 53 46 3 34 12 4 9 19 -0.08 6 0 0 5 12 10 13 13 32.9 35 40 52 5 10 10 5 14 11 4 54 36 5 29 45 -0.07 7 0 0 6 32 29 13 13 40.1 36 40 50 6 30 29 6 34 30 6 14 55 6 50 4 -0.07 8 0 0 7 52 36 13 13 47.5 38 40 49 7 50 35 7 54 36 7 35 2 8 10 10 -0.07 9 0 0 9 12 22 13 13 55.2 40 40 47 9 10 21 9 14 22 8 54 49 9 29 55 -0.07 10 0 0 10 31 41 13 14 3.1 41 40 45 10 29 41 10 33 41 10 14 10 10 49 13 -0.07 11 0 0 11 50 27 13 14 11.3 43 41 44 11 48 27 11 52 27 11 32 58 12 7 56 -0.07 12 0 0 13 8 32 13 14 19.6 44 41 42 13 6 33 13 10 32 12 51 7 13 25 59 -0.07 13 0 0 14 25 51 13 14 28.1 46 41 41 14 23 52 14 27 51 14 8 29 14 43 14 -0.07 14 0 0 15 42 18 13 14 36.8 48 42 39 15 40 19 15 44 16 15 25 0 15 59 36 -0.07 15 0 0 16 57 46 13 14 45.6 49 42 37 16 55 48 16 59 44 16 40 32 17 15 0 -0.07 16 0 0 18 12 11 13 14 54.5 51 43 36 18 10 13 18 14 8 17 55 3 18 29 20 -0.07 17 0 0 19 25 28 13 15 3.6 52 43 34 19 23 31 19 27 25 19 8 25 19 42 31 -0.07 18 0 0 20 37 32 13 15 12.7 54 43 33 20 35 36 20 39 28 20 20 35 20 54 29 -0.07 19 0 0 21 48 20 13 15 21.8 55 44 31 21 46 24 21 50 15 21 31 30 22 5 10 -0.07 20 0 0 22 57 48 13 15 31.0 57 45 30 22 55 53 22 59 43 22 41 5 23 14 31 -0.07 21 0 0 24 5 53 13 15 40.2 58 45 28 24 4 0 24 7 47 23 49 18 24 22 29 -0.06 22 0 0 25 12 34 13 15 49.4 60 46 27 25 10 41 25 14 27 24 56 6 25 29 2 -0.06 23 0 0 26 17 46 13 15 58.6 61 47 25 26 15 54 26 19 38 26 1 26 26 34 7 -0.06 24 0 0 27 21 30 13 16 7.7 63 47 24 27 19 39 27 23 21 27 5 18 27 37 42 -0.06 25 0 0 28 23 43 13 16 16.8 64 48 23 28 21 53 28 25 33 28 7 39 28 39 47 -0.06 26 0 0 29 24 25 13 16 25.8 65 49 21 29 22 36 29 26 14 29 8 30 29 40 20 -0.06 27 0 0 30 23 35 13 16 34.8 67 50 20 30 21 47 30 25 23 30 7 49 30 39 22 -0.06 28 0 0 31 21 13 13 16 43.7 68 51 19 31 19 26 31 23 0 31 5 35 31 36 51 -0.06 29 0 0 32 17 19 13 16 52.5 69 52 17 32 15 33 32 19 5 32 1 50 32 32 48 -0.06 30 0 0 33 11 53 13 17 1.2 70 53 16 33 10 8 33 13 38 32 56 33 33 27 13 -0.06 31 0 0 34 4 56 13 17 9.8 72 54 15 34 3 12 34 6 41 33 49 45 34 20 8 -0.06 32 0 0 34 56 29 13 17 18.3 73 55 14 34 54 46 34 58 12 34 41 27 35 11 31 -0.06 33 0 0 35 46 33 13 17 26.6 74 56 12 35 44 50 35 48 15 35 31 39 36 1 26 -0.06 34 0 0 36 35 8 13 17 34.9 75 58 11 36 33 27 36 36 49 36 20 23 36 49 52 -0.06 35 0 0 37 22 16 13 17 43.0 76 59 10 37 20 36 37 23 56 37 7 40 37 36 52 -0.06 36 0 0 38 7 59 13 17 51.0 77 61 9 38 6 20 38 9 38 37 53 32 38 22 26 -0.06 37 0 0 38 52 17 13 17 58.9 78 63 8 38 50 39 38 53 55 38 37 59 39 6 36 -0.06 38 0 0 39 35 13 13 18 6.6 79 65 7 39 33 36 39 36 51 39 21 4 39 49 23 -0.06 39 0 0 40 16 49 13 18 14.2 80 68 6 40 15 13 40 18 25 40 2 47 40 30 50 -0.06 40 0 0 40 57 5 13 18 21.7 81 70 5 40 55 30 40 58 40 40 43 12 41 10 58 -0.06 41 0 0 41 36 4 13 18 29.1 82 74 4 41 34 29 41 37 38 41 22 19 41 49 49 -0.06 42 0 0 42 13 47 13 18 36.3 83 78 3 42 12 13 42 15 20 42 0 10 42 27 24 -0.06 43 0 0 42 50 16 13 18 43.4 84 83 2 42 48 44 42 51 49 42 36 47 43 3 45 -0.06 44 0 0 43 25 33 13 18 50.4 84 90 1 43 24 2 43 27 5 43 12 12 43 38 55 -0.06 45 0 0 43 59 40 13 18 57.3 85 98 0 43 58 9 44 1 11 43 46 26 44 12 54 -0.07 46 0 0 44 32 38 13 19 4.0 85 109 -1 44 31 8 44 34 8 44 19 31 44 45 45 -0.07 47 0 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53 41 21 -0.05 73 0 0 53 41 19 13 21 29.4 71 245 -21 53 40 4 53 42 33 53 30 25 53 52 13 -0.05 74 0 0 53 51 38 13 21 33.7 71 246 -22 53 50 23 53 52 52 53 40 46 54 2 29 -0.05 75 0 0 54 1 22 13 21 38.0 70 247 -22 54 0 8 54 2 36 53 50 33 54 12 11 -0.05 76 0 0 54 10 32 13 21 42.3 69 248 -23 54 9 18 54 11 46 53 59 46 54 21 18 -0.05 77 0 0 54 19 8 13 21 46.5 69 249 -23 54 17 55 54 20 22 54 8 24 54 29 53 -0.05 78 0 0 54 27 12 13 21 50.7 68 250 -24 54 25 59 54 28 25 54 16 30 54 37 54 -0.05 79 0 0 54 34 43 13 21 54.8 68 251 -25 54 33 30 54 35 56 54 24 3 54 45 23 -0.05 80 0 0 54 41 42 13 21 58.9 67 252 -25 54 40 29 54 42 55 54 31 4 54 52 20 -0.05 81 0 0 54 48 9 13 22 3.0 66 253 -26 54 46 56 54 49 22 54 37 32 54 58 45 -0.05 82 0 0 54 54 4 13 22 7.0 66 254 -26 54 52 52 54 55 17 54 43 29 55 4 39 -0.05 83 0 0 54 59 29 13 22 10.9 65 255 -27 54 58 17 55 0 41 54 48 56 55 10 3 -0.05 84 0 0 55 4 23 13 22 14.9 65 256 -28 55 3 11 55 5 35 54 53 51 55 14 55 -0.05 85 0 0 55 8 46 13 22 18.8 64 257 -28 55 7 34 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7.0 57 269 -36 55 19 44 55 22 8 55 10 28 55 31 24 -0.05 99 0 0 55 18 27 13 23 10.6 56 270 -36 55 17 15 55 19 39 55 7 58 55 28 56 -0.05 100 0 0 55 15 28 13 23 14.1 56 271 -37 55 14 16 55 16 40 55 4 59 55 25 58 -0.05 101 0 0 55 12 0 13 23 17.6 55 272 -37 55 10 48 55 13 12 55 1 29 55 22 30 -0.05 102 0 0 55 8 2 13 23 21.2 54 273 -38 55 6 49 55 9 14 54 57 30 55 18 33 -0.05 103 0 0 55 3 33 13 23 24.7 54 274 -38 55 2 21 55 4 46 54 53 1 55 14 6 -0.05 104 0 0 54 58 35 13 23 28.2 53 275 -39 54 57 22 54 59 47 54 48 1 55 9 8 -0.05 105 0 0 54 53 5 13 23 31.6 53 275 -40 54 51 53 54 54 18 54 42 30 55 3 41 -0.05 106 0 0 54 47 5 13 23 35.1 52 276 -40 54 45 52 54 48 18 54 36 28 54 57 42 -0.05 107 0 0 54 40 34 13 23 38.5 51 277 -41 54 39 21 54 41 47 54 29 55 54 51 12 -0.05 108 0 0 54 33 31 13 23 42.0 51 278 -41 54 32 17 54 34 44 54 22 50 54 44 11 -0.05 109 0 0 54 25 56 13 23 45.4 50 279 -42 54 24 42 54 27 9 54 15 13 54 36 38 -0.06 110 0 0 54 17 48 13 23 48.9 50 280 -43 54 16 35 54 19 2 54 7 4 54 28 33 -0.06 111 0 0 54 9 8 13 23 52.3 49 281 -43 54 7 54 54 10 22 53 58 21 54 19 55 -0.06 112 0 0 53 59 55 13 23 55.7 48 281 -44 53 58 41 54 1 9 53 49 6 54 10 44 -0.06 113 0 0 53 50 8 13 23 59.1 48 282 -44 53 48 53 53 51 22 53 39 16 54 0 59 -0.06 114 0 0 53 39 46 13 24 2.5 47 283 -45 53 38 31 53 41 1 53 28 52 53 50 40 -0.06 115 0 0 53 28 50 13 24 5.9 47 284 -46 53 27 35 53 30 5 53 17 53 53 39 47 -0.06 116 0 0 53 17 18 13 24 9.3 46 285 -46 53 16 2 53 18 33 53 6 18 53 28 18 -0.06 117 0 0 53 5 10 13 24 12.7 45 286 -47 53 3 54 53 6 26 52 54 7 53 16 13 -0.06 118 0 0 52 52 25 13 24 16.0 45 287 -47 52 51 9 52 53 41 52 41 19 53 3 32 -0.06 119 0 0 52 39 3 13 24 19.4 44 287 -48 52 37 46 52 40 19 52 27 53 52 50 13 -0.06 120 0 0 52 25 2 13 24 22.8 43 288 -49 52 23 45 52 26 19 52 13 49 52 36 16 -0.06 121 0 0 52 10 23 13 24 26.1 43 289 -49 52 9 6 52 11 40 51 59 6 52 21 40 -0.06 122 0 0 51 55 4 13 24 29.5 42 290 -50 51 53 46 51 56 22 51 43 43 52 6 24 -0.06 123 0 0 51 39 4 13 24 32.8 41 291 -51 51 37 45 51 40 22 51 27 39 51 50 29 -0.06 124 0 0 51 22 22 13 24 36.2 41 292 -51 51 21 4 51 23 41 51 10 54 51 33 51 -0.06 125 0 0 51 4 58 13 24 39.5 40 292 -52 51 3 39 51 6 18 50 53 25 51 16 32 -0.06 126 0 0 50 46 51 13 24 42.8 39 293 -53 50 45 31 50 48 11 50 35 14 50 58 29 -0.06 127 0 0 50 27 59 13 24 46.1 39 294 -53 50 26 39 50 29 20 50 16 17 50 39 42 -0.06 128 0 0 50 8 22 13 24 49.5 38 295 -54 50 7 2 50 9 43 49 56 36 50 20 9 -0.06 129 0 0 49 47 59 13 24 52.8 37 296 -55 49 46 37 49 49 20 49 36 7 49 59 50 -0.06 130 0 0 49 26 47 13 24 56.0 36 296 -56 49 25 25 49 28 9 49 14 51 49 38 44 -0.06 131 0 0 49 4 47 13 24 59.3 36 297 -56 49 3 25 49 6 10 48 52 46 49 16 49 -0.06 132 0 0 48 41 57 13 25 2.6 35 298 -57 48 40 34 48 43 21 48 29 50 48 54 5 -0.06 133 0 0 48 18 16 13 25 5.8 34 299 -58 48 16 53 48 19 40 48 6 4 48 30 29 -0.06 134 0 0 47 53 43 13 25 9.1 33 299 -59 47 52 18 47 55 7 47 41 24 48 6 1 -0.06 135 0 0 47 28 15 13 25 12.3 32 300 -59 47 26 50 47 29 41 47 15 51 47 40 40 -0.07 136 0 0 47 1 53 13 25 15.5 32 301 -60 47 0 27 47 3 19 46 49 23 47 14 23 -0.07 137 0 0 46 34 34 13 25 18.7 31 302 -61 46 33 8 46 36 1 46 21 58 46 47 11 -0.07 138 0 0 46 6 18 13 25 21.8 30 302 -62 46 4 51 46 7 45 45 53 35 46 19 1 -0.07 139 0 0 45 37 2 13 25 24.9 29 303 -63 45 35 34 45 38 30 45 24 13 45 49 51 -0.07 140 0 0 45 6 46 13 25 28.0 28 304 -63 45 5 17 45 8 14 44 53 50 45 19 42 -0.07 141 0 0 44 35 27 13 25 31.1 27 305 -64 44 33 58 44 36 57 44 22 25 44 48 30 -0.07 142 0 0 44 3 5 13 25 34.1 26 305 -65 44 1 35 44 4 36 43 49 56 44 16 15 -0.07 143 0 0 43 29 38 13 25 37.1 25 306 -66 43 28 7 43 31 9 43 16 22 43 42 55 -0.07 144 0 0 42 55 5 13 25 40.0 25 307 -67 42 53 33 42 56 37 42 41 41 43 8 28 -0.07 145 0 0 42 19 23 13 25 42.9 24 307 -68 42 17 51 42 20 56 42 5 53 42 32 54 -0.07 146 0 0 41 42 32 13 25 45.7 23 308 -69 41 40 59 41 44 6 41 28 54 41 56 10 -0.07 147 0 0 41 4 30 13 25 48.5 22 309 -69 41 2 56 41 6 5 40 50 45 41 18 16 -0.07 148 0 0 40 25 16 13 25 51.1 21 310 -70 40 23 41 40 26 51 40 11 23 40 39 9 -0.07 149 0 0 39 44 48 13 25 53.8 20 310 -71 39 43 12 39 46 24 39 30 48 39 58 49 -0.08 150 0 0 39 3 5 13 25 56.3 19 311 -72 39 1 28 39 4 42 38 48 57 39 17 14 -0.08 151 0 0 38 20 6 13 25 58.7 18 311 -73 38 18 28 38 21 43 38 5 49 38 34 22 -0.08 152 0 0 37 35 48 13 26 1.1 16 312 -74 37 34 10 37 37 27 37 21 25 37 50 13 -0.08 153 0 0 36 50 13 13 26 3.3 15 313 -75 36 48 33 36 51 52 36 35 41 37 4 45 -0.08 154 0 0 36 3 17 13 26 5.5 14 313 -76 36 1 37 36 4 58 35 48 38 36 17 57 -0.08 155 0 0 35 15 1 13 26 7.5 13 314 -77 35 13 19 35 16 43 35 0 13 35 29 49 -0.08 156 0 0 34 25 23 13 26 9.3 12 314 -77 34 23 41 34 27 6 34 10 28 34 40 19 -0.09 157 0 0 33 34 24 13 26 11.1 11 315 -78 33 32 40 33 36 7 33 19 20 33 49 27 -0.09 158 0 0 32 42 1 13 26 12.6 9 316 -79 32 40 17 32 43 46 32 26 50 32 57 13 -0.09 159 0 0 31 48 16 13 26 14.1 8 316 -80 31 46 31 31 50 1 31 32 57 32 3 35 -0.10 160 0 0 30 53 8 13 26 15.3 7 317 -80 30 51 22 30 54 54 30 37 42 31 8 35 -0.10 161 0 0 29 56 37 13 26 16.4 6 317 -81 29 54 51 29 58 24 29 41 3 30 12 12 -0.11 162 0 0 28 58 44 13 26 17.2 4 318 -81 28 56 57 29 0 32 28 43 3 29 14 26 -0.12 163 0 0 27 59 29 13 26 17.9 3 318 -81 27 57 41 28 1 18 27 43 41 28 15 18 -0.14 164 0 0 26 58 54 13 26 18.3 2 319 -81 26 57 5 27 0 43 26 42 58 27 14 50 -0.20 165 0 0 25 56 59 13 26 18.5 0 319 -80 25 55 9 25 58 49 25 40 56 26 13 1 -0.66 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 3190-01507-1 * constellation : Cygnus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 24 09.8367 DE: +42 57 27.180 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 24 09.8366 DE: +42 57 27.179 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.4 * B mag [mag]: 11.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3122) Florence asteroid class: asteroid system: multiple bodies approx. diameter [km]: 4 approx. diameter ["]: 0.012 distance from Earth [AU]: 0.51980 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#742 date of fit: 2023 Jun 08 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): 0.055", 0.011", 1.65900000000001° remarks: * orbital elements for (3122)Florence : Mean anomaly = 19.7522667173 deg Arg. of pericenter = 27.9060555340 deg Long. of node = 336.0479290743 deg Inclination = 22.1386678974 deg Eccentricity = 0.4231391822 Semimajor axis = 1.7691883274 AU Perihelion dist = 1.0205754254 AU Mag: H = 13.92, G = 0.15 Epoch of elements : MJD 60645.55507817 TDT (2024 Dec 01.5551) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#7422023Jun08,0.29,2024,12,1,13.321863,-0.028239,0.043034,7.164661,4.681443,0.001975,0.001022,0.000000,0.000001 50.5552,43.0682,-22.52,-21.93,False TYC 3190-01507-1,21.40273248,42.9575504,10.98,10.41,10.10,0.1,0,,21.41828062,43.0681509,4.53,4.39,0,0,0 3122,Florence,14.92,4.425,0.5198,0,2,11.066,79.17,,0.4,0 ,0.2,4.600,0.300000,,,,,, ,0.3,9.800,1.020000,,,,,, 0,19.5198,2024,12,1,27.9061,336.0479,22.1387,0.42314,1.76919,1.02058,13.92,5.0,0.15 4.873,0.0547,0.0107,2,0.0453,Known errors,1.03,0,-1,-1 20241201_1507-1,60140.72 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org