IOTA/IOTA-ES occultation update for (3895) Earhart / TYC 6313-01983-1 event on 2024 Oct 17, 04:27 UT Visible from Summary ------- On 2024 Oct 17 UT, the 10.647 km diameter asteroid (3895) Earhart will occult a 11.9 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 5.40 mag to 17.24 mag (the magnitude of the asteroid) for at most 0.690 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: 95 * date and approx. time of event: 2024 Oct 17, 04:21 - 2024 Oct 17, 04:34 * geocentric midpoint of event [JD]: 2460600.68598833 * magnitude of target star: 11.85 * magnitude drop [mag]: 5.40 * estimated maximum duration [s]: 0.690 * Moon: 100 % sunlit, 80° distance * Sun: 95° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 12 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 102°) * approx speed of asteroid's shadow [km/s]: 15.5339 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6313-01983-1 by 3895 Earhart on 2024 Oct 17 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 134 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 45 8 28 .. .. .. .... 135 0 0 44 57 47 4 21 33.4 1 112 32 44 54 24 45 1 9 44 51 26 45 4 8 .... 136 0 0 44 40 20 4 21 33.5 1 113 31 44 36 57 44 43 43 44 33 58 44 46 43 -0.23 137 0 0 44 22 29 4 21 33.7 2 114 31 44 19 5 44 25 53 44 16 6 44 28 52 -0.29 138 0 0 44 4 13 4 21 34.0 3 114 31 44 0 49 44 7 37 43 57 49 44 10 37 -0.33 139 0 0 43 45 31 4 21 34.4 4 115 31 43 42 6 43 48 56 43 39 6 43 51 57 -0.35 140 0 0 43 26 24 4 21 34.8 5 116 31 43 22 59 43 29 50 43 19 58 43 32 51 -0.36 141 0 0 43 6 52 4 21 35.3 5 116 31 43 3 27 43 10 18 43 0 25 43 13 20 -0.37 142 0 0 42 46 55 4 21 36.0 6 117 31 42 43 29 42 50 22 42 40 27 42 53 24 -0.38 143 0 0 42 26 33 4 21 36.7 7 118 31 42 23 6 42 30 0 42 20 4 42 33 2 -0.38 144 0 0 42 5 45 4 21 37.5 8 118 30 42 2 18 42 9 12 41 59 15 42 12 15 -0.39 145 0 0 41 44 32 4 21 38.5 9 119 30 41 41 4 41 48 0 41 38 1 41 51 3 -0.39 146 0 0 41 22 53 4 21 39.5 10 120 30 41 19 25 41 26 22 41 16 21 41 29 26 -0.39 147 0 0 41 0 49 4 21 40.6 10 121 30 40 57 20 41 4 18 40 54 16 41 7 23 -0.39 148 0 0 40 38 20 4 21 41.8 11 121 29 40 34 50 40 41 50 40 31 46 40 44 54 -0.40 149 0 0 40 15 25 4 21 43.2 12 122 29 40 11 55 40 18 56 40 8 50 40 22 1 -0.40 150 0 0 39 52 6 4 21 44.6 13 123 29 39 48 35 39 55 37 39 45 30 39 58 43 -0.40 151 0 0 39 28 22 4 21 46.2 14 123 29 39 24 50 39 31 53 39 21 44 39 34 59 -0.40 152 0 0 39 4 12 4 21 47.9 15 124 28 39 0 41 39 7 44 38 57 34 39 10 51 -0.40 153 0 0 38 39 38 4 21 49.7 16 124 28 38 36 6 38 43 10 38 32 59 38 46 18 -0.40 154 0 0 38 14 40 4 21 51.6 16 125 28 38 11 7 38 18 12 38 8 0 38 21 20 -0.40 155 0 0 37 49 17 4 21 53.6 17 126 27 37 45 44 37 52 50 37 42 36 37 55 58 -0.40 156 0 0 37 23 30 4 21 55.8 18 126 27 37 19 56 37 27 4 37 16 48 37 30 12 -0.41 157 0 0 36 57 19 4 21 58.1 19 127 27 36 53 45 37 0 54 36 50 37 37 4 2 -0.41 158 0 0 36 30 45 4 22 0.5 20 128 26 36 27 11 36 34 20 36 24 2 36 37 29 -0.41 159 0 0 36 3 48 4 22 3.0 21 128 26 36 0 13 36 7 23 35 57 4 36 10 33 -0.41 160 0 0 35 36 28 4 22 5.7 22 129 25 35 32 53 35 40 4 35 29 43 35 43 14 -0.41 161 0 0 35 8 46 4 22 8.5 23 130 25 35 5 10 35 12 22 35 2 0 35 15 32 -0.41 162 0 0 34 40 41 4 22 11.4 24 130 25 34 37 5 34 44 18 34 33 55 34 47 28 -0.41 163 0 0 34 12 16 4 22 14.5 25 131 24 34 8 39 34 15 52 34 5 28 34 19 3 -0.41 164 0 0 33 43 29 4 22 17.7 26 132 24 33 39 52 33 47 6 33 36 41 33 50 17 -0.41 165 0 0 33 14 21 4 22 21.0 27 132 23 33 10 44 33 17 59 33 7 33 33 21 10 -0.41 166 0 0 32 44 54 4 22 24.5 28 133 23 32 41 17 32 48 32 32 38 5 32 51 44 -0.41 167 0 0 32 15 7 4 22 28.2 29 134 22 32 11 30 32 18 45 32 8 18 32 21 58 -0.41 168 0 0 31 45 2 4 22 31.9 29 134 22 31 41 24 31 48 40 31 38 12 31 51 53 -0.41 169 0 0 31 14 39 4 22 35.8 30 135 21 31 11 0 31 18 17 31 7 48 31 21 30 -0.41 170 0 0 30 43 58 4 22 39.9 31 136 20 30 40 19 30 47 37 30 37 7 30 50 50 -0.41 171 0 0 30 13 1 4 22 44.1 32 136 20 30 9 22 30 16 40 30 6 9 30 19 53 -0.41 172 0 0 29 41 48 4 22 48.4 33 137 19 29 38 9 29 45 27 29 34 56 29 48 40 -0.41 173 0 0 29 10 19 4 22 52.9 34 138 19 29 6 40 29 13 59 29 3 27 29 17 12 -0.41 174 0 0 28 38 37 4 22 57.5 35 138 18 28 34 58 28 42 16 28 31 44 28 45 30 -0.41 175 0 0 28 6 41 4 23 2.3 36 139 17 28 3 2 28 10 21 27 59 48 28 13 34 -0.42 176 0 0 27 34 33 4 23 7.2 37 140 17 27 30 53 27 38 13 27 27 40 27 41 26 -0.42 177 0 0 27 2 13 4 23 12.3 38 141 16 26 58 33 27 5 53 26 55 20 27 9 6 -0.42 178 0 0 26 29 42 4 23 17.5 39 141 15 26 26 3 26 33 22 26 22 49 26 36 36 -0.42 179 0 0 25 57 2 4 23 22.8 40 142 15 25 53 23 26 0 42 25 50 9 26 3 56 -0.42 -180 0 0 25 24 13 4 23 28.3 41 143 14 25 20 34 25 27 53 25 17 20 25 31 7 -0.42 -179 0 0 24 51 17 4 23 33.9 42 144 13 24 47 37 24 54 57 24 44 24 24 58 11 -0.42 -178 0 0 24 18 14 4 23 39.6 43 145 13 24 14 34 24 21 53 24 11 21 24 25 7 -0.42 -177 0 0 23 45 5 4 23 45.5 44 145 12 23 41 26 23 48 45 23 38 12 23 51 58 -0.42 -176 0 0 23 11 52 4 23 51.5 45 146 11 23 8 12 23 15 31 23 4 59 23 18 45 -0.42 -175 0 0 22 38 35 4 23 57.6 46 147 10 22 34 56 22 42 15 22 31 43 22 45 28 -0.42 -174 0 0 22 5 16 4 24 3.8 47 148 9 22 1 37 22 8 55 21 58 24 22 12 9 -0.42 -173 0 0 21 31 56 4 24 10.2 48 149 9 21 28 17 21 35 35 21 25 4 21 38 48 -0.42 -172 0 0 20 58 36 4 24 16.7 49 150 8 20 54 57 21 2 15 20 51 44 21 5 28 -0.42 -171 0 0 20 25 16 4 24 23.3 50 151 7 20 21 38 20 28 55 20 18 25 20 32 8 -0.42 -170 0 0 19 51 59 4 24 30.0 51 152 6 19 48 21 19 55 38 19 45 9 19 58 50 -0.42 -169 0 0 19 18 45 4 24 36.8 52 153 5 19 15 7 19 22 23 19 11 55 19 25 36 -0.42 -168 0 0 18 45 36 4 24 43.8 53 155 5 18 41 58 18 49 14 18 38 46 18 52 26 -0.42 -167 0 0 18 12 32 4 24 50.8 54 156 4 18 8 54 18 16 9 18 5 43 18 19 21 -0.42 -166 0 0 17 39 34 4 24 57.9 55 157 3 17 35 57 17 43 12 17 32 46 17 46 23 -0.42 -165 0 0 17 6 45 4 25 5.1 56 158 2 17 3 8 17 10 21 16 59 57 17 13 33 -0.42 -164 0 0 16 34 4 4 25 12.4 56 160 1 16 30 27 16 37 40 16 27 17 16 40 51 -0.43 -163 0 0 16 1 33 4 25 19.8 57 161 0 15 57 57 16 5 9 15 54 47 16 8 19 -0.43 -162 0 0 15 29 13 4 25 27.2 58 163 -1 15 25 37 15 32 48 15 22 27 15 35 59 -0.43 -161 0 0 14 57 5 4 25 34.7 59 164 -2 14 53 30 15 0 40 14 50 20 15 3 50 -0.43 -160 0 0 14 25 10 4 25 42.3 60 166 -2 14 21 35 14 28 45 14 18 26 14 31 54 -0.43 -159 0 0 13 53 29 4 25 50.0 60 168 -3 13 49 55 13 57 3 13 46 46 14 0 12 -0.43 -158 0 0 13 22 3 4 25 57.7 61 169 -4 13 18 29 13 25 37 13 15 21 13 28 46 -0.43 -157 0 0 12 50 53 4 26 5.4 62 171 -5 12 47 20 12 54 27 12 44 12 12 57 35 -0.43 -156 0 0 12 20 1 4 26 13.3 62 173 -6 12 16 28 12 23 34 12 13 20 12 26 41 -0.43 -155 0 0 11 49 26 4 26 21.1 63 175 -7 11 45 54 11 52 58 11 42 46 11 56 6 -0.43 -154 0 0 11 19 10 4 26 29.0 64 178 -8 11 15 38 11 22 42 11 12 31 11 25 48 -0.43 -153 0 0 10 49 13 4 26 36.9 64 180 -9 10 45 42 10 52 45 10 42 36 10 55 51 -0.43 -152 0 0 10 19 38 4 26 44.9 65 182 -10 10 16 7 10 23 8 10 13 1 10 26 14 -0.43 -151 0 0 9 50 23 4 26 52.8 65 185 -11 9 46 53 9 53 53 9 43 48 9 56 59 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220 -24 3 41 24 3 48 8 3 38 25 3 51 7 -0.44 -136 0 0 3 22 9 4 28 51.9 65 223 -25 3 18 47 3 25 31 3 15 50 3 28 29 -0.44 -135 0 0 3 0 3 4 28 59.6 64 225 -26 2 56 41 3 3 24 2 53 44 3 6 21 -0.44 -134 0 0 2 38 27 4 29 7.3 64 227 -27 2 35 6 2 41 48 2 32 9 2 44 45 -0.44 -133 0 0 2 17 22 4 29 14.9 63 229 -28 2 14 2 2 20 42 2 11 6 2 23 39 -0.44 -132 0 0 1 56 49 4 29 22.4 63 231 -29 1 53 29 2 0 8 1 50 33 2 3 4 -0.44 -131 0 0 1 36 47 4 29 29.9 62 232 -30 1 33 28 1 40 6 1 30 32 1 43 2 -0.44 -130 0 0 1 17 17 4 29 37.4 61 234 -31 1 13 58 1 20 36 1 11 3 1 23 31 -0.44 -129 0 0 0 58 19 4 29 44.8 61 236 -32 0 55 1 1 1 37 0 52 6 1 4 32 -0.44 -128 0 0 0 39 53 4 29 52.1 60 237 -33 0 36 36 0 43 11 0 33 42 0 46 5 -0.44 -127 0 0 0 22 0 4 29 59.3 59 239 -34 0 18 43 0 25 17 0 15 49 0 28 11 -0.44 -126 0 0 0 4 39 4 30 6.5 59 240 -35 0 1 23 0 7 56 - 0 1 30 0 10 50 -0.44 -125 0 0 - 0 12 9 4 30 13.5 58 241 -36 - 0 15 25 - 0 8 52 - 0 18 18 - 0 5 59 -0.44 -124 0 0 - 0 28 24 4 30 20.6 57 242 -37 - 0 31 39 - 0 25 8 - 0 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2 56 54 - 3 6 6 - 2 54 5 -0.44 -111 0 0 - 3 9 6 4 31 43.8 46 251 -49 - 3 12 17 - 3 5 55 - 3 15 6 - 3 3 6 -0.44 -110 0 0 - 3 17 33 4 31 49.5 45 252 -50 - 3 20 44 - 3 14 22 - 3 23 32 - 3 11 34 -0.44 -109 0 0 - 3 25 26 4 31 55.2 44 252 -51 - 3 28 37 - 3 22 16 - 3 31 25 - 3 19 28 -0.44 -108 0 0 - 3 32 46 4 32 0.7 43 253 -52 - 3 35 57 - 3 29 36 - 3 38 44 - 3 26 48 -0.44 -107 0 0 - 3 39 32 4 32 6.1 42 253 -52 - 3 42 42 - 3 36 22 - 3 45 30 - 3 33 34 -0.44 -106 0 0 - 3 45 45 4 32 11.4 41 253 -53 - 3 48 55 - 3 42 35 - 3 51 42 - 3 39 47 -0.44 -105 0 0 - 3 51 24 4 32 16.7 40 253 -54 - 3 54 34 - 3 48 14 - 3 57 21 - 3 45 27 -0.44 -104 0 0 - 3 56 29 4 32 21.8 39 254 -55 - 3 59 39 - 3 53 20 - 4 2 26 - 3 50 32 -0.44 -103 0 0 - 4 1 1 4 32 26.8 38 254 -56 - 4 4 11 - 3 57 52 - 4 6 58 - 3 55 5 -0.44 -102 0 0 - 4 5 0 4 32 31.6 37 254 -57 - 4 8 9 - 4 1 51 - 4 10 56 - 3 59 3 -0.44 -101 0 0 - 4 8 25 4 32 36.4 36 254 -58 - 4 11 34 - 4 5 16 - 4 14 21 - 4 2 29 -0.44 -100 0 0 - 4 11 17 4 32 41.1 35 254 -59 - 4 14 26 - 4 8 8 - 4 17 13 - 4 5 21 -0.44 - 99 0 0 - 4 13 35 4 32 45.6 34 255 -60 - 4 16 44 - 4 10 26 - 4 19 31 - 4 7 39 -0.44 - 98 0 0 - 4 15 20 4 32 50.1 33 255 -61 - 4 18 29 - 4 12 11 - 4 21 16 - 4 9 25 -0.44 - 97 0 0 - 4 16 32 4 32 54.4 32 255 -61 - 4 19 41 - 4 13 23 - 4 22 28 - 4 10 36 -0.44 - 96 0 0 - 4 17 11 4 32 58.6 31 255 -62 - 4 20 20 - 4 14 2 - 4 23 6 - 4 11 15 -0.44 - 95 0 0 - 4 17 16 4 33 2.7 31 255 -63 - 4 20 25 - 4 14 7 - 4 23 12 - 4 11 21 -0.44 - 94 0 0 - 4 16 49 4 33 6.6 30 255 -64 - 4 19 58 - 4 13 40 - 4 22 44 - 4 10 53 -0.44 - 93 0 0 - 4 15 48 4 33 10.5 29 255 -65 - 4 18 57 - 4 12 39 - 4 21 43 - 4 9 52 -0.44 - 92 0 0 - 4 14 14 4 33 14.2 28 255 -66 - 4 17 23 - 4 11 5 - 4 20 10 - 4 8 19 -0.44 - 91 0 0 - 4 12 8 4 33 17.8 27 255 -67 - 4 15 17 - 4 8 59 - 4 18 3 - 4 6 12 -0.44 - 90 0 0 - 4 9 28 4 33 21.3 26 255 -68 - 4 12 37 - 4 6 19 - 4 15 24 - 4 3 32 -0.44 - 89 0 0 - 4 6 16 4 33 24.6 25 255 -68 - 4 9 25 - 4 3 7 - 4 12 11 - 4 0 20 -0.44 - 88 0 0 - 4 2 30 4 33 27.9 24 255 -69 - 4 5 40 - 3 59 21 - 4 8 26 - 3 56 34 -0.44 - 87 0 0 - 3 58 13 4 33 31.0 23 255 -70 - 4 1 22 - 3 55 3 - 4 4 9 - 3 52 16 -0.44 - 86 0 0 - 3 53 22 4 33 34.0 22 255 -71 - 3 56 31 - 3 50 12 - 3 59 18 - 3 47 25 -0.44 - 85 0 0 - 3 47 59 4 33 36.8 21 255 -72 - 3 51 8 - 3 44 49 - 3 53 55 - 3 42 2 -0.44 - 84 0 0 - 3 42 3 4 33 39.5 20 255 -72 - 3 45 13 - 3 38 53 - 3 48 0 - 3 36 6 -0.44 - 83 0 0 - 3 35 35 4 33 42.1 19 255 -73 - 3 38 45 - 3 32 25 - 3 41 32 - 3 29 37 -0.44 - 82 0 0 - 3 28 34 4 33 44.6 18 255 -74 - 3 31 44 - 3 25 24 - 3 34 32 - 3 22 36 -0.44 - 81 0 0 - 3 21 1 4 33 46.9 17 255 -74 - 3 24 11 - 3 17 51 - 3 26 59 - 3 15 3 -0.44 - 80 0 0 - 3 12 56 4 33 49.1 16 255 -75 - 3 16 7 - 3 9 46 - 3 18 54 - 3 6 58 -0.44 - 79 0 0 - 3 4 19 4 33 51.2 15 255 -76 - 3 7 30 - 3 1 8 - 3 10 18 - 2 58 20 -0.44 - 78 0 0 - 2 55 9 4 33 53.1 14 255 -76 - 2 58 20 - 2 51 59 - 3 1 9 - 2 49 10 -0.44 - 77 0 0 - 2 45 28 4 33 54.9 13 255 -77 - 2 48 39 - 2 42 17 - 2 51 28 - 2 39 28 -0.44 - 76 0 0 - 2 35 15 4 33 56.6 12 255 -77 - 2 38 26 - 2 32 3 - 2 41 15 - 2 29 15 -0.44 - 75 0 0 - 2 24 30 4 33 58.1 11 255 -78 - 2 27 42 - 2 21 18 - 2 30 31 - 2 18 29 -0.44 - 74 0 0 - 2 13 13 4 33 59.5 10 255 -78 - 2 16 25 - 2 10 1 - 2 19 14 - 2 7 12 -0.44 - 73 0 0 - 2 1 25 4 34 0.8 8 255 -79 - 2 4 37 - 1 58 13 - 2 7 27 - 1 55 23 -0.45 - 72 0 0 - 1 49 6 4 34 1.9 7 255 -79 - 1 52 18 - 1 45 53 - 1 55 8 - 1 43 3 -0.45 - 71 0 0 - 1 36 15 4 34 2.8 6 255 -79 - 1 39 28 - 1 33 2 - 1 42 18 - 1 30 12 -0.45 - 70 0 0 - 1 22 53 4 34 3.7 5 255 -79 - 1 26 6 - 1 19 39 - 1 28 56 - 1 16 49 -0.45 - 69 0 0 - 1 9 0 4 34 4.4 4 255 -79 - 1 12 13 - 1 5 46 - 1 15 4 - 1 2 55 -0.46 - 68 0 0 - 0 54 36 4 34 4.9 3 255 -79 - 0 57 50 - 0 51 22 - 1 0 41 - 0 48 31 -0.47 - 67 0 0 - 0 39 41 4 34 5.3 2 255 -79 - 0 42 56 - 0 36 27 - 0 45 47 - 0 33 36 -0.48 - 66 0 0 - 0 24 16 4 34 5.6 1 255 -78 - 0 27 31 - 0 21 2 - 0 30 22 - 0 18 10 -0.53 - 65 0 0 - 0 8 21 4 34 5.7 0 255 -78 - 0 11 36 - 0 5 6 - 0 14 28 - 0 2 14 -0.92 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6313-01983-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 58 18.5420 DE: -15 09 55.242 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 58 18.5418 DE: -15 09 55.243 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3895) Earhart asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.47130 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2023 Apr 24 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): 0.012", 0.001", 102.269° remarks: * orbital elements for (3895)Earhart : Mean anomaly = 150.3601530457 deg Arg. of pericenter = 9.2133163788 deg Long. of node = 150.7622034206 deg Inclination = 24.3656000455 deg Eccentricity = 0.1821431200 Semimajor axis = 2.3506084801 AU Perihelion dist = 1.9224613177 AU Mag: H = 12.05, G = 0.15 Epoch of elements : MJD 60600.18598812 TDT (2024 Oct 17.1860) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr24,0.69,2024,10,17,4.463720,0.160041,0.365319,8.035535,-3.507705,0.005611,0.001096,0.000000,0.000000 -153.2016,-15.0987,109.37,-9.42,False TYC 6313-01983-1,19.97181724,-15.1653450,12.26,11.85,11.63,0.0,0,,19.99514138,-15.0987128,5.40,5.17,0,0,0 3895,Earhart,17.24,10.647,2.4713,0,0,1.975,-12.48,,0.8,0 0,150.3093,2024,10,17,9.2133,150.7622,24.3656,0.18214,2.35061,1.92246,12.05,5.0,0.15 1.441,0.0117,0.0013,102,0.0026,Known errors,1.34,0,-1,-1 20241017_1983-1,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org