IOTA/IOTA-ES occultation update for 2011 AM24 / UCAC4 586-128201 event on 2024 Jul 17, 07:02 UT Visible from Summary ------- On 2024 Jul 17 UT, the 0.260054526065716 km diameter asteroid 2011 AM24 will occult a 10.4 mag star in the constellation Pegasus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.06 mag to 16.44 mag (the magnitude of the asteroid) for at most 0.050 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: 2 * date and approx. time of event: 2024 Jul 17, 06:41 - 2024 Jul 17, 07:23 * geocentric midpoint of event [JD]: 2460508.79312929 * magnitude of target star: 10.38 * magnitude drop [mag]: 6.06 * estimated maximum duration [s]: 0.050 * Moon: 80 % sunlit, 109° distance * Sun: 117° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 0 * 1 sigma uncertainty interval [path widths]: +/- 26.88 * 1 sigma uncertainty interval [seconds]: +/- 8.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.991, +/- 0.292) * 1 sigma uncertainty ellipse (major, minor, PA): (1.018", 0.174", 103°) * approx speed of asteroid's shadow [km/s]: 5.0101 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 586-128201 by 0 2011 AM24 on 2024 Jul 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 -161 0 0 26 24 3 6 41 29.7 0 60 -13 26 23 58 26 24 8 26 19 17 26 28 49 .... -160 0 0 26 55 44 6 41 30.1 1 60 -14 26 55 38 26 55 49 26 50 58 27 0 29 -0.30 -159 0 0 27 27 4 6 41 30.9 2 61 -14 27 26 58 27 27 9 27 22 19 27 31 48 -0.30 -158 0 0 27 58 2 6 41 32.1 3 61 -15 27 57 57 27 58 7 27 53 18 28 2 46 -0.29 -157 0 0 28 28 38 6 41 33.7 4 61 -15 28 28 33 28 28 43 28 23 55 28 33 22 -0.29 -156 0 0 28 58 52 6 41 35.7 5 62 -16 28 58 46 28 58 57 28 54 9 29 3 35 -0.29 -155 0 0 29 28 41 6 41 38.1 6 62 -16 29 28 36 29 28 46 29 23 59 29 33 24 -0.29 -154 0 0 29 58 7 6 41 40.9 7 63 -16 29 58 2 29 58 12 29 53 25 30 2 49 -0.29 -153 0 0 30 27 8 6 41 44.1 8 63 -17 30 27 2 30 27 13 30 22 27 30 31 49 -0.28 -152 0 0 30 55 43 6 41 47.7 9 64 -17 30 55 38 30 55 48 30 51 3 31 0 23 -0.28 -151 0 0 31 23 53 6 41 51.6 10 64 -18 31 23 48 31 23 58 31 19 13 31 28 32 -0.28 -150 0 0 31 51 36 6 41 55.9 11 65 -18 31 51 31 31 51 41 31 46 57 31 56 15 -0.28 -149 0 0 32 18 52 6 42 0.5 12 66 -18 32 18 47 32 18 58 32 14 15 32 23 31 -0.28 -148 0 0 32 45 42 6 42 5.5 13 66 -19 32 45 37 32 45 47 32 41 5 32 50 19 -0.28 -147 0 0 33 12 4 6 42 10.8 14 67 -19 33 11 59 33 12 9 33 7 27 33 16 40 -0.28 -146 0 0 33 37 58 6 42 16.4 15 67 -19 33 37 53 33 38 3 33 33 22 33 42 33 -0.28 -145 0 0 34 3 23 6 42 22.3 16 68 -20 34 3 18 34 3 28 33 58 48 34 7 58 -0.28 -144 0 0 34 28 20 6 42 28.5 17 68 -20 34 28 15 34 28 25 34 23 47 34 32 54 -0.28 -143 0 0 34 52 49 6 42 35.0 18 69 -20 34 52 44 34 52 54 34 48 16 34 57 22 -0.28 -142 0 0 35 16 48 6 42 41.8 19 70 -21 35 16 43 35 16 53 35 12 16 35 21 21 -0.28 -141 0 0 35 40 19 6 42 48.9 20 70 -21 35 40 14 35 40 23 35 35 47 35 44 50 -0.27 -140 0 0 36 3 20 6 42 56.3 21 71 -21 36 3 15 36 3 24 35 58 49 36 7 50 -0.27 -139 0 0 36 25 51 6 43 3.9 22 72 -21 36 25 46 36 25 56 36 21 21 36 30 21 -0.27 -138 0 0 36 47 53 6 43 11.8 23 72 -22 36 47 48 36 47 58 36 43 24 36 52 22 -0.27 -137 0 0 37 9 25 6 43 19.9 24 73 -22 37 9 20 37 9 30 37 4 57 37 13 53 -0.27 -136 0 0 37 30 27 6 43 28.2 24 74 -22 37 30 23 37 30 32 37 26 1 37 34 54 -0.27 -135 0 0 37 51 0 6 43 36.8 25 74 -22 37 50 55 37 51 5 37 46 34 37 55 26 -0.27 -134 0 0 38 11 3 6 43 45.6 26 75 -23 38 10 58 38 11 8 38 6 38 38 15 28 -0.27 -133 0 0 38 30 36 6 43 54.6 27 76 -23 38 30 31 38 30 41 38 26 12 38 35 0 -0.27 -132 0 0 38 49 39 6 44 3.9 28 76 -23 38 49 34 38 49 44 38 45 15 38 54 2 -0.27 -131 0 0 39 8 12 6 44 13.3 29 77 -23 39 8 7 39 8 17 39 3 50 39 12 35 -0.27 -130 0 0 39 26 15 6 44 22.9 30 78 -23 39 26 11 39 26 20 39 21 54 39 30 37 -0.27 -129 0 0 39 43 49 6 44 32.7 30 78 -23 39 43 44 39 43 54 39 39 28 39 48 10 -0.26 -128 0 0 40 0 53 6 44 42.7 31 79 -24 40 0 48 40 0 58 39 56 33 40 5 13 -0.26 -127 0 0 40 17 28 6 44 52.9 32 80 -24 40 17 23 40 17 32 40 13 8 40 21 47 -0.26 -126 0 0 40 33 32 6 45 3.3 33 81 -24 40 33 28 40 33 37 40 29 14 40 37 51 -0.26 -125 0 0 40 49 8 6 45 13.8 34 81 -24 40 49 3 40 49 12 40 44 50 40 53 25 -0.26 -124 0 0 41 4 14 6 45 24.5 35 82 -24 41 4 9 41 4 19 40 59 57 41 8 31 -0.26 -123 0 0 41 18 51 6 45 35.3 35 83 -24 41 18 46 41 18 55 41 14 35 41 23 7 -0.26 -122 0 0 41 32 58 6 45 46.3 36 84 -24 41 32 54 41 33 3 41 28 43 41 37 14 -0.26 -121 0 0 41 46 37 6 45 57.5 37 85 -24 41 46 33 41 46 42 41 42 23 41 50 52 -0.26 -120 0 0 41 59 47 6 46 8.8 38 85 -24 41 59 42 41 59 52 41 55 33 42 4 1 -0.26 -119 0 0 42 12 28 6 46 20.2 39 86 -24 42 12 23 42 12 33 42 8 15 42 16 41 -0.26 -118 0 0 42 24 40 6 46 31.8 39 87 -25 42 24 36 42 24 45 42 20 28 42 28 53 -0.26 -117 0 0 42 36 24 6 46 43.5 40 88 -25 42 36 20 42 36 29 42 32 13 42 40 36 -0.26 -116 0 0 42 47 40 6 46 55.3 41 89 -25 42 47 35 42 47 44 42 43 29 42 51 51 -0.25 -115 0 0 42 58 27 6 47 7.3 42 90 -25 42 58 22 42 58 32 42 54 17 43 2 38 -0.25 -114 0 0 43 8 46 6 47 19.4 43 91 -25 43 8 42 43 8 51 43 4 36 43 12 56 -0.25 -113 0 0 43 18 37 6 47 31.7 43 91 -25 43 18 33 43 18 42 43 14 28 43 22 46 -0.25 -112 0 0 43 28 0 6 47 44.0 44 92 -25 43 27 56 43 28 5 43 23 51 43 32 9 -0.25 -111 0 0 43 36 56 6 47 56.5 45 93 -25 43 36 51 43 37 0 43 32 47 43 41 4 -0.25 -110 0 0 43 45 23 6 48 9.1 46 94 -25 43 45 19 43 45 28 43 41 16 43 49 31 -0.25 -109 0 0 43 53 23 6 48 21.8 46 95 -25 43 53 19 43 53 28 43 49 16 43 57 31 -0.25 -108 0 0 44 0 56 6 48 34.6 47 96 -25 44 0 51 44 1 0 43 56 49 44 5 3 -0.25 -107 0 0 44 8 1 6 48 47.5 48 97 -25 44 7 57 44 8 6 44 3 55 44 12 8 -0.25 -106 0 0 44 14 39 6 49 0.6 48 98 -25 44 14 35 44 14 44 44 10 33 44 18 45 -0.25 -105 0 0 44 20 50 6 49 13.8 49 99 -25 44 20 45 44 20 54 44 16 44 44 24 55 -0.25 -104 0 0 44 26 34 6 49 27.0 50 100 -25 44 26 29 44 26 38 44 22 28 44 30 39 -0.25 -103 0 0 44 31 50 6 49 40.4 51 101 -24 44 31 46 44 31 55 44 27 45 44 35 55 -0.25 -102 0 0 44 36 40 6 49 53.9 51 102 -24 44 36 35 44 36 44 44 32 35 44 40 44 -0.25 -101 0 0 44 41 3 6 50 7.5 52 103 -24 44 40 58 44 41 7 44 36 58 44 45 7 -0.25 -100 0 0 44 44 58 6 50 21.3 53 104 -24 44 44 54 44 45 3 44 40 54 44 49 2 -0.25 - 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73 0 0 43 40 53 6 57 15.3 71 145 -20 43 40 48 43 40 57 43 36 45 43 45 0 -0.24 - 72 0 0 43 32 0 6 57 32.4 71 147 -20 43 31 56 43 32 5 43 27 52 43 36 8 -0.24 - 71 0 0 43 22 39 6 57 49.7 72 149 -19 43 22 34 43 22 43 43 18 30 43 26 47 -0.24 - 70 0 0 43 12 47 6 58 7.1 72 152 -19 43 12 43 43 12 52 43 8 38 43 16 57 -0.24 - 69 0 0 43 2 26 6 58 24.6 73 155 -19 43 2 22 43 2 31 42 58 17 43 6 36 -0.24 - 68 0 0 42 51 35 6 58 42.3 73 158 -18 42 51 31 42 51 40 42 47 25 42 55 46 -0.24 - 67 0 0 42 40 14 6 59 0.1 74 161 -18 42 40 9 42 40 18 42 36 3 42 44 25 -0.24 - 66 0 0 42 28 22 6 59 18.1 74 164 -18 42 28 17 42 28 26 42 24 10 42 32 34 -0.24 - 65 0 0 42 15 59 6 59 36.2 74 167 -18 42 15 55 42 16 4 42 11 47 42 20 12 -0.24 - 64 0 0 42 3 5 6 59 54.4 75 171 -17 42 3 1 42 3 10 41 58 52 42 7 19 -0.24 - 63 0 0 41 49 40 7 0 12.8 75 174 -17 41 49 36 41 49 45 41 45 27 41 53 54 -0.25 - 62 0 0 41 35 44 7 0 31.4 75 178 -17 41 35 39 41 35 49 41 31 29 41 39 59 -0.25 - 61 0 0 41 21 16 7 0 50.1 76 182 -16 41 21 11 41 21 20 41 17 0 41 25 31 -0.25 - 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47 0 0 37 0 48 7 5 27.3 73 238 -10 37 0 43 37 0 53 36 56 19 37 5 17 -0.25 - 46 0 0 36 37 55 7 5 48.1 73 242 -10 36 37 50 36 38 0 36 33 25 36 42 25 -0.25 - 45 0 0 36 14 28 7 6 9.0 72 245 -10 36 14 23 36 14 32 36 9 57 36 18 59 -0.25 - 44 0 0 35 50 25 7 6 30.1 72 248 -9 35 50 20 35 50 30 35 45 53 35 54 57 -0.25 - 43 0 0 35 25 48 7 6 51.2 71 250 -9 35 25 43 35 25 52 35 21 14 35 30 21 -0.25 - 42 0 0 35 0 35 7 7 12.5 70 253 -8 35 0 30 35 0 40 34 56 1 35 5 9 -0.25 - 41 0 0 34 34 47 7 7 33.8 69 255 -7 34 34 42 34 34 52 34 30 12 34 39 23 -0.25 - 40 0 0 34 8 25 7 7 55.2 69 258 -7 34 8 20 34 8 30 34 3 49 34 13 2 -0.25 - 39 0 0 33 41 28 7 8 16.7 68 260 -6 33 41 23 33 41 33 33 36 50 33 46 6 -0.26 - 38 0 0 33 13 56 7 8 38.2 67 262 -6 33 13 51 33 14 1 33 9 18 33 18 35 -0.26 - 37 0 0 32 45 50 7 8 59.8 66 264 -5 32 45 45 32 45 55 32 41 10 32 50 30 -0.26 - 36 0 0 32 17 10 7 9 21.4 65 266 -5 32 17 5 32 17 15 32 12 29 32 21 51 -0.26 - 35 0 0 31 47 56 7 9 43.1 64 267 -4 31 47 51 31 48 1 31 43 14 31 52 38 -0.26 - 34 0 0 31 18 8 7 10 4.8 64 269 -4 31 18 3 31 18 13 31 13 26 31 22 51 -0.26 - 33 0 0 30 47 48 7 10 26.5 63 270 -3 30 47 43 30 47 53 30 43 4 30 52 32 -0.26 - 32 0 0 30 16 55 7 10 48.1 62 272 -2 30 16 50 30 17 0 30 12 10 30 21 40 -0.26 - 31 0 0 29 45 30 7 11 9.8 61 273 -2 29 45 24 29 45 35 29 40 44 29 50 15 -0.26 - 30 0 0 29 13 33 7 11 31.4 60 275 -1 29 13 28 29 13 38 29 8 46 29 18 20 -0.26 - 29 0 0 28 41 5 7 11 53.0 59 276 0 28 41 0 28 41 11 28 36 18 28 45 53 -0.27 - 28 0 0 28 8 8 7 12 14.5 58 277 0 28 8 3 28 8 13 28 3 19 28 12 56 -0.27 - 27 0 0 27 34 41 7 12 35.9 57 278 1 27 34 36 27 34 46 27 29 52 27 39 30 -0.27 - 26 0 0 27 0 45 7 12 57.2 56 279 2 27 0 40 27 0 51 26 55 55 27 5 36 -0.27 - 25 0 0 26 26 22 7 13 18.4 55 281 2 26 26 17 26 26 28 26 21 31 26 31 13 -0.27 - 24 0 0 25 51 32 7 13 39.5 54 282 3 25 51 27 25 51 38 25 46 41 25 56 24 -0.27 - 23 0 0 25 16 17 7 14 0.4 52 282 4 25 16 12 25 16 22 25 11 25 25 21 9 -0.27 - 22 0 0 24 40 37 7 14 21.1 51 283 4 24 40 32 24 40 42 24 35 44 24 45 30 -0.27 - 21 0 0 24 4 33 7 14 41.6 50 284 5 24 4 28 24 4 39 23 59 40 24 9 27 -0.28 - 20 0 0 23 28 8 7 15 1.9 49 285 6 23 28 2 23 28 13 23 23 13 23 33 2 -0.28 - 19 0 0 22 51 21 7 15 22.0 48 286 7 22 51 15 22 51 26 22 46 26 22 56 16 -0.28 - 18 0 0 22 14 14 7 15 41.8 47 287 7 22 14 9 22 14 20 22 9 19 22 19 10 -0.28 - 17 0 0 21 36 49 7 16 1.4 46 287 8 21 36 44 21 36 55 21 31 54 21 41 45 -0.28 - 16 0 0 20 59 8 7 16 20.6 45 288 9 20 59 2 20 59 13 20 54 12 21 4 4 -0.28 - 15 0 0 20 21 10 7 16 39.6 43 289 9 20 21 5 20 21 15 20 16 14 20 26 6 -0.28 - 14 0 0 19 42 59 7 16 58.2 42 289 10 19 42 53 19 43 4 19 38 2 19 47 55 -0.28 - 13 0 0 19 4 35 7 17 16.5 41 290 11 19 4 29 19 4 40 18 59 38 19 9 31 -0.29 - 12 0 0 18 25 59 7 17 34.4 40 290 12 18 25 54 18 26 5 18 21 3 18 30 56 -0.29 - 11 0 0 17 47 15 7 17 51.9 39 291 12 17 47 9 17 47 20 17 42 18 17 52 12 -0.29 - 10 0 0 17 8 22 7 18 9.0 38 291 13 17 8 17 17 8 28 17 3 25 17 13 19 -0.29 - 9 0 0 16 29 23 7 18 25.7 36 292 14 16 29 18 16 29 29 16 24 27 16 34 20 -0.29 - 8 0 0 15 50 20 7 18 42.0 35 292 15 15 50 14 15 50 25 15 45 23 15 55 17 -0.29 - 7 0 0 15 11 13 7 18 57.8 34 293 16 15 11 8 15 11 19 15 6 17 15 16 10 -0.29 - 6 0 0 14 32 5 7 19 13.1 33 293 16 14 31 59 14 32 10 14 27 8 14 37 1 -0.29 - 5 0 0 13 52 57 7 19 28.0 32 294 17 13 52 51 13 53 2 13 48 0 13 57 53 -0.29 - 4 0 0 13 13 50 7 19 42.3 30 294 18 13 13 45 13 13 55 13 8 54 13 18 46 -0.30 - 3 0 0 12 34 47 7 19 56.2 29 294 19 12 34 41 12 34 52 12 29 51 12 39 42 -0.30 - 2 0 0 11 55 48 7 20 9.6 28 295 19 11 55 42 11 55 53 11 50 53 12 0 43 -0.30 - 1 0 0 11 16 55 7 20 22.4 27 295 20 11 16 50 11 17 1 11 12 1 11 21 50 -0.30 0 0 0 10 38 11 7 20 34.7 26 295 21 10 38 5 10 38 16 10 33 16 10 43 5 -0.30 1 0 0 9 59 35 7 20 46.4 24 295 22 9 59 30 9 59 40 9 54 41 10 4 29 -0.30 2 0 0 9 21 10 7 20 57.6 23 296 23 9 21 5 9 21 15 9 16 17 9 26 3 -0.30 3 0 0 8 42 57 7 21 8.3 22 296 23 8 42 52 8 43 2 8 38 5 8 47 50 -0.30 4 0 0 8 4 57 7 21 18.4 21 296 24 8 4 52 8 5 3 8 0 5 8 9 50 -0.30 5 0 0 7 27 12 7 21 27.9 20 296 25 7 27 7 7 27 18 7 22 21 7 32 4 -0.31 6 0 0 6 49 43 7 21 36.8 18 296 26 6 49 38 6 49 48 6 44 53 6 54 34 -0.31 7 0 0 6 12 31 7 21 45.2 17 297 26 6 12 26 6 12 36 6 7 41 6 17 21 -0.31 8 0 0 5 35 37 7 21 53.0 16 297 27 5 35 32 5 35 42 5 30 48 5 40 26 -0.31 9 0 0 4 59 2 7 22 0.3 15 297 28 4 58 57 4 59 8 4 54 14 5 3 51 -0.31 10 0 0 4 22 48 7 22 7.0 14 297 29 4 22 43 4 22 53 4 18 1 4 27 36 -0.31 11 0 0 3 46 55 7 22 13.1 12 297 29 3 46 50 3 47 0 3 42 8 3 51 42 -0.32 12 0 0 3 11 24 7 22 18.6 11 297 30 3 11 19 3 11 30 3 6 39 3 16 10 -0.32 13 0 0 2 36 17 7 22 23.6 10 297 31 2 36 12 2 36 22 2 31 32 2 41 2 -0.32 14 0 0 2 1 34 7 22 28.0 9 297 31 2 1 28 2 1 39 1 56 49 2 6 18 -0.33 15 0 0 1 27 15 7 22 31.9 8 297 32 1 27 10 1 27 20 1 22 32 1 31 58 -0.33 16 0 0 0 53 22 7 22 35.2 7 297 33 0 53 17 0 53 27 0 48 39 0 58 4 -0.34 17 0 0 0 19 55 7 22 38.0 5 297 34 0 19 50 0 20 0 0 15 13 0 24 36 -0.35 18 0 0 - 0 13 5 7 22 40.2 4 297 34 - 0 13 10 - 0 13 0 - 0 17 46 - 0 8 25 -0.36 19 0 0 - 0 45 38 7 22 41.9 3 297 35 - 0 45 43 - 0 45 33 - 0 50 17 - 0 40 58 -0.39 20 0 0 - 1 17 42 7 22 43.1 2 297 35 - 1 17 47 - 1 17 37 - 1 22 21 - 1 13 4 -0.44 21 0 0 - 1 49 18 7 22 43.8 1 297 36 - 1 49 23 - 1 49 13 - 1 53 56 - 1 44 40 -0.64 Uncertainty in time = +/- 8 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 586-128201 * constellation : Pegasus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 35 49.0350 DE: +27 00 52.643 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 35 49.0350 DE: +27 00 52.643 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.4 * B mag [mag]: 10.9 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: 2011 AM24 asteroid class: approx. diameter [km]: 0 approx. diameter ["]: 0.007 distance from Earth [AU]: 0.05440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#93 date of fit: 2023 Mar 01 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): 1.018", 0.174", 103.481° remarks: * orbital elements for 2011 AM24 : Mean anomaly = 325.9802524891 deg Arg. of pericenter = 215.0002849161 deg Long. of node = 127.1663701611 deg Inclination = 9.1423610141 deg Eccentricity = 0.1499972942 Semimajor axis = 1.1784446956 AU Perihelion dist = 1.0016811799 AU Mag: H = 20.51, G = 0.15 Epoch of elements : MJD 60508.29308921 TDT (2024 Jul 17.2931) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#932023Mar01,0.05,2024,7,17,7.035103,0.064919,0.225402,2.717372,-0.782586,-0.000234,-0.000258,0.000000,0.000000 -61.8792,27.1402,76.03,21.09,False UCAC4 586-128201,22.59695412,27.0146225,10.89,10.38,10.10,0.1,0,,22.61643162,27.1402190,6.06,5.89,0,0,0 0,2011 AM24,16.44,0.264,0.0544,0,0,32.962,-126.96,,0.0,0 0,325.7544,2024,7,17,215.0003,127.1664,9.1424,0.15000,1.17844,1.00168,20.51,5.0,0.15 28.038,1.0183,0.1740,103,0.1798,Known errors,0.99,0,-1,-1 20240717_128201,60140.20 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 04:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org