IOTA/IOTA-ES occultation update for (1471) Tornio / UCAC4 527-000772 event on 2024 Jan 29, 12:10 UT Visible from Summary ------- On 2024 Jan 29 UT, the 33.972 km diameter asteroid (1471) Tornio will occult a 11.5 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.72 mag to 16.22 mag (the magnitude of the asteroid) for at most 1.060 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: 99 * date and approx. time of event: 2024 Jan 29, 12:07 - 2024 Jan 29, 12:14 * geocentric midpoint of event [JD]: 2460339.00754521 * magnitude of target star: 11.51 * magnitude drop [mag]: 4.72 * estimated maximum duration [s]: 1.060 * Moon: 88 % sunlit, 154° distance * Sun: 64° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 35 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.002", 57°) * approx speed of asteroid's shadow [km/s]: 31.9439 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 527-000772 by 1471 Tornio on 2024 Jan 29 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 - 25 0 0 .. .. .... .. .. .. .. .. .. .. .. .. -29 2 7 .. .. .. -28 58 4 .... - 24 0 0 -28 54 58 12 7 36.0 1 72 64 -29 4 49 -28 45 8 -29 8 53 -28 41 4 .... - 23 0 0 -28 37 37 12 7 36.1 2 71 65 -28 47 29 -28 27 46 -28 51 34 -28 23 42 0.08 - 22 0 0 -28 19 55 12 7 36.2 3 71 66 -28 29 48 -28 10 3 -28 33 53 -28 5 58 0.11 - 21 0 0 -28 1 52 12 7 36.4 4 70 67 -28 11 46 -27 51 58 -28 15 51 -27 47 53 0.13 - 20 0 0 -27 43 27 12 7 36.7 5 70 68 -27 53 22 -27 33 32 -27 57 28 -27 29 27 0.14 - 19 0 0 -27 24 41 12 7 36.9 6 69 69 -27 34 37 -27 14 45 -27 38 43 -27 10 39 0.15 - 18 0 0 -27 5 33 12 7 37.3 6 69 70 -27 15 30 -26 55 37 -27 19 37 -26 51 30 0.16 - 17 0 0 -26 46 5 12 7 37.7 7 69 71 -26 56 3 -26 36 7 -27 0 10 -26 32 0 0.16 - 16 0 0 -26 26 16 12 7 38.2 8 68 72 -26 36 15 -26 16 17 -26 40 23 -26 12 10 0.16 - 15 0 0 -26 6 6 12 7 38.7 9 68 73 -26 16 7 -25 56 7 -26 20 15 -25 51 59 0.16 - 14 0 0 -25 45 36 12 7 39.3 10 67 74 -25 55 38 -25 35 36 -25 59 46 -25 31 27 0.17 - 13 0 0 -25 24 46 12 7 39.9 11 67 75 -25 34 49 -25 14 45 -25 38 58 -25 10 36 0.17 - 12 0 0 -25 3 36 12 7 40.6 12 66 76 -25 13 40 -24 53 34 -25 17 49 -24 49 24 0.17 - 11 0 0 -24 42 7 12 7 41.4 13 66 77 -24 52 11 -24 32 3 -24 56 21 -24 27 53 0.17 - 10 0 0 -24 20 18 12 7 42.2 14 66 78 -24 30 23 -24 10 13 -24 34 33 -24 6 3 0.17 - 9 0 0 -23 58 10 12 7 43.1 15 65 79 -24 8 16 -23 48 4 -24 12 27 -23 43 54 0.17 - 8 0 0 -23 35 43 12 7 44.0 16 65 80 -23 45 50 -23 25 36 -23 50 1 -23 21 25 0.17 - 7 0 0 -23 12 57 12 7 45.1 17 64 81 -23 23 6 -23 2 50 -23 27 17 -22 58 39 0.17 - 6 0 0 -22 49 54 12 7 46.1 18 64 81 -23 0 3 -22 39 45 -23 4 15 -22 35 34 0.17 - 5 0 0 -22 26 33 12 7 47.3 19 63 82 -22 36 43 -22 16 23 -22 40 55 -22 12 11 0.17 - 4 0 0 -22 2 54 12 7 48.5 20 63 83 -22 13 5 -21 52 44 -22 17 17 -21 48 31 0.18 - 3 0 0 -21 38 58 12 7 49.8 21 63 84 -21 49 10 -21 28 47 -21 53 23 -21 24 34 0.18 - 2 0 0 -21 14 46 12 7 51.1 22 62 85 -21 24 59 -21 4 34 -21 29 12 -21 0 21 0.18 - 1 0 0 -20 50 18 12 7 52.5 23 62 86 -21 0 31 -20 40 5 -21 4 45 -20 35 51 0.18 - 0 0 0 -20 25 33 12 7 54.0 24 61 87 -20 35 48 -20 15 20 -20 40 2 -20 11 6 0.18 1 0 0 -20 0 34 12 7 55.5 25 61 88 -20 10 49 -19 50 20 -20 15 3 -19 46 6 0.18 2 0 0 -19 35 20 12 7 57.1 26 61 88 -19 45 36 -19 25 5 -19 49 50 -19 20 50 0.18 3 0 0 -19 9 51 12 7 58.8 27 60 88 -19 20 8 -18 59 36 -19 24 23 -18 55 21 0.18 4 0 0 -18 44 9 12 8 0.5 28 60 87 -18 54 26 -18 33 53 -18 58 41 -18 29 38 0.18 5 0 0 -18 18 14 12 8 2.3 29 60 86 -18 28 32 -18 7 57 -18 32 47 -18 3 42 0.18 6 0 0 -17 52 6 12 8 4.1 31 59 85 -18 2 24 -17 41 48 -18 6 40 -17 37 33 0.18 7 0 0 -17 25 46 12 8 6.1 32 59 84 -17 36 5 -17 15 28 -17 40 21 -17 11 12 0.18 8 0 0 -16 59 14 12 8 8.1 33 58 83 -17 9 34 -16 48 56 -17 13 50 -16 44 40 0.18 9 0 0 -16 32 32 12 8 10.1 34 58 82 -16 42 52 -16 22 13 -16 47 8 -16 17 57 0.18 10 0 0 -16 5 40 12 8 12.2 35 58 81 -16 16 0 -15 55 20 -16 20 16 -15 51 4 0.18 11 0 0 -15 38 37 12 8 14.4 36 57 80 -15 48 58 -15 28 17 -15 53 15 -15 24 1 0.18 12 0 0 -15 11 26 12 8 16.7 37 57 79 -15 21 47 -15 1 6 -15 26 4 -14 56 49 0.18 13 0 0 -14 44 7 12 8 19.0 38 57 78 -14 54 28 -14 33 46 -14 58 45 -14 29 29 0.18 14 0 0 -14 16 40 12 8 21.4 39 56 77 -14 27 2 -14 6 19 -14 31 19 -14 2 2 0.18 15 0 0 -13 49 6 12 8 23.8 40 56 76 -13 59 28 -13 38 45 -14 3 45 -13 34 28 0.18 16 0 0 -13 21 26 12 8 26.3 41 55 75 -13 31 48 -13 11 5 -13 36 5 -13 6 48 0.18 17 0 0 -12 53 41 12 8 28.9 42 55 74 -13 4 3 -12 43 19 -13 8 20 -12 39 2 0.18 18 0 0 -12 25 51 12 8 31.5 43 55 73 -12 36 13 -12 15 29 -12 40 30 -12 11 12 0.18 19 0 0 -11 57 57 12 8 34.2 44 54 72 -12 8 19 -11 47 35 -12 12 36 -11 43 18 0.18 20 0 0 -11 29 59 12 8 36.9 45 54 71 -11 40 22 -11 19 37 -11 44 39 -11 15 20 0.18 21 0 0 -11 1 59 12 8 39.7 46 53 69 -11 12 22 -10 51 37 -11 16 39 -10 47 20 0.18 22 0 0 -10 33 58 12 8 42.5 48 53 68 -10 44 20 -10 23 36 -10 48 37 -10 19 19 0.18 23 0 0 -10 5 55 12 8 45.4 49 52 67 -10 16 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27 57 12 10 14.6 75 25 39 1 17 51 1 38 3 1 13 41 1 42 13 0.19 50 0 0 1 51 50 12 10 18.3 75 22 38 1 41 45 2 1 55 1 37 35 2 6 5 0.19 51 0 0 2 15 25 12 10 22.0 76 18 36 2 5 21 2 25 28 2 1 11 2 29 38 0.19 52 0 0 2 38 41 12 10 25.8 77 15 35 2 28 38 2 48 43 2 24 28 2 52 52 0.19 53 0 0 3 1 37 12 10 29.5 77 11 34 2 51 36 3 11 39 2 47 27 3 15 48 0.19 54 0 0 3 24 15 12 10 33.3 78 7 33 3 14 14 3 34 15 3 10 6 3 38 24 0.19 55 0 0 3 46 32 12 10 37.0 78 2 32 3 36 33 3 56 32 3 32 24 4 0 40 0.19 56 0 0 4 8 29 12 10 40.8 79 357 31 3 58 31 4 18 28 3 54 23 4 22 35 0.19 57 0 0 4 30 6 12 10 44.5 79 352 30 4 20 8 4 40 3 4 16 1 4 44 10 0.19 58 0 0 4 51 21 12 10 48.2 79 347 29 4 41 24 5 1 17 4 37 18 5 5 24 0.19 59 0 0 5 12 15 12 10 52.0 79 341 28 5 2 19 5 22 10 4 58 13 5 26 16 0.19 60 0 0 5 32 47 12 10 55.7 79 336 27 5 22 52 5 42 41 5 18 46 5 46 46 0.19 61 0 0 5 52 56 12 10 59.4 79 330 26 5 43 3 6 2 49 5 38 58 6 6 54 0.19 62 0 0 6 12 44 12 11 3.1 79 325 25 6 2 51 6 22 35 5 58 46 6 26 40 0.19 63 0 0 6 32 8 12 11 6.8 78 321 24 6 22 17 6 41 59 6 18 12 6 46 3 0.19 64 0 0 6 51 9 12 11 10.4 78 316 23 6 41 19 7 0 59 6 37 15 7 5 3 0.19 65 0 0 7 9 47 12 11 14.1 77 312 22 6 59 58 7 19 36 6 55 54 7 23 39 0.19 66 0 0 7 28 2 12 11 17.7 77 308 20 7 18 13 7 37 49 7 14 10 7 41 52 0.19 67 0 0 7 45 52 12 11 21.3 76 305 19 7 36 5 7 55 39 7 32 2 7 59 41 0.19 68 0 0 8 3 19 12 11 24.9 75 302 18 7 53 33 8 13 4 7 49 30 8 17 6 0.19 69 0 0 8 20 21 12 11 28.5 75 299 17 8 10 36 8 30 5 8 6 34 8 34 7 0.19 70 0 0 8 36 59 12 11 32.1 74 297 16 8 27 15 8 46 42 8 23 13 8 50 43 0.19 71 0 0 8 53 12 12 11 35.6 73 295 15 8 43 29 9 2 54 8 39 28 9 6 55 0.19 72 0 0 9 9 0 12 11 39.1 72 293 14 8 59 18 9 18 42 8 55 17 9 22 42 0.19 73 0 0 9 24 23 12 11 42.6 72 291 13 9 14 42 9 34 4 9 10 42 9 38 4 0.19 74 0 0 9 39 21 12 11 46.1 71 289 12 9 29 41 9 49 1 9 25 41 9 53 1 0.19 75 0 0 9 53 54 12 11 49.5 70 288 11 9 44 15 10 3 33 9 40 15 10 7 32 0.19 76 0 0 10 8 2 12 11 52.9 69 287 10 9 58 23 10 17 39 9 54 24 10 21 38 0.19 77 0 0 10 21 43 12 11 56.3 68 286 9 10 12 6 10 31 20 10 8 7 10 35 19 0.19 78 0 0 10 35 0 12 11 59.6 67 285 8 10 25 23 10 44 36 10 21 25 10 48 34 0.19 79 0 0 10 47 50 12 12 3.0 66 284 7 10 38 15 10 57 25 10 34 16 11 1 23 0.19 80 0 0 11 0 15 12 12 6.2 65 283 6 10 50 40 11 9 49 10 46 42 11 13 47 0.19 81 0 0 11 12 13 12 12 9.5 64 283 5 11 2 39 11 21 47 10 58 42 11 25 44 0.19 82 0 0 11 23 46 12 12 12.7 63 282 4 11 14 13 11 33 19 11 10 16 11 37 16 0.19 83 0 0 11 34 53 12 12 15.9 63 281 3 11 25 20 11 44 25 11 21 24 11 48 21 0.19 84 0 0 11 45 33 12 12 19.1 62 281 2 11 36 2 11 55 5 11 32 5 11 59 1 0.19 85 0 0 11 55 47 12 12 22.2 61 280 1 11 46 16 12 5 18 11 42 20 12 9 14 0.19 86 0 0 12 5 35 12 12 25.3 60 280 0 11 56 5 12 15 5 11 52 9 12 19 1 0.19 87 0 0 12 14 57 12 12 28.4 59 280 -1 12 5 28 12 24 27 12 1 32 12 28 22 0.19 88 0 0 12 23 53 12 12 31.4 58 279 -2 12 14 24 12 33 21 12 10 28 12 37 16 0.19 89 0 0 12 32 22 12 12 34.4 57 279 -3 12 22 53 12 41 50 12 18 58 12 45 44 0.19 90 0 0 12 40 24 12 12 37.3 56 279 -4 12 30 56 12 49 52 12 27 1 12 53 46 0.19 91 0 0 12 48 0 12 12 40.2 55 279 -5 12 38 33 12 57 27 12 34 38 13 1 21 0.19 92 0 0 12 55 10 12 12 43.1 54 279 -6 12 45 43 13 4 36 12 41 49 13 8 30 0.19 93 0 0 13 1 53 12 12 45.9 53 279 -7 12 52 27 13 11 19 12 48 33 13 15 13 0.19 94 0 0 13 8 10 12 12 48.7 52 278 -8 12 58 44 13 17 35 12 54 50 13 21 29 0.19 95 0 0 13 14 0 12 12 51.5 51 278 -9 13 4 34 13 23 25 13 0 41 13 27 18 0.19 96 0 0 13 19 23 12 12 54.2 50 278 -10 13 9 58 13 28 48 13 6 5 13 32 41 0.19 97 0 0 13 24 21 12 12 56.8 49 278 -11 13 14 56 13 33 45 13 11 2 13 37 38 0.19 98 0 0 13 28 51 12 12 59.5 48 278 -12 13 19 27 13 38 15 13 15 33 13 42 8 0.19 99 0 0 13 32 55 12 13 2.1 47 278 -13 13 23 31 13 42 19 13 19 38 13 46 12 0.19 100 0 0 13 36 33 12 13 4.6 46 278 -13 13 27 9 13 45 56 13 23 16 13 49 49 0.19 101 0 0 13 39 44 12 13 7.1 45 278 -14 13 30 20 13 49 7 13 26 27 13 52 59 0.19 102 0 0 13 42 28 12 13 9.6 44 278 -15 13 33 5 13 51 51 13 29 12 13 55 44 0.19 103 0 0 13 44 46 12 13 12.0 43 278 -16 13 35 23 13 54 9 13 31 30 13 58 1 0.19 104 0 0 13 46 37 12 13 14.4 42 279 -17 13 37 14 13 56 0 13 33 21 13 59 52 0.19 105 0 0 13 48 2 12 13 16.7 41 279 -18 13 38 39 13 57 25 13 34 46 14 1 17 0.19 106 0 0 13 49 0 12 13 19.0 41 279 -19 13 39 38 13 58 23 13 35 45 14 2 15 0.19 107 0 0 13 49 32 12 13 21.2 40 279 -20 13 40 9 13 58 55 13 36 17 14 2 47 0.19 108 0 0 13 49 38 12 13 23.4 39 279 -21 13 40 15 13 59 0 13 36 22 14 2 52 0.19 109 0 0 13 49 16 12 13 25.6 38 279 -22 13 39 54 13 58 39 13 36 1 14 2 31 0.19 110 0 0 13 48 29 12 13 27.7 37 279 -23 13 39 6 13 57 51 13 35 13 14 1 44 0.19 111 0 0 13 47 15 12 13 29.7 36 279 -24 13 37 52 13 56 38 13 33 59 14 0 30 0.19 112 0 0 13 45 35 12 13 31.7 35 279 -25 13 36 12 13 54 57 13 32 19 13 58 50 0.19 113 0 0 13 43 28 12 13 33.7 34 280 -26 13 34 5 13 52 51 13 30 12 13 56 43 0.19 114 0 0 13 40 55 12 13 35.6 33 280 -27 13 31 31 13 50 18 13 27 39 13 54 10 0.19 115 0 0 13 37 55 12 13 37.4 32 280 -28 13 28 32 13 47 18 13 24 39 13 51 11 0.19 116 0 0 13 34 29 12 13 39.2 31 280 -29 13 25 6 13 43 53 13 21 13 13 47 46 0.19 117 0 0 13 30 37 12 13 41.0 30 280 -30 13 21 13 13 40 1 13 17 20 13 43 54 0.19 118 0 0 13 26 19 12 13 42.7 29 280 -31 13 16 55 13 35 43 13 13 1 13 39 36 0.19 119 0 0 13 21 35 12 13 44.4 28 281 -31 13 12 10 13 30 59 13 8 16 13 34 52 0.19 120 0 0 13 16 24 12 13 46.0 27 281 -32 13 6 59 13 25 48 13 3 5 13 29 42 0.19 121 0 0 13 10 47 12 13 47.5 26 281 -33 13 1 22 13 20 12 12 57 28 13 24 5 0.19 122 0 0 13 4 44 12 13 49.0 25 281 -34 12 55 18 13 14 9 12 51 24 13 18 3 0.19 123 0 0 12 58 15 12 13 50.5 24 281 -35 12 48 49 13 7 41 12 44 54 13 11 35 0.19 124 0 0 12 51 20 12 13 51.9 23 282 -36 12 41 53 13 0 46 12 37 59 13 4 40 0.19 125 0 0 12 43 58 12 13 53.2 22 282 -37 12 34 31 12 53 25 12 30 37 12 57 20 0.19 126 0 0 12 36 11 12 13 54.5 21 282 -38 12 26 44 12 45 39 12 22 49 12 49 33 0.19 127 0 0 12 27 58 12 13 55.7 20 282 -39 12 18 30 12 37 26 12 14 35 12 41 21 0.19 128 0 0 12 19 20 12 13 56.9 19 282 -40 12 9 51 12 28 48 12 5 56 12 32 43 0.19 129 0 0 12 10 15 12 13 58.0 18 282 -41 12 0 46 12 19 44 11 56 50 12 23 40 0.19 130 0 0 12 0 45 12 13 59.1 17 283 -42 11 51 15 12 10 15 11 47 19 12 14 10 0.19 131 0 0 11 50 49 12 14 0.1 16 283 -43 11 41 18 12 0 20 11 37 22 12 4 15 0.19 132 0 0 11 40 28 12 14 1.1 15 283 -44 11 30 56 11 49 59 11 27 0 11 53 55 0.19 133 0 0 11 29 41 12 14 2.0 14 283 -44 11 20 9 11 39 13 11 16 12 11 43 9 0.19 134 0 0 11 18 29 12 14 2.8 13 283 -45 11 8 56 11 28 1 11 4 59 11 31 58 0.19 135 0 0 11 6 51 12 14 3.6 12 284 -46 10 57 18 11 16 25 10 53 20 11 20 22 0.19 136 0 0 10 54 49 12 14 4.3 11 284 -47 10 45 14 11 4 23 10 41 17 11 8 20 0.19 137 0 0 10 42 21 12 14 4.9 10 284 -48 10 32 46 10 51 56 10 28 48 10 55 53 0.19 138 0 0 10 29 28 12 14 5.5 9 284 -49 10 19 52 10 39 4 10 15 54 10 43 2 0.19 139 0 0 10 16 11 12 14 6.1 8 284 -50 10 6 34 10 25 47 10 2 35 10 29 46 0.19 140 0 0 10 2 29 12 14 6.5 7 284 -51 9 52 51 10 12 6 9 48 52 10 16 5 0.19 141 0 0 9 48 22 12 14 6.9 6 285 -52 9 38 43 9 58 0 9 34 44 10 1 59 0.19 142 0 0 9 33 51 12 14 7.3 5 285 -52 9 24 11 9 43 30 9 20 12 9 47 29 0.19 143 0 0 9 18 55 12 14 7.6 4 285 -53 9 9 15 9 28 35 9 5 15 9 32 35 0.19 144 0 0 9 3 36 12 14 7.8 3 285 -54 8 53 54 9 13 17 8 49 54 9 17 17 0.19 145 0 0 8 47 52 12 14 7.9 2 285 -55 8 38 10 8 57 34 8 34 9 9 1 35 0.19 146 0 0 8 31 45 12 14 8.0 1 285 -56 8 22 2 8 41 28 8 18 1 8 45 29 0.19 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: UCAC4 527-000772 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 24 16.8595 DE: +15 16 54.003 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 24 16.8594 DE: +15 16 54.003 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.5 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1471) Tornio asteroid class: approx. diameter [km]: 34 approx. diameter ["]: 0.017 distance from Earth [AU]: 2.68090 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 27 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): 0.014", 0.002", 57.331° remarks: * orbital elements for (1471)Tornio : Mean anomaly = 343.2400413952 deg Arg. of pericenter = 93.5742611376 deg Long. of node = 321.9057743754 deg Inclination = 13.6014001708 deg Eccentricity = 0.1198565129 Semimajor axis = 2.7172162269 AU Perihelion dist = 2.3915401652 AU Mag: H = 11.12, G = 0.15 Epoch of elements : MJD 60338.50754575 TDT (2024 Jan 29.5075) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr27,1.06,2024,1,29,12.181085,0.062090,-0.177419,17.008710,5.982146,0.004494,0.002554,-0.000001,0.000000 55.4119,15.4146,0.54,-17.99,False UCAC4 527-000772,0.40468323,15.2816678,12.03,11.51,11.23,0.0,0,,0.42520667,15.4146243,4.72,4.55,0,0,0 1471,Tornio,16.22,33.972,2.6809,0,0,3.859,19.62,,1.8,0 0,343.1284,2024,1,29,93.5743,321.9058,13.6014,0.11986,2.71722,2.39154,11.12,5.0,0.15 1.207,0.0140,0.0017,57,0.0036,Known errors,1.49,0,-1,-1 20240129_000772,60137.04 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org