IOTA/IOTA-ES occultation update for (3441) Pochaina / TYC 1235-00816-1 event on 2024 Jul 29, 07:52 UT Visible from Summary ------- On 2024 Jul 29 UT, the 18.143 km diameter asteroid (3441) Pochaina will occult a 11.8 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.12 mag to 17.89 mag (the magnitude of the asteroid) for at most 0.640 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 Jul 29, 07:48 - 2024 Jul 29, 07:56 * geocentric midpoint of event [JD]: 2460520.82816867 * magnitude of target star: 11.77 * magnitude drop [mag]: 6.12 * estimated maximum duration [s]: 0.640 * Moon: 37 % sunlit, 8° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.18 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.001", 75°) * approx speed of asteroid's shadow [km/s]: 28.2887 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1235-00816-1 by 3441 Pochaina on 2024 Jul 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 - 98 0 0 - 4 54 15 7 48 49.9 1 73 -68 - 4 59 26 - 4 49 4 - 5 1 18 - 4 47 12 .... - 97 0 0 - 4 35 43 7 48 50.0 2 73 -67 - 4 40 55 - 4 30 32 - 4 42 47 - 4 28 40 -0.15 - 96 0 0 - 4 16 57 7 48 50.2 3 73 -66 - 4 22 9 - 4 11 45 - 4 24 1 - 4 9 53 -0.14 - 95 0 0 - 3 57 56 7 48 50.4 4 73 -65 - 4 3 8 - 3 52 44 - 4 5 0 - 3 50 52 -0.13 - 94 0 0 - 3 38 41 7 48 50.7 5 73 -64 - 3 43 53 - 3 33 29 - 3 45 46 - 3 31 36 -0.13 - 93 0 0 - 3 19 12 7 48 51.1 6 73 -63 - 3 24 25 - 3 13 59 - 3 26 17 - 3 12 7 -0.13 - 92 0 0 - 2 59 30 7 48 51.6 7 73 -62 - 3 4 43 - 2 54 17 - 3 6 36 - 2 52 25 -0.13 - 91 0 0 - 2 39 35 7 48 52.1 8 73 -61 - 2 44 49 - 2 34 22 - 2 46 41 - 2 32 29 -0.13 - 90 0 0 - 2 19 28 7 48 52.8 9 73 -60 - 2 24 41 - 2 14 14 - 2 26 34 - 2 12 21 -0.13 - 89 0 0 - 1 59 8 7 48 53.5 10 73 -59 - 2 4 22 - 1 53 54 - 2 6 15 - 1 52 1 -0.13 - 88 0 0 - 1 38 36 7 48 54.2 11 73 -58 - 1 43 50 - 1 33 22 - 1 45 43 - 1 31 29 -0.13 - 87 0 0 - 1 17 53 7 48 55.1 12 73 -57 - 1 23 8 - 1 12 38 - 1 25 1 - 1 10 45 -0.13 - 86 0 0 - 0 56 59 7 48 56.0 13 72 -56 - 1 2 14 - 0 51 44 - 1 4 7 - 0 49 51 -0.13 - 85 0 0 - 0 35 55 7 48 57.0 14 72 -55 - 0 41 10 - 0 30 39 - 0 43 3 - 0 28 46 -0.13 - 84 0 0 - 0 14 40 7 48 58.1 15 72 -54 - 0 19 56 - 0 9 25 - 0 21 49 - 0 7 31 -0.13 - 83 0 0 0 6 44 7 48 59.3 17 72 -53 0 1 28 0 12 0 - 0 0 25 0 13 53 -0.12 - 82 0 0 0 28 17 7 49 0.5 18 73 -52 0 23 1 0 33 33 0 21 8 0 35 27 -0.12 - 81 0 0 0 49 59 7 49 1.9 19 73 -51 0 44 43 0 55 15 0 42 49 0 57 9 -0.12 - 80 0 0 1 11 49 7 49 3.3 20 73 -50 1 6 33 1 17 6 1 4 39 1 19 0 -0.12 - 79 0 0 1 33 47 7 49 4.7 21 73 -49 1 28 30 1 39 4 1 26 37 1 40 58 -0.12 - 78 0 0 1 55 52 7 49 6.3 22 73 -48 1 50 35 2 1 9 1 48 41 2 3 3 -0.12 - 77 0 0 2 18 4 7 49 7.9 23 73 -47 2 12 47 2 23 21 2 10 53 2 25 15 -0.12 - 76 0 0 2 40 21 7 49 9.6 24 73 -46 2 35 4 2 45 39 2 33 10 2 47 33 -0.12 - 75 0 0 3 2 45 7 49 11.3 25 73 -45 2 57 27 3 8 2 2 55 33 3 9 56 -0.12 - 74 0 0 3 25 13 7 49 13.2 26 73 -43 3 19 56 3 30 31 3 18 2 3 32 25 -0.12 - 73 0 0 3 47 47 7 49 15.1 27 73 -42 3 42 29 3 53 4 3 40 35 3 54 59 -0.12 - 72 0 0 4 10 24 7 49 17.1 28 73 -41 4 5 6 4 15 42 4 3 12 4 17 36 -0.12 - 71 0 0 4 33 5 7 49 19.1 29 73 -40 4 27 47 4 38 23 4 25 53 4 40 17 -0.12 - 70 0 0 4 55 48 7 49 21.3 30 73 -39 4 50 30 5 1 6 4 48 36 5 3 1 -0.12 - 69 0 0 5 18 35 7 49 23.4 32 74 -38 5 13 16 5 23 53 5 11 22 5 25 47 -0.12 - 68 0 0 5 41 23 7 49 25.7 33 74 -37 5 36 4 5 46 41 5 34 10 5 48 35 -0.12 - 67 0 0 6 4 12 7 49 28.0 34 74 -36 5 58 54 6 9 30 5 56 59 6 11 24 -0.12 - 66 0 0 6 27 2 7 49 30.4 35 74 -35 6 21 44 6 32 20 6 19 49 6 34 15 -0.12 - 65 0 0 6 49 52 7 49 32.9 36 74 -34 6 44 34 6 55 11 6 42 40 6 57 5 -0.12 - 64 0 0 7 12 42 7 49 35.4 37 74 -33 7 7 24 7 18 0 7 5 29 7 19 55 -0.12 - 63 0 0 7 35 31 7 49 38.0 38 75 -32 7 30 13 7 40 50 7 28 19 7 42 44 -0.12 - 62 0 0 7 58 19 7 49 40.6 39 75 -31 7 53 0 8 3 37 7 51 6 8 5 31 -0.12 - 61 0 0 8 21 4 7 49 43.3 40 75 -30 8 15 46 8 26 23 8 13 52 8 28 17 -0.12 - 60 0 0 8 43 47 7 49 46.1 41 75 -29 8 38 29 8 49 6 8 36 35 8 51 0 -0.12 - 59 0 0 9 6 27 7 49 48.9 42 75 -28 9 1 9 9 11 45 8 59 15 9 13 40 -0.12 - 58 0 0 9 29 3 7 49 51.8 43 76 -26 9 23 45 9 34 22 9 21 51 9 36 16 -0.12 - 57 0 0 9 51 35 7 49 54.7 44 76 -25 9 46 18 9 56 53 9 44 23 9 58 48 -0.12 - 56 0 0 10 14 3 7 49 57.7 45 76 -24 10 8 45 10 19 21 10 6 51 10 21 15 -0.12 - 55 0 0 10 36 25 7 50 0.7 46 77 -23 10 31 7 10 41 43 10 29 13 10 43 37 -0.12 - 54 0 0 10 58 41 7 50 3.7 47 77 -22 10 53 24 11 3 59 10 51 29 11 5 53 -0.12 - 53 0 0 11 20 51 7 50 6.9 49 77 -21 11 15 34 11 26 9 11 13 40 11 28 3 -0.12 - 52 0 0 11 42 54 7 50 10.0 50 78 -20 11 37 37 11 48 12 11 35 43 11 50 6 -0.12 - 51 0 0 12 4 50 7 50 13.2 51 78 -19 11 59 33 12 10 7 11 57 39 12 12 1 -0.12 - 50 0 0 12 26 38 7 50 16.5 52 78 -18 12 21 21 12 31 55 12 19 27 12 33 49 -0.12 - 49 0 0 12 48 18 7 50 19.8 53 79 -17 12 43 1 12 53 34 12 41 7 12 55 28 -0.12 - 48 0 0 13 9 49 7 50 23.1 54 79 -16 13 4 32 13 15 5 13 2 39 13 16 59 -0.12 - 47 0 0 13 31 10 7 50 26.5 55 80 -15 13 25 54 13 36 27 13 24 0 13 38 20 -0.12 - 46 0 0 13 52 22 7 50 29.9 56 80 -14 13 47 6 13 57 38 13 45 13 13 59 32 -0.12 - 45 0 0 14 13 24 7 50 33.4 57 81 -13 14 8 8 14 18 40 14 6 15 14 20 33 -0.12 - 44 0 0 14 34 15 7 50 36.8 58 81 -12 14 29 0 14 39 31 14 27 6 14 41 24 -0.12 - 43 0 0 14 54 55 7 50 40.3 59 82 -11 14 49 40 15 0 10 14 47 47 15 2 4 -0.12 - 42 0 0 15 15 24 7 50 43.9 60 83 -10 15 10 9 15 20 39 15 8 16 15 22 32 -0.12 - 41 0 0 15 35 41 7 50 47.4 61 83 -9 15 30 26 15 40 55 15 28 33 15 42 48 -0.12 - 40 0 0 15 55 45 7 50 51.0 62 84 -8 15 50 31 16 0 59 15 48 38 16 2 52 -0.12 - 39 0 0 16 15 37 7 50 54.7 63 85 -7 16 10 23 16 20 51 16 8 30 16 22 44 -0.12 - 38 0 0 16 35 16 7 50 58.3 64 85 -6 16 30 2 16 40 29 16 28 9 16 42 22 -0.12 - 37 0 0 16 54 41 7 51 2.0 65 86 -5 16 49 27 16 59 54 16 47 35 17 1 47 -0.12 - 36 0 0 17 13 52 7 51 5.6 66 87 -4 17 8 39 17 19 5 17 6 47 17 20 58 -0.12 - 35 0 0 17 32 50 7 51 9.3 67 88 -2 17 27 37 17 38 2 17 25 45 17 39 55 -0.12 - 34 0 0 17 51 33 7 51 13.1 68 89 -1 17 46 20 17 56 45 17 44 28 17 58 37 -0.12 - 33 0 0 18 10 1 7 51 16.8 69 90 0 18 4 49 18 15 13 18 2 57 18 17 5 -0.12 - 32 0 0 18 28 14 7 51 20.5 70 91 1 18 23 2 18 33 26 18 21 10 18 35 18 -0.12 - 31 0 0 18 46 12 7 51 24.3 71 92 2 18 41 0 18 51 23 18 39 9 18 53 15 -0.12 - 30 0 0 19 3 54 7 51 28.1 72 94 3 18 58 43 19 9 5 18 56 51 19 10 56 -0.12 - 29 0 0 19 21 20 7 51 31.8 73 95 4 19 16 9 19 26 30 19 14 18 19 28 22 -0.12 - 28 0 0 19 38 30 7 51 35.6 73 97 5 19 33 19 19 43 40 19 31 28 19 45 31 -0.12 - 27 0 0 19 55 23 7 51 39.4 74 99 6 19 50 13 20 0 33 19 48 22 20 2 24 -0.12 - 26 0 0 20 12 0 7 51 43.2 75 101 7 20 6 50 20 17 9 20 4 59 20 19 0 -0.12 - 25 0 0 20 28 19 7 51 47.0 76 103 8 20 23 10 20 33 28 20 21 19 20 35 20 -0.12 - 24 0 0 20 44 22 7 51 50.8 77 105 9 20 39 13 20 49 31 20 37 23 20 51 22 -0.12 - 23 0 0 21 0 7 7 51 54.7 78 108 10 20 54 59 21 5 15 20 53 8 21 7 6 -0.12 - 22 0 0 21 15 35 7 51 58.5 79 111 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47.6 82 197 23 24 3 35 24 13 42 24 1 47 24 15 30 -0.12 - 8 0 0 24 19 44 7 52 51.3 82 203 24 24 14 41 24 24 46 24 12 52 24 26 35 -0.12 - 7 0 0 24 30 29 7 52 55.0 81 209 25 24 25 27 24 35 32 24 23 38 24 37 20 -0.12 - 6 0 0 24 40 55 7 52 58.6 81 214 26 24 35 53 24 45 58 24 34 5 24 47 46 -0.12 - 5 0 0 24 51 2 7 53 2.3 80 218 27 24 46 0 24 56 4 24 44 12 24 57 52 -0.12 - 4 0 0 25 0 48 7 53 6.0 79 222 28 24 55 47 25 5 50 24 53 59 25 7 38 -0.12 - 3 0 0 25 10 15 7 53 9.6 79 225 29 25 5 14 25 15 16 25 3 26 25 17 4 -0.12 - 2 0 0 25 19 22 7 53 13.2 78 228 30 25 14 21 25 24 23 25 12 33 25 26 11 -0.12 - 1 0 0 25 28 9 7 53 16.8 77 231 31 25 23 8 25 33 9 25 21 20 25 34 57 -0.12 0 0 0 25 36 36 7 53 20.4 76 233 31 25 31 35 25 41 36 25 29 47 25 43 24 -0.12 1 0 0 25 44 42 7 53 23.9 75 235 32 25 39 42 25 49 42 25 37 55 25 51 30 -0.12 2 0 0 25 52 29 7 53 27.4 75 237 33 25 47 29 25 57 29 25 45 42 25 59 17 -0.12 3 0 0 25 59 56 7 53 31.0 74 239 34 25 54 56 26 4 55 25 53 9 26 6 43 -0.12 4 0 0 26 7 2 7 53 34.5 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6 32 27 20 0 -0.12 31 0 0 27 11 15 7 54 58.7 49 265 59 27 6 18 27 16 12 27 4 31 27 17 59 -0.12 32 0 0 27 8 54 7 55 1.4 48 265 60 27 3 57 27 13 51 27 2 10 27 15 38 -0.12 33 0 0 27 6 12 7 55 4.0 47 266 61 27 1 15 27 11 10 26 59 28 27 12 56 -0.12 34 0 0 27 3 11 7 55 6.6 46 266 62 26 58 13 27 8 8 26 56 26 27 9 55 -0.12 35 0 0 26 59 49 7 55 9.2 46 267 63 26 54 51 27 4 46 26 53 5 27 6 33 -0.12 36 0 0 26 56 7 7 55 11.8 45 267 64 26 51 9 27 1 5 26 49 22 27 2 52 -0.12 37 0 0 26 52 5 7 55 14.3 44 268 65 26 47 7 26 57 3 26 45 20 26 58 50 -0.12 38 0 0 26 47 43 7 55 16.7 43 269 66 26 42 45 26 52 41 26 40 58 26 54 28 -0.12 39 0 0 26 43 1 7 55 19.1 42 269 67 26 38 3 26 47 59 26 36 16 26 49 46 -0.12 40 0 0 26 37 58 7 55 21.5 41 270 67 26 33 0 26 42 57 26 31 13 26 44 44 -0.12 41 0 0 26 32 36 7 55 23.9 40 270 68 26 27 38 26 37 35 26 25 51 26 39 22 -0.12 42 0 0 26 26 54 7 55 26.2 39 271 69 26 21 55 26 31 53 26 20 8 26 33 40 -0.12 43 0 0 26 20 52 7 55 28.4 38 271 70 26 15 53 26 25 51 26 14 6 26 27 38 -0.12 44 0 0 26 14 30 7 55 30.7 37 272 71 26 9 31 26 19 29 26 7 43 26 21 16 -0.12 45 0 0 26 7 48 7 55 32.9 37 272 72 26 2 48 26 12 47 26 1 1 26 14 34 -0.12 46 0 0 26 0 46 7 55 35.0 36 273 73 25 55 46 26 5 45 25 53 59 26 7 33 -0.12 47 0 0 25 53 24 7 55 37.1 35 273 74 25 48 24 25 58 24 25 46 37 26 0 12 -0.12 48 0 0 25 45 43 7 55 39.1 34 274 75 25 40 43 25 50 43 25 38 55 25 52 30 -0.12 49 0 0 25 37 42 7 55 41.1 33 274 75 25 32 41 25 42 42 25 30 53 25 44 30 -0.12 50 0 0 25 29 21 7 55 43.1 32 275 76 25 24 20 25 34 21 25 22 32 25 36 9 -0.12 51 0 0 25 20 40 7 55 45.0 31 275 77 25 15 40 25 25 41 25 13 52 25 27 29 -0.12 52 0 0 25 11 41 7 55 46.9 30 276 78 25 6 39 25 16 42 25 4 51 25 18 30 -0.12 53 0 0 25 2 21 7 55 48.7 29 276 79 24 57 20 25 7 23 24 55 32 25 9 11 -0.12 54 0 0 24 52 42 7 55 50.5 28 276 80 24 47 41 24 57 44 24 45 52 24 59 33 -0.12 55 0 0 24 42 44 7 55 52.2 27 277 81 24 37 42 24 47 46 24 35 54 24 49 35 -0.12 56 0 0 24 32 27 7 55 53.9 26 277 81 24 27 25 24 37 29 24 25 36 24 39 18 -0.12 57 0 0 24 21 50 7 55 55.5 26 278 82 24 16 48 24 26 53 24 14 59 24 28 42 -0.12 58 0 0 24 10 55 7 55 57.1 25 278 83 24 5 52 24 15 58 24 4 3 24 17 47 -0.12 59 0 0 23 59 40 7 55 58.6 24 279 83 23 54 37 24 4 44 23 52 48 24 6 33 -0.12 60 0 0 23 48 7 7 56 0.1 23 279 84 23 43 3 23 53 10 23 41 14 23 55 0 -0.12 61 0 0 23 36 14 7 56 1.5 22 280 85 23 31 10 23 41 18 23 29 21 23 43 8 -0.13 62 0 0 23 24 4 7 56 2.8 21 280 85 23 18 59 23 29 8 23 17 10 23 30 57 -0.13 63 0 0 23 11 34 7 56 4.1 20 280 85 23 6 29 23 16 39 23 4 40 23 18 28 -0.13 64 0 0 22 58 46 7 56 5.4 19 281 85 22 53 41 23 3 51 22 51 52 23 5 41 -0.13 65 0 0 22 45 40 7 56 6.6 18 281 85 22 40 35 22 50 45 22 38 45 22 52 35 -0.13 66 0 0 22 32 16 7 56 7.7 17 282 85 22 27 10 22 37 21 22 25 20 22 39 11 -0.13 67 0 0 22 18 33 7 56 8.8 16 282 84 22 13 27 22 23 39 22 11 37 22 25 29 -0.13 68 0 0 22 4 33 7 56 9.8 15 282 84 21 59 27 22 9 40 21 57 36 22 11 30 -0.13 69 0 0 21 50 15 7 56 10.8 14 283 83 21 45 8 21 55 22 21 43 18 21 57 12 -0.13 70 0 0 21 35 40 7 56 11.7 13 283 82 21 30 32 21 40 47 21 28 42 21 42 37 -0.13 71 0 0 21 20 47 7 56 12.5 12 283 81 21 15 39 21 25 54 21 13 49 21 27 45 -0.13 72 0 0 21 5 37 7 56 13.3 11 284 81 21 0 29 21 10 45 20 58 38 21 12 35 -0.13 73 0 0 20 50 10 7 56 14.0 10 284 80 20 45 2 20 55 18 20 43 11 20 57 9 -0.14 74 0 0 20 34 26 7 56 14.7 9 285 79 20 29 17 20 39 35 20 27 27 20 41 26 -0.14 75 0 0 20 18 26 7 56 15.3 8 285 78 20 13 17 20 23 35 20 11 26 20 25 26 -0.14 76 0 0 20 2 9 7 56 15.8 7 285 77 19 57 0 20 7 19 19 55 9 20 9 10 -0.14 77 0 0 19 45 36 7 56 16.3 6 286 76 19 40 27 19 50 46 19 38 35 19 52 38 -0.15 78 0 0 19 28 48 7 56 16.7 5 286 75 19 23 38 19 33 58 19 21 46 19 35 49 -0.15 79 0 0 19 11 44 7 56 17.0 4 286 74 19 6 33 19 16 54 19 4 42 19 18 46 -0.16 80 0 0 18 54 24 7 56 17.3 3 287 73 18 49 13 18 59 35 18 47 22 19 1 27 -0.17 81 0 0 18 36 49 7 56 17.5 2 287 72 18 31 38 18 42 0 18 29 46 18 43 52 -0.19 82 0 0 18 19 0 7 56 17.6 1 287 71 18 13 48 18 24 11 18 11 56 18 26 3 -0.24 83 0 0 18 0 56 7 56 17.7 0 288 71 17 55 44 18 6 8 17 53 52 18 8 0 -0.51 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: TYC 1235-00816-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 36 18.9532 DE: +16 42 20.828 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 36 18.9533 DE: +16 42 20.829 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.8 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3441) Pochaina asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.66280 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.022", 0.001", 74.885° remarks: * orbital elements for (3441)Pochaina : Mean anomaly = 6.7037956320 deg Arg. of pericenter = 270.5194553596 deg Long. of node = 112.8144131291 deg Inclination = 2.7641710865 deg Eccentricity = 0.1904864105 Semimajor axis = 3.0993276788 AU Perihelion dist = 2.5089478743 AU Mag: H = 12.70, G = 0.15 Epoch of elements : MJD 60520.32816971 TDT (2024 Jul 29.3282) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,0.64,2024,7,29,7.876048,-0.024213,0.113032,15.620891,3.306153,-0.004987,-0.001276,-0.000001,0.000000 -11.1779,16.7874,63.48,18.60,False TYC 1235-00816-1,3.60526473,16.7057855,12.06,11.77,11.61,0.0,0,,3.62829086,16.7873787,6.13,5.84,0,0,0 3441,Pochaina,17.89,18.143,2.6628,0,0,3.593,10.92,,1.8,0 0,6.6445,2024,7,29,270.5195,112.8144,2.7642,0.19049,3.09933,2.50895,12.69,5.0,0.15 1.180,0.0223,0.0012,75,0.0017,Known errors,1.29,0,-1,-1 20240729_0816-1,60140.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org