IOTA/IOTA-ES occultation update for (675) Ludmilla / UCAC4 423-134501 event on 2023 Oct 19, 23:02 UT Visible from South America Summary ------- On 2023 Oct 19 UT, the 65.3 km diameter asteroid (675) Ludmilla will occult a 12.2 mag star in the constellation Aquarius for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.11 mag to 12.80 mag (the magnitude of the asteroid) for at most 8.040 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: 2023 Oct 19, 22:48 - 2023 Oct 19, 23:15 * geocentric midpoint of event [JD]: 2460237.45983859 * magnitude of target star: 12.17 * magnitude drop [mag]: 1.11 * estimated maximum duration [s]: 8.040 * Moon: 26 % sunlit, 49° distance * Sun: 107° distance * rough path description: South America Additional comments ------------------- RUWE The occultation path -------------------- * approximate projected width [km]: 65 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 65°) * approx speed of asteroid's shadow [km/s]: 8.1260 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 423-134501 by 675 Ludmilla on 2023 Oct 19 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 -146 0 0 8 30 24 22 49 5.1 0 96 63 8 12 36 8 48 11 8 7 44 8 53 3 .... -145 0 0 8 24 30 22 49 5.3 1 96 62 8 6 42 8 42 18 8 1 51 8 47 10 0.02 -144 0 0 8 18 28 22 49 5.7 2 96 61 8 0 40 8 36 17 7 55 48 8 41 8 0.01 -143 0 0 8 12 18 22 49 6.3 3 96 61 7 54 29 8 30 6 7 49 37 8 34 58 0.00 -142 0 0 8 5 58 22 49 7.3 4 96 60 7 48 10 8 23 47 7 43 18 8 28 39 0.00 -141 0 0 7 59 31 22 49 8.4 5 96 59 7 41 42 8 17 20 7 36 50 8 22 12 0.00 -140 0 0 7 52 55 22 49 9.8 6 96 58 7 35 5 8 10 44 7 30 13 8 15 36 0.00 -139 0 0 7 46 10 22 49 11.4 7 97 58 7 28 21 8 4 0 7 23 29 8 8 52 0.00 -138 0 0 7 39 18 22 49 13.3 8 97 57 7 21 28 7 57 8 7 16 36 8 2 0 0.00 -137 0 0 7 32 17 22 49 15.4 9 97 56 7 14 27 7 50 7 7 9 34 7 54 59 0.00 -136 0 0 7 25 8 22 49 17.8 10 97 55 7 7 17 7 42 59 7 2 25 7 47 51 0.00 -135 0 0 7 17 51 22 49 20.4 11 97 54 7 0 0 7 35 42 6 55 8 7 40 34 0.00 -134 0 0 7 10 27 22 49 23.2 12 97 54 6 52 36 7 28 18 6 47 43 7 33 10 0.00 -133 0 0 7 2 54 22 49 26.3 13 97 53 6 45 3 7 20 46 6 40 11 7 25 38 0.00 -132 0 0 6 55 15 22 49 29.6 14 97 52 6 37 23 7 13 6 6 32 30 7 17 59 0.00 -131 0 0 6 47 27 22 49 33.2 15 98 51 6 29 35 7 5 19 6 24 43 7 10 12 0.00 -130 0 0 6 39 32 22 49 37.0 16 98 50 6 21 40 6 57 25 6 16 48 7 2 17 0.00 -129 0 0 6 31 30 22 49 41.1 17 98 49 6 13 38 6 49 23 6 8 45 6 54 16 0.00 -128 0 0 6 23 21 22 49 45.4 18 98 49 6 5 29 6 41 14 6 0 36 6 46 7 0.00 -127 0 0 6 15 5 22 49 49.9 19 98 48 5 57 12 6 32 58 5 52 19 6 37 51 0.00 -126 0 0 6 6 42 22 49 54.7 20 98 47 5 48 49 6 24 36 5 43 56 6 29 29 0.00 -125 0 0 5 58 13 22 49 59.8 22 98 46 5 40 19 6 16 6 5 35 26 6 21 0 0.00 -124 0 0 5 49 37 22 50 5.1 23 98 45 5 31 43 6 7 31 5 26 50 6 12 24 0.00 -123 0 0 5 40 54 22 50 10.6 24 98 44 5 23 0 5 58 48 5 18 7 6 3 41 0.00 -122 0 0 5 32 5 22 50 16.3 25 99 43 5 14 11 5 50 0 5 9 17 5 54 53 -0.01 -121 0 0 5 23 10 22 50 22.3 26 99 42 5 5 15 5 41 5 5 0 22 5 45 58 -0.01 -120 0 0 5 14 9 22 50 28.6 27 99 41 4 56 14 5 32 4 4 51 21 5 36 58 -0.01 -119 0 0 5 5 2 22 50 35.0 28 99 40 4 47 7 5 22 58 4 42 14 5 27 51 -0.01 -118 0 0 4 55 50 22 50 41.7 29 99 39 4 37 55 5 13 46 4 33 1 5 18 39 -0.01 -117 0 0 4 46 32 22 50 48.7 30 99 39 4 28 37 5 4 28 4 23 43 5 9 22 -0.01 -116 0 0 4 37 9 22 50 55.9 31 99 38 4 19 13 4 55 5 4 14 20 4 59 59 -0.01 -115 0 0 4 27 41 22 51 3.3 32 99 37 4 9 45 4 45 37 4 4 51 4 50 31 -0.01 -114 0 0 4 18 8 22 51 10.9 33 99 36 4 0 11 4 36 4 3 55 18 4 40 58 -0.01 -113 0 0 4 8 30 22 51 18.8 34 99 35 3 50 33 4 26 26 3 45 39 4 31 20 -0.01 -112 0 0 3 58 47 22 51 26.9 35 99 34 3 40 51 4 16 44 3 35 57 4 21 38 -0.01 -111 0 0 3 49 0 22 51 35.2 36 100 33 3 31 3 4 6 57 3 26 9 4 11 51 -0.01 -110 0 0 3 39 9 22 51 43.7 37 100 32 3 21 12 3 57 7 3 16 18 4 2 1 -0.01 -109 0 0 3 29 14 22 51 52.5 38 100 31 3 11 17 3 47 12 3 6 23 3 52 6 -0.01 -108 0 0 3 19 15 22 52 1.5 39 100 30 3 1 18 3 37 13 2 56 24 3 42 7 -0.01 -107 0 0 3 9 13 22 52 10.7 40 100 29 2 51 15 3 27 11 2 46 21 3 32 5 -0.01 -106 0 0 2 59 7 22 52 20.1 41 100 28 2 41 9 3 17 5 2 36 15 3 21 59 -0.01 -105 0 0 2 48 58 22 52 29.7 42 100 27 2 31 0 3 6 56 2 26 6 3 11 50 -0.01 -104 0 0 2 38 46 22 52 39.5 43 100 26 2 20 48 2 56 44 2 15 54 3 1 39 -0.01 -103 0 0 2 28 31 22 52 49.5 44 100 25 2 10 33 2 46 30 2 5 39 2 51 24 -0.01 -102 0 0 2 18 14 22 52 59.7 45 100 24 2 0 16 2 36 13 1 55 21 2 41 7 -0.01 -101 0 0 2 7 55 22 53 10.1 47 100 23 1 49 56 2 25 53 1 45 2 2 30 48 -0.01 -100 0 0 1 57 33 22 53 20.8 48 100 22 1 39 34 2 15 31 1 34 40 2 20 26 -0.01 - 99 0 0 1 47 9 22 53 31.6 49 100 21 1 29 11 2 5 8 1 24 16 2 10 2 -0.01 - 98 0 0 1 36 44 22 53 42.6 50 100 20 1 18 45 1 54 43 1 13 51 1 59 37 -0.01 - 97 0 0 1 26 17 22 53 53.7 51 100 19 1 8 19 1 44 16 1 3 24 1 49 11 -0.01 - 96 0 0 1 15 50 22 54 5.1 52 100 18 0 57 51 1 33 48 0 52 56 1 38 43 -0.01 - 95 0 0 1 5 21 22 54 16.6 53 101 17 0 47 22 1 23 20 0 42 27 1 28 14 -0.01 - 94 0 0 0 54 51 22 54 28.3 54 101 16 0 36 52 1 12 50 0 31 58 1 17 45 -0.01 - 93 0 0 0 44 21 22 54 40.2 55 101 15 0 26 22 1 2 20 0 21 28 1 7 15 -0.01 - 92 0 0 0 33 51 22 54 52.2 56 101 14 0 15 52 0 51 50 0 10 57 0 56 44 -0.01 - 91 0 0 0 23 20 22 55 4.4 57 101 13 0 5 21 0 41 19 0 0 27 0 46 14 -0.01 - 90 0 0 0 12 50 22 55 16.7 58 101 12 - 0 5 9 0 30 49 - 0 10 3 0 35 44 -0.01 - 89 0 0 0 2 20 22 55 29.2 59 101 11 - 0 15 38 0 20 19 - 0 20 33 0 25 14 -0.01 - 88 0 0 - 0 8 9 22 55 41.9 60 101 10 - 0 26 8 0 9 50 - 0 31 2 0 14 45 -0.01 - 87 0 0 - 0 18 37 22 55 54.7 61 101 9 - 0 36 36 - 0 0 38 - 0 41 30 0 4 17 -0.01 - 86 0 0 - 0 29 4 22 56 7.6 62 101 8 - 0 47 3 - 0 11 5 - 0 51 57 - 0 6 10 -0.01 - 85 0 0 - 0 39 29 22 56 20.6 64 101 7 - 0 57 28 - 0 21 31 - 1 2 23 - 0 16 36 -0.01 - 84 0 0 - 0 49 53 22 56 33.8 65 101 6 - 1 7 52 - 0 31 55 - 1 12 46 - 0 27 0 -0.01 - 83 0 0 - 1 0 16 22 56 47.1 66 101 5 - 1 18 14 - 0 42 17 - 1 23 8 - 0 37 22 -0.01 - 82 0 0 - 1 10 36 22 57 0.5 67 101 4 - 1 28 34 - 0 52 37 - 1 33 28 - 0 47 43 -0.01 - 81 0 0 - 1 20 53 22 57 14.0 68 101 3 - 1 38 52 - 1 2 55 - 1 43 46 - 0 58 0 -0.01 - 80 0 0 - 1 31 8 22 57 27.7 69 101 2 - 1 49 6 - 1 13 10 - 1 54 1 - 1 8 16 -0.01 - 79 0 0 - 1 41 21 22 57 41.4 70 101 1 - 1 59 19 - 1 23 23 - 2 4 13 - 1 18 28 -0.01 - 78 0 0 - 1 51 30 22 57 55.2 71 101 0 - 2 9 28 - 1 33 32 - 2 14 22 - 1 28 38 -0.01 - 77 0 0 - 2 1 36 22 58 9.1 72 102 -1 - 2 19 34 - 1 43 38 - 2 24 28 - 1 38 44 -0.01 - 76 0 0 - 2 11 38 22 58 23.2 73 102 -2 - 2 29 36 - 1 53 41 - 2 34 30 - 1 48 47 -0.01 - 75 0 0 - 2 21 37 22 58 37.2 74 102 -3 - 2 39 34 - 2 3 40 - 2 44 29 - 1 58 46 -0.01 - 74 0 0 - 2 31 32 22 58 51.4 75 102 -4 - 2 49 29 - 2 13 35 - 2 54 23 - 2 8 41 -0.01 - 73 0 0 - 2 41 22 22 59 5.6 76 102 -5 - 2 59 19 - 2 23 25 - 3 4 13 - 2 18 31 -0.01 - 72 0 0 - 2 51 9 22 59 19.9 77 102 -6 - 3 9 5 - 2 33 12 - 3 13 59 - 2 28 18 -0.01 - 71 0 0 - 3 0 50 22 59 34.3 79 103 -7 - 3 18 47 - 2 42 54 - 3 23 41 - 2 38 0 -0.01 - 70 0 0 - 3 10 27 22 59 48.7 80 103 -8 - 3 28 23 - 2 52 30 - 3 33 17 - 2 47 37 -0.01 - 69 0 0 - 3 19 58 23 0 3.1 81 104 -9 - 3 37 54 - 3 2 2 - 3 42 48 - 2 57 8 -0.01 - 68 0 0 - 3 29 25 23 0 17.6 82 104 -10 - 3 47 21 - 3 11 29 - 3 52 14 - 3 6 35 -0.01 - 67 0 0 - 3 38 46 23 0 32.1 83 105 -11 - 3 56 41 - 3 20 50 - 4 1 35 - 3 15 56 -0.01 - 66 0 0 - 3 48 1 23 0 46.7 84 106 -12 - 4 5 56 - 3 30 5 - 4 10 49 - 3 25 12 -0.01 - 65 0 0 - 3 57 10 23 1 1.3 85 108 -13 - 4 15 5 - 3 39 15 - 4 19 58 - 3 34 21 -0.01 - 64 0 0 - 4 6 13 23 1 15.9 86 110 -14 - 4 24 8 - 3 48 18 - 4 29 1 - 3 43 25 -0.01 - 63 0 0 - 4 15 10 23 1 30.5 87 114 -15 - 4 33 4 - 3 57 15 - 4 37 57 - 3 52 22 -0.01 - 62 0 0 - 4 24 0 23 1 45.1 88 123 -16 - 4 41 54 - 4 6 6 - 4 46 47 - 4 1 12 -0.01 - 61 0 0 - 4 32 43 23 1 59.7 89 146 -17 - 4 50 37 - 4 14 49 - 4 55 31 - 4 9 56 -0.02 - 60 0 0 - 4 41 20 23 2 14.3 89 208 -18 - 4 59 14 - 4 23 26 - 5 4 7 - 4 18 33 -0.02 - 59 0 0 - 4 49 50 23 2 29.0 88 246 -19 - 5 7 43 - 4 31 56 - 5 12 36 - 4 27 3 -0.02 - 58 0 0 - 4 58 12 23 2 43.5 87 258 -20 - 5 16 5 - 4 40 19 - 5 20 58 - 4 35 26 -0.02 - 57 0 0 - 5 6 27 23 2 58.1 86 264 -21 - 5 24 20 - 4 48 34 - 5 29 12 - 4 43 41 -0.02 - 56 0 0 - 5 14 34 23 3 12.7 85 267 -22 - 5 32 27 - 4 56 41 - 5 37 19 - 4 51 49 -0.02 - 55 0 0 - 5 22 34 23 3 27.2 84 269 -23 - 5 40 26 - 5 4 41 - 5 45 18 - 4 59 49 -0.02 - 54 0 0 - 5 30 25 23 3 41.7 83 270 -24 - 5 48 17 - 5 12 33 - 5 53 9 - 5 7 40 -0.02 - 53 0 0 - 5 38 8 23 3 56.1 82 271 -25 - 5 56 0 - 5 20 17 - 6 0 53 - 5 15 24 -0.02 - 52 0 0 - 5 45 44 23 4 10.5 81 271 -26 - 6 3 35 - 5 27 52 - 6 8 27 - 5 23 0 -0.02 - 51 0 0 - 5 53 10 23 4 24.9 80 272 -27 - 6 11 1 - 5 35 19 - 6 15 54 - 5 30 27 -0.02 - 50 0 0 - 6 0 29 23 4 39.2 79 272 -28 - 6 18 19 - 5 42 38 - 6 23 11 - 5 37 45 -0.02 - 49 0 0 - 6 7 38 23 4 53.4 78 272 -29 - 6 25 28 - 5 49 48 - 6 30 20 - 5 44 55 -0.02 - 48 0 0 - 6 14 39 23 5 7.6 77 273 -30 - 6 32 29 - 5 56 48 - 6 37 21 - 5 51 56 -0.02 - 47 0 0 - 6 21 30 23 5 21.7 76 273 -31 - 6 39 20 - 6 3 40 - 6 44 12 - 5 58 48 -0.02 - 46 0 0 - 6 28 13 23 5 35.7 75 273 -32 - 6 46 2 - 6 10 23 - 6 50 54 - 6 5 31 -0.02 - 45 0 0 - 6 34 46 23 5 49.6 74 273 -33 - 6 52 35 - 6 16 57 - 6 57 27 - 6 12 5 -0.02 - 44 0 0 - 6 41 10 23 6 3.5 73 273 -34 - 6 58 59 - 6 23 21 - 7 3 50 - 6 18 29 -0.02 - 43 0 0 - 6 47 24 23 6 17.2 72 273 -35 - 7 5 13 - 6 29 36 - 7 10 4 - 6 24 44 -0.02 - 42 0 0 - 6 53 29 23 6 30.9 71 273 -36 - 7 11 17 - 6 35 41 - 7 16 9 - 6 30 49 -0.02 - 41 0 0 - 6 59 24 23 6 44.5 70 273 -37 - 7 17 12 - 6 41 36 - 7 22 4 - 6 36 44 -0.02 - 40 0 0 - 7 5 9 23 6 57.9 68 273 -38 - 7 22 57 - 6 47 22 - 7 27 49 - 6 42 30 -0.02 - 39 0 0 - 7 10 45 23 7 11.3 67 273 -39 - 7 28 32 - 6 52 57 - 7 33 24 - 6 48 6 -0.02 - 38 0 0 - 7 16 10 23 7 24.5 66 273 -40 - 7 33 57 - 6 58 23 - 7 38 49 - 6 53 32 -0.02 - 37 0 0 - 7 21 25 23 7 37.6 65 273 -41 - 7 39 12 - 7 3 38 - 7 44 3 - 6 58 47 -0.02 - 36 0 0 - 7 26 30 23 7 50.6 64 273 -42 - 7 44 17 - 7 8 44 - 7 49 8 - 7 3 52 -0.02 - 35 0 0 - 7 31 25 23 8 3.5 63 273 -43 - 7 49 12 - 7 13 39 - 7 54 3 - 7 8 48 -0.02 - 34 0 0 - 7 36 10 23 8 16.2 62 273 -44 - 7 53 56 - 7 18 23 - 7 58 47 - 7 13 32 -0.02 - 33 0 0 - 7 40 44 23 8 28.9 61 273 -44 - 7 58 30 - 7 22 58 - 8 3 20 - 7 18 7 -0.02 - 32 0 0 - 7 45 7 23 8 41.3 60 272 -45 - 8 2 53 - 7 27 21 - 8 7 44 - 7 22 31 -0.02 - 31 0 0 - 7 49 20 23 8 53.7 59 272 -46 - 8 7 6 - 7 31 35 - 8 11 56 - 7 26 44 -0.02 - 30 0 0 - 7 53 23 23 9 5.8 58 272 -47 - 8 11 8 - 7 35 37 - 8 15 59 - 7 30 46 -0.02 - 29 0 0 - 7 57 14 23 9 17.9 57 272 -48 - 8 14 59 - 7 39 29 - 8 19 50 - 7 34 38 -0.02 - 28 0 0 - 8 0 55 23 9 29.8 56 272 -49 - 8 18 40 - 7 43 10 - 8 23 31 - 7 38 20 -0.02 - 27 0 0 - 8 4 25 23 9 41.5 55 272 -50 - 8 22 10 - 7 46 41 - 8 27 1 - 7 41 50 -0.02 - 26 0 0 - 8 7 45 23 9 53.1 54 272 -51 - 8 25 29 - 7 50 0 - 8 30 20 - 7 45 10 -0.02 - 25 0 0 - 8 10 53 23 10 4.5 53 272 -52 - 8 28 38 - 7 53 9 - 8 33 28 - 7 48 18 -0.02 - 24 0 0 - 8 13 51 23 10 15.7 52 272 -53 - 8 31 35 - 7 56 7 - 8 36 25 - 7 51 16 -0.02 - 23 0 0 - 8 16 38 23 10 26.8 51 271 -54 - 8 34 22 - 7 58 54 - 8 39 12 - 7 54 3 -0.02 - 22 0 0 - 8 19 13 23 10 37.7 50 271 -54 - 8 36 57 - 8 1 29 - 8 41 48 - 7 56 39 -0.02 - 21 0 0 - 8 21 38 23 10 48.4 49 271 -55 - 8 39 22 - 8 3 54 - 8 44 12 - 7 59 4 -0.02 - 20 0 0 - 8 23 52 23 10 58.9 48 271 -56 - 8 41 35 - 8 6 8 - 8 46 26 - 8 1 18 -0.02 - 19 0 0 - 8 25 55 23 11 9.3 47 271 -57 - 8 43 38 - 8 8 11 - 8 48 28 - 8 3 21 -0.02 - 18 0 0 - 8 27 47 23 11 19.5 46 271 -58 - 8 45 30 - 8 10 3 - 8 50 20 - 8 5 13 -0.02 - 17 0 0 - 8 29 27 23 11 29.4 45 271 -59 - 8 47 10 - 8 11 44 - 8 52 1 - 8 6 54 -0.02 - 16 0 0 - 8 30 57 23 11 39.2 43 270 -59 - 8 48 40 - 8 13 14 - 8 53 30 - 8 8 23 -0.02 - 15 0 0 - 8 32 16 23 11 48.8 42 270 -60 - 8 49 59 - 8 14 32 - 8 54 49 - 8 9 42 -0.02 - 14 0 0 - 8 33 23 23 11 58.3 41 270 -61 - 8 51 6 - 8 15 40 - 8 55 56 - 8 10 50 -0.02 - 13 0 0 - 8 34 20 23 12 7.5 40 270 -62 - 8 52 3 - 8 16 37 - 8 56 53 - 8 11 47 -0.02 - 12 0 0 - 8 35 5 23 12 16.5 39 270 -63 - 8 52 48 - 8 17 23 - 8 57 39 - 8 12 32 -0.02 - 11 0 0 - 8 35 40 23 12 25.3 38 270 -63 - 8 53 23 - 8 17 57 - 8 58 13 - 8 13 7 -0.02 - 10 0 0 - 8 36 4 23 12 33.9 37 270 -64 - 8 53 47 - 8 18 21 - 8 58 37 - 8 13 31 -0.02 - 9 0 0 - 8 36 16 23 12 42.3 36 269 -65 - 8 53 59 - 8 18 33 - 8 58 49 - 8 13 43 -0.02 - 8 0 0 - 8 36 18 23 12 50.5 35 269 -65 - 8 54 1 - 8 18 35 - 8 58 51 - 8 13 45 -0.02 - 7 0 0 - 8 36 9 23 12 58.5 34 269 -66 - 8 53 52 - 8 18 26 - 8 58 42 - 8 13 36 -0.01 - 6 0 0 - 8 35 49 23 13 6.2 33 269 -67 - 8 53 32 - 8 18 6 - 8 58 22 - 8 13 16 -0.01 - 5 0 0 - 8 35 18 23 13 13.8 32 269 -67 - 8 53 1 - 8 17 35 - 8 57 51 - 8 12 45 -0.01 - 4 0 0 - 8 34 36 23 13 21.1 31 269 -68 - 8 52 19 - 8 16 53 - 8 57 9 - 8 12 3 -0.01 - 3 0 0 - 8 33 44 23 13 28.2 30 269 -68 - 8 51 27 - 8 16 1 - 8 56 17 - 8 11 11 -0.01 - 2 0 0 - 8 32 41 23 13 35.1 29 268 -69 - 8 50 24 - 8 14 58 - 8 55 14 - 8 10 7 -0.01 - 1 0 0 - 8 31 27 23 13 41.8 28 268 -69 - 8 49 10 - 8 13 44 - 8 54 0 - 8 8 53 -0.01 - 0 0 0 - 8 30 2 23 13 48.3 27 268 -70 - 8 47 45 - 8 12 19 - 8 52 36 - 8 7 29 -0.01 1 0 0 - 8 28 27 23 13 54.5 26 268 -70 - 8 46 10 - 8 10 44 - 8 51 1 - 8 5 54 -0.01 2 0 0 - 8 26 42 23 14 0.5 25 268 -71 - 8 44 25 - 8 8 58 - 8 49 15 - 8 4 8 -0.01 3 0 0 - 8 24 46 23 14 6.3 24 268 -71 - 8 42 29 - 8 7 2 - 8 47 19 - 8 2 12 -0.01 4 0 0 - 8 22 39 23 14 11.8 23 268 -71 - 8 40 23 - 8 4 56 - 8 45 13 - 8 0 5 -0.01 5 0 0 - 8 20 22 23 14 17.1 22 267 -71 - 8 38 6 - 8 2 39 - 8 42 56 - 7 57 48 -0.01 6 0 0 - 8 17 55 23 14 22.2 21 267 -72 - 8 35 39 - 8 0 11 - 8 40 29 - 7 55 21 -0.01 7 0 0 - 8 15 18 23 14 27.1 20 267 -72 - 8 33 2 - 7 57 34 - 8 37 52 - 7 52 44 -0.01 8 0 0 - 8 12 31 23 14 31.7 19 267 -72 - 8 30 15 - 7 54 47 - 8 35 5 - 7 49 56 -0.01 9 0 0 - 8 9 33 23 14 36.1 18 267 -72 - 8 27 18 - 7 51 49 - 8 32 8 - 7 46 59 -0.01 10 0 0 - 8 6 26 23 14 40.3 17 267 -72 - 8 24 10 - 7 48 42 - 8 29 1 - 7 43 51 -0.01 11 0 0 - 8 3 9 23 14 44.2 16 267 -72 - 8 20 53 - 7 45 24 - 8 25 44 - 7 40 34 -0.01 12 0 0 - 7 59 42 23 14 47.9 15 266 -71 - 8 17 26 - 7 41 57 - 8 22 17 - 7 37 6 -0.01 13 0 0 - 7 56 5 23 14 51.3 14 266 -71 - 8 13 50 - 7 38 20 - 8 18 40 - 7 33 29 -0.01 14 0 0 - 7 52 19 23 14 54.5 13 266 -71 - 8 10 4 - 7 34 34 - 8 14 54 - 7 29 43 -0.01 15 0 0 - 7 48 23 23 14 57.5 12 266 -71 - 8 6 8 - 7 30 37 - 8 10 59 - 7 25 47 -0.01 16 0 0 - 7 44 17 23 15 0.2 11 266 -70 - 8 2 3 - 7 26 32 - 8 6 54 - 7 21 41 -0.01 17 0 0 - 7 40 3 23 15 2.7 10 266 -70 - 7 57 48 - 7 22 17 - 8 2 39 - 7 17 26 -0.01 18 0 0 - 7 35 39 23 15 5.0 9 266 -69 - 7 53 24 - 7 17 53 - 7 58 15 - 7 13 2 -0.01 19 0 0 - 7 31 6 23 15 7.0 8 265 -69 - 7 48 52 - 7 13 20 - 7 53 43 - 7 8 28 -0.01 20 0 0 - 7 26 23 23 15 8.8 7 265 -68 - 7 44 10 - 7 8 37 - 7 49 1 - 7 3 46 -0.01 21 0 0 - 7 21 32 23 15 10.4 6 265 -68 - 7 39 19 - 7 3 46 - 7 44 10 - 6 58 55 -0.01 22 0 0 - 7 16 32 23 15 11.7 5 265 -67 - 7 34 19 - 6 58 46 - 7 39 10 - 6 53 55 0.00 23 0 0 - 7 11 24 23 15 12.7 4 265 -67 - 7 29 11 - 6 53 37 - 7 34 2 - 6 48 46 0.00 24 0 0 - 7 6 7 23 15 13.6 3 265 -66 - 7 23 54 - 6 48 20 - 7 28 45 - 6 43 28 0.00 25 0 0 - 7 0 41 23 15 14.1 2 265 -66 - 7 18 28 - 6 42 54 - 7 23 20 - 6 38 2 0.01 26 0 0 - 6 55 7 23 15 14.5 1 265 -65 - 7 12 54 - 6 37 19 - 7 17 46 - 6 32 28 0.02 Uncertainty in time = +/- 2 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4 423-134501 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 51 54.4652 DE: -05 32 45.638 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 51 54.4651 DE: -05 32 45.639 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.900,1.100) * V mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (675) Ludmilla asteroid class: approx. diameter [km]: 65 approx. diameter ["]: 0.043 distance from Earth [AU]: 2.07320 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#68 date of fit: 2023 Oct 09 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): 0.011", 0.001", 64.808° remarks: * orbital elements for (675)Ludmilla : Mean anomaly = 302.8144706300 deg Arg. of pericenter = 152.6504540206 deg Long. of node = 263.0034802190 deg Inclination = 9.8080220088 deg Eccentricity = 0.2049203179 Semimajor axis = 2.7673262869 AU Perihelion dist = 2.2002449044 AU Mag: H = 8.16, G = 0.15 Epoch of elements : MJD 60236.95979167 TDT (2023 Oct 19.9598) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#682023Oct09,8.04,2023,10,19,23.036126,0.002032,0.014662,4.545526,-0.611844,0.005343,0.001190,0.000000,0.000000 -60.4101,-5.4563,-169.30,-10.15,False UCAC4 423-134501,20.86512923,-5.5460106,0.00,12.17,0.00,0.0,0,,20.88602887,-5.4562639,1.11,0.00,0,0,0 675,Ludmilla,12.80,65.300,2.0732,0,0,1.292,-2.59,,6.4,0 0,302.6090,2023,10,19,152.6505,263.0035,9.8080,0.20492,2.76733,2.20024,8.12,5.0,0.15 1.136,0.0107,0.0013,65,0.0108,Known errors,1.95,0,-1,-1 20231019_134501,60232.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 20:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org