IOTA/IOTA-ES occultation update for (258) Tyche / UCAC4 518-022477 event on 2023 Sep 22, 05:22 UT Visible from Europe, E Canada Summary ------- On 2023 Sep 22 UT, the 65.5 km diameter asteroid (258) Tyche will occult a 12.4 mag star in the constellation Orion for observers along a path across Europe, E Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.11 mag to 13.01 mag (the magnitude of the asteroid) for at most 3.240 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: 100 * date and approx. time of event: 2023 Sep 22, 05:18 - 2023 Sep 22, 05:27 * geocentric midpoint of event [JD]: 2460209.72421763 * magnitude of target star: 12.38 * magnitude drop [mag]: 1.11 * estimated maximum duration [s]: 3.240 * Moon: 44 % sunlit, 162° distance * Sun: 85° distance * rough path description: Europe, E Canada The occultation path -------------------- * approximate projected width [km]: 73 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.001", 99°) * approx speed of asteroid's shadow [km/s]: 20.2131 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 518-022477 by 258 Tyche on 2023 Sep 22 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 - 92 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 48 35 17 .. .. .. 48 37 28 .... - 91 0 1 48 28 49 5 18 10.9 1 70 -40 48 7 43 48 49 58 48 5 33 48 52 9 .... - 90 0 1 48 43 11 5 18 11.0 1 71 -40 48 22 9 49 4 17 48 19 59 49 6 28 -0.47 - 89 0 1 48 57 10 5 18 11.1 2 72 -40 48 36 11 49 18 13 48 34 2 49 20 24 -0.48 - 88 0 1 49 10 47 5 18 11.3 3 73 -40 48 49 52 49 31 47 48 47 43 49 33 57 -0.49 - 87 0 1 49 24 2 5 18 11.6 3 73 -40 49 3 9 49 44 59 49 1 1 49 47 9 -0.49 - 86 0 1 49 36 55 5 18 11.9 4 74 -40 49 16 5 49 57 49 49 13 57 49 59 58 -0.49 - 85 0 1 49 49 26 5 18 12.2 5 75 -40 49 28 39 50 10 16 49 26 31 50 12 25 -0.49 - 84 0 1 50 1 34 5 18 12.6 6 76 -40 49 40 50 50 22 22 49 38 43 50 24 30 -0.49 - 83 0 1 50 13 21 5 18 13.0 6 76 -39 49 52 40 50 34 6 49 50 33 50 36 14 -0.50 - 82 0 1 50 24 46 5 18 13.5 7 77 -39 50 4 8 50 45 28 50 2 1 50 47 36 -0.50 - 81 0 1 50 35 50 5 18 14.0 8 78 -39 50 15 15 50 56 29 50 13 8 50 58 36 -0.50 - 80 0 1 50 46 32 5 18 14.6 8 79 -39 50 25 59 51 7 8 50 23 53 51 9 15 -0.50 - 79 0 1 50 56 52 5 18 15.2 9 80 -39 50 36 23 51 17 26 50 34 17 51 19 33 -0.50 - 78 0 1 51 6 52 5 18 15.8 9 80 -38 50 46 25 51 27 23 50 44 19 51 29 29 -0.50 - 77 0 1 51 16 30 5 18 16.5 10 81 -38 50 56 6 51 36 58 50 54 0 51 39 5 -0.50 - 76 0 1 51 25 48 5 18 17.2 11 82 -38 51 5 26 51 46 13 51 3 20 51 48 19 -0.50 - 75 0 1 51 34 44 5 18 18.0 11 83 -38 51 14 24 51 55 7 51 12 19 51 57 13 -0.50 - 74 0 1 51 43 20 5 18 18.8 12 84 -38 51 23 3 52 3 41 51 20 58 52 5 46 -0.50 - 73 0 1 51 51 35 5 18 19.6 13 84 -37 51 31 20 52 11 53 51 29 15 52 13 59 -0.50 - 72 0 1 51 59 29 5 18 20.5 13 85 -37 51 39 17 52 19 45 51 37 12 52 21 51 -0.50 - 71 0 0 52 7 3 5 18 21.4 14 86 -37 51 46 53 52 27 17 51 44 48 52 29 22 -0.50 - 70 0 0 52 14 17 5 18 22.4 15 87 -37 51 54 8 52 34 29 51 52 4 52 36 34 -0.50 - 69 0 0 52 21 10 5 18 23.4 15 88 -36 52 1 4 52 41 21 51 59 0 52 43 25 -0.50 - 68 0 0 52 27 44 5 18 24.4 16 88 -36 52 7 39 52 47 52 52 5 36 52 49 56 -0.50 - 67 0 0 52 33 57 5 18 25.5 16 89 -36 52 13 54 52 54 3 52 11 51 52 56 8 -0.50 - 66 0 0 52 39 51 5 18 26.6 17 90 -35 52 19 49 52 59 55 52 17 46 53 1 59 -0.50 - 65 0 0 52 45 24 5 18 27.7 18 91 -35 52 25 25 53 5 27 52 23 22 53 7 31 -0.50 - 64 0 0 52 50 38 5 18 28.9 18 92 -35 52 30 40 53 10 39 52 28 37 53 12 43 -0.50 - 63 0 0 52 55 32 5 18 30.1 19 92 -35 52 35 36 53 15 32 52 33 33 53 17 35 -0.50 - 62 0 0 53 0 6 5 18 31.3 19 93 -34 52 40 11 53 20 5 52 38 9 53 22 8 -0.50 - 61 0 0 53 4 21 5 18 32.6 20 94 -34 52 44 28 53 24 19 52 42 25 53 26 22 -0.50 - 60 0 0 53 8 17 5 18 33.9 21 95 -34 52 48 24 53 28 13 52 46 22 53 30 16 -0.50 - 59 0 0 53 11 53 5 18 35.3 21 96 -33 52 52 1 53 31 48 52 49 59 53 33 51 -0.50 - 58 0 0 53 15 9 5 18 36.6 22 97 -33 52 55 19 53 35 3 52 53 17 53 37 6 -0.50 - 57 0 0 53 18 7 5 18 38.1 22 98 -33 52 58 17 53 38 0 52 56 15 53 40 2 -0.50 - 56 0 0 53 20 45 5 18 39.5 23 98 -32 53 0 56 53 40 37 52 58 54 53 42 40 -0.50 - 55 0 0 53 23 4 5 18 41.0 24 99 -32 53 3 16 53 42 55 53 1 14 53 44 58 -0.50 - 54 0 0 53 25 3 5 18 42.5 24 100 -32 53 5 16 53 44 54 53 3 14 53 46 56 -0.50 - 53 0 0 53 26 44 5 18 44.0 25 101 -31 53 6 57 53 46 34 53 4 55 53 48 36 -0.50 - 52 0 0 53 28 5 5 18 45.6 25 102 -31 53 8 19 53 47 55 53 6 17 53 49 57 -0.50 - 51 0 0 53 29 7 5 18 47.2 26 103 -31 53 9 21 53 48 56 53 7 20 53 50 59 -0.50 - 50 0 0 53 29 50 5 18 48.8 27 104 -30 53 10 5 53 49 39 53 8 3 53 51 42 -0.50 - 49 0 0 53 30 14 5 18 50.5 27 105 -30 53 10 29 53 50 3 53 8 27 53 52 5 -0.50 - 48 0 0 53 30 19 5 18 52.2 28 105 -29 53 10 34 53 50 8 53 8 32 53 52 10 -0.50 - 47 0 0 53 30 5 5 18 53.9 28 106 -29 53 10 19 53 49 53 53 8 18 53 51 56 -0.50 - 46 0 0 53 29 31 5 18 55.7 29 107 -29 53 9 46 53 49 20 53 7 44 53 51 23 -0.50 - 45 0 0 53 28 39 5 18 57.5 29 108 -28 53 8 53 53 48 28 53 6 51 53 50 30 -0.50 - 44 0 0 53 27 27 5 18 59.4 30 109 -28 53 7 41 53 47 16 53 5 39 53 49 19 -0.50 - 43 0 0 53 25 56 5 19 1.2 31 110 -27 53 6 10 53 45 46 53 4 8 53 47 48 -0.50 - 42 0 0 53 24 6 5 19 3.1 31 111 -27 53 4 19 53 43 56 53 2 17 53 45 59 -0.50 - 41 0 0 53 21 56 5 19 5.1 32 112 -27 53 2 9 53 41 47 53 0 7 53 43 50 -0.50 - 40 0 0 53 19 27 5 19 7.1 32 113 -26 52 59 39 53 39 19 52 57 37 53 41 22 -0.50 - 39 0 0 53 16 39 5 19 9.1 33 114 -26 52 56 50 53 36 32 52 54 48 53 38 34 -0.50 - 38 0 0 53 13 32 5 19 11.1 33 115 -25 52 53 42 53 33 25 52 51 40 53 35 28 -0.50 - 37 0 0 53 10 4 5 19 13.2 34 115 -25 52 50 14 53 29 59 52 48 12 53 32 2 -0.50 - 36 0 0 53 6 18 5 19 15.3 35 116 -25 52 46 26 53 26 13 52 44 24 53 28 16 -0.50 - 35 0 0 53 2 11 5 19 17.5 35 117 -24 52 42 18 53 22 8 52 40 16 53 24 11 -0.50 - 34 0 0 52 57 45 5 19 19.7 36 118 -24 52 37 51 53 17 43 52 35 48 53 19 46 -0.50 - 33 0 0 52 52 59 5 19 21.9 36 119 -23 52 33 4 53 12 58 52 31 1 53 15 2 -0.50 - 32 0 0 52 47 53 5 19 24.2 37 120 -23 52 27 56 53 7 54 52 25 54 53 9 58 -0.50 - 31 0 0 52 42 28 5 19 26.5 37 121 -22 52 22 29 53 2 30 52 20 26 53 4 33 -0.50 - 30 0 0 52 36 42 5 19 28.8 38 122 -22 52 16 42 52 56 45 52 14 38 52 58 49 -0.50 - 29 0 0 52 30 35 5 19 31.2 39 123 -21 52 10 34 52 50 41 52 8 30 52 52 45 -0.50 - 28 0 0 52 24 9 5 19 33.7 39 124 -21 52 4 5 52 44 16 52 2 2 52 46 20 -0.50 - 27 0 0 52 17 22 5 19 36.1 40 125 -20 51 57 17 52 37 31 51 55 13 52 39 36 -0.50 - 26 0 0 52 10 15 5 19 38.6 40 126 -20 51 50 7 52 30 26 51 48 3 52 32 30 -0.50 - 25 0 0 52 2 46 5 19 41.2 41 127 -19 51 42 37 52 22 59 51 40 33 52 25 4 -0.50 - 24 0 0 51 54 57 5 19 43.8 41 128 -19 51 34 46 52 15 13 51 32 41 52 17 18 -0.50 - 23 0 0 51 46 47 5 19 46.4 42 129 -18 51 26 33 52 7 5 51 24 29 52 9 10 -0.50 - 22 0 0 51 38 16 5 19 49.1 43 130 -18 51 18 0 51 58 36 51 15 55 52 0 42 -0.50 - 21 0 0 51 29 24 5 19 51.8 43 132 -17 51 9 5 51 49 46 51 7 0 51 51 52 -0.50 - 20 0 0 51 20 10 5 19 54.5 44 133 -17 50 59 49 51 40 35 50 57 44 51 42 41 -0.50 - 19 0 0 51 10 35 5 19 57.3 44 134 -16 50 50 12 51 31 2 50 48 6 51 33 9 -0.50 - 18 0 0 51 0 38 5 20 0.2 45 135 -16 50 40 12 51 21 8 50 38 6 51 23 15 -0.50 - 17 0 0 50 50 20 5 20 3.1 45 136 -15 50 29 51 51 10 52 50 27 45 51 12 59 -0.50 - 16 0 0 50 39 39 5 20 6.0 46 137 -15 50 19 8 51 0 15 50 17 1 51 2 22 -0.50 - 15 0 0 50 28 36 5 20 9.0 47 138 -14 50 8 2 50 49 15 50 5 55 50 51 22 -0.50 - 14 0 0 50 17 12 5 20 12.1 47 139 -14 49 56 34 50 37 53 49 54 27 50 40 0 -0.50 - 13 0 0 50 5 24 5 20 15.1 48 141 -13 49 44 44 50 26 8 49 42 37 50 28 16 -0.50 - 12 0 0 49 53 14 5 20 18.3 48 142 -13 49 32 31 50 14 1 49 30 23 50 16 10 -0.50 - 11 0 0 49 40 42 5 20 21.5 49 143 -12 49 19 55 50 1 32 49 17 47 50 3 40 -0.50 - 10 0 0 49 27 46 5 20 24.7 49 144 -11 49 6 57 49 48 39 49 4 48 49 50 48 -0.50 - 9 0 0 49 14 27 5 20 28.0 50 146 -11 48 53 35 49 35 24 48 51 26 49 37 33 -0.50 - 8 0 0 49 0 46 5 20 31.3 51 147 -10 48 39 50 49 21 46 48 37 41 49 23 55 -0.50 - 7 0 0 48 46 41 5 20 34.7 51 148 -10 48 25 42 49 7 44 48 23 32 49 9 54 -0.50 - 6 0 0 48 32 12 5 20 38.1 52 149 -9 48 11 10 48 53 19 48 9 0 48 55 29 -0.50 - 5 0 0 48 17 20 5 20 41.6 52 151 -8 47 56 15 48 38 30 47 54 5 48 40 41 -0.50 - 4 0 0 48 2 5 5 20 45.2 53 152 -8 47 40 55 48 23 18 47 38 45 48 25 29 -0.50 - 3 0 0 47 46 25 5 20 48.7 53 154 -7 47 25 12 48 7 42 47 23 2 48 9 53 -0.50 - 2 0 0 47 30 21 5 20 52.4 54 155 -6 47 9 5 47 51 42 47 6 54 47 53 54 -0.50 - 1 0 0 47 13 54 5 20 56.1 54 156 -6 46 52 34 47 35 18 46 50 23 47 37 30 -0.50 0 0 0 46 57 2 5 20 59.9 55 158 -5 46 35 39 47 18 29 46 33 27 47 20 42 -0.50 1 0 0 46 39 46 5 21 3.7 55 159 -4 46 18 19 47 1 17 46 16 7 47 3 30 -0.50 2 0 0 46 22 6 5 21 7.5 56 161 -4 46 0 35 46 43 40 45 58 23 46 45 53 -0.50 3 0 0 46 4 1 5 21 11.5 56 163 -3 45 42 27 46 25 39 45 40 14 46 27 53 -0.50 4 0 0 45 45 31 5 21 15.4 57 164 -2 45 23 54 46 7 13 45 21 41 46 9 27 -0.50 5 0 0 45 26 38 5 21 19.5 57 166 -2 45 4 57 45 48 23 45 2 43 45 50 37 -0.50 6 0 0 45 7 19 5 21 23.6 58 168 -1 44 45 35 45 29 8 44 43 21 45 31 23 -0.50 7 0 0 44 47 36 5 21 27.7 58 169 0 44 25 48 45 9 29 44 23 34 45 11 44 -0.50 8 0 0 44 27 29 5 21 31.9 59 171 0 44 5 37 44 49 25 44 3 23 44 51 41 -0.50 9 0 0 44 6 57 5 21 36.2 59 173 1 43 45 2 44 28 57 43 42 47 44 31 12 -0.50 10 0 0 43 46 0 5 21 40.5 60 175 2 43 24 2 44 8 3 43 21 47 44 10 20 -0.50 11 0 0 43 24 39 5 21 44.9 60 177 3 43 2 37 43 46 46 43 0 22 43 49 3 -0.50 12 0 0 43 2 54 5 21 49.3 60 179 3 42 40 48 43 25 4 42 38 32 43 27 21 -0.50 13 0 0 42 40 44 5 21 53.8 61 181 4 42 18 35 43 2 58 42 16 19 43 5 15 -0.50 14 0 0 42 18 10 5 21 58.3 61 183 5 41 55 58 42 40 27 41 53 41 42 42 45 -0.50 15 0 0 41 55 12 5 22 2.9 61 185 6 41 32 57 42 17 32 41 30 40 42 19 50 -0.50 16 0 0 41 31 50 5 22 7.6 62 187 6 41 9 32 41 54 14 41 7 14 41 56 32 -0.50 17 0 0 41 8 5 5 22 12.2 62 190 7 40 45 43 41 30 31 40 43 25 41 32 50 -0.50 18 0 0 40 43 56 5 22 17.0 62 192 8 40 21 31 41 6 25 40 19 13 41 8 44 -0.50 19 0 0 40 19 24 5 22 21.8 63 194 9 39 56 56 40 41 56 39 54 37 40 44 16 -0.50 20 0 0 39 54 28 5 22 26.6 63 196 10 39 31 58 40 17 4 39 29 39 40 19 24 -0.50 21 0 0 39 29 10 5 22 31.5 63 199 11 39 6 37 39 51 49 39 4 18 39 54 9 -0.50 22 0 0 39 3 30 5 22 36.5 63 201 11 38 40 54 39 26 11 38 38 35 39 28 32 -0.50 23 0 0 38 37 28 5 22 41.4 63 204 12 38 14 49 39 0 12 38 12 29 39 2 32 -0.50 24 0 0 38 11 4 5 22 46.5 63 206 13 37 48 22 38 33 50 37 46 3 38 36 11 -0.50 25 0 0 37 44 19 5 22 51.5 63 209 14 37 21 35 38 7 8 37 19 15 38 9 29 -0.50 26 0 0 37 17 13 5 22 56.7 63 211 15 36 54 27 37 40 5 36 52 7 37 42 26 -0.50 27 0 0 36 49 47 5 23 1.8 63 213 16 36 26 59 37 12 41 36 24 38 37 15 2 -0.50 28 0 0 36 22 2 5 23 7.0 63 216 17 35 59 11 36 44 57 35 56 51 36 47 19 -0.50 29 0 0 35 53 57 5 23 12.2 63 218 18 35 31 5 36 16 55 35 28 44 36 19 17 -0.50 30 0 0 35 25 34 5 23 17.4 63 221 19 35 2 39 35 48 33 35 0 18 35 50 55 -0.51 31 0 0 34 56 52 5 23 22.7 63 223 19 34 33 56 35 19 54 34 31 35 35 22 16 -0.51 32 0 0 34 27 54 5 23 28.0 62 226 20 34 4 56 34 50 57 34 2 35 34 53 19 -0.51 33 0 0 33 58 38 5 23 33.4 62 228 21 33 35 39 34 21 43 33 33 18 34 24 5 -0.51 34 0 0 33 29 7 5 23 38.7 62 230 22 33 6 7 33 52 13 33 3 45 33 54 35 -0.51 35 0 0 32 59 20 5 23 44.1 61 233 23 32 36 19 33 22 27 32 33 57 33 24 50 -0.51 36 0 0 32 29 20 5 23 49.4 61 235 24 32 6 17 32 52 27 32 3 55 32 54 50 -0.51 37 0 0 31 59 5 5 23 54.8 61 237 25 31 36 2 32 22 14 31 33 40 32 24 37 -0.51 38 0 0 31 28 38 5 24 0.2 60 239 26 31 5 34 31 51 47 31 3 12 31 54 10 -0.51 39 0 0 30 57 59 5 24 5.6 60 241 27 30 34 54 31 21 8 30 32 32 31 23 32 -0.51 40 0 0 30 27 8 5 24 11.0 59 243 28 30 4 4 30 50 19 30 1 42 30 52 42 -0.51 41 0 0 29 56 8 5 24 16.4 59 245 29 29 33 3 30 19 18 29 30 41 30 21 42 -0.51 42 0 0 29 24 58 5 24 21.8 58 247 30 29 1 53 29 48 9 28 59 31 29 50 32 -0.51 43 0 0 28 53 40 5 24 27.2 57 249 31 28 30 35 29 16 51 28 28 13 29 19 14 -0.51 44 0 0 28 22 15 5 24 32.6 57 250 32 27 59 10 28 45 25 27 56 48 28 47 48 -0.51 45 0 0 27 50 43 5 24 37.9 56 252 33 27 27 39 28 13 53 27 25 17 28 16 16 -0.51 46 0 0 27 19 6 5 24 43.3 55 254 34 26 56 3 27 42 15 26 53 41 27 44 38 -0.51 47 0 0 26 47 25 5 24 48.6 55 255 35 26 24 22 27 10 33 26 22 0 27 12 56 -0.51 48 0 0 26 15 40 5 24 53.8 54 257 36 25 52 38 26 38 47 25 50 17 26 41 10 -0.51 49 0 0 25 43 53 5 24 59.1 53 258 37 25 20 52 26 6 59 25 18 31 26 9 22 -0.51 50 0 0 25 12 5 5 25 4.3 52 259 38 24 49 5 25 35 10 24 46 44 25 37 32 -0.51 51 0 0 24 40 16 5 25 9.5 51 261 39 24 17 18 25 3 20 24 14 57 25 5 42 -0.51 52 0 0 24 8 29 5 25 14.6 51 262 40 23 45 32 24 31 31 23 43 11 24 33 53 -0.51 53 0 0 23 36 43 5 25 19.7 50 263 42 23 13 48 23 59 43 23 11 27 24 2 5 -0.51 54 0 0 23 5 0 5 25 24.7 49 264 43 22 42 6 23 27 58 22 39 46 23 30 20 -0.51 55 0 0 22 33 20 5 25 29.6 48 265 44 22 10 29 22 56 17 22 8 9 22 58 39 -0.51 56 0 0 22 1 46 5 25 34.6 47 266 45 21 38 57 22 24 41 21 36 37 22 27 2 -0.51 57 0 0 21 30 18 5 25 39.4 46 267 46 21 7 31 21 53 10 21 5 11 21 55 32 -0.51 58 0 0 20 58 57 5 25 44.2 45 268 47 20 36 12 21 21 47 20 33 52 21 24 8 -0.51 59 0 0 20 27 44 5 25 48.9 44 269 48 20 5 2 20 50 31 20 2 42 20 52 52 -0.52 60 0 0 19 56 40 5 25 53.5 43 270 49 19 34 0 20 19 25 19 31 40 20 21 45 -0.52 61 0 0 19 25 46 5 25 58.1 42 271 50 19 3 9 19 48 28 19 0 49 19 50 48 -0.52 62 0 0 18 55 3 5 26 2.5 41 272 51 18 32 28 19 17 42 18 30 9 19 20 2 -0.52 63 0 0 18 24 31 5 26 6.9 40 272 52 18 2 0 18 47 8 17 59 41 18 49 28 -0.52 64 0 0 17 54 13 5 26 11.3 39 273 53 17 31 44 18 16 47 17 29 26 18 19 6 -0.52 65 0 0 17 24 8 5 26 15.5 38 274 55 17 1 42 17 46 39 16 59 24 17 48 58 -0.52 66 0 0 16 54 18 5 26 19.6 37 274 56 16 31 55 17 16 46 16 29 38 17 19 5 -0.52 67 0 0 16 24 44 5 26 23.6 36 275 57 16 2 24 16 47 8 16 0 6 16 49 27 -0.52 68 0 0 15 55 25 5 26 27.6 35 275 58 15 33 9 16 17 47 15 30 52 16 20 5 -0.52 69 0 0 15 26 24 5 26 31.4 34 276 59 15 4 11 15 48 42 15 1 54 15 51 0 -0.52 70 0 0 14 57 41 5 26 35.1 33 277 60 14 35 31 15 19 56 14 33 15 15 22 13 -0.52 71 0 0 14 29 16 5 26 38.8 32 277 61 14 7 10 14 51 28 14 4 54 14 53 45 -0.52 72 0 0 14 1 11 5 26 42.3 31 277 62 13 39 8 14 23 19 13 36 52 14 25 36 -0.52 73 0 0 13 33 26 5 26 45.7 30 278 63 13 11 27 13 55 31 13 9 11 13 57 47 -0.52 74 0 0 13 6 2 5 26 49.1 29 278 64 12 44 6 13 28 3 12 41 51 13 30 19 -0.52 75 0 0 12 39 0 5 26 52.3 28 279 65 12 17 7 13 0 57 12 14 52 13 3 13 -0.52 76 0 0 12 12 19 5 26 55.4 27 279 67 11 50 30 12 34 13 11 48 15 12 36 29 -0.52 77 0 0 11 46 1 5 26 58.3 26 279 68 11 24 15 12 7 52 11 22 1 12 10 7 -0.52 78 0 0 11 20 7 5 27 1.2 25 280 69 10 58 25 11 41 54 10 56 11 11 44 9 -0.52 79 0 0 10 54 37 5 27 3.9 24 280 70 10 32 58 11 16 20 10 30 44 11 18 34 -0.53 80 0 0 10 29 31 5 27 6.6 23 280 71 10 7 55 10 51 10 10 5 42 10 53 24 -0.53 81 0 0 10 4 49 5 27 9.1 22 281 72 9 43 17 10 26 26 9 41 5 10 28 39 -0.53 82 0 0 9 40 34 5 27 11.5 21 281 73 9 19 5 10 2 7 9 16 53 10 4 20 -0.53 83 0 0 9 16 44 5 27 13.8 20 281 74 8 55 19 9 38 13 8 53 7 9 40 26 -0.53 84 0 0 8 53 20 5 27 16.0 19 281 75 8 31 59 9 14 46 8 29 47 9 16 59 -0.53 85 0 0 8 30 23 5 27 18.0 18 282 76 8 9 5 8 51 46 8 6 54 8 53 58 -0.53 86 0 0 8 7 53 5 27 19.9 17 282 77 7 46 39 8 29 13 7 44 28 8 31 24 -0.53 87 0 0 7 45 51 5 27 21.7 15 282 78 7 24 40 8 7 7 7 22 29 8 9 18 -0.53 88 0 0 7 24 17 5 27 23.4 14 282 79 7 3 8 7 45 29 7 0 58 7 47 40 -0.54 89 0 0 7 3 10 5 27 25.0 13 282 80 6 42 5 7 24 19 6 39 55 7 26 30 -0.54 90 0 0 6 42 32 5 27 26.4 12 282 81 6 21 30 7 3 38 6 19 21 7 5 48 -0.54 91 0 0 6 22 23 5 27 27.8 11 283 82 6 1 24 6 43 25 5 59 15 6 45 35 -0.54 92 0 0 6 2 42 5 27 29.0 10 283 83 5 41 47 6 23 42 5 39 38 6 25 51 -0.55 93 0 0 5 43 31 5 27 30.1 9 283 84 5 22 39 6 4 27 5 20 31 6 6 37 -0.55 94 0 0 5 24 49 5 27 31.1 8 283 84 5 4 0 5 45 43 5 1 52 5 47 52 -0.55 95 0 0 5 6 37 5 27 31.9 7 283 85 4 45 51 5 27 27 4 43 43 5 29 36 -0.56 96 0 0 4 48 55 5 27 32.7 6 283 86 4 28 12 5 9 42 4 26 4 5 11 50 -0.57 97 0 0 4 31 42 5 27 33.3 5 283 86 4 11 2 4 52 27 4 8 55 4 54 35 -0.58 98 0 0 4 15 0 5 27 33.8 4 283 86 3 54 23 4 35 42 3 52 16 4 37 50 -0.60 99 0 0 3 58 49 5 27 34.2 3 283 86 3 38 14 4 19 27 3 36 7 4 21 35 -0.63 100 0 0 3 43 7 5 27 34.4 2 283 85 3 22 35 4 3 43 3 20 29 4 5 50 -0.69 101 0 0 3 27 56 5 27 34.6 1 283 84 3 7 27 3 48 30 3 5 21 3 50 37 -0.90 Uncertainty in time = +/- 1 secs Prediction of 2023 Aug 27.0 Data for the target star ------------------------ * name: UCAC4 518-022477 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 14 01.0980 DE: +13 28 14.810 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 14 01.0982 DE: +13 28 14.810 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (258) Tyche asteroid class: approx. diameter [km]: 66 approx. diameter ["]: 0.042 distance from Earth [AU]: 2.16100 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#94 date of fit: 2023 Aug 22 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): 0.008", 0.001", 99.121° remarks: * orbital elements for (258)Tyche : Mean anomaly = 45.2835442221 deg Arg. of pericenter = 155.5067065600 deg Long. of node = 207.5377755621 deg Inclination = 14.3292971233 deg Eccentricity = 0.2054017873 Semimajor axis = 2.6149237859 AU Perihelion dist = 2.0778137666 AU Mag: H = 8.35, G = 0.23 Epoch of elements : MJD 60209.22423611 TDT (2023 Sep 22.2242) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#942023Aug22,3.24,2023,9,22,5.381223,0.176546,0.411050,10.481772,-4.504849,-0.005473,0.000077,0.000000,0.000000 12.2980,13.4658,97.51,0.41,False UCAC4 518-022477,6.23363831,13.4707806,0.00,12.38,0.00,0.0,0,,6.25583885,13.4657590,1.11,0.00,0,0,0 258,Tyche,13.01,65.500,2.1610,0,0,2.924,-18.34,,3.6,0 0,45.2313,2023,9,22,155.5067,207.5378,14.3293,0.20540,2.61492,2.07781,8.35,5.0,0.15 1.051,0.0083,0.0007,99,0.0084,Known errors,-1.00,0,-1,-1 20230922_022477,60182.99 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 26, 23:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org