IOTA/IOTA-ES occultation update for (11193) Merida / G183403.3-230659 event on 2024 Oct 13, 17:08 UT Visible from Summary ------- On 2024 Oct 13 UT, the 13.0912799525922 km diameter asteroid (11193) Merida will occult a 10.5 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.02 mag to 19.51 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 Oct 13, 17:05 - 2024 Oct 13, 17:11 * geocentric midpoint of event [JD]: 2460597.21434458 * magnitude of target star: 10.49 * magnitude drop [mag]: 9.02 * estimated maximum duration [s]: 1.060 * Moon: 81 % sunlit, 51° distance * Sun: 77° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 41 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.002", 88°) * approx speed of asteroid's shadow [km/s]: 20.6850 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of G183403.3-230659 by 11193 Merida on 2024 Oct 13 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 - 60 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 49 52 45 .. .. .. ... .. .. ... .. .. .... - 59 0 0 49 45 33 17 5 56.9 1 128 29 49 31 37 49 59 35 49 23 8 50 8 16 49 42 38 49 48 28 .... - 58 0 0 49 16 2 17 5 57.0 1 129 30 49 2 12 49 29 58 48 53 46 49 38 35 49 13 8 49 18 55 -0.94 - 57 0 0 48 46 48 17 5 57.3 2 130 30 48 33 4 49 0 39 48 24 42 49 9 12 48 43 56 48 49 41 -1.17 - 56 0 0 48 17 54 17 5 57.7 3 130 30 48 4 15 48 31 38 47 55 56 48 40 8 48 15 3 48 20 45 -1.28 - 55 0 0 47 49 19 17 5 58.2 4 131 30 47 35 46 48 2 58 47 27 30 48 11 23 47 46 29 47 52 9 -1.35 - 54 0 0 47 21 4 17 5 58.8 5 132 30 47 7 37 47 34 37 46 59 25 47 43 0 47 18 16 47 23 53 -1.39 - 53 0 0 46 53 11 17 5 59.5 6 133 30 46 39 50 47 6 39 46 31 41 47 14 58 46 50 24 46 55 59 -1.42 - 52 0 0 46 25 41 17 6 0.4 6 133 30 46 12 25 46 39 3 46 4 19 46 47 19 46 22 55 46 28 28 -1.44 - 51 0 0 45 58 34 17 6 1.4 7 134 30 45 45 23 46 11 51 45 37 21 46 20 3 45 55 49 46 1 20 -1.46 - 50 0 0 45 31 52 17 6 2.5 8 135 30 45 18 46 45 45 4 45 10 47 45 53 12 45 29 8 45 34 36 -1.48 - 49 0 0 45 5 35 17 6 3.7 9 136 30 44 52 34 45 18 41 44 44 38 45 26 47 45 2 52 45 8 18 -1.49 - 48 0 0 44 39 44 17 6 5.1 10 136 30 44 26 48 44 52 45 44 18 55 45 0 48 44 37 2 44 42 26 -1.50 - 47 0 0 44 14 20 17 6 6.5 10 137 30 44 1 29 44 27 16 43 53 38 44 35 15 44 11 39 44 17 1 -1.51 - 46 0 0 43 49 23 17 6 8.1 11 138 30 43 36 37 44 2 15 43 28 50 44 10 11 43 46 44 43 52 4 -1.51 - 45 0 0 43 24 55 17 6 9.8 12 139 30 43 12 14 43 37 42 43 4 29 43 45 35 43 22 16 43 27 35 -1.52 - 44 0 0 43 0 56 17 6 11.6 13 139 29 42 48 19 43 13 38 42 40 37 43 21 29 42 58 18 43 3 35 -1.53 - 43 0 0 42 37 27 17 6 13.6 14 140 29 42 24 55 42 50 5 42 17 15 42 57 52 42 34 50 42 40 4 -1.53 - 42 0 0 42 14 28 17 6 15.6 14 141 29 42 2 0 42 27 1 41 54 23 42 34 46 42 11 52 42 17 4 -1.54 - 41 0 0 41 52 0 17 6 17.8 15 142 29 41 39 36 42 4 29 41 32 2 42 12 11 41 49 25 41 54 36 -1.54 - 40 0 0 41 30 4 17 6 20.1 16 142 28 41 17 44 41 42 28 41 10 12 41 50 8 41 27 29 41 32 38 -1.54 - 39 0 0 41 8 39 17 6 22.4 17 143 28 40 56 23 41 21 0 40 48 54 41 28 37 41 6 6 41 11 13 -1.55 - 38 0 0 40 47 48 17 6 24.9 17 144 28 40 35 36 41 0 4 40 28 8 41 7 39 40 45 15 40 50 21 -1.55 - 37 0 0 40 27 29 17 6 27.5 18 145 27 40 15 21 40 39 42 40 7 56 40 47 14 40 24 57 40 30 2 -1.55 - 36 0 0 40 7 44 17 6 30.2 19 146 27 39 55 40 40 19 54 39 48 17 40 27 24 40 5 13 40 10 16 -1.56 - 35 0 0 39 48 34 17 6 33.0 19 146 27 39 36 33 40 0 40 39 29 12 40 8 7 39 46 3 39 51 5 -1.56 - 34 0 0 39 29 58 17 6 35.9 20 147 26 39 18 0 39 42 0 39 10 41 39 49 26 39 27 28 39 32 28 -1.56 - 33 0 0 39 11 57 17 6 38.9 21 148 26 39 0 2 39 23 56 38 52 45 39 31 19 39 9 28 39 14 26 -1.56 - 32 0 0 38 54 31 17 6 41.9 21 149 25 38 42 40 39 6 27 38 35 25 39 13 48 38 52 3 38 57 0 -1.57 - 31 0 0 38 37 41 17 6 45.1 22 150 25 38 25 53 38 49 34 38 18 40 38 56 53 38 35 13 38 40 9 -1.57 - 30 0 0 38 21 27 17 6 48.4 23 151 24 38 9 42 38 33 17 38 2 31 38 40 35 38 19 0 38 23 55 -1.57 - 29 0 0 38 5 50 17 6 51.7 23 151 24 37 54 7 38 17 37 37 46 58 38 24 53 38 3 24 38 8 17 -1.57 - 28 0 0 37 50 50 17 6 55.1 24 152 23 37 39 10 38 2 34 37 32 2 38 9 48 37 48 24 37 53 16 -1.58 - 27 0 0 37 36 26 17 6 58.6 25 153 23 37 24 49 37 48 8 37 17 43 37 55 21 37 34 1 37 38 52 -1.58 - 26 0 0 37 22 40 17 7 2.2 25 154 22 37 11 5 37 34 19 37 4 0 37 41 31 37 20 15 37 25 6 -1.58 - 25 0 0 37 9 32 17 7 5.9 26 155 21 36 57 59 37 21 9 36 50 56 37 28 18 37 7 7 37 11 57 -1.58 - 24 0 0 36 57 1 17 7 9.6 26 156 21 36 45 31 37 8 36 36 38 29 37 15 44 36 54 37 36 59 26 -1.58 - 23 0 0 36 45 9 17 7 13.4 27 157 20 36 33 40 36 56 41 36 26 40 37 3 48 36 42 45 36 47 33 -1.58 - 22 0 0 36 33 55 17 7 17.2 27 158 20 36 22 28 36 45 25 36 15 28 36 52 31 36 31 32 36 36 18 -1.59 - 21 0 0 36 23 19 17 7 21.2 28 159 19 36 11 54 36 34 48 36 4 56 36 41 52 36 20 56 36 25 42 -1.59 - 20 0 0 36 13 22 17 7 25.1 28 160 18 36 1 59 36 24 49 35 55 1 36 31 52 36 11 0 36 15 45 -1.59 - 19 0 0 36 4 4 17 7 29.2 29 161 18 35 52 42 36 15 29 35 45 46 36 22 32 36 1 42 36 6 26 -1.59 - 18 0 0 35 55 25 17 7 33.2 29 162 17 35 44 5 36 6 48 35 37 9 36 13 50 35 53 3 35 57 47 -1.59 - 17 0 0 35 47 24 17 7 37.4 29 163 16 35 36 6 35 58 47 35 29 11 36 5 47 35 45 3 35 49 46 -1.59 - 16 0 0 35 40 3 17 7 41.6 30 164 15 35 28 46 35 51 25 35 21 52 35 58 24 35 37 42 35 42 25 -1.59 - 15 0 0 35 33 22 17 7 45.8 30 165 15 35 22 6 35 44 42 35 15 12 35 51 41 35 31 1 35 35 43 -1.59 - 14 0 0 35 27 20 17 7 50.1 30 166 14 35 16 5 35 38 39 35 9 12 35 45 38 35 24 59 35 29 41 -1.60 - 13 0 0 35 21 58 17 7 54.4 31 167 13 35 10 44 35 33 16 35 3 51 35 40 14 35 19 37 35 24 19 -1.60 - 12 0 0 35 17 16 17 7 58.7 31 168 12 35 6 2 35 28 33 34 59 10 35 35 30 35 14 55 35 19 36 -1.60 - 11 0 0 35 13 13 17 8 3.1 31 169 12 35 2 0 35 24 29 34 55 9 35 31 26 35 10 53 35 15 34 -1.60 - 10 0 0 35 9 50 17 8 7.5 31 170 11 34 58 38 35 21 6 34 51 47 35 28 3 35 7 30 35 12 11 -1.60 - 9 0 0 35 7 7 17 8 11.9 31 171 10 34 55 55 35 18 23 34 49 5 35 25 19 35 4 47 35 9 28 -1.60 - 8 0 0 35 5 4 17 8 16.3 32 172 9 34 53 53 35 16 19 34 47 2 35 23 15 35 2 44 35 7 24 -1.60 - 7 0 0 35 3 41 17 8 20.8 32 173 9 34 52 30 35 14 56 34 45 39 35 21 52 35 1 21 35 6 1 -1.60 - 6 0 0 35 2 58 17 8 25.2 32 175 8 34 51 47 35 14 13 34 44 57 35 21 9 35 0 38 35 5 18 -1.60 - 5 0 0 35 2 55 17 8 29.7 32 176 7 34 51 44 35 14 10 34 44 53 35 21 6 35 0 35 35 5 15 -1.60 - 4 0 0 35 3 32 17 8 34.2 32 177 6 34 52 20 35 14 47 34 45 30 35 21 43 35 1 12 35 5 52 -1.60 - 3 0 0 35 4 49 17 8 38.7 32 178 5 34 53 37 35 16 4 34 46 47 35 23 0 35 2 29 35 7 9 -1.60 - 2 0 0 35 6 46 17 8 43.2 32 179 4 34 55 34 35 18 1 34 48 43 35 24 58 35 4 26 35 9 6 -1.60 - 1 0 0 35 9 23 17 8 47.7 32 180 4 34 58 11 35 20 39 34 51 20 35 27 35 35 7 3 35 11 43 -1.61 0 0 0 35 12 40 17 8 52.2 32 181 3 35 1 27 35 23 56 34 54 36 35 30 53 35 10 20 35 15 1 -1.61 1 0 0 35 16 37 17 8 56.6 32 182 2 35 5 23 35 27 54 34 58 32 35 34 52 35 14 16 35 18 58 -1.61 2 0 0 35 21 14 17 9 1.1 32 183 1 35 9 59 35 32 32 35 3 7 35 39 30 35 18 53 35 23 35 -1.61 3 0 0 35 26 30 17 9 5.6 31 184 0 35 15 15 35 37 49 35 8 22 35 44 48 35 24 9 35 28 51 -1.61 4 0 0 35 32 27 17 9 10.0 31 186 0 35 21 10 35 43 47 35 14 17 35 50 46 35 30 6 35 34 48 -1.61 5 0 0 35 39 3 17 9 14.4 31 187 -1 35 27 45 35 50 24 35 20 51 35 57 24 35 36 41 35 41 24 -1.61 6 0 0 35 46 18 17 9 18.8 31 188 -2 35 34 59 35 57 40 35 28 5 36 4 41 35 43 56 35 48 40 -1.61 7 0 0 35 54 13 17 9 23.1 31 189 -3 35 42 53 36 5 37 35 35 57 36 12 38 35 51 51 35 56 35 -1.61 8 0 0 36 2 47 17 9 27.5 30 190 -4 35 51 25 36 14 12 35 44 29 36 21 15 36 0 25 36 5 9 -1.61 9 0 0 36 12 0 17 9 31.7 30 191 -5 36 0 37 36 23 27 35 53 40 36 30 31 36 9 38 36 14 23 -1.61 10 0 0 36 21 53 17 9 36.0 30 192 -5 36 10 28 36 33 21 36 3 29 36 40 26 36 19 30 36 24 16 -1.61 11 0 0 36 32 24 17 9 40.2 29 193 -6 36 20 57 36 43 54 36 13 57 36 51 0 36 30 0 36 34 47 -1.61 12 0 0 36 43 33 17 9 44.4 29 194 -7 36 32 5 36 55 6 36 25 4 37 2 13 36 41 10 36 45 57 -1.61 13 0 0 36 55 22 17 9 48.5 29 195 -8 36 43 51 37 6 56 36 36 49 37 14 5 36 52 57 36 57 46 -1.61 14 0 0 37 7 48 17 9 52.5 28 196 -9 36 56 15 37 19 25 36 49 12 37 26 35 37 5 23 37 10 13 -1.61 15 0 0 37 20 52 17 9 56.5 28 197 -10 37 9 17 37 32 32 37 2 12 37 39 43 37 18 27 37 23 18 -1.61 16 0 0 37 34 35 17 10 0.5 27 198 -10 37 22 57 37 46 17 37 15 51 37 53 29 37 32 9 37 37 1 -1.61 17 0 0 37 48 55 17 10 4.4 27 199 -11 37 37 15 38 0 39 37 30 7 38 7 54 37 46 29 37 51 21 -1.61 18 0 0 38 3 52 17 10 8.2 26 200 -12 37 52 9 38 15 39 37 45 0 38 22 55 38 1 26 38 6 19 -1.61 19 0 0 38 19 26 17 10 11.9 26 201 -13 38 7 41 38 31 16 38 0 29 38 38 34 38 16 59 38 21 54 -1.61 20 0 0 38 35 37 17 10 15.6 25 202 -14 38 23 49 38 47 30 38 16 36 38 54 50 38 33 9 38 38 5 -1.61 21 0 0 38 52 24 17 10 19.2 25 203 -14 38 40 32 39 4 20 38 33 18 39 11 41 38 49 56 38 54 53 -1.61 22 0 0 39 9 47 17 10 22.8 24 204 -15 38 57 52 39 21 46 38 50 35 39 29 9 39 7 18 39 12 16 -1.61 23 0 0 39 27 45 17 10 26.2 24 205 -16 39 15 47 39 39 48 39 8 28 39 47 13 39 25 15 39 30 15 -1.61 24 0 0 39 46 19 17 10 29.6 23 205 -17 39 34 18 39 58 25 39 26 57 40 5 53 39 43 48 39 48 50 -1.61 25 0 0 40 5 28 17 10 32.9 22 206 -18 39 53 23 40 17 37 39 46 0 40 25 7 40 2 56 40 7 59 -1.61 26 0 0 40 25 11 17 10 36.1 22 207 -18 40 13 2 40 37 24 40 5 37 40 44 56 40 22 39 40 27 43 -1.61 27 0 0 40 45 28 17 10 39.2 21 208 -19 40 33 15 40 57 45 40 25 48 41 5 19 40 42 55 40 48 1 -1.61 28 0 0 41 6 18 17 10 42.2 20 209 -20 40 54 2 41 18 39 40 46 32 41 26 16 41 3 45 41 8 52 -1.61 29 0 0 41 27 42 17 10 45.1 20 210 -20 41 15 22 41 40 7 41 7 50 41 47 47 41 25 7 41 30 17 -1.61 30 0 0 41 49 38 17 10 47.9 19 211 -21 41 37 14 42 2 7 41 29 39 42 9 49 41 47 2 41 52 13 -1.61 31 0 0 42 12 6 17 10 50.6 18 211 -22 41 59 37 42 24 39 41 52 0 42 32 24 42 9 29 42 14 42 -1.61 32 0 0 42 35 5 17 10 53.3 18 212 -23 42 22 32 42 47 42 42 14 52 42 55 30 42 32 27 42 37 42 -1.61 33 0 0 42 58 34 17 10 55.8 17 213 -23 42 45 57 43 11 17 42 38 15 43 19 7 42 55 56 43 1 13 -1.62 34 0 0 43 22 34 17 10 58.2 16 214 -24 43 9 52 43 35 21 43 2 7 43 43 14 43 19 55 43 25 13 -1.62 35 0 0 43 47 3 17 11 0.5 15 215 -24 43 34 16 43 59 55 43 26 28 44 7 51 43 44 23 43 49 43 -1.62 36 0 0 44 12 0 17 11 2.6 15 216 -25 43 59 9 44 24 57 43 51 18 44 32 56 44 9 19 44 14 42 -1.62 37 0 0 44 37 26 17 11 4.7 14 216 -26 44 24 30 44 50 27 44 16 36 44 58 30 44 34 44 44 40 8 -1.62 38 0 0 45 3 18 17 11 6.7 13 217 -26 44 50 17 45 16 25 44 42 20 45 24 31 45 0 35 45 6 1 -1.62 39 0 0 45 29 37 17 11 8.5 12 218 -27 45 16 31 45 42 49 45 8 31 45 50 58 45 26 53 45 32 21 -1.62 40 0 0 45 56 21 17 11 10.2 11 219 -27 45 43 10 46 9 38 45 35 7 46 17 51 45 53 36 45 59 7 -1.62 41 0 0 46 23 30 17 11 11.9 11 219 -28 46 10 13 46 36 52 46 2 7 46 45 8 46 20 43 46 26 17 -1.63 42 0 0 46 51 2 17 11 13.4 10 220 -28 46 37 40 47 4 31 46 29 31 47 12 50 46 48 15 46 53 50 -1.63 43 0 0 47 18 58 17 11 14.7 9 221 -29 47 5 30 47 32 32 46 57 18 47 40 54 47 16 9 47 21 47 -1.63 44 0 0 47 47 15 17 11 16.0 8 222 -29 47 33 42 48 0 55 47 25 26 48 9 21 47 44 25 47 50 5 -1.63 45 0 0 48 15 53 17 11 17.1 7 223 -30 48 2 15 48 29 39 47 53 55 48 38 9 48 13 2 48 18 45 -1.64 46 0 0 48 44 51 17 11 18.1 7 223 -30 48 31 7 48 58 42 48 22 44 49 7 16 48 41 59 48 47 44 -1.64 47 0 0 49 14 8 17 11 19.0 6 224 -31 49 0 18 49 28 5 48 51 51 49 36 42 49 11 15 49 17 2 -1.65 48 0 0 49 43 42 17 11 19.8 5 225 -31 49 29 46 49 57 45 49 21 16 50 6 26 49 40 48 49 46 37 -1.66 49 0 0 50 13 33 17 11 20.4 4 226 -31 49 59 31 50 27 42 49 50 58 50 36 27 50 10 37 50 16 29 -1.67 50 0 0 50 43 39 17 11 21.0 3 226 -32 50 29 31 50 57 55 50 20 54 51 6 43 50 40 42 50 46 37 -1.69 51 0 0 51 14 0 17 11 21.4 3 227 -32 50 59 46 51 28 21 50 51 5 51 37 13 51 11 1 51 16 58 -1.72 52 0 0 51 44 33 17 11 21.7 2 228 -32 51 30 13 51 59 0 51 21 29 52 7 57 51 41 33 51 47 33 -1.77 53 0 0 52 15 18 17 11 21.9 1 229 -32 52 0 52 52 29 52 51 52 4 52 38 52 52 12 17 52 18 19 -1.92 54 0 0 52 46 13 17 11 21.9 0 230 -33 52 31 41 53 0 53 52 22 50 .. .. .. 52 43 11 52 49 16 -3.28 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: G183403.3-230659 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 34 03.3283 DE: -23 06 58.796 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 34 03.3283 DE: -23 06 58.796 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.700,0.600) * V mag [mag]: 10.5 * B mag [mag]: 13.4 * Diameter [mas]: 3.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (11193) Merida asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.005 distance from Earth [AU]: 3.77390 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 date of fit: 2023 Apr 25 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", 87.883° remarks: * orbital elements for (11193)Merida : Mean anomaly = 192.9425960091 deg Arg. of pericenter = 348.2063427145 deg Long. of node = 115.3639984331 deg Inclination = 2.4263028878 deg Eccentricity = 0.1569103058 Semimajor axis = 3.1939409223 AU Perihelion dist = 2.6927786753 AU Mag: H = 12.95, G = 0.15 Epoch of elements : MJD 60596.71434433 TDT (2024 Oct 13.7143) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr25,1.06,2024,10,13,17.144270,-0.026051,0.846974,11.669752,0.355930,0.005750,0.000358,0.000000,0.000000 -1.0277,-23.0982,-80.64,-8.14,False G183403.3-230659,18.56759123,-23.1163323,13.38,10.49,8.93,3.2,4,,18.59250354,-23.0981942,9.02,10.13,0,0,0 11193,Merida,19.51,21.850,3.7739,0,0,1.971,0.83,,1.2,0 0,192.8193,2024,10,13,348.2063,115.3640,2.4263,0.15691,3.19394,2.69278,12.95,5.0,0.15 1.307,0.0137,0.0024,88,0.0024,Known errors,0.79,0,-1,-1 20241013_230659,60140.63 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org