IOTA/IOTA-ES occultation update for (370) Modestia / UCAC4 310-213320 event on 2024 Mar 09, 03:27 UT Visible from Summary ------- On 2024 Mar 09 UT, the 41.1567527224097 km diameter asteroid (370) Modestia will occult a 10.9 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 4.73 mag to 15.64 mag (the magnitude of the asteroid) for at most 1.630 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 Mar 09, 03:24 - 2024 Mar 09, 03:30 * geocentric midpoint of event [JD]: 2460378.64390779 * magnitude of target star: 10.92 * magnitude drop [mag]: 4.73 * estimated maximum duration [s]: 1.630 * Moon: 2 % sunlit, 56° distance * Sun: 73° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 58 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.002", 77°) * approx speed of asteroid's shadow [km/s]: 27.0440 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 310-213320 by 370 Modestia on 2024 Mar 9 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 - 12 0 0 32 3 57 3 24 13.5 0 124 -46 31 45 14 32 22 47 31 40 28 32 27 37 .... - 11 0 0 31 29 53 3 24 13.6 1 124 -46 31 11 15 31 48 38 31 6 29 31 53 27 -0.33 - 10 0 0 30 56 3 3 24 13.8 2 125 -45 30 37 28 31 14 44 30 32 44 31 19 32 -0.55 - 9 0 0 30 22 27 3 24 14.0 3 125 -45 30 3 57 30 41 3 29 59 14 30 45 50 -0.64 - 8 0 0 29 49 7 3 24 14.4 4 126 -44 29 30 42 30 7 39 29 25 59 30 12 25 -0.69 - 7 0 0 29 16 5 3 24 14.9 5 126 -44 28 57 43 29 34 32 28 53 2 29 39 16 -0.71 - 6 0 0 28 43 20 3 24 15.4 6 127 -43 28 25 3 29 1 43 28 20 23 29 6 26 -0.73 - 5 0 0 28 10 54 3 24 16.1 7 127 -42 27 52 42 28 29 13 27 48 3 28 33 55 -0.75 - 4 0 0 27 38 49 3 24 16.9 8 128 -42 27 20 41 27 57 3 27 16 3 28 1 44 -0.76 - 3 0 0 27 7 5 3 24 17.7 10 128 -41 26 49 1 27 25 14 26 44 25 27 29 54 -0.77 - 2 0 0 26 35 43 3 24 18.7 11 129 -40 26 17 44 26 53 48 26 13 8 26 58 27 -0.78 - 1 0 0 26 4 44 3 24 19.8 12 129 -40 25 46 49 26 22 45 25 42 15 26 27 22 -0.78 - 0 0 0 25 34 10 3 24 20.9 13 130 -39 25 16 19 25 52 5 25 11 46 25 56 42 -0.79 1 0 0 25 4 0 3 24 22.2 14 130 -38 24 46 14 25 21 51 24 41 41 25 26 26 -0.79 2 0 0 24 34 16 3 24 23.6 15 131 -37 24 16 34 24 52 3 24 12 3 24 56 37 -0.79 3 0 0 24 4 58 3 24 25.0 16 131 -37 23 47 21 24 22 41 23 42 51 24 27 14 -0.80 4 0 0 23 36 8 3 24 26.6 17 132 -36 23 18 35 23 53 46 23 14 7 23 58 18 -0.80 5 0 0 23 7 47 3 24 28.2 18 132 -35 22 50 18 23 25 20 22 45 50 23 29 51 -0.80 6 0 0 22 39 54 3 24 29.9 19 133 -34 22 22 30 22 57 23 22 18 3 23 1 53 -0.80 7 0 0 22 12 31 3 24 31.8 20 133 -33 21 55 11 22 29 56 21 50 45 22 34 24 -0.81 8 0 0 21 45 38 3 24 33.7 21 134 -33 21 28 22 22 2 59 21 23 58 22 7 26 -0.81 9 0 0 21 19 16 3 24 35.7 22 134 -32 21 2 4 21 36 33 20 57 41 21 40 59 -0.81 10 0 0 20 53 26 3 24 37.8 23 135 -31 20 36 18 21 10 38 20 31 55 21 15 3 -0.81 11 0 0 20 28 7 3 24 40.0 24 135 -30 20 11 4 20 45 16 20 6 42 20 49 40 -0.81 12 0 0 20 3 22 3 24 42.2 24 136 -29 19 46 22 20 20 26 19 42 1 20 24 49 -0.82 13 0 0 19 39 9 3 24 44.6 25 136 -28 19 22 13 19 56 10 19 17 54 20 0 32 -0.82 14 0 0 19 15 30 3 24 47.0 26 137 -27 18 58 38 19 32 27 18 54 19 19 36 48 -0.82 15 0 0 18 52 25 3 24 49.5 27 137 -26 18 35 37 19 9 18 18 31 19 19 13 38 -0.82 16 0 0 18 29 55 3 24 52.1 28 138 -25 18 13 10 18 46 44 18 8 53 18 51 3 -0.82 17 0 0 18 7 59 3 24 54.7 29 138 -25 17 51 18 18 24 45 17 47 2 18 29 3 -0.82 18 0 0 17 46 39 3 24 57.4 30 139 -24 17 30 1 18 3 21 17 25 46 18 7 39 -0.82 19 0 0 17 25 55 3 25 0.2 31 140 -23 17 9 20 17 42 33 17 5 6 17 46 50 -0.82 20 0 0 17 5 46 3 25 3.1 32 140 -22 16 49 15 17 22 21 16 45 1 17 26 37 -0.83 21 0 0 16 46 14 3 25 6.0 33 141 -21 16 29 45 17 2 46 16 25 33 17 7 1 -0.83 22 0 0 16 27 18 3 25 9.0 34 142 -20 16 10 53 16 43 47 16 6 41 16 48 1 -0.83 23 0 0 16 8 59 3 25 12.1 34 142 -19 15 52 37 16 25 25 15 48 26 16 29 38 -0.83 24 0 0 15 51 17 3 25 15.2 35 143 -18 15 34 58 16 7 40 15 30 48 16 11 53 -0.83 25 0 0 15 34 13 3 25 18.4 36 144 -17 15 17 57 15 50 33 15 13 47 15 54 45 -0.83 26 0 0 15 17 46 3 25 21.6 37 144 -16 15 1 33 15 34 4 14 57 24 15 38 15 -0.83 27 0 0 15 1 57 3 25 24.9 38 145 -15 14 45 46 15 18 12 14 41 38 15 22 22 -0.83 28 0 0 14 46 46 3 25 28.3 38 146 -14 14 30 38 15 2 58 14 26 30 15 7 8 -0.83 29 0 0 14 32 13 3 25 31.7 39 147 -13 14 16 7 14 48 23 14 12 1 14 52 32 -0.83 30 0 0 14 18 19 3 25 35.1 40 148 -12 14 2 15 14 34 26 13 58 9 14 38 35 -0.83 31 0 0 14 5 3 3 25 38.7 41 148 -11 13 49 1 14 21 8 13 44 56 14 25 16 -0.83 32 0 0 13 52 25 3 25 42.2 41 149 -10 13 36 26 14 8 28 13 32 21 14 12 35 -0.83 33 0 0 13 40 26 3 25 45.8 42 150 -9 13 24 29 13 56 27 13 20 25 14 0 34 -0.84 34 0 0 13 29 6 3 25 49.4 43 151 -8 13 13 11 13 45 6 13 9 7 13 49 12 -0.84 35 0 0 13 18 25 3 25 53.1 43 152 -7 13 2 32 13 34 23 12 58 28 13 38 29 -0.84 36 0 0 13 8 24 3 25 56.8 44 153 -6 12 52 32 13 24 19 12 48 28 13 28 25 -0.84 37 0 0 12 59 1 3 26 0.6 44 154 -5 12 43 10 13 14 55 12 39 8 13 19 0 -0.84 38 0 0 12 50 17 3 26 4.3 45 155 -4 12 34 28 13 6 10 12 30 26 13 10 14 -0.84 39 0 0 12 42 13 3 26 8.2 45 156 -3 12 26 25 12 58 4 12 22 23 13 2 8 -0.84 40 0 0 12 34 48 3 26 12.0 46 157 -2 12 19 2 12 50 38 12 15 0 12 54 42 -0.84 41 0 0 12 28 3 3 26 15.9 46 158 -1 12 12 17 12 43 51 12 8 16 12 47 55 -0.84 42 0 0 12 21 57 3 26 19.8 47 160 0 12 6 12 12 37 44 12 2 11 12 41 48 -0.84 43 0 0 12 16 30 3 26 23.7 47 161 1 12 0 47 12 32 17 11 56 46 12 36 20 -0.84 44 0 0 12 11 43 3 26 27.7 48 162 2 11 56 1 12 27 29 11 52 0 12 31 32 -0.84 45 0 0 12 7 36 3 26 31.7 48 163 3 11 51 54 12 23 21 11 47 54 12 27 24 -0.84 46 0 0 12 4 8 3 26 35.7 48 165 4 11 48 27 12 19 53 11 44 27 12 23 56 -0.84 47 0 0 12 1 20 3 26 39.7 49 166 5 11 45 40 12 17 5 11 41 39 12 21 7 -0.84 48 0 0 11 59 12 3 26 43.7 49 167 6 11 43 31 12 14 56 11 39 31 12 18 58 -0.84 49 0 0 11 57 43 3 26 47.8 49 168 7 11 42 3 12 13 27 11 38 3 12 17 29 -0.84 50 0 0 11 56 54 3 26 51.8 49 170 8 11 41 14 12 12 38 11 37 14 12 16 40 -0.84 51 0 0 11 56 45 3 26 55.9 50 171 9 11 41 5 12 12 29 11 37 5 12 16 31 -0.84 52 0 0 11 57 15 3 27 0.0 50 173 10 11 41 35 12 12 59 11 37 35 12 17 1 -0.84 53 0 0 11 58 26 3 27 4.1 50 174 11 11 42 45 12 14 10 11 38 45 12 18 12 -0.84 54 0 0 12 0 16 3 27 8.2 50 175 12 11 44 35 12 16 0 11 40 35 12 20 2 -0.84 55 0 0 12 2 45 3 27 12.3 50 177 13 11 47 4 12 18 30 11 43 4 12 22 32 -0.84 56 0 0 12 5 55 3 27 16.4 50 178 14 11 50 13 12 21 40 11 46 12 12 25 42 -0.84 57 0 0 12 9 44 3 27 20.5 50 179 15 11 54 1 12 25 29 11 50 1 12 29 32 -0.84 58 0 0 12 14 12 3 27 24.6 50 181 16 11 58 29 12 29 59 11 54 28 12 34 2 -0.84 59 0 0 12 19 21 3 27 28.6 50 182 17 12 3 37 12 35 8 11 59 36 12 39 11 -0.84 60 0 0 12 25 9 3 27 32.7 49 184 18 12 9 24 12 40 57 12 5 22 12 45 1 -0.84 61 0 0 12 31 36 3 27 36.8 49 185 19 12 15 50 12 47 26 12 11 48 12 51 30 -0.84 62 0 0 12 38 43 3 27 40.9 49 186 20 12 22 56 12 54 34 12 18 54 12 58 38 -0.84 63 0 0 12 46 30 3 27 45.0 49 188 21 12 30 41 13 2 22 12 26 39 13 6 27 -0.85 64 0 0 12 54 56 3 27 49.0 49 189 22 12 39 6 13 10 50 12 35 3 13 14 54 -0.85 65 0 0 13 4 1 3 27 53.0 48 190 23 12 48 10 13 19 56 12 44 7 13 24 2 -0.85 66 0 0 13 13 46 3 27 57.1 48 192 24 12 57 53 13 29 43 12 53 49 13 33 48 -0.85 67 0 0 13 24 10 3 28 1.1 47 193 24 13 8 15 13 40 9 13 4 11 13 44 15 -0.85 68 0 0 13 35 13 3 28 5.0 47 194 25 13 19 16 13 51 14 13 15 12 13 55 20 -0.85 69 0 0 13 46 55 3 28 9.0 47 195 26 13 30 56 14 2 58 13 26 51 14 7 5 -0.85 70 0 0 13 59 16 3 28 12.9 46 196 27 13 43 15 14 15 21 13 39 10 14 19 29 -0.85 71 0 0 14 12 16 3 28 16.8 46 198 28 13 56 13 14 28 23 13 52 7 14 32 31 -0.85 72 0 0 14 25 55 3 28 20.7 45 199 29 14 9 49 14 42 4 14 5 43 14 46 13 -0.85 73 0 0 14 40 12 3 28 24.6 45 200 30 14 24 4 14 56 23 14 19 57 15 0 33 -0.85 74 0 0 14 55 7 3 28 28.4 44 201 31 14 38 57 15 11 22 14 34 49 15 15 32 -0.85 75 0 0 15 10 41 3 28 32.1 43 202 32 14 54 28 15 26 58 14 50 20 15 31 9 -0.85 76 0 0 15 26 53 3 28 35.9 43 203 33 15 10 37 15 43 13 15 6 28 15 47 24 -0.85 77 0 0 15 43 43 3 28 39.6 42 204 33 15 27 24 16 0 5 15 23 14 16 4 18 -0.85 78 0 0 16 1 10 3 28 43.2 41 205 34 15 44 49 16 17 36 15 40 38 16 21 49 -0.85 79 0 0 16 19 15 3 28 46.9 41 206 35 16 2 51 16 35 44 15 58 40 16 39 58 -0.85 80 0 0 16 37 57 3 28 50.4 40 207 36 16 21 30 16 54 29 16 17 18 16 58 44 -0.84 81 0 0 16 57 17 3 28 54.0 39 208 37 16 40 46 17 13 51 16 36 33 17 18 7 -0.84 82 0 0 17 17 12 3 28 57.4 39 209 38 17 0 38 17 33 51 16 56 25 17 38 7 -0.84 83 0 0 17 37 45 3 29 0.8 38 209 38 17 21 7 17 54 26 17 16 53 17 58 43 -0.84 84 0 0 17 58 53 3 29 4.2 37 210 39 17 42 12 18 15 38 17 37 56 18 19 56 -0.84 85 0 0 18 20 37 3 29 7.5 36 211 40 18 3 52 18 37 26 17 59 36 18 41 45 -0.84 86 0 0 18 42 56 3 29 10.8 35 212 41 18 26 8 18 59 49 18 21 51 19 4 8 -0.84 87 0 0 19 5 50 3 29 14.0 35 213 41 18 48 59 19 22 46 18 44 40 19 27 7 -0.84 88 0 0 19 29 19 3 29 17.1 34 213 42 19 12 23 19 46 19 19 8 4 19 50 41 -0.84 89 0 0 19 53 22 3 29 20.1 33 214 43 19 36 22 20 10 26 19 32 2 20 14 49 -0.84 90 0 0 20 17 58 3 29 23.1 32 215 43 20 0 55 20 35 6 19 56 34 20 39 30 -0.84 91 0 0 20 43 8 3 29 26.1 31 215 44 20 26 0 21 0 20 20 21 38 21 4 45 -0.84 92 0 0 21 8 50 3 29 28.9 30 216 45 20 51 38 21 26 6 20 47 15 21 30 32 -0.84 93 0 0 21 35 4 3 29 31.7 29 217 45 21 17 48 21 52 24 21 13 24 21 56 51 -0.84 94 0 0 22 1 49 3 29 34.4 28 217 46 21 44 30 22 19 14 21 40 4 22 23 42 -0.84 95 0 0 22 29 6 3 29 37.0 28 218 46 22 11 42 22 46 35 22 7 16 22 51 4 -0.84 96 0 0 22 56 52 3 29 39.5 27 219 47 22 39 24 23 14 25 22 34 57 23 18 56 -0.84 97 0 0 23 25 8 3 29 42.0 26 219 47 23 7 36 23 42 46 23 3 7 23 47 17 -0.84 98 0 0 23 53 53 3 29 44.4 25 220 48 23 36 16 24 11 35 23 31 46 24 16 8 -0.85 99 0 0 24 23 6 3 29 46.7 24 220 48 24 5 24 24 40 52 24 0 53 24 45 26 -0.85 100 0 0 24 52 45 3 29 48.9 23 221 49 24 35 0 25 10 36 24 30 28 25 15 11 -0.85 101 0 0 25 22 52 3 29 51.0 22 222 49 25 5 2 25 40 47 25 0 28 25 45 23 -0.85 102 0 0 25 53 24 3 29 53.0 21 222 49 25 35 29 26 11 23 25 30 55 26 16 1 -0.85 103 0 0 26 24 20 3 29 55.0 20 223 50 26 6 21 26 42 25 26 1 45 26 47 3 -0.85 104 0 0 26 55 40 3 29 56.8 19 223 50 26 37 37 27 13 49 26 33 0 27 18 29 -0.85 105 0 0 27 27 23 3 29 58.6 18 224 50 27 9 15 27 45 37 27 4 37 27 50 18 -0.85 106 0 0 27 59 28 3 30 0.2 17 224 50 27 41 15 28 17 46 27 36 37 28 22 28 -0.85 107 0 0 28 31 53 3 30 1.8 16 225 50 28 13 36 28 50 16 28 8 57 28 55 0 -0.85 108 0 0 29 4 39 3 30 3.2 15 225 50 28 46 17 29 23 6 28 41 36 29 27 50 -0.85 109 0 0 29 37 42 3 30 4.6 14 226 51 29 19 17 29 56 14 29 14 34 30 1 0 -0.85 110 0 0 30 11 4 3 30 5.9 13 226 51 29 52 33 30 29 40 29 47 50 30 34 27 -0.85 111 0 0 30 44 41 3 30 7.0 12 227 51 30 26 7 31 3 22 30 21 22 31 8 10 -0.85 112 0 0 31 18 34 3 30 8.1 11 228 50 30 59 55 31 37 19 30 55 10 31 42 8 -0.85 113 0 0 31 52 41 3 30 9.1 10 228 50 31 33 58 32 11 30 31 29 12 32 16 20 -0.85 114 0 0 32 27 1 3 30 10.0 9 229 50 32 8 14 32 45 54 32 3 26 32 50 45 -0.86 115 0 0 33 1 32 3 30 10.7 8 229 50 32 42 41 33 20 30 32 37 52 33 25 22 -0.86 116 0 0 33 36 13 3 30 11.4 7 230 50 33 17 18 33 55 15 33 12 28 34 0 8 -0.86 117 0 0 34 11 4 3 30 12.0 6 230 50 33 52 5 34 30 9 33 47 14 34 35 4 -0.87 118 0 0 34 46 2 3 30 12.5 5 231 49 34 26 59 35 5 12 34 22 7 35 10 7 -0.87 119 0 0 35 21 7 3 30 12.8 4 232 49 35 2 0 35 40 20 34 57 7 35 45 16 -0.89 120 0 0 35 56 16 3 30 13.1 3 232 49 35 37 6 36 15 33 35 32 12 36 20 31 -0.90 121 0 0 36 31 30 3 30 13.3 2 233 48 36 12 16 36 50 50 36 7 21 36 55 48 -0.94 122 0 0 37 6 45 3 30 13.4 1 233 48 36 47 28 37 26 9 36 42 33 37 31 8 -1.11 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 310-213320 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 24 39.2097 DE: -28 07 54.706 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 24 39.2097 DE: -28 07 54.706 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.400) * V mag [mag]: 10.9 * B mag [mag]: 13.6 * Diameter [mas]: 1.70 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (370) Modestia asteroid class: approx. diameter [km]: 41 approx. diameter ["]: 0.023 distance from Earth [AU]: 2.45770 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.016", 0.002", 77° remarks: * orbital elements for (370)Modestia : Mean anomaly = 262.1431696625 deg Arg. of pericenter = 68.5103921071 deg Long. of node = 290.8811104452 deg Inclination = 7.8614210704 deg Eccentricity = 0.0905791622 Semimajor axis = 2.3248166725 AU Perihelion dist = 2.1142367261 AU Mag: H = 10.71, G = 0.15 Epoch of elements : MJD 60378.14390771 TDT (2024 Mar 09.1439) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,1.63,2024,3,9,3.453787,-0.035510,0.643765,15.240614,0.851635,-0.005443,-0.000383,-0.000001,0.000000 57.4174,-28.1192,130.81,-4.33,False UCAC4 310-213320,18.41089154,-28.1318627,13.57,10.92,9.49,1.7,4,,18.43610932,-28.1192030,4.73,5.71,0,0,0 370,Modestia,15.64,44.187,2.4577,0,0,4.122,3.05,,2.4,0 0,262.1032,2024,3,9,68.5104,290.8811,7.8614,0.09058,2.32482,2.11424,10.70,5.0,0.15 1.128,0.0157,0.0018,77,0.0032,Known errors,0.73,0,-1,-1 20240309_213320,60139.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org