IOTA/IOTA-ES occultation update for (454) Mathesis / UCAC4 303-172247 event on 2024 Oct 09, 06:27 UT Visible from Summary ------- On 2024 Oct 09 UT, the 81.8861100785842 km diameter asteroid (454) Mathesis will occult a 11.0 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 3.58 mag to 14.54 mag (the magnitude of the asteroid) for at most 3.110 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: 2024 Oct 09, 06:24 - 2024 Oct 09, 06:31 * geocentric midpoint of event [JD]: 2460592.76937484 * magnitude of target star: 11.00 * magnitude drop [mag]: 3.58 * estimated maximum duration [s]: 3.110 * Moon: 35 % sunlit, 2° distance * Sun: 74° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 104 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.002", 95°) * approx speed of asteroid's shadow [km/s]: 26.7944 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 303-172247 by 454 Mathesis on 2024 Oct 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 84 0 0 27 37 53 6 24 43.3 1 124 56 27 4 24 28 11 40 27 0 38 28 15 30 .... 85 0 0 27 2 26 6 24 43.4 2 124 56 26 29 4 27 36 5 26 25 19 27 39 55 -0.36 86 0 0 26 27 15 6 24 43.6 3 125 57 25 54 0 27 0 46 25 50 16 27 4 35 -0.51 87 0 0 25 52 20 6 24 43.9 4 125 57 25 19 13 26 25 44 25 15 29 26 29 32 -0.57 88 0 0 25 17 43 6 24 44.3 5 126 58 24 44 44 25 50 59 24 41 1 25 54 46 -0.61 89 0 0 24 43 25 6 24 44.8 6 126 58 24 10 34 25 16 34 24 6 52 25 20 20 -0.63 90 0 0 24 9 28 6 24 45.5 7 127 58 23 36 44 24 42 28 23 33 3 24 46 13 -0.65 91 0 0 23 35 52 6 24 46.2 8 127 58 23 3 16 24 8 44 22 59 36 24 12 28 -0.66 92 0 0 23 2 38 6 24 47.0 9 127 59 22 30 10 23 35 22 22 26 31 23 39 6 -0.67 93 0 0 22 29 48 6 24 47.9 10 128 59 21 57 27 23 2 24 21 53 49 23 6 6 -0.68 94 0 0 21 57 22 6 24 49.0 11 128 59 21 25 9 22 29 50 21 21 32 22 33 31 -0.68 95 0 0 21 25 21 6 24 50.1 12 129 59 20 53 17 21 57 41 20 49 40 22 1 21 -0.69 96 0 0 20 53 46 6 24 51.3 13 129 59 20 21 50 21 25 58 20 18 14 21 29 38 -0.69 97 0 0 20 22 39 6 24 52.6 14 129 59 19 50 50 20 54 43 19 47 15 20 58 21 -0.70 98 0 0 19 51 59 6 24 54.1 15 130 59 19 20 18 20 23 55 19 16 44 20 27 33 -0.70 99 0 0 19 21 48 6 24 55.6 17 130 58 18 50 15 19 53 36 18 46 42 19 57 13 -0.70 100 0 0 18 52 7 6 24 57.2 18 131 58 18 20 41 19 23 47 18 17 9 19 27 23 -0.70 101 0 0 18 22 56 6 24 58.9 19 131 58 17 51 38 18 54 28 17 48 6 18 58 3 -0.71 102 0 0 17 54 15 6 25 0.7 20 132 58 17 23 5 18 25 40 17 19 34 18 29 14 -0.71 103 0 0 17 26 6 6 25 2.6 21 132 57 16 55 3 17 57 23 16 51 34 18 0 57 -0.71 104 0 0 16 58 30 6 25 4.6 22 132 57 16 27 34 17 29 39 16 24 5 17 33 11 -0.71 105 0 0 16 31 26 6 25 6.7 23 133 57 16 0 37 17 2 28 15 57 9 17 5 59 -0.71 106 0 0 16 4 55 6 25 8.9 24 133 56 15 34 14 16 35 49 15 30 46 16 39 20 -0.72 107 0 0 15 38 58 6 25 11.1 25 134 56 15 8 24 16 9 45 15 4 57 16 13 15 -0.72 108 0 0 15 13 35 6 25 13.5 26 134 55 14 43 8 15 44 16 14 39 42 15 47 45 -0.72 109 0 0 14 48 48 6 25 15.9 27 135 55 14 18 27 15 19 21 14 15 2 15 22 49 -0.72 110 0 0 14 24 35 6 25 18.4 28 135 54 13 54 22 14 55 1 13 50 57 14 58 29 -0.72 111 0 0 14 0 58 6 25 21.0 29 135 53 13 30 51 14 31 18 13 27 28 14 34 44 -0.72 112 0 0 13 37 57 6 25 23.6 30 136 53 13 7 57 14 8 10 13 4 34 14 11 36 -0.72 113 0 0 13 15 33 6 25 26.3 31 136 52 12 45 39 13 45 39 12 42 16 13 49 4 -0.72 114 0 0 12 53 45 6 25 29.1 31 137 51 12 23 57 13 23 45 12 20 35 13 27 10 -0.73 115 0 0 12 32 34 6 25 32.0 32 137 51 12 2 52 13 2 28 11 59 31 13 5 52 -0.73 116 0 0 12 12 1 6 25 35.0 33 138 50 11 42 25 12 41 49 11 39 4 12 45 12 -0.73 117 0 0 11 52 5 6 25 38.0 34 139 49 11 22 34 12 21 47 11 19 15 12 25 9 -0.73 118 0 0 11 32 47 6 25 41.0 35 139 48 11 3 22 12 2 23 11 0 3 12 5 45 -0.73 119 0 0 11 14 7 6 25 44.2 36 140 48 10 44 47 11 43 38 10 41 29 11 46 59 -0.73 120 0 0 10 56 5 6 25 47.4 37 140 47 10 26 51 11 25 31 10 23 33 11 28 51 -0.73 121 0 0 10 38 42 6 25 50.6 38 141 46 10 9 33 11 8 2 10 6 15 11 11 22 -0.73 122 0 0 10 21 57 6 25 53.9 39 142 45 9 52 53 10 51 13 9 49 36 10 54 32 -0.73 123 0 0 10 5 51 6 25 57.3 39 142 44 9 36 52 10 35 2 9 33 36 10 38 21 -0.73 124 0 0 9 50 24 6 26 0.7 40 143 44 9 21 29 10 19 31 9 18 14 10 22 49 -0.73 125 0 0 9 35 37 6 26 4.2 41 144 43 9 6 46 10 4 39 9 3 31 10 7 56 -0.73 126 0 0 9 21 28 6 26 7.7 42 145 42 8 52 42 9 50 26 8 49 27 9 53 43 -0.73 127 0 0 9 8 0 6 26 11.3 43 145 41 8 39 17 9 36 53 8 36 3 9 40 10 -0.73 128 0 0 8 55 10 6 26 14.9 43 146 40 8 26 31 9 23 59 8 23 17 9 27 16 -0.74 129 0 0 8 42 59 6 26 18.5 44 147 39 8 14 24 9 11 46 8 11 11 9 15 2 -0.74 130 0 0 8 31 29 6 26 22.2 45 148 38 8 2 57 9 0 12 7 59 44 9 3 27 -0.74 131 0 0 8 20 38 6 26 26.0 45 149 37 7 52 9 8 49 17 7 48 57 8 52 33 -0.74 132 0 0 8 10 27 6 26 29.7 46 150 36 7 42 1 8 39 3 7 38 49 8 42 18 -0.74 133 0 0 8 0 55 6 26 33.6 47 151 35 7 32 32 8 29 29 7 29 20 8 32 43 -0.74 134 0 0 7 52 4 6 26 37.4 47 152 34 7 23 44 8 20 35 7 20 32 8 23 49 -0.74 135 0 0 7 43 52 6 26 41.3 48 153 33 7 15 34 8 12 21 7 12 23 8 15 35 -0.74 136 0 0 7 36 21 6 26 45.2 48 154 33 7 8 5 8 4 47 7 4 54 8 8 0 -0.74 137 0 0 7 29 29 6 26 49.2 49 155 32 7 1 15 7 57 53 6 58 4 8 1 7 -0.74 138 0 0 7 23 17 6 26 53.1 49 156 31 6 55 6 7 51 40 6 51 55 7 54 53 -0.74 139 0 0 7 17 46 6 26 57.1 50 157 30 6 49 36 7 46 6 6 46 25 7 49 19 -0.74 140 0 0 7 12 54 6 27 1.2 50 158 29 6 44 46 7 41 13 6 41 35 7 44 26 -0.74 141 0 0 7 8 43 6 27 5.2 51 160 28 6 40 35 7 37 1 6 37 25 7 40 13 -0.74 142 0 0 7 5 12 6 27 9.3 51 161 27 6 37 5 7 33 28 6 33 55 7 36 41 -0.74 143 0 0 7 2 20 6 27 13.4 52 162 26 6 34 15 7 30 36 6 31 5 7 33 49 -0.74 144 0 0 7 0 10 6 27 17.5 52 164 25 6 32 5 7 28 25 6 28 55 7 31 37 -0.74 145 0 0 6 58 39 6 27 21.6 52 165 24 6 30 34 7 26 54 6 27 24 7 30 6 -0.74 146 0 0 6 57 48 6 27 25.7 53 166 23 6 29 44 7 26 3 6 26 34 7 29 15 -0.74 147 0 0 6 57 38 6 27 29.9 53 168 22 6 29 33 7 25 52 6 26 23 7 29 5 -0.74 148 0 0 6 58 7 6 27 34.1 53 169 21 6 30 3 7 26 22 6 26 53 7 29 35 -0.74 149 0 0 6 59 17 6 27 38.2 53 171 20 6 31 12 7 27 32 6 28 2 7 30 45 -0.74 150 0 0 7 1 8 6 27 42.4 53 172 19 6 33 2 7 29 23 6 29 52 7 32 36 -0.74 151 0 0 7 3 38 6 27 46.6 53 174 18 6 35 32 7 31 54 6 32 22 7 35 7 -0.74 152 0 0 7 6 48 6 27 50.8 53 175 17 6 38 41 7 35 6 6 35 31 7 38 19 -0.74 153 0 0 7 10 39 6 27 55.0 53 177 16 6 42 31 7 38 58 6 39 20 7 42 11 -0.74 154 0 0 7 15 10 6 27 59.2 53 178 15 6 47 0 7 43 30 6 43 50 7 46 43 -0.74 155 0 0 7 20 21 6 28 3.4 53 180 14 6 52 10 7 48 43 6 48 59 7 51 56 -0.74 156 0 0 7 26 12 6 28 7.6 53 181 13 6 57 59 7 54 36 6 54 48 7 57 49 -0.74 157 0 0 7 32 44 6 28 11.8 53 182 12 7 4 29 8 1 9 7 1 18 8 4 23 -0.74 158 0 0 7 39 55 6 28 16.0 53 184 11 7 11 38 8 8 23 7 8 27 8 11 37 -0.74 159 0 0 7 47 47 6 28 20.2 53 185 10 7 19 27 8 16 17 7 16 16 8 19 31 -0.74 160 0 0 7 56 19 6 28 24.4 52 187 9 7 27 57 8 24 52 7 24 45 8 28 6 -0.74 161 0 0 8 5 31 6 28 28.6 52 188 8 7 37 6 8 34 6 7 33 53 8 37 21 -0.74 162 0 0 8 15 22 6 28 32.7 52 190 7 7 46 54 8 44 1 7 43 42 8 47 16 -0.74 163 0 0 8 25 54 6 28 36.9 51 191 6 7 57 23 8 54 36 7 54 10 8 57 52 -0.74 164 0 0 8 37 6 6 28 41.0 51 192 5 8 8 31 9 5 51 8 5 18 9 9 7 -0.74 165 0 0 8 48 57 6 28 45.1 51 194 4 8 20 19 9 17 46 8 17 6 9 21 3 -0.74 166 0 0 9 1 29 6 28 49.2 50 195 3 8 32 47 9 30 21 8 29 33 9 33 38 -0.74 167 0 0 9 14 40 6 28 53.3 50 196 1 8 45 54 9 43 36 8 42 39 9 46 54 -0.74 168 0 0 9 28 30 6 28 57.4 49 197 0 8 59 40 9 57 31 8 56 25 10 0 49 -0.74 169 0 0 9 43 0 6 29 1.4 49 198 -1 9 14 6 10 12 6 9 10 51 10 15 24 -0.74 170 0 0 9 58 10 6 29 5.4 48 200 -2 9 29 11 10 27 20 9 25 55 10 30 38 -0.74 171 0 0 10 13 59 6 29 9.3 48 201 -3 9 44 55 10 43 13 9 41 39 10 46 32 -0.74 172 0 0 10 30 27 6 29 13.3 47 202 -4 10 1 18 10 59 46 9 58 1 11 3 6 -0.74 173 0 0 10 47 34 6 29 17.2 46 203 -5 10 18 20 11 16 58 10 15 3 11 20 19 -0.74 174 0 0 11 5 19 6 29 21.1 46 204 -6 10 36 1 11 34 49 10 32 43 11 38 10 -0.74 175 0 0 11 23 44 6 29 24.9 45 205 -7 10 54 20 11 53 19 10 51 1 11 56 41 -0.74 176 0 0 11 42 47 6 29 28.7 44 206 -8 11 13 18 12 12 28 11 9 58 12 15 50 -0.74 177 0 0 12 2 28 6 29 32.4 43 207 -9 11 32 53 12 32 15 11 29 33 12 35 38 -0.74 178 0 0 12 22 48 6 29 36.1 43 208 -10 11 53 7 12 52 41 11 49 46 12 56 4 -0.74 179 0 0 12 43 45 6 29 39.8 42 209 -11 12 13 58 13 13 44 12 10 36 13 17 8 -0.74 180 0 0 13 5 19 6 29 43.4 41 209 -12 12 35 26 13 35 25 12 32 4 13 38 50 -0.74 -179 0 0 13 27 31 6 29 47.0 40 210 -13 12 57 32 13 57 43 12 54 9 14 1 9 -0.74 -178 0 0 13 50 20 6 29 50.5 39 211 -14 13 20 14 14 20 38 13 16 50 14 24 5 -0.74 -177 0 0 14 13 45 6 29 53.9 39 212 -15 13 43 33 14 44 10 13 40 8 14 47 38 -0.74 -176 0 0 14 37 46 6 29 57.3 38 212 -16 14 7 27 15 8 19 14 4 2 15 11 47 -0.74 -175 0 0 15 2 24 6 30 0.7 37 213 -17 14 31 58 15 33 3 14 28 32 15 36 32 -0.74 -174 0 0 15 27 36 6 30 3.9 36 214 -18 14 57 3 15 58 23 14 53 37 16 1 52 -0.74 -173 0 0 15 53 24 6 30 7.1 35 215 -19 15 22 44 16 24 17 15 19 16 16 27 48 -0.74 -172 0 0 16 19 46 6 30 10.3 34 215 -20 15 48 58 16 50 47 15 45 30 16 54 18 -0.74 -171 0 0 16 46 42 6 30 13.3 33 216 -21 16 15 47 17 17 50 16 12 18 17 21 22 -0.74 -170 0 0 17 14 11 6 30 16.3 32 216 -22 16 43 8 17 45 27 16 39 39 17 49 0 -0.74 -169 0 0 17 42 13 6 30 19.3 31 217 -23 17 11 3 18 13 37 17 7 32 18 17 11 -0.74 -168 0 0 18 10 47 6 30 22.1 30 218 -24 17 39 29 18 42 19 17 35 58 18 45 53 -0.74 -167 0 0 18 39 53 6 30 24.9 29 218 -25 18 8 27 19 11 32 18 4 55 19 15 8 -0.74 -166 0 0 19 9 29 6 30 27.6 28 219 -26 18 37 56 19 41 17 18 34 23 19 44 53 -0.74 -165 0 0 19 39 36 6 30 30.2 27 219 -26 19 7 55 20 11 31 19 4 21 20 15 9 -0.74 -164 0 0 20 10 12 6 30 32.7 26 220 -27 19 38 23 20 42 15 19 34 48 20 45 54 -0.74 -163 0 0 20 41 16 6 30 35.2 25 221 -28 20 9 20 21 13 28 20 5 44 21 17 8 -0.74 -162 0 0 21 12 49 6 30 37.5 24 221 -29 20 40 44 21 45 9 20 37 8 21 48 49 -0.74 -161 0 0 21 44 48 6 30 39.8 23 222 -30 21 12 36 22 17 16 21 8 58 22 20 57 -0.74 -160 0 0 22 17 13 6 30 42.0 22 222 -31 21 44 53 22 49 49 21 41 14 22 53 32 -0.74 -159 0 0 22 50 3 6 30 44.0 21 223 -32 22 17 35 23 22 48 22 13 56 23 26 31 -0.74 -158 0 0 23 23 18 6 30 46.0 20 223 -33 22 50 42 23 56 10 22 47 1 23 59 54 -0.74 -157 0 0 23 56 55 6 30 47.9 19 224 -34 23 24 11 24 29 56 23 20 30 24 33 41 -0.74 -156 0 0 24 30 54 6 30 49.7 18 224 -34 23 58 2 25 4 3 23 54 20 25 7 49 -0.74 -155 0 0 25 5 15 6 30 51.4 17 225 -35 24 32 15 25 38 31 24 28 32 25 42 18 -0.75 -154 0 0 25 39 55 6 30 53.0 16 225 -36 25 6 47 26 13 19 25 3 3 26 17 7 -0.75 -153 0 0 26 14 53 6 30 54.5 15 226 -37 25 41 38 26 48 26 25 37 53 26 52 14 -0.75 -152 0 0 26 50 9 6 30 55.9 14 226 -37 26 16 46 27 23 49 26 13 1 27 27 39 -0.75 -151 0 0 27 25 41 6 30 57.2 13 227 -38 26 52 11 27 59 29 26 48 25 28 3 20 -0.75 -150 0 0 28 1 29 6 30 58.4 12 227 -39 27 27 51 28 35 24 27 24 4 28 39 15 -0.75 -149 0 0 28 37 29 6 30 59.5 11 228 -40 28 3 45 29 11 32 27 59 57 29 15 24 -0.75 -148 0 0 29 13 43 6 31 0.4 10 228 -40 28 39 51 29 47 53 28 36 2 29 51 46 -0.75 -147 0 0 29 50 7 6 31 1.3 9 229 -41 29 16 8 30 24 24 29 12 18 30 28 18 -0.75 -146 0 0 30 26 41 6 31 2.1 8 229 -41 29 52 35 31 1 5 29 48 45 31 5 0 -0.76 -145 0 0 31 3 23 6 31 2.8 7 230 -42 30 29 11 31 37 54 30 25 20 31 41 49 -0.76 -144 0 0 31 40 12 6 31 3.4 6 230 -43 31 5 54 32 14 50 31 2 2 32 18 46 -0.76 -143 0 0 32 17 7 6 31 3.8 5 231 -43 31 42 43 32 51 51 31 38 50 32 55 48 -0.77 -142 0 0 32 54 6 6 31 4.2 4 231 -44 32 19 36 33 28 56 32 15 43 33 32 53 -0.78 -141 0 0 33 31 8 6 31 4.5 3 232 -44 32 56 32 34 6 3 32 52 38 34 10 2 -0.79 -140 0 0 34 8 11 6 31 4.7 1 232 -45 33 33 29 34 43 12 33 29 35 34 47 11 -0.84 -139 0 0 34 45 14 6 31 4.7 0 233 -45 34 10 27 35 20 20 34 6 32 35 24 20 -1.06 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 303-172247 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 01 15.3627 DE: -29 26 38.793 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 01 15.3627 DE: -29 26 38.793 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 11.0 * B mag [mag]: 13.2 * Diameter [mas]: 0.70 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (454) Mathesis asteroid class: approx. diameter [km]: 82 approx. diameter ["]: 0.043 distance from Earth [AU]: 2.64510 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#127 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): 0.008", 0.002", 95.189° remarks: * orbital elements for (454)Mathesis : Mean anomaly = 70.6973379232 deg Arg. of pericenter = 177.0916476871 deg Long. of node = 32.1658282636 deg Inclination = 6.2921888046 deg Eccentricity = 0.1116226802 Semimajor axis = 2.6275184933 AU Perihelion dist = 2.3342278367 AU Mag: H = 9.32, G = 0.15 Epoch of elements : MJD 60592.26937463 TDT (2024 Oct 09.2694) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1272023Apr24,3.11,2024,10,9,6.464996,-0.045193,0.595120,15.080825,1.135240,0.005467,-0.000136,-0.000001,0.000000 155.3616,-29.4461,79.83,-6.47,False UCAC4 303-172247,18.02093413,-29.4441092,13.17,11.00,9.83,0.7,4,,18.04710034,-29.4460757,3.58,4.28,0,0,0 454,Mathesis,14.54,83.229,2.6451,0,0,3.839,3.78,,5.2,0 0,70.6350,2024,10,9,177.0916,32.1658,6.2922,0.11162,2.62752,2.33423,9.32,5.0,0.15 1.057,0.0077,0.0021,95,0.0025,Known errors,0.50,0,-1,-1 20241009_172247,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org