IOTA/IOTA-ES occultation update for (181) Eucharis / TYC 6283-00502-1 event on 2024 Oct 19, 14:28 UT Visible from Summary ------- On 2024 Oct 19 UT, the 113.378 km diameter asteroid (181) Eucharis will occult a 11.4 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 3.17 mag to 14.51 mag (the magnitude of the asteroid) for at most 5.780 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 19, 14:26 - 2024 Oct 19, 14:30 * geocentric midpoint of event [JD]: 2460603.10310313 * magnitude of target star: 11.40 * magnitude drop [mag]: 3.17 * estimated maximum duration [s]: 5.780 * Moon: 93 % sunlit, 129° distance * Sun: 80° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 287 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 98°) * approx speed of asteroid's shadow [km/s]: 19.6302 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6283-00502-1 by 181 Eucharis on 2024 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 11 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 72 8 17 .. .. .. .... 12 0 0 .. .. .... .. .. .. .. .. .. 71 51 1 .. .. .. 71 35 55 .. .. .. .... 13 0 0 .. .. .... .. .. .. .. .. .. 71 18 5 .. .. .. 71 3 12 .. .. .. .... 14 0 0 .. .. .... .. .. .. .. .. .. 70 44 51 .. .. .. 70 30 10 .. .. .. .... 15 0 0 72 50 44 14 26 22.1 0 154 0 70 11 19 .. .. .. 69 56 51 .. .. .. .... 16 0 0 72 14 1 14 26 22.1 1 155 0 69 37 34 .. .. .. 69 23 19 .. .. .. -0.76 17 0 0 71 37 9 14 26 22.3 1 156 0 69 3 37 .. .. .. 68 49 34 .. .. .. -1.55 18 0 0 71 0 10 14 26 22.6 2 157 0 68 29 30 .. .. .. 68 15 40 .. .. .. -1.81 19 0 0 70 23 7 14 26 23.0 3 158 0 67 55 17 .. .. .. 67 41 39 .. .. .. -1.95 20 0 0 69 46 2 14 26 23.5 3 159 0 67 20 58 72 49 46 67 7 33 73 12 16 -2.03 21 0 0 69 8 59 14 26 24.2 4 160 0 66 46 37 72 7 13 66 33 25 72 28 46 -2.08 22 0 0 68 31 59 14 26 25.0 5 161 0 66 12 16 71 25 2 65 59 16 71 45 44 -2.12 23 0 0 67 55 5 14 26 26.0 6 162 0 65 37 57 70 43 15 65 25 8 71 3 10 -2.15 24 0 0 67 18 19 14 26 27.0 6 162 0 65 3 41 70 1 53 64 51 4 70 21 5 -2.17 25 0 0 66 41 43 14 26 28.2 7 163 0 64 29 30 69 20 56 64 17 5 69 39 29 -2.19 26 0 0 66 5 19 14 26 29.6 8 164 0 63 55 27 68 40 26 63 43 13 68 58 21 -2.21 27 0 0 65 29 8 14 26 31.1 8 165 0 63 21 33 68 0 23 63 9 29 68 17 44 -2.22 28 0 0 64 53 13 14 26 32.7 9 166 0 62 47 49 67 20 47 62 35 57 67 37 37 -2.23 29 0 0 64 17 34 14 26 34.4 10 167 -1 62 14 19 66 41 40 62 2 37 66 58 1 -2.24 30 0 0 63 42 14 14 26 36.3 10 168 -1 61 41 2 66 3 2 61 29 31 66 18 55 -2.25 31 0 0 63 7 13 14 26 38.3 11 169 -1 61 8 2 65 24 55 60 56 40 65 40 22 -2.26 32 0 0 62 32 34 14 26 40.4 12 170 -1 60 35 18 64 47 18 60 24 6 65 2 21 -2.26 33 0 0 61 58 17 14 26 42.6 12 171 -1 60 2 53 64 10 12 59 51 50 64 24 53 -2.27 34 0 0 61 24 24 14 26 45.0 13 172 -2 59 30 47 63 33 39 59 19 53 63 47 58 -2.27 35 0 0 60 50 56 14 26 47.5 14 173 -2 58 59 2 62 57 38 58 48 17 63 11 38 -2.28 36 0 0 60 17 54 14 26 50.0 14 174 -2 58 27 40 62 22 11 58 17 4 62 35 52 -2.28 37 0 0 59 45 19 14 26 52.7 15 175 -3 57 56 42 61 47 18 57 46 14 62 0 41 -2.29 38 0 0 59 13 11 14 26 55.6 15 176 -3 57 26 8 61 12 59 57 15 47 61 26 6 -2.29 39 0 0 58 41 33 14 26 58.5 16 177 -3 56 55 59 60 39 16 56 45 47 60 52 7 -2.30 40 0 0 58 10 25 14 27 1.5 16 178 -4 56 26 17 60 6 8 56 16 12 60 18 45 -2.30 41 0 0 57 39 48 14 27 4.6 17 179 -4 55 57 3 59 33 37 55 47 5 59 45 59 -2.30 42 0 0 57 9 42 14 27 7.8 18 180 -5 55 28 17 59 1 43 55 18 26 59 13 52 -2.31 43 0 0 56 40 8 14 27 11.1 18 181 -5 55 0 0 58 30 26 54 50 16 58 42 22 -2.31 44 0 0 56 11 8 14 27 14.4 18 182 -6 54 32 13 57 59 46 54 22 36 58 11 31 -2.31 45 0 0 55 42 41 14 27 17.9 19 183 -6 54 4 58 57 29 45 53 55 27 57 41 18 -2.32 46 0 0 55 14 48 14 27 21.4 19 184 -6 53 38 14 57 0 23 53 28 49 57 11 45 -2.32 47 0 0 54 47 31 14 27 25.0 20 185 -7 53 12 2 56 31 39 53 2 43 56 42 51 -2.32 48 0 0 54 20 49 14 27 28.7 20 186 -8 52 46 23 56 3 35 52 37 10 56 14 37 -2.33 49 0 0 53 54 43 14 27 32.4 20 187 -8 52 21 18 55 36 11 52 12 11 55 47 4 -2.33 50 0 0 53 29 14 14 27 36.2 21 189 -9 51 56 48 55 9 27 51 47 45 55 20 11 -2.33 51 0 0 53 4 22 14 27 40.0 21 190 -9 51 32 52 54 43 24 51 23 54 54 53 59 -2.33 52 0 0 52 40 7 14 27 43.9 21 191 -10 51 9 32 54 18 1 51 0 39 54 28 28 -2.34 53 0 0 52 16 31 14 27 47.8 22 192 -10 50 46 47 53 53 19 50 37 59 54 3 39 -2.34 54 0 0 51 53 33 14 27 51.8 22 193 -11 50 24 38 53 29 19 50 15 55 53 39 32 -2.34 55 0 0 51 31 14 14 27 55.7 22 194 -12 50 3 6 53 6 1 49 54 27 53 16 6 -2.34 56 0 0 51 9 34 14 27 59.8 22 195 -12 49 42 12 52 43 24 49 33 37 52 53 23 -2.35 57 0 0 50 48 34 14 28 3.8 23 196 -13 49 21 55 52 21 30 49 13 24 52 31 23 -2.35 58 0 0 50 28 12 14 28 7.9 23 197 -13 49 2 16 52 0 18 48 53 48 52 10 4 -2.35 59 0 0 50 8 32 14 28 12.0 23 198 -14 48 43 15 51 39 48 48 34 51 51 49 29 -2.35 60 0 0 49 49 32 14 28 16.1 23 199 -15 48 24 53 51 20 1 48 16 33 51 29 37 -2.35 61 0 0 49 31 12 14 28 20.2 23 200 -15 48 7 9 51 0 58 47 58 53 51 10 28 -2.36 62 0 0 49 13 33 14 28 24.3 23 202 -16 47 50 5 50 42 37 47 41 52 50 52 2 -2.36 63 0 0 48 56 36 14 28 28.4 23 203 -17 47 33 41 50 24 59 47 25 30 50 34 20 -2.36 64 0 0 48 40 20 14 28 32.5 23 204 -18 47 17 56 50 8 5 47 9 48 50 17 22 -2.36 65 0 0 48 24 45 14 28 36.6 23 205 -18 47 2 50 49 51 54 46 54 46 50 1 7 -2.36 66 0 0 48 9 51 14 28 40.7 23 206 -19 46 48 25 49 36 27 46 40 23 49 45 35 -2.36 67 0 0 47 55 40 14 28 44.8 23 207 -20 46 34 41 49 21 43 46 26 41 49 30 48 -2.37 68 0 0 47 42 10 14 28 48.8 23 208 -20 46 21 36 49 7 43 46 13 39 49 16 45 -2.37 69 0 0 47 29 23 14 28 52.8 23 209 -21 46 9 13 48 54 27 46 1 17 49 3 26 -2.37 70 0 0 47 17 17 14 28 56.8 22 210 -22 45 57 30 48 41 55 45 49 36 48 50 51 -2.37 71 0 0 47 5 54 14 29 0.7 22 211 -22 45 46 27 48 30 7 45 38 36 48 39 0 -2.37 72 0 0 46 55 14 14 29 4.6 22 212 -23 45 36 6 48 19 3 45 28 17 48 27 53 -2.37 73 0 0 46 45 15 14 29 8.5 22 213 -24 45 26 26 48 8 43 45 18 38 48 17 31 -2.37 74 0 0 46 35 59 14 29 12.3 21 214 -25 45 17 27 47 59 8 45 9 41 48 7 53 -2.37 75 0 0 46 27 26 14 29 16.1 21 215 -25 45 9 10 47 50 16 45 1 25 47 58 59 -2.38 76 0 0 46 19 36 14 29 19.8 21 216 -26 45 1 33 47 42 8 44 53 50 47 50 50 -2.38 77 0 0 46 12 28 14 29 23.5 21 217 -27 44 54 38 47 34 45 44 46 56 47 43 25 -2.38 78 0 0 46 6 3 14 29 27.1 20 218 -27 44 48 25 47 28 6 44 40 44 47 36 44 -2.38 79 0 0 46 0 20 14 29 30.6 20 219 -28 44 42 52 47 22 11 44 35 12 47 30 48 -2.38 80 0 0 45 55 20 14 29 34.1 19 220 -29 44 38 2 47 17 0 44 30 23 47 25 36 -2.38 81 0 0 45 51 3 14 29 37.5 19 221 -30 44 33 53 47 12 33 44 26 14 47 21 8 -2.38 82 0 0 45 47 28 14 29 40.9 19 222 -30 44 30 25 47 8 51 44 22 48 47 17 25 -2.38 83 0 0 45 44 36 14 29 44.1 18 223 -31 44 27 39 47 5 53 44 20 2 47 14 25 -2.38 84 0 0 45 42 28 14 29 47.3 18 224 -32 44 25 35 47 3 38 44 17 58 47 12 11 -2.39 85 0 0 45 41 1 14 29 50.4 17 224 -32 44 24 12 47 2 8 44 16 35 47 10 40 -2.39 86 0 0 45 40 18 14 29 53.4 17 225 -33 44 23 30 47 1 22 44 15 54 47 9 54 -2.39 87 0 0 45 40 17 14 29 56.3 16 226 -34 44 23 30 47 1 20 44 15 54 47 9 52 -2.39 88 0 0 45 40 58 14 29 59.2 16 227 -34 44 24 11 47 2 2 44 16 34 47 10 33 -2.39 89 0 0 45 42 21 14 30 1.9 15 228 -35 44 25 33 47 3 27 44 17 56 47 11 59 -2.39 90 0 0 45 44 27 14 30 4.6 15 229 -36 44 27 36 47 5 37 44 19 59 47 14 9 -2.39 91 0 0 45 47 16 14 30 7.1 14 230 -36 44 30 20 47 8 30 44 22 43 47 17 2 -2.39 92 0 0 45 50 46 14 30 9.6 14 230 -37 44 33 46 47 12 6 44 26 9 47 20 40 -2.40 93 0 0 45 54 59 14 30 11.9 13 231 -37 44 37 53 47 16 27 44 30 15 47 25 1 -2.40 94 0 0 45 59 54 14 30 14.2 12 232 -38 44 42 40 47 21 31 44 35 2 47 30 7 -2.40 95 0 0 46 5 32 14 30 16.3 12 233 -39 44 48 9 47 27 19 44 40 29 47 35 55 -2.40 96 0 0 46 11 51 14 30 18.3 11 234 -39 44 54 18 47 33 50 44 46 37 47 42 27 -2.40 97 0 0 46 18 51 14 30 20.3 10 234 -40 45 1 7 47 41 4 44 53 26 47 49 43 -2.41 98 0 0 46 26 34 14 30 22.1 10 235 -40 45 8 37 47 49 1 45 0 54 47 57 42 -2.41 99 0 0 46 34 58 14 30 23.8 9 236 -41 45 16 48 47 57 41 45 9 4 48 6 24 -2.41 100 0 0 46 44 4 14 30 25.3 9 237 -41 45 25 38 48 7 5 45 17 53 48 15 50 -2.42 101 0 0 46 53 51 14 30 26.8 8 237 -42 45 35 9 48 17 11 45 27 22 48 25 58 -2.42 102 0 0 47 4 19 14 30 28.1 7 238 -42 45 45 19 48 28 0 45 37 31 48 36 50 -2.43 103 0 0 47 15 28 14 30 29.3 6 239 -42 45 56 10 48 39 32 45 48 19 48 48 24 -2.44 104 0 0 47 27 18 14 30 30.4 6 240 -43 46 7 39 48 51 46 45 59 47 49 0 41 -2.45 105 0 0 47 39 49 14 30 31.4 5 240 -43 46 19 48 49 4 43 46 11 54 49 13 41 -2.46 106 0 0 47 53 0 14 30 32.3 4 241 -44 46 32 36 49 18 22 46 24 40 49 27 23 -2.48 107 0 0 48 6 51 14 30 33.0 4 242 -44 46 46 3 49 32 43 46 38 5 49 41 47 -2.50 108 0 0 48 21 23 14 30 33.6 3 243 -44 47 0 9 49 47 45 46 52 8 49 56 53 -2.54 109 0 0 48 36 34 14 30 34.0 2 243 -44 47 14 53 50 3 30 47 6 49 50 12 41 -2.59 110 0 0 48 52 25 14 30 34.4 2 244 -45 47 30 15 50 19 56 47 22 9 50 29 12 -2.70 111 0 0 49 8 56 14 30 34.6 1 245 -45 47 46 16 50 37 4 47 38 7 50 46 23 -2.98 112 0 0 49 26 6 14 30 34.7 0 246 -45 48 2 54 .. .. .. 47 54 42 .. .. .. -5.61 113 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 48 11 54 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6283-00502-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 07 23.7330 DE: -15 29 34.856 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 07 23.7328 DE: -15 29 34.856 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * B mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (181) Eucharis asteroid class: approx. diameter [km]: 113 approx. diameter ["]: 0.042 distance from Earth [AU]: 3.76340 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#94 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): 0.011", 0.002", 97.921° remarks: * orbital elements for (181)Eucharis : Mean anomaly = 207.7916953634 deg Arg. of pericenter = 318.8648104693 deg Long. of node = 142.9843615016 deg Inclination = 18.8965029295 deg Eccentricity = 0.2081842919 Semimajor axis = 3.1248096246 AU Perihelion dist = 2.4742733455 AU Mag: H = 7.93, G = 0.15 Epoch of elements : MJD 60602.60310275 TDT (2024 Oct 19.6031) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#942023Apr24,5.78,2024,10,19,14.474475,0.239977,0.886733,10.697104,-2.887047,0.005784,0.000812,0.000000,0.000000 41.5289,-15.4546,-40.90,-10.30,False TYC 6283-00502-1,19.12325919,-15.4930154,11.74,11.40,11.22,0.0,0,,19.14675622,-15.4546221,3.17,2.92,0,0,0 181,Eucharis,14.51,113.378,3.7634,0,0,1.729,-6.74,,5.4,0 0,207.6841,2024,10,19,318.8648,142.9844,18.8965,0.20818,3.12481,2.47427,7.93,5.0,0.15 1.051,0.0110,0.0016,98,0.0021,Known errors,0.89,0,-1,-1 20241019_0502-1,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org