IOTA/IOTA-ES occultation update for (370) Modestia / TYC 6304-01682-1 event on 2024 Oct 11, 18:45 UT Visible from Summary ------- On 2024 Oct 11 UT, the 41.138 km diameter asteroid (370) Modestia will occult a 11.6 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 3.48 mag to 15.05 mag (the magnitude of the asteroid) for at most 2.160 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 11, 18:42 - 2024 Oct 11, 18:48 * geocentric midpoint of event [JD]: 2460595.28148362 * magnitude of target star: 11.62 * magnitude drop [mag]: 3.48 * estimated maximum duration [s]: 2.160 * Moon: 61 % sunlit, 16° distance * Sun: 89° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 88 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.003", 74°) * approx speed of asteroid's shadow [km/s]: 19.0485 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6304-01682-1 by 370 Modestia on 2024 Oct 11 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 - 81 0 0 47 28 47 18 42 45.3 0 119 32 47 1 49 47 56 14 46 56 11 .. .. .. .... - 80 0 0 47 7 6 18 42 45.4 1 119 32 46 40 19 47 34 21 46 34 43 47 40 10 -0.91 - 79 0 0 46 45 57 18 42 45.7 2 120 32 46 19 19 47 13 1 46 13 46 47 18 48 -1.34 - 78 0 0 46 25 19 18 42 46.0 3 121 31 45 58 52 46 52 13 45 53 20 46 57 57 -1.51 - 77 0 0 46 5 14 18 42 46.5 3 122 31 45 38 56 46 31 58 45 33 26 46 37 40 -1.60 - 76 0 0 45 45 42 18 42 47.1 4 122 31 45 19 33 46 12 16 45 14 5 46 17 56 -1.66 - 75 0 0 45 26 43 18 42 47.9 5 123 31 45 0 44 45 53 9 44 55 17 45 58 46 -1.70 - 74 0 0 45 8 19 18 42 48.7 6 124 31 44 42 27 45 34 35 44 37 3 45 40 11 -1.73 - 73 0 0 44 50 28 18 42 49.7 6 124 31 44 24 45 45 16 36 44 19 22 45 22 10 -1.75 - 72 0 0 44 33 13 18 42 50.9 7 125 31 44 7 37 44 59 12 44 2 16 45 4 44 -1.77 - 71 0 0 44 16 32 18 42 52.1 8 126 30 43 51 4 44 42 23 43 45 45 44 47 54 -1.78 - 70 0 0 44 0 27 18 42 53.5 9 127 30 43 35 6 44 26 11 43 29 48 44 31 40 -1.80 - 69 0 0 43 44 58 18 42 55.0 9 127 30 43 19 44 44 10 34 43 14 27 44 16 1 -1.81 - 68 0 0 43 30 4 18 42 56.7 10 128 30 43 4 57 43 55 34 42 59 42 44 1 0 -1.81 - 67 0 0 43 15 47 18 42 58.4 11 129 29 42 50 47 43 41 10 42 45 33 43 46 35 -1.82 - 66 0 0 43 2 7 18 43 0.3 12 130 29 42 37 12 43 27 24 42 31 59 43 32 47 -1.83 - 65 0 0 42 49 4 18 43 2.3 12 130 29 42 24 15 43 14 15 42 19 3 43 19 36 -1.84 - 64 0 0 42 36 38 18 43 4.4 13 131 28 42 11 54 43 1 43 42 6 44 43 7 4 -1.84 - 63 0 0 42 24 49 18 43 6.6 14 132 28 42 0 11 42 49 49 41 55 1 42 55 9 -1.85 - 62 0 0 42 13 39 18 43 9.0 14 133 27 41 49 5 42 38 33 41 43 56 42 43 52 -1.85 - 61 0 0 42 3 6 18 43 11.4 15 133 27 41 38 36 42 27 56 41 33 29 42 33 13 -1.86 - 60 0 0 41 53 11 18 43 14.0 16 134 26 41 28 45 42 17 57 41 23 39 42 23 13 -1.86 - 59 0 0 41 43 54 18 43 16.6 16 135 26 41 19 33 42 8 36 41 14 27 42 13 51 -1.86 - 58 0 0 41 35 16 18 43 19.4 17 136 25 41 10 58 41 59 54 41 5 53 42 5 9 -1.87 - 57 0 0 41 27 16 18 43 22.3 18 137 25 41 3 2 41 51 51 40 57 57 41 57 5 -1.87 - 56 0 0 41 19 56 18 43 25.2 18 137 24 40 55 44 41 44 27 40 50 40 41 49 40 -1.87 - 55 0 0 41 13 14 18 43 28.3 19 138 24 40 49 5 41 37 43 40 44 2 41 42 55 -1.88 - 54 0 0 41 7 11 18 43 31.5 19 139 23 40 43 5 41 31 37 40 38 2 41 36 50 -1.88 - 53 0 0 41 1 48 18 43 34.7 20 140 23 40 37 44 41 26 12 40 32 41 41 31 23 -1.88 - 52 0 0 40 57 4 18 43 38.1 20 141 22 40 33 1 41 21 26 40 27 59 41 26 37 -1.88 - 51 0 0 40 52 59 18 43 41.5 21 142 21 40 28 58 41 17 19 40 23 56 41 22 30 -1.89 - 50 0 0 40 49 34 18 43 45.0 21 143 21 40 25 34 41 13 53 40 20 33 41 19 3 -1.89 - 49 0 0 40 46 48 18 43 48.6 22 143 20 40 22 50 41 11 6 40 17 49 41 16 17 -1.89 - 48 0 0 40 44 42 18 43 52.3 22 144 19 40 20 45 41 9 0 40 15 44 41 14 10 -1.89 - 47 0 0 40 43 16 18 43 56.0 23 145 19 40 19 19 41 7 33 40 14 18 41 12 43 -1.89 - 46 0 0 40 42 30 18 43 59.9 23 146 18 40 18 33 41 6 47 40 13 32 41 11 57 -1.89 - 45 0 0 40 42 24 18 44 3.7 24 147 17 40 18 26 41 6 40 40 13 25 41 11 50 -1.90 - 44 0 0 40 42 57 18 44 7.7 24 148 17 40 18 59 41 7 14 40 13 58 41 12 24 -1.90 - 43 0 0 40 44 11 18 44 11.7 25 149 16 40 20 12 41 8 28 40 15 11 41 13 39 -1.90 - 42 0 0 40 46 4 18 44 15.8 25 150 15 40 22 5 41 10 23 40 17 3 41 15 33 -1.90 - 41 0 0 40 48 37 18 44 19.9 25 151 15 40 24 36 41 12 57 40 19 35 41 18 8 -1.90 - 40 0 0 40 51 50 18 44 24.1 26 152 14 40 27 48 41 16 12 40 22 46 41 21 23 -1.90 - 39 0 0 40 55 43 18 44 28.4 26 153 13 40 31 39 41 20 7 40 26 37 41 25 19 -1.90 - 38 0 0 41 0 16 18 44 32.6 26 154 12 40 36 10 41 24 42 40 31 7 41 29 54 -1.91 - 37 0 0 41 5 29 18 44 37.0 26 155 12 40 41 21 41 29 58 40 36 17 41 35 10 -1.91 - 36 0 0 41 11 22 18 44 41.3 27 156 11 40 47 11 41 35 53 40 42 7 41 41 6 -1.91 - 35 0 0 41 17 54 18 44 45.7 27 157 10 40 53 40 41 42 28 40 48 35 41 47 42 -1.91 - 34 0 0 41 25 6 18 44 50.2 27 158 9 41 0 49 41 49 44 40 55 44 41 54 59 -1.91 - 33 0 0 41 32 58 18 44 54.6 27 159 9 41 8 37 41 57 39 41 3 31 42 2 55 -1.91 - 32 0 0 41 41 29 18 44 59.1 27 160 8 41 17 4 42 6 14 41 11 57 42 11 31 -1.91 - 31 0 0 41 50 39 18 45 3.6 27 161 7 41 26 10 42 15 29 41 21 3 42 20 46 -1.91 - 30 0 0 42 0 29 18 45 8.1 27 162 6 41 35 56 42 25 24 41 30 47 42 30 42 -1.91 - 29 0 0 42 10 58 18 45 12.7 28 164 6 41 46 20 42 35 57 41 41 10 42 41 17 -1.91 - 28 0 0 42 22 6 18 45 17.2 28 165 5 41 57 22 42 47 11 41 52 12 42 52 31 -1.91 - 27 0 0 42 33 52 18 45 21.7 28 166 4 42 9 4 42 59 3 42 3 52 43 4 25 -1.91 - 26 0 0 42 46 18 18 45 26.3 28 167 3 42 21 23 43 11 34 42 16 11 43 16 57 -1.92 - 25 0 0 42 59 21 18 45 30.8 28 168 2 42 34 21 43 24 44 42 29 7 43 30 8 -1.92 - 24 0 0 43 13 3 18 45 35.4 27 169 2 42 47 57 43 38 32 42 42 41 43 43 58 -1.92 - 23 0 0 43 27 23 18 45 39.9 27 170 1 43 2 10 43 52 59 42 56 53 43 58 26 -1.92 - 22 0 0 43 42 21 18 45 44.4 27 171 0 43 17 0 44 8 4 43 11 42 44 13 33 -1.92 - 21 0 0 43 57 56 18 45 48.9 27 172 -1 43 32 28 44 23 46 43 27 8 44 29 17 -1.92 - 20 0 0 44 14 8 18 45 53.4 27 173 -1 43 48 32 44 40 7 43 43 11 44 45 39 -1.92 - 19 0 0 44 30 57 18 45 57.8 27 175 -2 44 5 13 44 57 4 43 59 51 45 2 38 -1.92 - 18 0 0 44 48 22 18 46 2.2 26 176 -3 44 22 30 45 14 38 44 17 6 45 20 14 -1.92 - 17 0 0 45 6 23 18 46 6.6 26 177 -4 44 40 23 45 32 48 44 34 57 45 38 26 -1.92 - 16 0 0 45 25 0 18 46 10.9 26 178 -4 44 58 51 45 51 35 44 53 23 45 57 15 -1.92 - 15 0 0 45 44 13 18 46 15.2 26 179 -5 45 17 55 46 10 57 45 12 25 46 16 39 -1.92 - 14 0 0 46 4 1 18 46 19.5 25 180 -6 45 37 33 46 30 55 45 32 1 46 36 39 -1.92 - 13 0 0 46 24 23 18 46 23.6 25 181 -7 45 57 45 46 51 27 45 52 11 46 57 14 -1.92 - 12 0 0 46 45 19 18 46 27.8 25 182 -7 46 18 31 47 12 34 46 12 54 47 18 23 -1.92 - 11 0 0 47 6 48 18 46 31.9 24 183 -8 46 39 49 47 34 15 46 34 11 47 40 6 -1.92 - 10 0 0 47 28 50 18 46 35.9 24 184 -9 47 1 41 47 56 28 46 56 0 48 2 22 -1.92 - 9 0 0 47 51 25 18 46 39.8 23 185 -10 47 24 4 48 19 15 47 18 21 48 25 11 -1.92 - 8 0 0 48 14 31 18 46 43.7 23 186 -10 47 46 59 48 42 34 47 41 13 48 48 33 -1.92 - 7 0 0 48 38 9 18 46 47.5 22 187 -11 48 10 24 49 6 24 48 4 36 49 12 26 -1.92 - 6 0 0 49 2 17 18 46 51.2 22 188 -12 48 34 20 49 30 45 48 28 30 49 36 50 -1.92 - 5 0 0 49 26 55 18 46 54.8 21 189 -12 48 58 45 49 55 37 48 52 52 50 1 45 -1.92 - 4 0 0 49 52 2 18 46 58.4 21 190 -13 49 23 39 50 20 58 49 17 44 50 27 9 -1.92 - 3 0 0 50 17 38 18 47 1.9 20 191 -13 49 49 1 50 46 48 49 43 3 50 53 2 -1.92 - 2 0 0 50 43 41 18 47 5.2 20 192 -14 50 14 51 51 13 5 50 8 50 51 19 23 -1.92 - 1 0 0 51 10 11 18 47 8.5 19 193 -15 50 41 6 51 39 50 50 35 2 51 46 11 -1.92 0 0 0 51 37 6 18 47 11.7 19 194 -15 51 7 48 52 7 2 51 1 41 52 13 25 -1.92 1 0 0 52 4 27 18 47 14.7 18 195 -16 51 34 53 52 34 38 51 28 43 52 41 5 -1.92 2 0 0 52 32 12 18 47 17.7 17 196 -16 52 2 23 53 2 39 51 56 10 53 9 10 -1.92 3 0 0 53 0 20 18 47 20.6 17 197 -17 52 30 15 53 31 3 52 23 59 53 37 38 -1.92 4 0 0 53 28 50 18 47 23.3 16 198 -17 52 58 29 53 59 50 52 52 10 54 6 28 -1.93 5 0 0 53 57 41 18 47 26.0 16 199 -18 53 27 4 54 28 59 53 20 41 54 35 41 -1.93 6 0 0 54 26 51 18 47 28.5 15 200 -18 53 55 58 54 58 27 53 49 32 55 5 13 -1.93 7 0 0 54 56 21 18 47 30.9 14 201 -19 54 25 11 55 28 15 54 18 42 55 35 4 -1.93 8 0 0 55 26 8 18 47 33.2 14 202 -19 54 54 41 55 58 20 54 48 9 56 5 14 -1.93 9 0 0 55 56 12 18 47 35.4 13 203 -20 55 24 28 56 28 42 55 17 51 56 35 40 -1.93 10 0 0 56 26 31 18 47 37.5 12 204 -20 55 54 29 56 59 20 55 47 49 57 6 23 -1.93 11 0 0 56 57 4 18 47 39.4 11 204 -20 56 24 44 57 30 12 56 18 1 57 37 19 -1.94 12 0 0 57 27 49 18 47 41.2 11 205 -21 56 55 12 58 1 17 56 48 24 58 8 28 -1.94 13 0 0 57 58 46 18 47 42.9 10 206 -21 57 25 50 58 32 34 57 18 59 58 39 49 -1.94 14 0 0 58 29 53 18 47 44.5 9 207 -21 57 56 38 59 4 0 57 49 44 59 11 20 -1.94 15 0 0 59 1 7 18 47 45.9 9 208 -22 58 27 35 59 35 35 58 20 36 59 42 59 -1.94 16 0 0 59 32 29 18 47 47.3 8 209 -22 58 58 38 60 7 17 58 51 36 60 14 46 -1.95 17 0 0 60 3 56 18 47 48.5 7 210 -22 59 29 46 60 39 5 59 22 41 60 46 38 -1.95 18 0 0 60 35 27 18 47 49.6 7 211 -22 60 0 59 61 10 56 59 53 49 61 18 34 -1.96 19 0 0 61 7 1 18 47 50.5 6 212 -23 60 32 13 61 42 50 60 25 0 61 50 32 -1.96 20 0 0 61 38 35 18 47 51.4 5 212 -23 61 3 29 62 14 44 60 56 12 62 22 31 -1.97 21 0 0 62 10 8 18 47 52.1 4 213 -23 61 34 43 62 46 38 61 27 22 62 54 29 -1.98 22 0 0 62 41 38 18 47 52.7 4 214 -23 62 5 55 63 18 28 61 58 31 63 26 24 -1.99 23 0 0 63 13 4 18 47 53.3 3 215 -23 62 37 3 63 50 14 62 29 35 63 58 15 -2.01 24 0 0 63 44 25 18 47 53.7 2 216 -23 63 8 6 64 21 54 63 0 34 64 29 59 -2.04 25 0 0 64 15 38 18 47 53.9 2 217 -23 63 39 1 64 53 27 63 31 26 65 1 36 -2.09 26 0 0 64 46 41 18 47 54.1 1 218 -23 64 9 47 65 24 49 64 2 9 65 33 3 -2.21 27 0 0 65 17 34 18 47 54.2 0 219 -23 64 40 23 .. .. .. 64 32 41 .. .. .. -2.74 28 0 0 .. .. .... .. .. .. .. .. .. 65 10 47 .. .. .. 65 3 2 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6304-01682-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 12 27.5147 DE: -18 49 42.471 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 12 27.5145 DE: -18 49 42.471 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.6 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (370) Modestia asteroid class: approx. diameter [km]: 41 approx. diameter ["]: 0.029 distance from Earth [AU]: 1.94780 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): 0.020", 0.003", 73.987° remarks: * orbital elements for (370)Modestia : Mean anomaly = 322.2962536597 deg Arg. of pericenter = 68.5972189499 deg Long. of node = 290.8796078280 deg Inclination = 7.8621605039 deg Eccentricity = 0.0905002374 Semimajor axis = 2.3244503882 AU Perihelion dist = 2.1140870763 AU Mag: H = 10.71, G = 0.15 Epoch of elements : MJD 60594.78148338 TDT (2024 Oct 11.7815) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,2.16,2024,10,11,18.755607,-0.174133,0.867364,10.540733,2.118331,0.005401,0.000701,0.000000,0.000000 -13.7042,-18.7874,-104.70,-7.42,False TYC 6304-01682-1,19.20764299,-18.8284641,11.99,11.62,11.42,0.0,0,,19.23173166,-18.7874217,3.48,3.24,0,0,0 370,Modestia,15.05,41.138,1.9478,0,0,3.352,9.56,,2.4,0 0,322.0789,2024,10,11,68.5972,290.8796,7.8622,0.09050,2.32445,2.11409,10.70,5.0,0.15 1.106,0.0203,0.0026,74,0.0031,Known errors,0.88,0,-1,-1 20241011_1682-1,60140.63 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org