IOTA/IOTA-ES occultation update for (310) Margarita / UCAC4 351-074383 event on 2024 Mar 11, 23:17 UT Visible from Summary ------- On 2024 Mar 11 UT, the 32.3342681645748 km diameter asteroid (310) Margarita will occult a 11.4 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.11 mag to 14.45 mag (the magnitude of the asteroid) for at most 6.430 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 11, 23:06 - 2024 Mar 11, 23:29 * geocentric midpoint of event [JD]: 2460381.47082950 * magnitude of target star: 11.40 * magnitude drop [mag]: 3.11 * estimated maximum duration [s]: 6.430 * Moon: 4 % sunlit, 139° distance * Sun: 117° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 66 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 4.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.003", 101°) * approx speed of asteroid's shadow [km/s]: 5.0456 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 351-074383 by 310 Margarita on 2024 Mar 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 24 0 0 .. .. .... .. .. .. .. .. .. 60 0 8 .. .. .. 59 53 24 .. .. .. .... 25 0 0 59 55 38 23 7 43.0 1 134 -33 59 31 50 60 19 51 59 25 8 60 26 49 .... 26 0 0 59 27 7 23 7 43.5 1 135 -33 59 3 27 59 51 12 58 56 47 59 58 8 -1.01 27 0 0 58 58 32 23 7 44.3 2 136 -34 58 35 0 59 22 28 58 28 22 59 29 22 -1.26 28 0 0 58 29 55 23 7 45.5 3 137 -34 58 6 30 58 53 42 57 59 55 59 0 33 -1.38 29 0 0 58 1 16 23 7 47.2 3 138 -34 57 38 0 58 24 55 57 31 26 58 31 43 -1.45 30 0 0 57 32 37 23 7 49.2 4 138 -35 57 9 29 57 56 7 57 2 58 58 2 53 -1.49 31 0 0 57 3 59 23 7 51.7 5 139 -35 56 40 59 57 27 20 56 34 30 57 34 3 -1.53 32 0 0 56 35 23 23 7 54.7 6 140 -35 56 12 32 56 58 36 56 6 5 57 5 16 -1.55 33 0 0 56 6 51 23 7 58.0 6 141 -35 55 44 8 56 29 55 55 37 44 56 36 33 -1.57 34 0 0 55 38 23 23 8 1.8 7 142 -36 55 15 49 56 1 19 55 9 27 56 7 54 -1.59 35 0 0 55 10 2 23 8 6.1 8 143 -36 54 47 36 55 32 49 54 41 17 55 39 21 -1.60 36 0 0 54 41 48 23 8 10.8 8 144 -36 54 19 31 55 4 26 54 13 13 55 10 56 -1.61 37 0 0 54 13 43 23 8 16.0 9 144 -36 53 51 34 54 36 12 53 45 19 54 42 39 -1.62 38 0 0 53 45 47 23 8 21.7 10 145 -36 53 23 46 54 8 7 53 17 34 54 14 32 -1.63 39 0 0 53 18 2 23 8 27.8 11 146 -36 52 56 10 53 40 14 52 49 59 53 46 36 -1.64 40 0 0 52 50 30 23 8 34.3 11 147 -36 52 28 45 53 12 33 52 22 37 53 18 53 -1.64 41 0 0 52 23 10 23 8 41.4 12 148 -36 52 1 34 52 45 5 51 55 28 52 51 22 -1.65 42 0 0 51 56 5 23 8 48.9 13 149 -37 51 34 37 52 17 51 51 28 34 52 24 6 -1.65 43 0 0 51 29 16 23 8 56.9 14 150 -37 51 7 56 51 50 54 51 1 54 51 57 6 -1.66 44 0 0 51 2 43 23 9 5.3 14 151 -36 50 41 31 51 24 13 50 35 32 51 30 23 -1.66 45 0 0 50 36 29 23 9 14.2 15 151 -36 50 15 24 50 57 50 50 9 27 51 3 58 -1.67 46 0 0 50 10 33 23 9 23.5 16 152 -36 49 49 36 50 31 46 49 43 41 50 37 52 -1.67 47 0 0 49 44 57 23 9 33.4 16 153 -36 49 24 8 50 6 3 49 18 15 50 12 6 -1.68 48 0 0 49 19 43 23 9 43.6 17 154 -36 48 59 1 49 40 40 48 53 10 49 46 41 -1.68 49 0 0 48 54 50 23 9 54.3 18 155 -36 48 34 15 49 15 40 48 28 27 49 21 39 -1.69 50 0 0 48 30 20 23 10 5.4 18 156 -36 48 9 53 48 51 3 48 4 6 48 57 0 -1.69 51 0 0 48 6 15 23 10 17.0 19 157 -36 47 45 55 48 26 50 47 40 10 48 32 45 -1.69 52 0 0 47 42 34 23 10 28.9 20 158 -35 47 22 21 48 3 2 47 16 38 48 8 55 -1.70 53 0 0 47 19 20 23 10 41.3 20 159 -35 46 59 13 47 39 41 46 53 32 47 45 31 -1.70 54 0 0 46 56 32 23 10 54.1 21 160 -35 46 36 32 47 16 46 46 30 53 47 22 35 -1.70 55 0 0 46 34 12 23 11 7.3 21 161 -34 46 14 19 46 54 20 46 8 41 47 0 6 -1.71 56 0 0 46 12 21 23 11 20.8 22 162 -34 45 52 34 46 32 22 45 46 58 46 38 6 -1.71 57 0 0 45 50 59 23 11 34.7 23 163 -34 45 31 18 46 10 53 45 25 44 46 16 36 -1.72 58 0 0 45 30 7 23 11 49.0 23 164 -33 45 10 32 45 49 56 45 5 0 45 55 36 -1.72 59 0 0 45 9 47 23 12 3.6 24 165 -33 44 50 17 45 29 29 44 44 47 45 35 8 -1.72 60 0 0 44 49 58 23 12 18.6 24 166 -32 44 30 34 45 9 34 44 25 5 45 15 11 -1.73 61 0 0 44 30 41 23 12 33.8 25 167 -32 44 11 23 44 50 12 44 5 56 44 55 47 -1.73 62 0 0 44 11 58 23 12 49.4 25 168 -31 43 52 45 44 31 23 43 47 19 44 36 57 -1.73 63 0 0 43 53 48 23 13 5.3 26 169 -31 43 34 41 44 13 8 43 29 16 44 18 40 -1.74 64 0 0 43 36 13 23 13 21.4 26 170 -30 43 17 11 43 55 28 43 11 48 44 0 59 -1.74 65 0 0 43 19 13 23 13 37.8 26 171 -30 43 0 15 43 38 22 42 54 54 43 43 52 -1.74 66 0 0 43 2 48 23 13 54.4 27 172 -29 42 43 56 43 21 53 42 38 35 43 27 21 -1.75 67 0 0 42 47 0 23 14 11.3 27 174 -29 42 28 12 43 6 0 42 22 53 43 11 27 -1.75 68 0 0 42 31 48 23 14 28.4 27 175 -28 42 13 4 42 50 44 42 7 46 42 56 9 -1.75 69 0 0 42 17 13 23 14 45.6 28 176 -27 41 58 34 42 36 5 41 53 17 42 41 29 -1.75 70 0 0 42 3 16 23 15 3.1 28 177 -27 41 44 40 42 22 3 41 39 24 42 27 26 -1.76 71 0 0 41 49 57 23 15 20.7 28 178 -26 41 31 25 42 8 40 41 26 10 42 14 2 -1.76 72 0 0 41 37 16 23 15 38.4 29 179 -25 41 18 48 41 55 55 41 13 34 42 1 16 -1.76 73 0 0 41 25 14 23 15 56.3 29 180 -25 41 6 49 41 43 50 41 1 37 41 49 10 -1.76 74 0 0 41 13 51 23 16 14.3 29 182 -24 40 55 29 41 32 24 40 50 18 41 37 42 -1.77 75 0 0 41 3 8 23 16 32.4 29 183 -23 40 44 49 41 21 37 40 39 38 41 26 55 -1.77 76 0 0 40 53 4 23 16 50.6 29 184 -22 40 34 48 41 11 30 40 29 38 41 16 47 -1.77 77 0 0 40 43 40 23 17 8.8 29 185 -22 40 25 27 41 2 4 40 20 18 41 7 20 -1.77 78 0 0 40 34 57 23 17 27.1 29 186 -21 40 16 47 40 53 18 40 11 38 40 58 33 -1.77 79 0 0 40 26 54 23 17 45.4 29 187 -20 40 8 46 40 45 13 40 3 38 40 50 27 -1.78 80 0 0 40 19 32 23 18 3.7 29 189 -19 40 1 27 40 37 49 39 56 19 40 43 2 -1.78 81 0 0 40 12 51 23 18 22.1 29 190 -19 39 54 47 40 31 5 39 49 41 40 36 18 -1.78 82 0 0 40 6 51 23 18 40.3 29 191 -18 39 48 49 40 25 3 39 43 42 40 30 16 -1.78 83 0 0 40 1 31 23 18 58.6 29 192 -17 39 43 31 40 19 41 39 38 25 40 24 54 -1.78 84 0 0 39 56 53 23 19 16.8 29 193 -16 39 38 54 40 15 2 39 33 49 40 20 13 -1.78 85 0 0 39 52 55 23 19 34.9 29 194 -15 39 34 58 40 11 3 39 29 53 40 16 15 -1.78 86 0 0 39 49 39 23 19 52.9 29 195 -15 39 31 43 40 7 46 39 26 39 40 12 57 -1.78 87 0 0 39 47 5 23 20 10.8 29 197 -14 39 29 9 40 5 10 39 24 5 40 10 21 -1.78 88 0 0 39 45 11 23 20 28.6 28 198 -13 39 27 17 40 3 16 39 22 13 40 8 26 -1.79 89 0 0 39 43 59 23 20 46.2 28 199 -12 39 26 5 40 2 3 39 21 1 40 7 13 -1.79 90 0 0 39 43 28 23 21 3.7 28 200 -11 39 25 34 40 1 32 39 20 30 40 6 42 -1.79 91 0 0 39 43 38 23 21 21.0 28 201 -11 39 25 44 40 1 41 39 20 41 40 6 52 -1.79 92 0 0 39 44 29 23 21 38.2 27 202 -10 39 26 36 40 2 32 39 21 32 40 7 43 -1.79 93 0 0 39 46 1 23 21 55.1 27 203 -9 39 28 8 40 4 4 39 23 4 40 9 15 -1.79 94 0 0 39 48 14 23 22 11.8 27 204 -8 39 30 20 40 6 17 39 25 16 40 11 28 -1.78 95 0 0 39 51 7 23 22 28.3 26 205 -7 39 33 13 40 9 11 39 28 9 40 14 22 -1.78 96 0 0 39 54 41 23 22 44.5 26 206 -6 39 36 46 40 12 46 39 31 42 40 17 56 -1.78 97 0 0 39 58 55 23 23 0.5 25 207 -6 39 41 0 40 17 1 39 35 55 40 22 12 -1.78 98 0 0 40 3 50 23 23 16.2 25 208 -5 39 45 53 40 21 56 39 40 48 40 27 7 -1.78 99 0 0 40 9 24 23 23 31.6 24 209 -4 39 51 26 40 27 31 39 46 21 40 32 43 -1.78 100 0 0 40 15 37 23 23 46.8 24 210 -3 39 57 38 40 33 46 39 52 33 40 38 58 -1.78 101 0 0 40 22 30 23 24 1.6 23 211 -2 40 4 30 40 40 41 39 59 24 40 45 53 -1.78 102 0 0 40 30 2 23 24 16.1 23 212 -2 40 12 0 40 48 15 40 6 54 40 53 27 -1.78 103 0 0 40 38 13 23 24 30.2 22 213 -1 40 20 9 40 56 27 40 15 2 41 1 40 -1.78 104 0 0 40 47 2 23 24 44.0 22 214 0 40 28 56 41 5 18 40 23 49 41 10 32 -1.78 105 0 0 40 56 29 23 24 57.5 21 215 1 40 38 21 41 14 47 40 33 13 41 20 2 -1.78 106 0 0 41 6 34 23 25 10.5 21 216 2 40 48 23 41 24 55 40 43 15 41 30 10 -1.78 107 0 0 41 17 16 23 25 23.2 20 217 2 40 59 3 41 35 39 40 53 53 41 40 55 -1.77 108 0 0 41 28 34 23 25 35.5 19 218 3 41 10 19 41 47 1 41 5 9 41 52 18 -1.77 109 0 0 41 40 30 23 25 47.4 19 219 4 41 22 11 41 58 59 41 17 0 42 4 17 -1.77 110 0 0 41 53 1 23 25 58.9 18 219 5 41 34 39 42 11 34 41 29 28 42 16 52 -1.77 111 0 0 42 6 8 23 26 10.0 17 220 5 41 47 43 42 24 44 41 42 31 42 30 4 -1.77 112 0 0 42 19 50 23 26 20.7 17 221 6 42 1 22 42 38 30 41 56 8 42 43 50 -1.77 113 0 0 42 34 7 23 26 30.9 16 222 7 42 15 35 42 52 50 42 10 21 42 58 12 -1.77 114 0 0 42 48 58 23 26 40.7 15 223 7 42 30 22 43 7 45 42 25 7 43 13 8 -1.77 115 0 0 43 4 22 23 26 50.0 15 223 8 42 45 43 43 23 13 42 40 26 43 28 37 -1.77 116 0 0 43 20 20 23 26 58.9 14 224 9 43 1 36 43 39 15 42 56 18 43 44 40 -1.77 117 0 0 43 36 50 23 27 7.4 13 225 10 43 18 2 43 55 49 43 12 43 44 1 16 -1.77 118 0 0 43 53 52 23 27 15.3 12 226 10 43 34 59 44 12 56 43 29 39 44 18 24 -1.77 119 0 0 44 11 25 23 27 22.8 12 227 11 43 52 28 44 30 34 43 47 7 44 36 3 -1.77 120 0 0 44 29 29 23 27 29.9 11 227 11 44 10 28 44 48 43 44 5 5 44 54 14 -1.77 121 0 0 44 48 3 23 27 36.4 10 228 12 44 28 57 45 7 22 44 23 33 45 12 54 -1.77 122 0 0 45 7 7 23 27 42.5 9 229 13 44 47 55 45 26 31 44 42 30 45 32 5 -1.77 123 0 0 45 26 39 23 27 48.1 9 230 13 45 7 22 45 46 9 45 1 55 45 51 44 -1.77 124 0 0 45 46 40 23 27 53.2 8 230 14 45 27 17 46 6 15 45 21 49 46 11 52 -1.78 125 0 0 46 7 8 23 27 57.9 7 231 14 45 47 40 46 26 48 45 42 10 46 32 27 -1.78 126 0 0 46 28 2 23 28 2.0 6 232 15 46 8 29 46 47 49 46 2 57 46 53 29 -1.78 127 0 0 46 49 23 23 28 5.7 6 233 15 46 29 43 47 9 16 46 24 10 47 14 58 -1.79 128 0 0 47 11 8 23 28 8.9 5 233 16 46 51 23 47 31 8 46 45 48 47 36 52 -1.80 129 0 0 47 33 19 23 28 11.6 4 234 16 47 13 27 47 53 24 47 7 51 47 59 10 -1.81 130 0 0 47 55 53 23 28 13.8 3 235 17 47 35 55 48 16 5 47 30 17 48 21 53 -1.83 131 0 0 48 18 50 23 28 15.6 3 236 17 47 58 45 48 39 9 47 53 5 48 44 58 -1.87 132 0 0 48 42 9 23 28 16.8 2 236 18 48 21 58 49 2 35 48 16 16 49 8 26 -1.92 133 0 0 49 5 49 23 28 17.6 1 237 18 48 45 31 49 26 22 48 39 48 49 32 16 -2.07 134 0 0 49 29 50 23 28 18.0 0 238 19 49 9 25 49 50 30 49 3 40 49 56 26 -3.07 Uncertainty in time = +/- 5 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: UCAC4 351-074383 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 25 34.5384 DE: -19 55 51.721 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 25 34.5385 DE: -19 55 51.721 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * B mag [mag]: 12.1 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (310) Margarita asteroid class: approx. diameter [km]: 32 approx. diameter ["]: 0.024 distance from Earth [AU]: 1.83010 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.017", 0.003", 101.2° remarks: * orbital elements for (310)Margarita : Mean anomaly = 15.0101633184 deg Arg. of pericenter = 324.8962577563 deg Long. of node = 229.0410468424 deg Inclination = 3.1718203561 deg Eccentricity = 0.1169498416 Semimajor axis = 2.7611376722 AU Perihelion dist = 2.4382230589 AU Mag: H = 10.16, G = 0.15 Epoch of elements : MJD 60380.97082963 TDT (2024 Mar 11.9708) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,6.43,2024,3,11,23.299908,0.101418,0.864048,2.828480,-0.331584,-0.004909,0.001304,0.000001,0.000000 72.1407,-20.0170,-167.06,-3.22,False UCAC4 351-074383,15.42626066,-19.9310336,12.08,11.40,11.03,0.1,0,,15.44953457,-20.0170164,3.12,3.04,0,0,0 310,Margarita,14.45,32.467,1.8301,0,0,0.964,-1.59,,1.6,0 0,14.8016,2024,3,11,324.8963,229.0410,3.1718,0.11695,2.76114,2.43822,10.16,5.0,0.15 1.142,0.0173,0.0032,101,0.0035,Known errors,1.17,0,-1,-1 20240311_074383,60139.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org