IOTA/IOTA-ES occultation update for (3889) Menshikov / UCAC4 332-162019 event on 2024 Oct 10, 12:53 UT Visible from Summary ------- On 2024 Oct 10 UT, the 14.1811906283207 km diameter asteroid (3889) Menshikov will occult a 10.3 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 7.67 mag to 17.96 mag (the magnitude of the asteroid) for at most 0.620 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 10, 12:50 - 2024 Oct 10, 12:56 * geocentric midpoint of event [JD]: 2460594.03691804 * magnitude of target star: 10.29 * magnitude drop [mag]: 7.67 * estimated maximum duration [s]: 0.620 * Moon: 48 % sunlit, 10° distance * Sun: 79° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.002", 92°) * approx speed of asteroid's shadow [km/s]: 23.7812 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 332-162019 by 3889 Menshikov on 2024 Oct 10 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 1 0 0 43 34 9 12 50 15.1 1 124 37 43 26 54 43 41 25 43 23 37 43 44 44 .... 2 0 0 43 5 13 12 50 15.2 2 125 38 42 57 59 43 12 28 42 54 43 43 15 45 -0.67 3 0 0 42 36 24 12 50 15.4 2 126 38 42 29 12 42 43 38 42 25 57 42 46 55 -0.84 4 0 0 42 7 45 12 50 15.7 3 126 38 42 0 35 42 14 57 41 57 20 42 18 13 -0.92 5 0 0 41 39 16 12 50 16.1 4 127 38 41 32 7 41 46 26 41 28 53 41 49 41 -0.97 6 0 0 41 10 57 12 50 16.6 5 128 38 41 3 50 41 18 6 41 0 37 41 21 20 -1.00 7 0 0 40 42 51 12 50 17.2 6 128 38 40 35 45 40 49 57 40 32 33 40 53 11 -1.02 8 0 0 40 14 57 12 50 17.9 7 129 38 40 7 53 40 22 2 40 4 41 40 25 15 -1.04 9 0 0 39 47 17 12 50 18.8 8 130 38 39 40 15 39 54 21 39 37 4 39 57 33 -1.05 10 0 0 39 19 53 12 50 19.7 9 130 38 39 12 52 39 26 54 39 9 42 39 30 6 -1.06 11 0 0 38 52 44 12 50 20.7 10 131 38 38 45 45 38 59 43 38 42 35 39 2 54 -1.07 12 0 0 38 25 51 12 50 21.8 10 132 38 38 18 54 38 32 49 38 15 45 38 35 59 -1.08 13 0 0 37 59 16 12 50 23.0 11 132 38 37 52 21 38 6 13 37 49 13 38 9 22 -1.09 14 0 0 37 33 0 12 50 24.3 12 133 38 37 26 6 37 39 55 37 22 59 37 43 3 -1.09 15 0 0 37 7 3 12 50 25.7 13 134 37 37 0 11 37 13 56 36 57 4 37 17 4 -1.10 16 0 0 36 41 26 12 50 27.3 14 134 37 36 34 36 36 48 17 36 31 30 36 51 24 -1.10 17 0 0 36 16 10 12 50 28.9 15 135 37 36 9 21 36 23 0 36 6 16 36 26 6 -1.10 18 0 0 35 51 15 12 50 30.6 16 136 37 35 44 28 35 58 3 35 41 24 36 1 9 -1.11 19 0 0 35 26 43 12 50 32.4 17 136 36 35 19 58 35 33 30 35 16 54 35 36 34 -1.11 20 0 0 35 2 34 12 50 34.3 17 137 36 34 55 50 35 9 19 34 52 47 35 12 23 -1.11 21 0 0 34 38 49 12 50 36.3 18 138 36 34 32 7 34 45 32 34 29 5 34 48 36 -1.12 22 0 0 34 15 28 12 50 38.4 19 138 35 34 8 48 34 22 10 34 5 46 34 25 13 -1.12 23 0 0 33 52 33 12 50 40.6 20 139 35 33 45 54 33 59 13 33 42 53 34 2 15 -1.12 24 0 0 33 30 3 12 50 42.9 21 140 35 33 23 26 33 36 42 33 20 26 33 39 43 -1.12 25 0 0 33 8 0 12 50 45.3 22 140 34 33 1 24 33 14 37 32 58 25 33 17 38 -1.12 26 0 0 32 46 24 12 50 47.7 22 141 34 32 39 49 32 53 0 32 36 50 32 55 59 -1.13 27 0 0 32 25 15 12 50 50.3 23 142 33 32 18 42 32 31 49 32 15 44 32 34 49 -1.13 28 0 0 32 4 34 12 50 52.9 24 143 33 31 58 3 32 11 7 31 55 5 32 14 6 -1.13 29 0 0 31 44 22 12 50 55.7 25 143 32 31 37 52 31 50 54 31 34 55 31 53 52 -1.13 30 0 0 31 24 39 12 50 58.5 26 144 32 31 18 10 31 31 9 31 15 14 31 34 7 -1.13 31 0 0 31 5 26 12 51 1.4 26 145 31 30 58 58 31 11 55 30 56 3 31 14 51 -1.13 32 0 0 30 46 43 12 51 4.3 27 146 31 30 40 16 30 53 10 30 37 21 30 56 6 -1.13 33 0 0 30 28 30 12 51 7.4 28 146 30 30 22 5 30 34 56 30 19 10 30 37 52 -1.14 34 0 0 30 10 48 12 51 10.5 29 147 29 30 4 24 30 17 13 30 1 30 30 20 8 -1.14 35 0 0 29 53 38 12 51 13.7 29 148 29 29 47 15 30 0 2 29 44 22 30 2 56 -1.14 36 0 0 29 36 59 12 51 17.0 30 149 28 29 30 37 29 43 22 29 27 45 29 46 16 -1.14 37 0 0 29 20 52 12 51 20.3 31 150 27 29 14 32 29 27 14 29 11 40 29 30 7 -1.14 38 0 0 29 5 18 12 51 23.7 31 151 27 28 58 59 29 11 38 28 56 7 29 14 31 -1.14 39 0 0 28 50 17 12 51 27.2 32 152 26 28 43 58 28 56 36 28 41 7 28 59 28 -1.14 40 0 0 28 35 48 12 51 30.7 33 153 25 28 29 31 28 42 6 28 26 40 28 44 58 -1.14 41 0 0 28 21 53 12 51 34.3 33 153 25 28 15 36 28 28 10 28 12 46 28 31 1 -1.14 42 0 0 28 8 31 12 51 37.9 34 154 24 28 2 15 28 14 47 27 59 25 28 17 38 -1.15 43 0 0 27 55 43 12 51 41.6 34 155 23 27 49 29 28 1 59 27 46 39 28 4 49 -1.15 44 0 0 27 43 29 12 51 45.4 35 156 22 27 37 16 27 49 44 27 34 26 27 52 34 -1.15 45 0 0 27 31 50 12 51 49.2 35 157 22 27 25 37 27 38 4 27 22 48 27 40 54 -1.15 46 0 0 27 20 45 12 51 53.0 36 158 21 27 14 33 27 26 58 27 11 44 27 29 47 -1.15 47 0 0 27 10 15 12 51 56.9 36 159 20 27 4 3 27 16 27 27 1 15 27 19 16 -1.15 48 0 0 27 0 19 12 52 0.9 37 160 19 26 54 9 27 6 31 26 51 21 27 9 20 -1.15 49 0 0 26 50 59 12 52 4.8 37 162 18 26 44 49 26 57 10 26 42 1 26 59 59 -1.15 50 0 0 26 42 14 12 52 8.9 38 163 18 26 36 5 26 48 24 26 33 17 26 51 13 -1.15 51 0 0 26 34 4 12 52 12.9 38 164 17 26 27 55 26 40 14 26 25 8 26 43 2 -1.15 52 0 0 26 26 30 12 52 17.0 39 165 16 26 20 22 26 32 39 26 17 35 26 35 27 -1.15 53 0 0 26 19 31 12 52 21.1 39 166 15 26 13 23 26 25 40 26 10 37 26 28 27 -1.15 54 0 0 26 13 8 12 52 25.3 39 167 14 26 7 1 26 19 16 26 4 14 26 22 4 -1.15 55 0 0 26 7 21 12 52 29.4 39 168 13 26 1 14 26 13 29 25 58 28 26 16 16 -1.16 56 0 0 26 2 10 12 52 33.6 40 169 13 25 56 3 26 8 17 25 53 17 26 11 4 -1.16 57 0 0 25 57 34 12 52 37.8 40 171 12 25 51 28 26 3 42 25 48 42 26 6 28 -1.16 58 0 0 25 53 35 12 52 42.1 40 172 11 25 47 29 25 59 42 25 44 43 26 2 29 -1.16 59 0 0 25 50 12 12 52 46.3 40 173 10 25 44 6 25 56 19 25 41 21 25 59 6 -1.16 60 0 0 25 47 26 12 52 50.6 40 174 9 25 41 20 25 53 32 25 38 34 25 56 19 -1.16 61 0 0 25 45 15 12 52 54.9 41 175 8 25 39 10 25 51 21 25 36 24 25 54 8 -1.16 62 0 0 25 43 41 12 52 59.2 41 177 7 25 37 36 25 49 47 25 34 50 25 52 33 -1.16 63 0 0 25 42 43 12 53 3.4 41 178 6 25 36 38 25 48 49 25 33 52 25 51 35 -1.16 64 0 0 25 42 21 12 53 7.7 41 179 5 25 36 16 25 48 27 25 33 31 25 51 14 -1.16 65 0 0 25 42 36 12 53 12.0 41 180 5 25 36 31 25 48 42 25 33 45 25 51 29 -1.16 66 0 0 25 43 27 12 53 16.3 41 182 4 25 37 22 25 49 33 25 34 36 25 52 20 -1.16 67 0 0 25 44 55 12 53 20.6 41 183 3 25 38 49 25 51 1 25 36 4 25 53 47 -1.16 68 0 0 25 46 58 12 53 24.9 41 184 2 25 40 53 25 53 5 25 38 7 25 55 51 -1.16 69 0 0 25 49 38 12 53 29.2 40 185 1 25 43 33 25 55 45 25 40 47 25 58 31 -1.16 70 0 0 25 52 54 12 53 33.5 40 187 0 25 46 48 25 59 1 25 44 2 26 1 48 -1.16 71 0 0 25 56 47 12 53 37.7 40 188 -1 25 50 40 26 2 54 25 47 54 26 5 40 -1.16 72 0 0 26 1 15 12 53 41.9 40 189 -2 25 55 8 26 7 22 25 52 22 26 10 9 -1.16 73 0 0 26 6 19 12 53 46.2 40 190 -3 26 0 12 26 12 27 25 57 26 26 15 14 -1.16 74 0 0 26 12 0 12 53 50.3 39 191 -4 26 5 52 26 18 8 26 3 6 26 20 55 -1.16 75 0 0 26 18 16 12 53 54.5 39 192 -5 26 12 8 26 24 24 26 9 21 26 27 12 -1.16 76 0 0 26 25 8 12 53 58.7 39 194 -6 26 19 0 26 31 17 26 16 13 26 34 5 -1.16 77 0 0 26 32 36 12 54 2.8 38 195 -6 26 26 27 26 38 45 26 23 40 26 41 33 -1.16 78 0 0 26 40 39 12 54 6.9 38 196 -7 26 34 30 26 46 49 26 31 42 26 49 37 -1.16 79 0 0 26 49 18 12 54 10.9 38 197 -8 26 43 8 26 55 28 26 40 20 26 58 17 -1.16 80 0 0 26 58 32 12 54 14.9 37 198 -9 26 52 21 27 4 43 26 49 33 27 7 32 -1.16 81 0 0 27 8 21 12 54 18.9 37 199 -10 27 2 9 27 14 33 26 59 21 27 17 22 -1.16 82 0 0 27 18 44 12 54 22.9 36 200 -11 27 12 32 27 24 57 27 9 44 27 27 47 -1.16 83 0 0 27 29 43 12 54 26.7 36 201 -12 27 23 30 27 35 56 27 20 41 27 38 46 -1.16 84 0 0 27 41 16 12 54 30.6 35 202 -13 27 35 2 27 47 30 27 32 13 27 50 20 -1.16 85 0 0 27 53 23 12 54 34.4 35 203 -14 27 47 9 27 59 38 27 44 19 28 2 29 -1.16 86 0 0 28 6 4 12 54 38.1 34 204 -15 27 59 49 28 12 20 27 56 59 28 15 11 -1.16 87 0 0 28 19 19 12 54 41.8 34 205 -16 28 13 3 28 25 36 28 10 13 28 28 28 -1.16 88 0 0 28 33 9 12 54 45.5 33 206 -16 28 26 51 28 39 27 28 24 0 28 42 19 -1.16 89 0 0 28 47 31 12 54 49.1 33 207 -17 28 41 13 28 53 50 28 38 21 28 56 43 -1.16 90 0 0 29 2 27 12 54 52.6 32 208 -18 28 56 7 29 8 47 28 53 16 29 11 40 -1.16 91 0 0 29 17 55 12 54 56.1 31 209 -19 29 11 35 29 24 16 29 8 42 29 27 10 -1.16 92 0 0 29 33 56 12 54 59.5 31 210 -20 29 27 35 29 40 18 29 24 42 29 43 12 -1.16 93 0 0 29 50 29 12 55 2.8 30 211 -21 29 44 6 29 56 53 29 41 13 29 59 47 -1.16 94 0 0 30 7 34 12 55 6.0 29 211 -22 30 1 10 30 13 59 29 58 16 30 16 53 -1.16 95 0 0 30 25 10 12 55 9.2 28 212 -23 30 18 45 30 31 36 30 15 51 30 34 32 -1.16 96 0 0 30 43 17 12 55 12.4 28 213 -23 30 36 51 30 49 44 30 33 56 30 52 41 -1.16 97 0 0 31 1 55 12 55 15.4 27 214 -24 30 55 28 31 8 24 30 52 32 31 11 20 -1.16 98 0 0 31 21 3 12 55 18.4 26 215 -25 31 14 34 31 27 33 31 11 38 31 30 30 -1.16 99 0 0 31 40 41 12 55 21.3 26 216 -26 31 34 10 31 47 12 31 31 14 31 50 10 -1.16 100 0 0 32 0 47 12 55 24.1 25 216 -27 31 54 16 32 7 20 31 51 18 32 10 18 -1.16 101 0 0 32 21 23 12 55 26.8 24 217 -27 32 14 50 32 27 57 32 11 52 32 30 56 -1.16 102 0 0 32 42 27 12 55 29.4 23 218 -28 32 35 53 32 49 2 32 32 54 32 52 2 -1.16 103 0 0 33 3 59 12 55 32.0 22 219 -29 32 57 23 33 10 35 32 54 23 33 13 36 -1.17 104 0 0 33 25 57 12 55 34.4 22 219 -30 33 19 20 33 32 36 33 16 20 33 35 37 -1.17 105 0 0 33 48 23 12 55 36.8 21 220 -30 33 41 44 33 55 3 33 38 43 33 58 4 -1.17 106 0 0 34 11 14 12 55 39.1 20 221 -31 34 4 33 34 17 55 34 1 32 34 20 58 -1.17 107 0 0 34 34 30 12 55 41.3 19 221 -32 34 27 48 34 41 13 34 24 46 34 44 17 -1.17 108 0 0 34 58 12 12 55 43.4 18 222 -33 34 51 28 35 4 56 34 48 25 35 8 0 -1.17 109 0 0 35 22 17 12 55 45.4 17 223 -33 35 15 31 35 29 3 35 12 28 35 32 8 -1.17 110 0 0 35 46 45 12 55 47.3 16 223 -34 35 39 58 35 53 33 35 36 54 35 56 38 -1.17 111 0 0 36 11 36 12 55 49.1 16 224 -35 36 4 47 36 18 25 36 1 42 36 21 31 -1.17 112 0 0 36 36 48 12 55 50.8 15 225 -35 36 29 58 36 43 40 36 26 53 36 46 46 -1.17 113 0 0 37 2 22 12 55 52.4 14 225 -36 36 55 30 37 9 15 36 52 24 37 12 23 -1.17 114 0 0 37 28 16 12 55 53.9 13 226 -36 37 21 23 37 35 11 37 18 15 37 38 19 -1.17 115 0 0 37 54 30 12 55 55.3 12 227 -37 37 47 34 38 1 26 37 44 26 38 4 35 -1.17 116 0 0 38 21 2 12 55 56.6 11 227 -38 38 14 5 38 27 59 38 10 56 38 31 9 -1.17 117 0 0 38 47 51 12 55 57.8 10 228 -38 38 40 53 38 54 51 38 37 43 38 58 2 -1.18 118 0 0 39 14 58 12 55 59.0 9 229 -39 39 7 58 39 21 59 39 4 47 39 25 11 -1.18 119 0 0 39 42 20 12 56 0.0 9 229 -39 39 35 18 39 49 23 39 32 7 39 52 36 -1.18 120 0 0 40 9 58 12 56 0.9 8 230 -39 40 2 54 40 17 2 39 59 42 40 20 16 -1.18 121 0 0 40 37 49 12 56 1.7 7 231 -40 40 30 44 40 44 56 40 27 32 40 48 10 -1.19 122 0 0 41 5 54 12 56 2.4 6 231 -40 40 58 47 41 13 2 40 55 34 41 16 17 -1.19 123 0 0 41 34 11 12 56 3.0 5 232 -41 41 27 2 41 41 21 41 23 48 41 44 36 -1.20 124 0 0 42 2 39 12 56 3.5 4 233 -41 41 55 29 42 9 50 41 52 14 42 13 7 -1.21 125 0 0 42 31 17 12 56 3.9 3 233 -41 42 24 5 42 38 30 42 20 50 42 41 47 -1.23 126 0 0 43 0 4 12 56 4.2 2 234 -42 42 52 51 43 7 19 42 49 35 43 10 37 -1.25 127 0 0 43 29 0 12 56 4.4 2 235 -42 43 21 45 43 36 16 43 18 28 43 39 34 -1.31 128 0 0 43 58 2 12 56 4.5 1 236 -42 43 50 46 44 5 20 43 47 28 44 8 39 -1.51 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 332-162019 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 28 50.5960 DE: -23 39 43.577 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 28 50.5960 DE: -23 39 43.577 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.3 * B mag [mag]: 11.7 * Diameter [mas]: 0.30 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3889) Menshikov asteroid class: approx. diameter [km]: 14 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.20060 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.013", 0.002", 91.594° remarks: * orbital elements for (3889)Menshikov : Mean anomaly = 326.8314740680 deg Arg. of pericenter = 236.6855720678 deg Long. of node = 116.3405204132 deg Inclination = 3.5042509634 deg Eccentricity = 0.2170405669 Semimajor axis = 2.6758075741 AU Perihelion dist = 2.0950487814 AU Mag: H = 13.31, G = 0.15 Epoch of elements : MJD 60593.53691771 TDT (2024 Oct 10.5369) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.62,2024,10,10,12.886033,-0.003414,0.756555,13.422640,0.055157,0.005400,0.000280,0.000000,0.000000 64.6764,-23.6471,-16.57,-6.95,False UCAC4 332-162019,18.48072115,-23.6621048,11.70,10.29,9.53,0.3,0,,18.50575039,-23.6470718,7.67,7.98,0,0,0 3889,Menshikov,17.96,14.660,2.2006,0,0,3.905,0.22,,1.0,0 0,326.7106,2024,10,10,236.6856,116.3405,3.5043,0.21704,2.67581,2.09505,13.31,5.0,0.15 1.227,0.0127,0.0020,92,0.0021,Known errors,0.70,0,-1,-1 20241010_162019,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org