IOTA/IOTA-ES occultation update for (152) Atala / UCAC4 307-269472 event on 2024 Nov 24, 23:17 UT Visible from Summary ------- On 2024 Nov 24 UT, the 59.328 km diameter asteroid (152) Atala will occult a 10.9 mag star in the constellation Microscopium for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.66 mag to 14.53 mag (the magnitude of the asteroid) for at most 2.080 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 Nov 24, 23:13 - 2024 Nov 24, 23:21 * geocentric midpoint of event [JD]: 2460639.47044058 * magnitude of target star: 10.91 * magnitude drop [mag]: 3.66 * estimated maximum duration [s]: 2.080 * Moon: 32 % sunlit, 133° distance * Sun: 66° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 63 * 1 sigma uncertainty interval [path widths]: +/- 0.18 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.003", 73°) * approx speed of asteroid's shadow [km/s]: 28.4642 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 307-269472 by 152 Atala on 2024 Nov 24 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 144 0 0 .. .. .... .. .. .. .. .. .. -40 18 11 .. .. .. -40 26 9 .. .. .. .... 145 0 0 -40 32 45 23 13 55.9 1 128 48 -40 54 36 -40 10 57 -41 2 33 -40 3 4 .... 146 0 0 -41 8 34 23 13 56.0 2 127 49 -41 30 20 -40 46 51 -41 38 14 -40 39 0 0.38 147 0 0 -41 43 41 23 13 56.2 3 127 49 -42 5 22 -41 22 4 -42 13 14 -41 14 15 0.38 148 0 0 -42 18 5 23 13 56.4 4 126 50 -42 39 41 -41 56 34 -42 47 31 -41 48 47 0.38 149 0 0 -42 51 48 23 13 56.7 5 125 51 -43 13 17 -42 30 22 -43 21 5 -42 22 38 0.38 150 0 0 -43 24 48 23 13 57.1 6 125 51 -43 46 11 -43 3 28 -43 53 57 -42 55 45 0.38 151 0 0 -43 57 5 23 13 57.5 7 124 51 -44 18 22 -43 35 51 -44 26 6 -43 28 11 0.38 152 0 0 -44 28 40 23 13 58.0 7 123 52 -44 49 51 -44 7 32 -44 57 32 -43 59 54 0.38 153 0 0 -44 59 32 23 13 58.5 8 122 52 -45 20 37 -44 38 31 -45 28 16 -44 30 55 0.38 154 0 0 -45 29 43 23 13 59.0 9 122 53 -45 50 41 -45 8 47 -45 58 18 -45 1 14 0.37 155 0 0 -45 59 11 23 13 59.6 10 121 53 -46 20 3 -45 38 22 -46 27 38 -45 30 51 0.37 156 0 0 -46 27 58 23 14 0.3 11 120 53 -46 48 44 -46 7 15 -46 56 16 -45 59 46 0.37 157 0 0 -46 56 3 23 14 1.0 12 120 54 -47 16 43 -46 35 27 -47 24 13 -46 28 0 0.37 158 0 0 -47 23 28 23 14 1.7 13 119 54 -47 44 1 -47 2 58 -47 51 29 -46 55 33 0.37 159 0 0 -47 50 12 23 14 2.4 13 118 54 -48 10 38 -47 29 48 -48 18 4 -47 22 25 0.37 160 0 0 -48 16 15 23 14 3.2 14 117 54 -48 36 36 -47 55 58 -48 43 58 -47 48 37 0.37 161 0 0 -48 41 39 23 14 4.1 15 116 55 -49 1 53 -48 21 27 -49 9 13 -48 14 9 0.37 162 0 0 -49 6 23 23 14 4.9 16 116 55 -49 26 31 -48 46 18 -49 33 49 -48 39 2 0.37 163 0 0 -49 30 28 23 14 5.8 16 115 55 -49 50 29 -49 10 29 -49 57 45 -49 3 16 0.37 164 0 0 -49 53 55 23 14 6.8 17 114 55 -50 13 50 -49 34 2 -50 21 4 -49 26 51 0.37 165 0 0 -50 16 43 23 14 7.7 18 113 55 -50 36 32 -49 56 57 -50 43 44 -49 49 48 0.37 166 0 0 -50 38 54 23 14 8.7 19 113 55 -50 58 37 -50 19 14 -51 5 47 -50 12 7 0.37 167 0 0 -51 0 29 23 14 9.7 19 112 56 -51 20 5 -50 40 54 -51 27 12 -50 33 50 0.37 168 0 0 -51 21 26 23 14 10.7 20 111 56 -51 40 57 -51 1 58 -51 48 2 -50 54 55 0.37 169 0 0 -51 41 48 23 14 11.7 21 110 56 -52 1 13 -51 22 26 -52 8 15 -51 15 25 0.37 170 0 0 -52 1 34 23 14 12.8 22 109 56 -52 20 53 -51 42 18 -52 27 54 -51 35 19 0.37 171 0 0 -52 20 45 23 14 13.9 22 108 56 -52 39 59 -52 1 35 -52 46 57 -51 54 38 0.37 172 0 0 -52 39 22 23 14 15.0 23 108 56 -52 58 30 -52 20 17 -53 5 26 -52 13 23 0.37 173 0 0 -52 57 25 23 14 16.1 24 107 56 -53 16 27 -52 38 26 -53 23 22 -52 31 33 0.37 174 0 0 -53 14 55 23 14 17.2 24 106 56 -53 33 51 -52 56 1 -53 40 44 -52 49 10 0.37 175 0 0 -53 31 52 23 14 18.4 25 105 56 -53 50 43 -53 13 3 -53 57 33 -53 6 14 0.37 176 0 0 -53 48 16 23 14 19.6 26 104 56 -54 7 2 -53 29 32 -54 13 50 -53 22 46 0.37 177 0 0 -54 4 8 23 14 20.8 26 103 56 -54 22 49 -53 45 30 -54 29 36 -53 38 45 0.37 178 0 0 -54 19 30 23 14 21.9 27 102 56 -54 38 5 -54 0 56 -54 44 50 -53 54 13 0.37 179 0 0 -54 34 20 23 14 23.2 27 102 56 -54 52 51 -54 15 51 -54 59 34 -54 9 10 0.37 -180 0 0 -54 48 40 23 14 24.4 28 101 55 -55 7 6 -54 30 16 -55 13 47 -54 23 36 0.37 -179 0 0 -55 2 29 23 14 25.6 29 100 55 -55 20 51 -54 44 10 -55 27 30 -54 37 33 0.37 -178 0 0 -55 15 50 23 14 26.9 29 99 55 -55 34 7 -54 57 35 -55 40 45 -54 50 59 0.37 -177 0 0 -55 28 41 23 14 28.1 30 98 55 -55 46 54 -55 10 31 -55 53 30 -55 3 56 0.37 -176 0 0 -55 41 4 23 14 29.4 30 97 55 -55 59 12 -55 22 58 -56 5 47 -55 16 25 0.37 -175 0 0 -55 52 58 23 14 30.7 31 96 55 -56 11 2 -55 34 56 -56 17 35 -55 28 25 0.37 -174 0 0 -56 4 25 23 14 32.0 32 95 55 -56 22 25 -55 46 27 -56 28 57 -55 39 57 0.37 -173 0 0 -56 15 24 23 14 33.3 32 94 55 -56 33 20 -55 57 30 -56 39 51 -55 51 2 0.37 -172 0 0 -56 25 56 23 14 34.6 33 93 54 -56 43 49 -56 8 6 -56 50 18 -56 1 39 0.37 -171 0 0 -56 36 2 23 14 35.9 33 93 54 -56 53 51 -56 18 15 -57 0 18 -56 11 49 0.37 -170 0 0 -56 45 41 23 14 37.2 34 92 54 -57 3 26 -56 27 58 -57 9 53 -56 21 33 0.37 -169 0 0 -56 54 54 23 14 38.6 34 91 54 -57 12 36 -56 37 15 -57 19 1 -56 30 51 0.37 -168 0 0 -57 3 42 23 14 39.9 35 90 54 -57 21 20 -56 46 5 -57 27 44 -56 39 43 0.37 -167 0 0 -57 12 4 23 14 41.3 35 89 53 -57 29 40 -56 54 31 -57 36 2 -56 48 10 0.37 -166 0 0 -57 20 1 23 14 42.7 36 88 53 -57 37 34 -57 2 31 -57 43 56 -56 56 11 0.37 -165 0 0 -57 27 34 23 14 44.0 37 87 53 -57 45 4 -57 10 6 -57 51 24 -57 3 47 0.37 -164 0 0 -57 34 42 23 14 45.4 37 86 53 -57 52 9 -57 17 17 -57 58 29 -57 10 59 0.37 -163 0 0 -57 41 26 23 14 46.8 38 85 53 -57 58 50 -57 24 3 -58 5 9 -57 17 46 0.37 -162 0 0 -57 47 45 23 14 48.2 38 84 52 -58 5 8 -57 30 25 -58 11 25 -57 24 9 0.37 -161 0 0 -57 53 41 23 14 49.7 39 83 52 -58 11 1 -57 36 23 -58 17 18 -57 30 8 0.37 -160 0 0 -57 59 14 23 14 51.1 39 82 52 -58 16 32 -57 41 58 -58 22 48 -57 35 43 0.37 -159 0 0 -58 4 23 23 14 52.5 40 81 52 -58 21 39 -57 47 9 -58 27 55 -57 40 55 0.37 -158 0 0 -58 9 9 23 14 54.0 40 80 51 -58 26 23 -57 51 57 -58 32 38 -57 45 44 0.37 -157 0 0 -58 13 32 23 14 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282 4 -37 51 56 -37 7 16 -38 0 3 -36 59 12 0.37 - 71 0 0 -36 49 3 23 18 25.2 64 280 3 -37 11 30 -36 26 40 -37 19 39 -36 18 35 0.37 - 70 0 0 -36 7 51 23 18 29.2 63 278 2 -36 30 23 -35 45 24 -36 38 34 -35 37 17 0.37 - 69 0 0 -35 25 59 23 18 33.2 63 275 1 -35 48 35 -35 3 28 -35 56 47 -34 55 19 0.37 - 68 0 0 -34 43 27 23 18 37.2 62 273 0 -35 6 7 -34 20 52 -35 14 21 -34 12 42 0.37 - 67 0 0 -34 0 17 23 18 41.3 61 271 -1 -34 23 1 -33 37 38 -34 31 16 -33 29 26 0.37 - 66 0 0 -33 16 30 23 18 45.3 60 269 -2 -33 39 17 -32 53 47 -33 47 33 -32 45 34 0.37 - 65 0 0 -32 32 6 23 18 49.4 59 268 -3 -32 54 56 -32 9 20 -33 3 13 -32 1 6 0.37 - 64 0 0 -31 47 8 23 18 53.5 59 266 -4 -32 10 1 -31 24 19 -32 18 19 -31 16 4 0.37 - 63 0 0 -31 1 36 23 18 57.6 58 264 -5 -31 24 32 -30 38 45 -31 32 51 -30 30 29 0.37 - 62 0 0 -30 15 33 23 19 1.7 57 263 -6 -30 38 31 -29 52 40 -30 46 51 -29 44 23 0.37 - 61 0 0 -29 29 0 23 19 5.7 56 261 -8 -29 51 59 -29 6 5 -30 0 20 -28 57 48 0.37 - 60 0 0 -28 41 58 23 19 9.8 55 260 -9 -29 4 59 -28 19 2 -29 13 20 -28 10 44 0.38 - 59 0 0 -27 54 30 23 19 13.8 54 259 -10 -28 17 32 -27 31 33 -28 25 54 -27 23 15 0.38 - 58 0 0 -27 6 38 23 19 17.8 53 257 -11 -27 29 41 -26 43 39 -27 38 3 -26 35 21 0.38 - 57 0 0 -26 18 23 23 19 21.8 52 256 -12 -26 41 26 -25 55 24 -26 49 48 -25 47 6 0.38 - 56 0 0 -25 29 48 23 19 25.8 51 255 -13 -25 52 51 -25 6 49 -26 1 13 -24 58 30 0.38 - 55 0 0 -24 40 54 23 19 29.7 49 254 -15 -25 3 57 -24 17 56 -25 12 19 -24 9 37 0.38 - 54 0 0 -23 51 45 23 19 33.6 48 253 -16 -24 14 47 -23 28 47 -24 23 9 -23 20 29 0.38 - 53 0 0 -23 2 21 23 19 37.4 47 252 -17 -23 25 23 -22 39 25 -23 33 44 -22 31 7 0.38 - 52 0 0 -22 12 47 23 19 41.2 46 251 -18 -22 35 46 -21 49 51 -22 44 7 -21 41 34 0.38 - 51 0 0 -21 23 3 23 19 44.9 45 250 -20 -21 46 1 -21 0 9 -21 54 21 -20 51 53 0.38 - 50 0 0 -20 33 12 23 19 48.6 44 249 -21 -20 56 8 -20 10 20 -21 4 28 -20 2 5 0.38 - 49 0 0 -19 43 17 23 19 52.2 43 249 -22 -20 6 11 -19 20 28 -20 14 29 -19 12 13 0.38 - 48 0 0 -18 53 20 23 19 55.7 41 248 -23 -19 16 11 -18 30 33 -19 24 29 -18 22 20 0.38 - 47 0 0 -18 3 23 23 19 59.1 40 247 -25 -18 26 11 -17 40 40 -18 34 28 -17 32 27 0.38 - 46 0 0 -17 13 29 23 20 2.5 39 247 -26 -17 36 14 -16 50 49 -17 44 29 -16 42 38 0.38 - 45 0 0 -16 23 41 23 20 5.8 38 246 -27 -16 46 22 -16 1 4 -16 54 36 -15 52 54 0.38 - 44 0 0 -15 33 59 23 20 9.0 36 246 -28 -15 56 36 -15 11 27 -16 4 49 -15 3 18 0.38 - 43 0 0 -14 44 28 23 20 12.1 35 245 -30 -15 7 1 -14 21 59 -15 15 12 -14 13 52 0.38 - 42 0 0 -13 55 8 23 20 15.2 34 245 -31 -14 17 37 -13 32 44 -14 25 46 -13 24 38 0.38 - 41 0 0 -13 6 3 23 20 18.1 33 244 -32 -13 28 27 -12 43 44 -13 36 34 -12 35 39 0.39 - 40 0 0 -12 17 14 23 20 20.9 32 244 -34 -12 39 33 -11 54 59 -12 47 38 -11 46 57 0.39 - 39 0 0 -11 28 43 23 20 23.6 30 243 -35 -11 50 57 -11 6 34 -11 59 1 -10 58 33 0.39 - 38 0 0 -10 40 33 23 20 26.3 29 243 -36 -11 2 41 -10 18 29 -11 10 43 -10 10 30 0.39 - 37 0 0 - 9 52 45 23 20 28.8 28 243 -37 -10 14 48 - 9 30 47 -10 22 48 - 9 22 50 0.39 - 36 0 0 - 9 5 22 23 20 31.2 27 242 -39 - 9 27 19 - 8 43 29 - 9 35 17 - 8 35 34 0.39 - 35 0 0 - 8 18 24 23 20 33.5 25 242 -40 - 8 40 15 - 7 56 37 - 8 48 11 - 7 48 44 0.39 - 34 0 0 - 7 31 54 23 20 35.7 24 242 -41 - 7 53 40 - 7 10 13 - 8 1 33 - 7 2 23 0.39 - 33 0 0 - 6 45 54 23 20 37.8 23 242 -42 - 7 7 33 - 6 24 19 - 7 15 25 - 6 16 30 0.39 - 32 0 0 - 6 0 24 23 20 39.8 22 242 -44 - 6 21 57 - 5 38 55 - 6 29 47 - 5 31 9 0.39 - 31 0 0 - 5 15 27 23 20 41.6 20 241 -45 - 5 36 54 - 4 54 4 - 5 44 41 - 4 46 20 0.39 - 30 0 0 - 4 31 3 23 20 43.4 19 241 -46 - 4 52 24 - 4 9 47 - 5 0 8 - 4 2 5 0.40 - 29 0 0 - 3 47 15 23 20 45.0 18 241 -47 - 4 8 29 - 3 26 4 - 4 16 11 - 3 18 25 0.40 - 28 0 0 - 3 4 2 23 20 46.5 17 241 -49 - 3 25 10 - 2 42 58 - 3 32 50 - 2 35 21 0.40 - 27 0 0 - 2 21 27 23 20 47.9 15 241 -50 - 2 42 28 - 2 0 29 - 2 50 5 - 1 52 55 0.40 - 26 0 0 - 1 39 30 23 20 49.2 14 241 -51 - 2 0 24 - 1 18 39 - 2 8 0 - 1 11 7 0.40 - 25 0 0 - 0 58 12 23 20 50.4 13 241 -52 - 1 19 0 - 0 37 28 - 1 26 33 - 0 29 58 0.41 - 24 0 0 - 0 17 34 23 20 51.5 12 241 -53 - 0 38 16 0 3 4 - 0 45 46 0 10 31 0.41 - 23 0 0 0 22 23 23 20 52.5 11 241 -55 0 1 48 0 42 54 - 0 5 40 0 50 19 0.41 - 22 0 0 1 1 38 23 20 53.4 9 241 -56 0 41 10 1 22 3 0 33 44 1 29 26 0.42 - 21 0 0 1 40 11 23 20 54.1 8 241 -57 1 19 50 2 0 30 1 12 26 2 7 50 0.42 - 20 0 0 2 18 2 23 20 54.8 7 241 -58 1 57 47 2 38 14 1 50 26 2 45 32 0.43 - 19 0 0 2 55 9 23 20 55.3 6 241 -59 2 35 0 3 15 15 2 27 42 3 22 31 0.44 - 18 0 0 3 31 33 23 20 55.8 5 241 -61 3 11 30 3 51 32 3 4 14 3 58 46 0.46 - 17 0 0 4 7 12 23 20 56.1 4 241 -62 3 47 16 4 27 5 3 40 2 4 34 17 0.48 - 16 0 0 4 42 7 23 20 56.3 2 241 -63 4 22 17 5 1 54 4 15 6 5 9 3 0.53 - 15 0 0 5 16 18 23 20 56.5 1 241 -64 4 56 34 5 35 59 4 49 25 5 43 6 0.68 - 14 0 0 5 49 44 23 20 56.5 0 241 -65 5 30 6 .. .. .. 5 22 59 .. .. .. 4.51 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 307-269472 * constellation : Microscopium * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 54 09.8441 DE: -28 42 32.631 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 54 09.8440 DE: -28 42 32.631 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.9 * B mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (152) Atala asteroid class: approx. diameter [km]: 59 approx. diameter ["]: 0.023 distance from Earth [AU]: 3.59280 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#64 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): 0.019", 0.003", 72.974° remarks: * orbital elements for (152)Atala : Mean anomaly = 231.8249140211 deg Arg. of pericenter = 58.9830733420 deg Long. of node = 39.8707978110 deg Inclination = 12.1235688243 deg Eccentricity = 0.0825139615 Semimajor axis = 3.1372233969 AU Perihelion dist = 2.8783586662 AU Mag: H = 8.30, G = 0.15 Epoch of elements : MJD 60638.97044054 TDT (2024 Nov 24.9704) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#642023Apr24,2.08,2024,11,24,23.290574,0.154038,-0.306251,14.353235,7.218020,0.005395,0.001086,0.000000,0.000000 -99.8469,-28.6168,-172.62,-20.79,False UCAC4 307-269472,20.90273451,-28.7090640,11.44,10.91,10.62,0.0,0,,20.92751402,-28.6168152,3.65,3.50,0,0,0 152,Atala,14.53,59.328,3.5928,0,0,2.668,17.67,,3.8,0 0,231.6528,2024,11,24,58.9831,39.8708,12.1236,0.08251,3.13722,2.87836,8.29,5.0,0.15 1.181,0.0190,0.0027,73,0.0041,Known errors,0.94,0,-1,-1 20241124_269472,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org