IOTA/IOTA-ES occultation update for (4360) Xuyi / UCAC4 575-023765 event on 2024 Apr 06, 05:05 UT Visible from Summary ------- On 2024 Apr 06 UT, the 12.358 km diameter asteroid (4360) Xuyi will occult a 10.9 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.27 mag to 18.19 mag (the magnitude of the asteroid) for at most 0.460 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 Apr 06, 05:01 - 2024 Apr 06, 05:09 * geocentric midpoint of event [JD]: 2460406.71239875 * magnitude of target star: 10.92 * magnitude drop [mag]: 7.27 * estimated maximum duration [s]: 0.460 * Moon: 9 % sunlit, 110° distance * Sun: 75° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.19 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 92°) * approx speed of asteroid's shadow [km/s]: 26.6799 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 575-023765 by 4360 Xuyi on 2024 Apr 6 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 83 0 0 19 37 52 5 2 3.7 1 64 65 19 33 56 19 41 49 19 32 29 19 43 16 .... 84 0 0 20 6 7 5 2 3.9 2 64 66 20 2 11 20 10 3 20 0 43 20 11 30 -0.32 85 0 0 20 34 16 5 2 4.1 3 65 66 20 30 20 20 38 13 20 28 53 20 39 40 -0.33 86 0 0 21 2 20 5 2 4.4 4 65 67 20 58 24 21 6 17 20 56 57 21 7 44 -0.33 87 0 0 21 30 18 5 2 4.7 5 65 67 21 26 22 21 34 14 21 24 55 21 35 41 -0.33 88 0 0 21 58 8 5 2 5.2 6 66 68 21 54 12 22 2 5 21 52 45 22 3 32 -0.33 89 0 0 22 25 51 5 2 5.7 7 66 68 22 21 55 22 29 47 22 20 28 22 31 14 -0.33 90 0 0 22 53 25 5 2 6.3 8 66 68 22 49 29 22 57 21 22 48 2 22 58 48 -0.33 91 0 0 23 20 50 5 2 7.0 9 67 69 23 16 54 23 24 46 23 15 27 23 26 13 -0.33 92 0 0 23 48 5 5 2 7.8 10 67 69 23 44 9 23 52 1 23 42 43 23 53 28 -0.33 93 0 0 24 15 10 5 2 8.6 11 68 69 24 11 14 24 19 5 24 9 47 24 20 32 -0.33 94 0 0 24 42 3 5 2 9.6 12 68 69 24 38 7 24 45 58 24 36 41 24 47 25 -0.33 95 0 0 25 8 44 5 2 10.6 13 69 69 25 4 49 25 12 40 25 3 22 25 14 6 -0.33 96 0 0 25 35 13 5 2 11.6 14 69 69 25 31 18 25 39 8 25 29 52 25 40 35 -0.33 97 0 0 26 1 29 5 2 12.8 15 69 69 25 57 34 26 5 24 25 56 8 26 6 51 -0.33 98 0 0 26 27 32 5 2 14.0 16 70 69 26 23 37 26 31 26 26 22 11 26 32 53 -0.33 99 0 0 26 53 20 5 2 15.2 17 70 69 26 49 25 26 57 14 26 47 59 26 58 40 -0.33 100 0 0 27 18 53 5 2 16.6 18 71 69 27 14 59 27 22 47 27 13 33 27 24 13 -0.33 101 0 0 27 44 11 5 2 18.0 19 71 69 27 40 18 27 48 5 27 38 51 27 49 31 -0.33 102 0 0 28 9 14 5 2 19.4 20 72 68 28 5 20 28 13 7 28 3 54 28 14 33 -0.33 103 0 0 28 34 0 5 2 21.0 21 72 68 28 30 7 28 37 53 28 28 41 28 39 19 -0.33 104 0 0 28 58 30 5 2 22.5 22 73 68 28 54 37 29 2 22 28 53 11 29 3 48 -0.33 105 0 0 29 22 42 5 2 24.2 23 73 67 29 18 50 29 26 34 29 17 24 29 28 0 -0.33 106 0 0 29 46 37 5 2 25.9 24 74 67 29 42 45 29 50 29 29 41 19 29 51 54 -0.33 107 0 0 30 10 14 5 2 27.6 25 75 66 30 6 22 30 14 5 30 4 57 30 15 31 -0.33 108 0 0 30 33 32 5 2 29.4 26 75 66 30 29 41 30 37 24 30 28 16 30 38 49 -0.33 109 0 0 30 56 32 5 2 31.3 27 76 65 30 52 41 31 0 23 30 51 16 31 1 48 -0.33 110 0 0 31 19 13 5 2 33.2 28 76 65 31 15 22 31 23 3 31 13 57 31 24 28 -0.33 111 0 0 31 41 34 5 2 35.2 29 77 64 31 37 44 31 45 25 31 36 19 31 46 49 -0.33 112 0 0 32 3 36 5 2 37.2 30 78 64 31 59 47 32 7 26 31 58 22 32 8 51 -0.33 113 0 0 32 25 18 5 2 39.2 31 78 63 32 21 29 32 29 7 32 20 4 32 30 32 -0.33 114 0 0 32 46 40 5 2 41.3 32 79 63 32 42 51 32 50 29 32 41 27 32 51 53 -0.33 115 0 0 33 7 41 5 2 43.4 32 80 62 33 3 53 33 11 29 33 2 28 33 12 54 -0.33 116 0 0 33 28 21 5 2 45.6 33 80 61 33 24 33 33 32 9 33 23 10 33 33 34 -0.33 117 0 0 33 48 41 5 2 47.8 34 81 61 33 44 54 33 52 29 33 43 30 33 53 53 -0.33 118 0 0 34 8 40 5 2 50.1 35 82 60 34 4 53 34 12 27 34 3 29 34 13 50 -0.33 119 0 0 34 28 17 5 2 52.3 36 82 59 34 24 30 34 32 4 34 23 7 34 33 27 -0.33 120 0 0 34 47 33 5 2 54.7 37 83 59 34 43 47 34 51 19 34 42 23 34 52 42 -0.33 121 0 0 35 6 27 5 2 57.0 38 84 58 35 2 41 35 10 13 35 1 18 35 11 36 -0.33 122 0 0 35 25 0 5 2 59.4 39 85 57 35 21 14 35 28 45 35 19 51 35 30 8 -0.33 123 0 0 35 43 10 5 3 1.8 39 85 57 35 39 25 35 46 55 35 38 3 35 48 18 -0.32 124 0 0 36 0 59 5 3 4.3 40 86 56 35 57 15 36 4 43 35 55 52 36 6 6 -0.32 125 0 0 36 18 26 5 3 6.8 41 87 55 36 14 42 36 22 10 36 13 20 36 23 32 -0.32 126 0 0 36 35 31 5 3 9.3 42 88 54 36 31 47 36 39 14 36 30 25 36 40 36 -0.32 127 0 0 36 52 13 5 3 11.8 43 89 54 36 48 30 36 55 56 36 47 8 36 57 18 -0.32 128 0 0 37 8 33 5 3 14.4 43 89 53 37 4 51 37 12 16 37 3 29 37 13 38 -0.32 129 0 0 37 24 31 5 3 16.9 44 90 52 37 20 49 37 28 13 37 19 27 37 29 35 -0.32 130 0 0 37 40 7 5 3 19.5 45 91 51 37 36 25 37 43 49 37 35 4 37 45 10 -0.32 131 0 0 37 55 20 5 3 22.2 46 92 51 37 51 39 37 59 2 37 50 18 38 0 23 -0.32 132 0 0 38 10 11 5 3 24.8 47 93 50 38 6 31 38 13 52 38 5 9 38 15 14 -0.32 133 0 0 38 24 40 5 3 27.5 47 94 49 38 21 0 38 28 20 38 19 39 38 29 42 -0.32 134 0 0 38 38 46 5 3 30.2 48 95 49 38 35 6 38 42 26 38 33 45 38 43 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43 0 17 43 7 18 42 58 59 43 8 35 -0.33 175 0 0 43 3 7 5 5 30.4 71 164 19 42 59 36 43 6 38 42 58 19 43 7 55 -0.33 176 0 0 43 2 6 5 5 33.5 71 167 18 42 58 35 43 5 36 42 57 18 43 6 54 -0.33 177 0 0 43 0 43 5 5 36.6 72 170 17 42 57 13 43 4 14 42 55 55 43 5 32 -0.33 178 0 0 42 59 0 5 5 39.7 72 173 16 42 55 29 43 2 31 42 54 12 43 3 49 -0.33 179 0 0 42 56 56 5 5 42.8 72 176 16 42 53 25 43 0 26 42 52 7 43 1 44 -0.33 -180 0 0 42 54 30 5 5 45.9 72 179 15 42 50 59 42 58 1 42 49 41 42 59 19 -0.33 -179 0 0 42 51 43 5 5 49.0 72 182 14 42 48 12 42 55 14 42 46 55 42 56 32 -0.33 -178 0 0 42 48 35 5 5 52.1 72 185 13 42 45 4 42 52 6 42 43 46 42 53 24 -0.33 -177 0 0 42 45 6 5 5 55.2 72 188 13 42 41 35 42 48 37 42 40 17 42 49 55 -0.33 -176 0 0 42 41 16 5 5 58.3 72 191 12 42 37 44 42 44 47 42 36 26 42 46 5 -0.33 -175 0 0 42 37 4 5 6 1.4 72 194 11 42 33 33 42 40 36 42 32 15 42 41 54 -0.33 -174 0 0 42 32 31 5 6 4.6 72 197 10 42 28 59 42 36 3 42 27 41 42 37 21 -0.33 -173 0 0 42 27 37 5 6 7.7 71 200 10 42 24 5 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40 40 46 9 40 55 59 -0.33 -159 0 0 40 41 6 5 6 51.9 66 235 -1 40 37 30 40 44 41 40 36 10 40 46 1 -0.33 -158 0 0 40 30 45 5 6 55.1 66 237 -2 40 27 9 40 34 21 40 25 49 40 35 41 -0.33 -157 0 0 40 20 2 5 6 58.2 65 238 -3 40 16 25 40 23 38 40 15 6 40 24 58 -0.33 -156 0 0 40 8 57 5 7 1.4 65 240 -3 40 5 20 40 12 34 40 4 0 40 13 54 -0.33 -155 0 0 39 57 29 5 7 4.6 64 242 -4 39 53 52 40 1 7 39 52 32 40 2 27 -0.33 -154 0 0 39 45 39 5 7 7.7 64 244 -5 39 42 2 39 49 17 39 40 42 39 50 37 -0.33 -153 0 0 39 33 27 5 7 10.9 63 246 -6 39 29 49 39 37 5 39 28 29 39 38 26 -0.33 -152 0 0 39 20 53 5 7 14.0 62 247 -7 39 17 14 39 24 31 39 15 54 39 25 52 -0.33 -151 0 0 39 7 56 5 7 17.2 62 249 -7 39 4 17 39 11 35 39 2 56 39 12 55 -0.33 -150 0 0 38 54 36 5 7 20.4 61 250 -8 38 50 57 38 58 16 38 49 36 38 59 37 -0.33 -149 0 0 38 40 54 5 7 23.5 60 252 -9 38 37 15 38 44 34 38 35 54 38 45 55 -0.33 -148 0 0 38 26 50 5 7 26.7 60 253 -10 38 23 10 38 30 30 38 21 49 38 31 51 -0.33 -147 0 0 38 12 23 5 7 29.8 59 255 -11 38 8 42 38 16 4 38 7 21 38 17 25 -0.33 -146 0 0 37 57 34 5 7 32.9 58 256 -12 37 53 53 38 1 15 37 52 31 38 2 36 -0.33 -145 0 0 37 42 22 5 7 36.0 58 257 -12 37 38 40 37 46 3 37 37 19 37 47 25 -0.33 -144 0 0 37 26 47 5 7 39.2 57 258 -13 37 23 5 37 30 29 37 21 43 37 31 51 -0.33 -143 0 0 37 10 50 5 7 42.3 56 260 -14 37 7 8 37 14 33 37 5 46 37 15 55 -0.33 -142 0 0 36 54 31 5 7 45.4 55 261 -15 36 50 48 36 58 14 36 49 26 36 59 36 -0.33 -141 0 0 36 37 49 5 7 48.5 55 262 -16 36 34 6 36 41 33 36 32 44 36 42 55 -0.33 -140 0 0 36 20 45 5 7 51.5 54 263 -17 36 17 1 36 24 29 36 15 39 36 25 52 -0.33 -139 0 0 36 3 19 5 7 54.6 53 264 -18 35 59 35 36 7 3 35 58 12 36 8 26 -0.33 -138 0 0 35 45 30 5 7 57.6 52 265 -18 35 41 46 35 49 15 35 40 23 35 50 38 -0.33 -137 0 0 35 27 20 5 8 0.7 51 266 -19 35 23 34 35 31 5 35 22 11 35 32 28 -0.33 -136 0 0 35 8 47 5 8 3.7 51 267 -20 35 5 1 35 12 33 35 3 38 35 13 56 -0.33 -135 0 0 34 49 52 5 8 6.7 50 268 -21 34 46 6 34 53 38 34 44 43 34 55 2 -0.33 -134 0 0 34 30 36 5 8 9.6 49 269 -22 34 26 49 34 34 23 34 25 26 34 35 46 -0.33 -133 0 0 34 10 58 5 8 12.6 48 270 -23 34 7 11 34 14 45 34 5 47 34 16 9 -0.33 -132 0 0 33 50 58 5 8 15.5 47 271 -24 33 47 11 33 54 46 33 45 47 33 56 10 -0.33 -131 0 0 33 30 38 5 8 18.4 46 272 -25 33 26 50 33 34 26 33 25 26 33 35 50 -0.33 -130 0 0 33 9 56 5 8 21.3 46 273 -26 33 6 7 33 13 44 33 4 43 33 15 8 -0.33 -129 0 0 32 48 53 5 8 24.2 45 274 -27 32 45 4 32 52 42 32 43 40 32 54 6 -0.33 -128 0 0 32 27 29 5 8 27.0 44 275 -27 32 23 40 32 31 19 32 22 16 32 32 43 -0.33 -127 0 0 32 5 45 5 8 29.8 43 276 -28 32 1 56 32 9 35 32 0 31 32 11 0 -0.33 -126 0 0 31 43 41 5 8 32.6 42 276 -29 31 39 51 31 47 31 31 38 26 31 48 56 -0.33 -125 0 0 31 21 17 5 8 35.4 41 277 -30 31 17 27 31 25 8 31 16 2 31 26 33 -0.33 -124 0 0 30 58 34 5 8 38.1 40 278 -31 30 54 43 31 2 25 30 53 18 31 3 50 -0.33 -123 0 0 30 35 31 5 8 40.7 39 279 -32 30 31 39 30 39 22 30 30 14 30 40 47 -0.33 -122 0 0 30 12 9 5 8 43.4 38 279 -33 30 8 17 30 16 1 30 6 52 30 17 26 -0.33 -121 0 0 29 48 28 5 8 46.0 38 280 -34 29 44 36 29 52 21 29 43 11 29 53 46 -0.33 -120 0 0 29 24 30 5 8 48.5 37 281 -35 29 20 37 29 28 22 29 19 12 29 29 48 -0.33 -119 0 0 29 0 14 5 8 51.0 36 281 -36 28 56 21 29 4 6 28 54 55 29 5 32 -0.33 -118 0 0 28 35 40 5 8 53.5 35 282 -37 28 31 47 28 39 33 28 30 21 28 40 59 -0.33 -117 0 0 28 10 49 5 8 55.9 34 283 -38 28 6 56 28 14 43 28 5 30 28 16 9 -0.33 -116 0 0 27 45 42 5 8 58.3 33 283 -39 27 41 48 27 49 36 27 40 22 27 51 2 -0.34 -115 0 0 27 20 19 5 9 0.6 32 284 -40 27 16 25 27 24 13 27 14 59 27 25 39 -0.34 -114 0 0 26 54 40 5 9 2.9 31 284 -41 26 50 46 26 58 35 26 49 20 27 0 1 -0.34 -113 0 0 26 28 47 5 9 5.1 30 285 -42 26 24 52 26 32 41 26 23 26 26 34 8 -0.34 -112 0 0 26 2 39 5 9 7.3 29 285 -43 25 58 44 26 6 34 25 57 17 26 8 0 -0.34 -111 0 0 25 36 17 5 9 9.4 28 286 -44 25 32 22 25 40 12 25 30 55 25 41 39 -0.34 -110 0 0 25 9 42 5 9 11.4 27 286 -45 25 5 47 25 13 38 25 4 20 25 15 4 -0.34 -109 0 0 24 42 54 5 9 13.4 26 287 -46 24 38 59 24 46 50 24 37 32 24 48 17 -0.34 -108 0 0 24 15 55 5 9 15.3 25 287 -47 24 11 59 24 19 51 24 10 32 24 21 17 -0.34 -107 0 0 23 48 44 5 9 17.2 24 288 -48 23 44 48 23 52 40 23 43 21 23 54 7 -0.34 -106 0 0 23 21 22 5 9 19.0 23 288 -49 23 17 26 23 25 18 23 15 59 23 26 45 -0.34 -105 0 0 22 53 50 5 9 20.7 22 289 -50 22 49 54 22 57 46 22 48 27 22 59 13 -0.34 -104 0 0 22 26 9 5 9 22.4 21 289 -51 22 22 13 22 30 5 22 20 46 22 31 32 -0.34 -103 0 0 21 58 19 5 9 23.9 20 290 -52 21 54 23 22 2 15 21 52 56 22 3 43 -0.34 -102 0 0 21 30 21 5 9 25.5 19 290 -53 21 26 25 21 34 18 21 24 58 21 35 45 -0.35 -101 0 0 21 2 16 5 9 26.9 18 291 -54 20 58 20 21 6 13 20 56 52 21 7 40 -0.35 -100 0 0 20 34 5 5 9 28.3 17 291 -55 20 30 8 20 38 1 20 28 41 20 39 28 -0.35 - 99 0 0 20 5 47 5 9 29.5 16 291 -56 20 1 51 20 9 44 20 0 24 20 11 11 -0.35 - 98 0 0 19 37 25 5 9 30.7 15 292 -57 19 33 29 19 41 22 19 32 1 19 42 49 -0.35 - 97 0 0 19 8 59 5 9 31.9 13 292 -57 19 5 2 19 12 55 19 3 35 19 14 23 -0.35 - 96 0 0 18 40 29 5 9 32.9 12 292 -58 18 36 33 18 44 26 18 35 5 18 45 53 -0.35 - 95 0 0 18 11 57 5 9 33.9 11 293 -59 18 8 0 18 15 53 18 6 33 18 17 20 -0.36 - 94 0 0 17 43 22 5 9 34.8 10 293 -60 17 39 26 17 47 19 17 37 59 17 48 46 -0.36 - 93 0 0 17 14 47 5 9 35.6 9 293 -61 17 10 51 17 18 43 17 9 23 17 20 10 -0.36 - 92 0 0 16 46 11 5 9 36.3 8 294 -62 16 42 15 16 50 7 16 40 48 16 51 34 -0.37 - 91 0 0 16 17 36 5 9 36.9 7 294 -63 16 13 40 16 21 32 16 12 13 16 22 59 -0.38 - 90 0 0 15 49 2 5 9 37.4 6 294 -64 15 45 6 15 52 58 15 43 39 15 54 25 -0.38 - 89 0 0 15 20 30 5 9 37.9 5 294 -65 15 16 35 15 24 26 15 15 8 15 25 53 -0.40 - 88 0 0 14 52 2 5 9 38.3 4 295 -66 14 48 6 14 55 57 14 46 39 14 57 24 -0.42 - 87 0 0 14 23 36 5 9 38.5 3 295 -67 14 19 41 14 27 32 14 18 14 14 28 59 -0.45 - 86 0 0 13 55 16 5 9 38.7 2 295 -68 13 51 21 13 59 11 13 49 54 14 0 38 -0.53 - 85 0 0 13 27 0 5 9 38.8 1 295 -68 13 23 6 13 30 55 13 21 39 13 32 22 -0.86 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: UCAC4 575-023765 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 05 41.8881 DE: +24 51 42.950 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 05 41.8880 DE: +24 51 42.950 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.9 * B mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4360) Xuyi asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.44100 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 date of fit: 2023 Feb 10 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): 0.014", 0.001", 92° remarks: * orbital elements for (4360)Xuyi : Mean anomaly = 50.8956601050 deg Arg. of pericenter = 77.1999136678 deg Long. of node = 331.0082675004 deg Inclination = 2.5041338771 deg Eccentricity = 0.1603046524 Semimajor axis = 2.5980882074 AU Perihelion dist = 2.1816025804 AU Mag: H = 13.25, G = 0.15 Epoch of elements : MJD 60406.21239850 TDT (2024 Apr 06.2124) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Feb10,0.46,2024,4,6,5.097570,0.017742,0.304843,15.033512,-0.874021,0.005409,-0.000029,0.000000,0.000000 -179.6515,24.8609,104.12,6.64,False UCAC4 575-023765,6.09496896,24.8619306,11.21,10.92,10.76,0.0,0,,6.11966050,24.8608994,7.27,6.98,0,0,0 4360,Xuyi,18.19,12.358,2.4410,0,0,3.979,-3.15,,0.8,0 0,50.8457,2024,4,6,77.1999,331.0083,2.5041,0.16030,2.59809,2.18160,13.25,5.0,0.15 1.184,0.0143,0.0012,92,0.0013,Known errors,1.28,0,-1,-1 20240406_023765,60139.28 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:37 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org