IOTA/IOTA-ES occultation update for (1745) Ferguson / UCAC4 565-011791 event on 2024 Apr 07, 19:27 UT Visible from Summary ------- On 2024 Apr 07 UT, the 12.1304517462866 km diameter asteroid (1745) Ferguson will occult a 11.5 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.96 mag to 17.47 mag (the magnitude of the asteroid) for at most 0.360 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: 98 * date and approx. time of event: 2024 Apr 07, 19:25 - 2024 Apr 07, 19:30 * geocentric midpoint of event [JD]: 2460408.31093992 * magnitude of target star: 11.51 * magnitude drop [mag]: 5.96 * estimated maximum duration [s]: 0.360 * Moon: 2 % sunlit, 69° distance * Sun: 55° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.36 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 80°) * approx speed of asteroid's shadow [km/s]: 34.5682 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 565-011791 by 1745 Ferguson on 2024 Apr 7 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 -159 0 0 29 16 6 19 25 24.3 1 64 40 29 11 11 29 21 2 29 7 35 29 24 39 .... -158 0 0 29 42 44 19 25 24.4 2 64 40 29 37 48 29 47 40 29 34 11 29 51 18 -0.72 -157 0 0 30 9 38 19 25 24.6 3 65 41 30 4 41 30 14 35 30 1 3 30 18 13 -0.77 -156 0 0 30 36 47 19 25 24.8 4 65 42 30 31 49 30 41 45 30 28 11 30 45 24 -0.79 -155 0 0 31 4 11 19 25 25.1 5 66 42 30 59 12 31 9 10 30 55 33 31 12 49 -0.80 -154 0 0 31 31 48 19 25 25.5 6 66 43 31 26 49 31 36 49 31 23 9 31 40 29 -0.81 -153 0 0 31 59 39 19 25 25.9 6 67 44 31 54 38 32 4 40 31 50 59 32 8 21 -0.82 -152 0 0 32 27 42 19 25 26.4 7 68 44 32 22 40 32 32 44 32 19 0 32 36 25 -0.82 -151 0 0 32 55 56 19 25 27.0 8 68 45 32 50 53 33 0 58 32 47 12 33 4 40 -0.83 -150 0 0 33 24 20 19 25 27.6 9 69 45 33 19 17 33 29 23 33 15 35 33 33 6 -0.83 -149 0 0 33 52 54 19 25 28.3 10 69 46 33 47 50 33 57 58 33 44 8 34 1 41 -0.83 -148 0 0 34 21 36 19 25 29.1 11 70 46 34 16 31 34 26 41 34 12 48 34 30 24 -0.83 -147 0 0 34 50 25 19 25 29.9 12 70 47 34 45 20 34 55 31 34 41 37 34 59 15 -0.84 -146 0 0 35 19 22 19 25 30.8 13 71 47 35 14 16 35 24 28 35 10 32 35 28 13 -0.84 -145 0 0 35 48 24 19 25 31.7 14 72 48 35 43 17 35 53 31 35 39 32 35 57 16 -0.84 -144 0 0 36 17 30 19 25 32.7 15 72 48 36 12 23 36 22 38 36 8 38 36 26 24 -0.84 -143 0 0 36 46 41 19 25 33.8 16 73 49 36 41 33 36 51 49 36 37 47 36 55 35 -0.84 -142 0 0 37 15 54 19 25 34.9 17 74 49 37 10 45 37 21 3 37 6 59 37 24 49 -0.84 -141 0 0 37 45 9 19 25 36.1 18 74 49 37 39 59 37 50 18 37 36 13 37 54 5 -0.84 -140 0 0 38 14 24 19 25 37.3 19 75 49 38 9 14 38 19 35 38 5 28 38 23 22 -0.84 -139 0 0 38 43 40 19 25 38.6 19 76 50 38 38 29 38 48 51 38 34 42 38 52 38 -0.84 -138 0 0 39 12 54 19 25 40.0 20 76 50 39 7 43 39 18 5 39 3 56 39 21 54 -0.84 -137 0 0 39 42 6 19 25 41.3 21 77 50 39 36 55 39 47 18 39 33 7 39 51 7 -0.84 -136 0 0 40 11 16 19 25 42.8 22 78 50 40 6 4 40 16 28 40 2 16 40 20 17 -0.84 -135 0 0 40 40 21 19 25 44.2 23 79 50 40 35 9 40 45 33 40 31 20 40 49 22 -0.84 -134 0 0 41 9 21 19 25 45.7 24 80 50 41 4 8 41 14 34 41 0 20 41 18 23 -0.84 -133 0 0 41 38 15 19 25 47.3 25 80 50 41 33 2 41 43 28 41 29 14 41 47 18 -0.84 -132 0 0 42 7 3 19 25 48.9 25 81 51 42 1 50 42 12 16 41 58 1 42 16 6 -0.85 -131 0 0 42 35 42 19 25 50.5 26 82 51 42 30 29 42 40 56 42 26 40 42 44 46 -0.85 -130 0 0 43 4 13 19 25 52.2 27 83 51 42 59 0 43 9 27 42 55 11 43 13 18 -0.85 -129 0 0 43 32 35 19 25 53.9 28 84 50 43 27 22 43 37 49 43 23 32 43 41 40 -0.85 -128 0 0 44 0 47 19 25 55.6 29 85 50 43 55 33 44 6 1 43 51 44 44 9 51 -0.85 -127 0 0 44 28 47 19 25 57.4 29 86 50 44 23 33 44 34 1 44 19 44 44 37 52 -0.85 -126 0 0 44 56 35 19 25 59.2 30 87 50 44 51 22 45 1 50 44 47 32 45 5 40 -0.85 -125 0 0 45 24 11 19 26 1.0 31 88 50 45 18 57 45 29 25 45 15 8 45 33 16 -0.85 -124 0 0 45 51 33 19 26 2.8 32 89 50 45 46 20 45 56 48 45 42 30 46 0 38 -0.85 -123 0 0 46 18 42 19 26 4.7 32 90 50 46 13 28 46 23 56 46 9 39 46 27 46 -0.85 -122 0 0 46 45 35 19 26 6.6 33 91 49 46 40 21 46 50 49 46 36 32 46 54 39 -0.85 -121 0 0 47 12 13 19 26 8.5 34 92 49 47 6 59 47 17 26 47 3 10 47 21 17 -0.85 -120 0 0 47 38 35 19 26 10.4 34 93 49 47 33 22 47 43 48 47 29 33 47 47 38 -0.85 -119 0 0 48 4 40 19 26 12.3 35 94 49 47 59 27 48 9 53 47 55 38 48 13 43 -0.85 -118 0 0 48 30 27 19 26 14.3 36 95 48 48 25 15 48 35 40 48 21 26 48 39 30 -0.85 -117 0 0 48 55 57 19 26 16.2 36 96 48 48 50 45 49 1 10 48 46 57 49 4 59 -0.85 -116 0 0 49 21 9 19 26 18.2 37 97 48 49 15 57 49 26 21 49 12 9 49 30 10 -0.85 -115 0 0 49 46 2 19 26 20.2 37 98 47 49 40 50 49 51 13 49 37 3 49 55 2 -0.85 -114 0 0 50 10 35 19 26 22.2 38 99 47 50 5 24 50 15 47 50 1 37 50 19 35 -0.85 -113 0 0 50 34 49 19 26 24.2 39 100 47 50 29 39 50 40 0 50 25 52 50 43 48 -0.85 -112 0 0 50 58 43 19 26 26.2 39 102 46 50 53 33 51 3 54 50 49 47 51 7 41 -0.85 -111 0 0 51 22 17 19 26 28.1 40 103 46 51 17 7 51 27 26 51 13 21 51 31 14 -0.85 -110 0 0 51 45 30 19 26 30.1 40 104 46 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14 20 19 26 55.8 46 121 40 56 9 22 56 19 20 56 5 43 56 22 59 -0.85 - 96 0 0 56 32 26 19 26 57.8 46 123 39 56 27 28 56 37 24 56 23 50 56 41 3 -0.85 - 95 0 0 56 50 9 19 26 59.7 46 124 39 56 45 12 56 55 6 56 41 34 56 58 44 -0.85 - 94 0 0 57 7 30 19 27 1.6 46 126 38 57 2 33 57 12 26 56 58 57 57 16 4 -0.85 - 93 0 0 57 24 28 19 27 3.5 47 127 38 57 19 33 57 29 24 57 15 57 57 33 1 -0.85 - 92 0 0 57 41 5 19 27 5.3 47 128 37 57 36 10 57 46 0 57 32 35 57 49 36 -0.85 - 91 0 0 57 57 20 19 27 7.2 47 130 37 57 52 26 58 2 13 57 48 51 58 5 49 -0.85 - 90 0 0 58 13 12 19 27 9.0 47 131 36 58 8 20 58 18 5 58 4 46 58 21 40 -0.85 - 89 0 0 58 28 43 19 27 10.9 48 133 36 58 23 52 58 33 35 58 20 18 58 37 10 -0.85 - 88 0 0 58 43 53 19 27 12.7 48 134 36 58 39 2 58 48 44 58 35 30 58 52 17 -0.85 - 87 0 0 58 58 41 19 27 14.5 48 136 35 58 53 51 59 3 31 58 50 19 59 7 4 -0.85 - 86 0 0 59 13 8 19 27 16.3 48 137 35 59 8 19 59 17 57 59 4 48 59 21 29 -0.85 - 85 0 0 59 27 14 19 27 18.1 48 139 34 59 22 26 59 32 2 59 18 55 59 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158 28 61 55 12 62 4 26 61 51 50 62 7 49 -0.85 - 71 0 0 62 9 18 19 27 41.7 50 159 28 62 4 43 62 13 55 62 1 21 62 17 17 -0.85 - 70 0 0 62 18 30 19 27 43.3 50 161 27 62 13 54 62 23 5 62 10 33 62 26 27 -0.85 - 69 0 0 62 27 22 19 27 44.9 50 162 27 62 22 48 62 31 57 62 19 27 62 35 19 -0.85 - 68 0 0 62 35 57 19 27 46.5 50 164 26 62 31 24 62 40 32 62 28 3 62 43 52 -0.85 - 67 0 0 62 44 15 19 27 48.0 50 165 26 62 39 42 62 48 48 62 36 22 62 52 8 -0.85 - 66 0 0 62 52 14 19 27 49.6 50 167 25 62 47 42 62 56 47 62 44 23 63 0 7 -0.85 - 65 0 0 62 59 57 19 27 51.1 50 168 25 62 55 25 63 4 28 62 52 6 63 7 48 -0.85 - 64 0 0 63 7 21 19 27 52.6 50 170 25 63 2 50 63 11 53 62 59 32 63 15 12 -0.85 - 63 0 0 63 14 29 19 27 54.2 49 171 24 63 9 59 63 19 0 63 6 41 63 22 18 -0.85 - 62 0 0 63 21 20 19 27 55.7 49 173 24 63 16 50 63 25 50 63 13 33 63 29 8 -0.85 - 61 0 0 63 27 54 19 27 57.2 49 174 23 63 23 25 63 32 24 63 20 8 63 35 41 -0.85 - 60 0 0 63 34 12 19 27 58.6 49 176 23 63 29 43 63 38 41 63 26 27 63 41 58 -0.85 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38 63 15 21 63 30 56 -0.85 - 8 59 59 63 16 22 19 29 5.9 39 242 1 63 11 52 63 20 53 63 8 34 63 24 11 -0.85 - 7 59 59 63 9 20 19 29 7.1 38 243 0 63 4 49 63 13 51 63 1 30 63 17 10 -0.85 - 6 59 59 63 2 0 19 29 8.3 38 244 0 62 57 28 63 6 32 62 54 9 63 9 51 -0.85 - 5 59 59 62 54 23 19 29 9.6 38 245 -1 62 49 51 62 58 56 62 46 31 63 2 15 -0.85 - 4 59 59 62 46 29 19 29 10.8 37 246 -1 62 41 56 62 51 2 62 38 36 62 54 22 -0.85 - 3 59 59 62 38 17 19 29 12.0 37 247 -2 62 33 43 62 42 51 62 30 23 62 46 12 -0.85 - 2 59 59 62 29 48 19 29 13.2 36 248 -2 62 25 13 62 34 23 62 21 53 62 37 44 -0.85 - 1 59 59 62 21 1 19 29 14.5 36 250 -3 62 16 26 62 25 36 62 13 4 62 28 58 -0.85 - 0 59 59 62 11 56 19 29 15.7 36 251 -3 62 7 20 62 16 32 62 3 58 62 19 54 -0.85 0 0 1 62 2 32 19 29 16.9 35 252 -4 61 57 56 62 7 9 61 54 33 62 10 32 -0.85 1 0 1 61 52 51 19 29 18.1 35 253 -4 61 48 13 61 57 28 61 44 50 62 0 52 -0.86 2 0 1 61 42 50 19 29 19.3 34 254 -5 61 38 12 61 47 29 61 34 49 61 50 53 -0.86 3 0 1 61 32 31 19 29 20.6 34 255 -5 61 27 52 61 37 11 61 24 28 61 40 36 -0.86 4 0 1 61 21 54 19 29 21.8 34 256 -6 61 17 14 61 26 34 61 13 49 61 29 59 -0.86 5 0 1 61 10 57 19 29 23.0 33 257 -6 61 6 16 61 15 38 61 2 51 61 19 4 -0.86 6 0 1 60 59 41 19 29 24.2 33 258 -7 60 54 59 61 4 22 60 51 33 61 7 49 -0.86 7 0 1 60 48 5 19 29 25.4 32 259 -7 60 43 22 60 52 48 60 39 56 60 56 15 -0.86 8 0 1 60 36 9 19 29 26.6 32 260 -8 60 31 26 60 40 53 60 27 59 60 44 21 -0.86 9 0 1 60 23 54 19 29 27.8 31 261 -8 60 19 10 60 28 39 60 15 42 60 32 8 -0.86 10 0 1 60 11 19 19 29 29.0 31 262 -9 60 6 34 60 16 5 60 3 6 60 19 34 -0.86 11 0 1 59 58 24 19 29 30.1 30 263 -9 59 53 38 60 3 10 59 50 9 60 6 40 -0.86 12 0 1 59 45 8 19 29 31.3 30 264 -10 59 40 21 59 49 56 59 36 52 59 53 26 -0.86 13 0 1 59 31 32 19 29 32.5 30 265 -10 59 26 44 59 36 20 59 23 14 59 39 52 -0.86 14 0 1 59 17 35 19 29 33.7 29 266 -11 59 12 46 59 22 24 59 9 15 59 25 56 -0.86 15 0 1 59 3 17 19 29 34.8 29 267 -12 58 58 28 59 8 7 58 54 56 59 11 40 -0.86 16 0 1 58 48 39 19 29 36.0 28 268 -12 58 43 48 58 53 29 58 40 15 58 57 3 -0.86 17 0 1 58 33 38 19 29 37.1 28 269 -13 58 28 47 58 38 30 58 25 14 58 42 4 -0.86 18 0 0 58 18 17 19 29 38.2 27 270 -13 58 13 25 58 23 10 58 9 51 58 26 45 -0.86 19 0 0 58 2 34 19 29 39.4 26 271 -14 57 57 41 58 7 28 57 54 7 58 11 3 -0.86 20 0 0 57 46 30 19 29 40.5 26 272 -14 57 41 36 57 51 25 57 38 1 57 55 1 -0.86 21 0 0 57 30 4 19 29 41.6 25 273 -15 57 25 9 57 34 59 57 21 33 57 38 36 -0.86 22 0 0 57 13 16 19 29 42.7 25 274 -16 57 8 20 57 18 13 57 4 44 57 21 50 -0.86 23 0 0 56 56 6 19 29 43.8 24 275 -16 56 51 9 57 1 4 56 47 32 57 4 42 -0.87 24 0 0 56 38 35 19 29 44.9 24 276 -17 56 33 37 56 43 33 56 29 59 56 47 12 -0.87 25 0 0 56 20 41 19 29 45.9 23 277 -17 56 15 42 56 25 40 56 12 4 56 29 19 -0.87 26 0 0 56 2 25 19 29 47.0 22 278 -18 55 57 26 56 7 25 55 53 47 56 11 5 -0.87 27 0 0 55 43 48 19 29 48.0 22 279 -19 55 38 47 55 48 48 55 35 8 55 52 29 -0.87 28 0 0 55 24 48 19 29 49.0 21 280 -19 55 19 47 55 29 49 55 16 6 55 33 31 -0.87 29 0 0 55 5 26 19 29 50.0 21 281 -20 55 0 24 55 10 28 54 56 43 55 14 10 -0.87 30 0 0 54 45 42 19 29 51.0 20 282 -20 54 40 39 54 50 45 54 36 58 54 54 28 -0.87 31 0 0 54 25 36 19 29 51.9 19 283 -21 54 20 33 54 30 40 54 16 50 54 34 23 -0.87 32 0 0 54 5 8 19 29 52.9 19 283 -22 54 0 4 54 10 13 53 56 21 54 13 57 -0.87 33 0 0 53 44 19 19 29 53.8 18 284 -22 53 39 14 53 49 24 53 35 30 53 53 8 -0.88 34 0 0 53 23 7 19 29 54.7 17 285 -23 53 18 2 53 28 14 53 14 18 53 31 58 -0.88 35 0 0 53 1 34 19 29 55.6 17 286 -24 52 56 28 53 6 41 52 52 44 53 10 27 -0.88 36 0 0 52 39 40 19 29 56.4 16 287 -24 52 34 33 52 44 48 52 30 48 52 48 33 -0.88 37 0 0 52 17 25 19 29 57.2 15 288 -25 52 12 17 52 22 33 52 8 32 52 26 19 -0.88 38 0 0 51 54 48 19 29 58.0 15 289 -26 51 49 40 51 59 57 51 45 54 52 3 44 -0.88 39 0 0 51 31 51 19 29 58.8 14 289 -26 51 26 42 51 37 1 51 22 56 51 40 48 -0.89 40 0 0 51 8 34 19 29 59.5 13 290 -27 51 3 24 51 13 44 50 59 38 51 17 31 -0.89 41 0 0 50 44 56 19 30 0.2 12 291 -28 50 39 46 50 50 6 50 35 59 50 53 54 -0.89 42 0 0 50 20 58 19 30 0.9 12 292 -28 50 15 48 50 26 9 50 12 1 50 29 58 -0.89 43 0 0 49 56 42 19 30 1.6 11 293 -29 49 51 31 50 1 53 49 47 43 50 5 41 -0.90 44 0 0 49 32 6 19 30 2.2 10 293 -30 49 26 54 49 37 18 49 23 6 49 41 6 -0.90 45 0 0 49 7 11 19 30 2.7 9 294 -30 49 1 59 49 12 23 48 58 11 49 16 12 -0.91 46 0 0 48 41 59 19 30 3.2 9 295 -31 48 36 46 48 47 11 48 32 58 48 51 0 -0.91 47 0 0 48 16 28 19 30 3.7 8 296 -32 48 11 16 48 21 41 48 7 27 48 25 31 -0.92 48 0 0 47 50 41 19 30 4.2 7 296 -32 47 45 28 47 55 54 47 41 39 47 59 44 -0.93 49 0 0 47 24 37 19 30 4.6 6 297 -33 47 19 24 47 29 50 47 15 35 47 33 40 -0.94 50 0 0 46 58 17 19 30 4.9 5 298 -34 46 53 4 47 3 30 46 49 15 47 7 20 -0.95 51 0 0 46 31 41 19 30 5.2 5 299 -34 46 26 28 46 36 55 46 22 39 46 40 45 -0.97 52 0 0 46 4 51 19 30 5.5 4 299 -35 45 59 38 46 10 5 45 55 48 46 13 55 -1.00 53 0 0 45 37 47 19 30 5.7 3 300 -36 45 32 33 45 43 0 45 28 44 45 46 51 -1.04 54 0 0 45 10 29 19 30 5.9 2 301 -36 45 5 15 45 15 43 45 1 26 45 19 33 -1.12 55 0 0 44 42 58 19 30 6.0 1 302 -37 44 37 45 44 48 12 44 33 56 44 52 2 -1.28 56 0 0 44 15 16 19 30 6.1 0 302 -38 44 10 3 44 20 30 44 6 14 44 24 20 -2.04 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: UCAC4 565-011791 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 45 21.5775 DE: +22 54 27.901 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 45 21.5774 DE: +22 54 27.901 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.5 * B mag [mag]: 12.4 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1745) Ferguson asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.005 distance from Earth [AU]: 3.16500 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 date of fit: 2023 Feb 11 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): 0.011", 0.002", 80.4° remarks: * orbital elements for (1745)Ferguson : Mean anomaly = 32.8122235261 deg Arg. of pericenter = 335.2875705894 deg Long. of node = 78.5672950492 deg Inclination = 3.2575437493 deg Eccentricity = 0.0568539322 Semimajor axis = 2.8459901750 AU Perihelion dist = 2.6841844425 AU Mag: H = 11.88, G = 0.15 Epoch of elements : MJD 60407.81093937 TDT (2024 Apr 07.8109) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Feb11,0.36,2024,4,7,19.462558,-0.096454,0.636647,19.293528,2.906666,0.004655,0.000621,-0.000001,0.000000 -56.7972,22.9525,-111.46,7.24,False UCAC4 565-011791,4.75599379,22.9077505,12.41,11.51,11.02,0.1,0,,4.77997660,22.9524977,5.96,6.00,0,0,0 1745,Ferguson,17.47,12.360,3.1650,0,0,3.881,8.07,,1.2,0 0,32.6458,2024,4,7,335.2876,78.5673,3.2575,0.05685,2.84599,2.68418,11.88,5.0,0.15 1.366,0.0110,0.0020,80,0.0020,Known errors,1.10,0,-1,-1 20240407_011791,60139.28 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org