IOTA/IOTA-ES occultation update for (5176) Yoichi / UCAC4 578-020957 event on 2024 Apr 09, 10:47 UT Visible from Summary ------- On 2024 Apr 09 UT, the 17.0318562396431 km diameter asteroid (5176) Yoichi will occult a 11.2 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 6.66 mag to 17.82 mag (the magnitude of the asteroid) for at most 0.610 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 09, 10:44 - 2024 Apr 09, 10:49 * geocentric midpoint of event [JD]: 2460409.94936758 * magnitude of target star: 11.16 * magnitude drop [mag]: 6.66 * estimated maximum duration [s]: 0.610 * Moon: 1 % sunlit, 59° distance * Sun: 69° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 27 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.002", 82°) * approx speed of asteroid's shadow [km/s]: 28.2598 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 578-020957 by 5176 Yoichi on 2024 Apr 9 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 31 0 0 -46 56 18 10 44 42.8 0 51 34 -47 5 45 -46 46 52 -47 10 46 -46 41 55 .... 32 0 0 -46 22 59 10 44 42.9 1 50 35 -46 32 24 -46 13 37 -46 37 24 -46 8 41 0.54 33 0 0 -45 49 46 10 44 43.0 2 49 35 -45 59 8 -45 40 27 -46 4 6 -45 35 32 0.82 34 0 0 -45 16 39 10 44 43.3 3 49 35 -45 25 58 -45 7 22 -45 30 55 -45 2 29 0.94 35 0 0 -44 43 40 10 44 43.6 4 48 36 -44 52 56 -44 34 26 -44 57 51 -44 29 34 1.00 36 0 0 -44 10 49 10 44 44.0 5 47 36 -44 20 3 -44 1 38 -44 24 56 -43 56 48 1.04 37 0 0 -43 38 9 10 44 44.5 6 46 36 -43 47 19 -43 29 1 -43 52 11 -43 24 12 1.07 38 0 0 -43 5 40 10 44 45.1 7 46 36 -43 14 48 -42 56 35 -43 19 38 -42 51 47 1.09 39 0 0 -42 33 24 10 44 45.8 7 45 37 -42 42 29 -42 24 22 -42 47 17 -42 19 36 1.10 40 0 0 -42 1 22 10 44 46.6 8 44 37 -42 10 24 -41 52 22 -42 15 11 -41 47 38 1.12 41 0 0 -41 29 35 10 44 47.4 9 44 37 -41 38 34 -41 20 38 -41 43 20 -41 15 56 1.13 42 0 0 -40 58 5 10 44 48.4 10 43 37 -41 7 0 -40 49 11 -41 11 45 -40 44 30 1.13 43 0 0 -40 26 52 10 44 49.5 11 42 37 -40 35 45 -40 18 1 -40 40 27 -40 13 21 1.14 44 0 0 -39 55 58 10 44 50.6 12 42 37 -40 4 48 -39 47 10 -40 9 28 -39 42 31 1.15 45 0 0 -39 25 23 10 44 51.8 13 41 37 -39 34 10 -39 16 38 -39 38 50 -39 12 1 1.15 46 0 0 -38 55 10 10 44 53.2 14 40 37 -39 3 54 -38 46 27 -39 8 32 -38 41 52 1.16 47 0 0 -38 25 18 10 44 54.6 15 39 37 -38 33 59 -38 16 38 -38 38 35 -38 12 5 1.16 48 0 0 -37 55 49 10 44 56.1 16 39 37 -38 4 27 -37 47 12 -38 9 2 -37 42 40 1.16 49 0 0 -37 26 44 10 44 57.7 16 38 37 -37 35 19 -37 18 10 -37 39 53 -37 13 39 1.17 50 0 0 -36 58 3 10 44 59.3 17 37 37 -37 6 36 -36 49 32 -37 11 8 -36 45 3 1.17 51 0 0 -36 29 49 10 45 1.1 18 37 37 -36 38 19 -36 21 20 -36 42 49 -36 16 52 1.17 52 0 0 -36 2 0 10 45 2.9 19 36 36 -36 10 28 -35 53 35 -36 14 57 -35 49 8 1.18 53 0 0 -35 34 39 10 45 4.9 20 35 36 -35 43 4 -35 26 16 -35 47 32 -35 21 51 1.18 54 0 0 -35 7 46 10 45 6.9 21 34 36 -35 16 8 -34 59 26 -35 20 35 -34 55 2 1.18 55 0 0 -34 41 22 10 45 9.0 22 34 36 -34 49 42 -34 33 4 -34 54 7 -34 28 42 1.18 56 0 0 -34 15 28 10 45 11.1 22 33 35 -34 23 45 -34 7 12 -34 28 8 -34 2 51 1.18 57 0 0 -33 50 4 10 45 13.4 23 32 35 -33 58 18 -33 41 51 -34 2 40 -33 37 31 1.19 58 0 0 -33 25 10 10 45 15.7 24 31 35 -33 33 22 -33 17 0 -33 37 43 -33 12 41 1.19 59 0 0 -33 0 48 10 45 18.1 25 31 34 -33 8 58 -32 52 40 -33 13 18 -32 48 23 1.19 60 0 0 -32 36 59 10 45 20.6 25 30 34 -32 45 6 -32 28 53 -32 49 24 -32 24 37 1.19 61 0 0 -32 13 42 10 45 23.1 26 29 33 -32 21 47 -32 5 38 -32 26 4 -32 1 23 1.19 62 0 0 -31 50 58 10 45 25.7 27 28 33 -31 59 1 -31 42 57 -32 3 17 -31 38 43 1.19 63 0 0 -31 28 48 10 45 28.4 28 27 33 -31 36 49 -31 20 49 -31 41 4 -31 16 36 1.20 64 0 0 -31 7 13 10 45 31.1 28 27 32 -31 15 11 -30 59 16 -31 19 25 -30 55 4 1.20 65 0 0 -30 46 12 10 45 33.9 29 26 31 -30 54 8 -30 38 17 -30 58 21 -30 34 6 1.20 66 0 0 -30 25 46 10 45 36.8 30 25 31 -30 33 41 -30 17 53 -30 37 52 -30 13 44 1.20 67 0 0 -30 5 56 10 45 39.7 30 24 30 -30 13 49 -29 58 5 -30 17 59 -29 53 56 1.20 68 0 0 -29 46 42 10 45 42.7 31 23 30 -29 54 33 -29 38 53 -29 58 42 -29 34 45 1.20 69 0 0 -29 28 4 10 45 45.7 32 22 29 -29 35 53 -29 20 17 -29 40 1 -29 16 10 1.20 70 0 0 -29 10 3 10 45 48.8 32 21 29 -29 17 50 -29 2 17 -29 21 58 -28 58 12 1.20 71 0 0 -28 52 39 10 45 51.9 33 20 28 -29 0 24 -28 44 55 -29 4 31 -28 40 50 1.21 72 0 0 -28 35 52 10 45 55.1 33 19 27 -28 43 36 -28 28 10 -28 47 42 -28 24 6 1.21 73 0 0 -28 19 43 10 45 58.3 34 18 27 -28 27 25 -28 12 2 -28 31 30 -28 7 59 1.21 74 0 0 -28 4 12 10 46 1.5 35 17 26 -28 11 52 -27 56 32 -28 15 56 -27 52 30 1.21 75 0 0 -27 49 18 10 46 4.8 35 16 25 -27 56 58 -27 41 40 -28 1 1 -27 37 39 1.21 76 0 0 -27 35 3 10 46 8.2 35 15 24 -27 42 41 -27 27 27 -27 46 44 -27 23 26 1.21 77 0 0 -27 21 27 10 46 11.5 36 14 24 -27 29 4 -27 13 52 -27 33 6 -27 9 52 1.21 78 0 0 -27 8 29 10 46 14.9 36 13 23 -27 16 5 -27 0 55 -27 20 6 -26 56 56 1.21 79 0 0 -26 56 11 10 46 18.4 37 12 22 -27 3 45 -26 48 38 -27 7 46 -26 44 39 1.21 80 0 0 -26 44 31 10 46 21.8 37 11 21 -26 52 4 -26 36 59 -26 56 4 -26 33 1 1.21 81 0 0 -26 33 31 10 46 25.3 37 10 21 -26 41 3 -26 26 0 -26 45 2 -26 22 2 1.21 82 0 0 -26 23 10 10 46 28.8 38 9 20 -26 30 41 -26 15 40 -26 34 40 -26 11 43 1.21 83 0 0 -26 13 29 10 46 32.3 38 7 19 -26 20 59 -26 6 0 -26 24 57 -26 2 3 1.22 84 0 0 -26 4 27 10 46 35.9 38 6 18 -26 11 56 -25 56 59 -26 15 54 -25 53 3 1.22 85 0 0 -25 56 5 10 46 39.5 39 5 17 -26 3 33 -25 48 38 -26 7 31 -25 44 42 1.22 86 0 0 -25 48 23 10 46 43.0 39 4 17 -25 55 50 -25 40 56 -25 59 47 -25 37 1 1.22 87 0 0 -25 41 20 10 46 46.6 39 3 16 -25 48 47 -25 33 55 -25 52 44 -25 30 0 1.22 88 0 0 -25 34 58 10 46 50.2 39 2 15 -25 42 25 -25 27 33 -25 46 21 -25 23 38 1.22 89 0 0 -25 29 16 10 46 53.9 39 0 14 -25 36 42 -25 21 52 -25 40 38 -25 17 57 1.22 90 0 0 -25 24 14 10 46 57.5 39 359 13 -25 31 40 -25 16 50 -25 35 36 -25 12 56 1.22 91 0 0 -25 19 53 10 47 1.1 39 358 12 -25 27 18 -25 12 29 -25 31 13 -25 8 35 1.22 92 0 0 -25 16 11 10 47 4.7 39 357 11 -25 23 36 -25 8 48 -25 27 31 -25 4 54 1.22 93 0 0 -25 13 10 10 47 8.3 39 356 11 -25 20 34 -25 5 47 -25 24 30 -25 1 53 1.22 94 0 0 -25 10 49 10 47 12.0 39 355 10 -25 18 13 -25 3 26 -25 22 8 -24 59 33 1.22 95 0 0 -25 9 9 10 47 15.6 39 353 9 -25 16 33 -25 1 46 -25 20 28 -24 57 53 1.22 96 0 0 -25 8 9 10 47 19.2 39 352 8 -25 15 32 -25 0 46 -25 19 27 -24 56 53 1.22 97 0 0 -25 7 49 10 47 22.8 39 351 7 -25 15 12 -25 0 26 -25 19 7 -24 56 33 1.22 98 0 0 -25 8 9 10 47 26.4 39 350 6 -25 15 33 -25 0 47 -25 19 28 -24 56 53 1.22 99 0 0 -25 9 10 10 47 30.0 39 349 5 -25 16 34 -25 1 48 -25 20 29 -24 57 54 1.22 100 0 0 -25 10 51 10 47 33.5 38 348 4 -25 18 15 -25 3 29 -25 22 10 -24 59 35 1.22 101 0 0 -25 13 13 10 47 37.1 38 346 3 -25 20 37 -25 5 50 -25 24 32 -25 1 56 1.22 102 0 0 -25 16 14 10 47 40.6 38 345 2 -25 23 39 -25 8 51 -25 27 34 -25 4 57 1.22 103 0 0 -25 19 56 10 47 44.1 38 344 2 -25 27 21 -25 12 33 -25 31 17 -25 8 39 1.22 104 0 0 -25 24 19 10 47 47.6 37 343 1 -25 31 44 -25 16 55 -25 35 40 -25 13 0 1.22 105 0 0 -25 29 21 10 47 51.0 37 342 0 -25 36 47 -25 21 56 -25 40 43 -25 18 2 1.22 106 0 0 -25 35 3 10 47 54.4 37 341 -1 -25 42 29 -25 27 38 -25 46 26 -25 23 44 1.22 107 0 0 -25 41 26 10 47 57.8 36 340 -2 -25 48 52 -25 34 0 -25 52 49 -25 30 5 1.22 108 0 0 -25 48 28 10 48 1.2 36 339 -3 -25 55 56 -25 41 2 -25 59 53 -25 37 6 1.22 109 0 0 -25 56 10 10 48 4.5 35 338 -4 -26 3 38 -25 48 43 -26 7 36 -25 44 47 1.22 110 0 0 -26 4 32 10 48 7.8 35 337 -5 -26 12 1 -25 57 4 -26 15 59 -25 53 8 1.23 111 0 0 -26 13 33 10 48 11.0 34 336 -6 -26 21 3 -26 6 5 -26 25 1 -26 2 8 1.23 112 0 0 -26 23 14 10 48 14.3 34 335 -7 -26 30 45 -26 15 45 -26 34 44 -26 11 48 1.23 113 0 0 -26 33 34 10 48 17.4 33 334 -8 -26 41 6 -26 26 4 -26 45 6 -26 22 6 1.23 114 0 0 -26 44 34 10 48 20.5 33 333 -9 -26 52 7 -26 37 2 -26 56 7 -26 33 4 1.23 115 0 0 -26 56 13 10 48 23.6 32 332 -10 -27 3 46 -26 48 40 -27 7 47 -26 44 41 1.23 116 0 0 -27 8 30 10 48 26.6 31 331 -10 -27 16 5 -27 0 56 -27 20 6 -26 56 57 1.23 117 0 0 -27 21 26 10 48 29.6 31 330 -11 -27 29 3 -27 13 51 -27 33 4 -27 9 51 1.23 118 0 0 -27 35 1 10 48 32.5 30 330 -12 -27 42 39 -27 27 25 -27 46 41 -27 23 24 1.23 119 0 0 -27 49 14 10 48 35.4 30 329 -13 -27 56 53 -27 41 37 -28 0 57 -27 37 35 1.23 120 0 0 -28 4 6 10 48 38.2 29 328 -14 -28 11 46 -27 56 27 -28 15 50 -27 52 25 1.23 121 0 0 -28 19 35 10 48 41.0 28 327 -15 -28 27 17 -28 11 54 -28 31 22 -28 7 51 1.23 122 0 0 -28 35 42 10 48 43.6 27 326 -16 -28 43 25 -28 28 0 -28 47 31 -28 23 56 1.23 123 0 0 -28 52 26 10 48 46.3 27 326 -17 -29 0 11 -28 44 42 -29 4 17 -28 40 38 1.23 124 0 0 -29 9 47 10 48 48.8 26 325 -18 -29 17 34 -29 2 2 -29 21 41 -28 57 56 1.23 125 0 0 -29 27 45 10 48 51.3 25 324 -18 -29 35 34 -29 19 58 -29 39 42 -29 15 52 1.23 126 0 0 -29 46 20 10 48 53.8 24 323 -19 -29 54 10 -29 38 31 -29 58 19 -29 34 23 1.23 127 0 0 -30 5 30 10 48 56.1 24 323 -20 -30 13 22 -29 57 39 -30 17 32 -29 53 31 1.23 128 0 0 -30 25 16 10 48 58.4 23 322 -21 -30 33 10 -30 17 24 -30 37 21 -30 13 14 1.23 129 0 0 -30 45 38 10 49 0.6 22 321 -22 -30 53 34 -30 37 43 -30 57 46 -30 33 33 1.23 130 0 0 -31 6 34 10 49 2.7 21 320 -23 -31 14 32 -30 58 38 -31 18 45 -30 54 26 1.23 131 0 0 -31 28 5 10 49 4.8 20 320 -24 -31 36 5 -31 20 6 -31 40 19 -31 15 54 1.23 132 0 0 -31 50 10 10 49 6.8 20 319 -24 -31 58 12 -31 42 9 -32 2 28 -31 37 55 1.23 133 0 0 -32 12 48 10 49 8.7 19 318 -25 -32 20 53 -32 4 45 -32 25 9 -32 0 31 1.23 134 0 0 -32 36 0 10 49 10.5 18 318 -26 -32 44 6 -32 27 54 -32 48 24 -32 23 38 1.23 135 0 0 -32 59 43 10 49 12.2 17 317 -27 -33 7 52 -32 51 36 -33 12 12 -32 47 19 1.23 136 0 0 -33 23 59 10 49 13.9 16 316 -28 -33 32 10 -33 15 49 -33 36 31 -33 11 31 1.23 137 0 0 -33 48 46 10 49 15.5 15 316 -28 -33 57 0 -33 40 34 -34 1 22 -33 36 14 1.23 138 0 0 -34 14 4 10 49 16.9 14 315 -29 -34 22 20 -34 5 49 -34 26 43 -34 1 28 1.23 139 0 0 -34 39 52 10 49 18.3 13 314 -30 -34 48 10 -34 31 34 -34 52 35 -34 27 12 1.24 140 0 0 -35 6 9 10 49 19.6 13 314 -31 -35 14 30 -34 57 49 -35 18 56 -34 53 26 1.24 141 0 0 -35 32 55 10 49 20.8 12 313 -31 -35 41 19 -35 24 32 -35 45 46 -35 20 8 1.24 142 0 0 -36 0 8 10 49 22.0 11 313 -32 -36 8 35 -35 51 43 -36 13 3 -35 47 17 1.24 143 0 0 -36 27 49 10 49 23.0 10 312 -33 -36 36 18 -36 19 21 -36 40 48 -36 14 54 1.24 144 0 0 -36 55 56 10 49 23.9 9 311 -33 -37 4 28 -36 47 26 -37 8 59 -36 42 57 1.25 145 0 0 -37 24 29 10 49 24.8 8 311 -34 -37 33 3 -37 15 56 -37 37 36 -37 11 25 1.25 146 0 0 -37 53 26 10 49 25.5 7 310 -34 -38 2 3 -37 44 50 -38 6 38 -37 40 18 1.25 147 0 0 -38 22 46 10 49 26.2 6 309 -35 -38 31 27 -38 14 8 -38 36 3 -38 9 35 1.26 148 0 0 -38 52 30 10 49 26.7 5 309 -36 -39 1 13 -38 43 49 -39 5 51 -38 39 14 1.27 149 0 0 -39 22 35 10 49 27.2 4 308 -36 -39 31 21 -39 13 51 -39 36 0 -39 9 15 1.28 150 0 0 -39 53 1 10 49 27.6 3 308 -37 -40 1 50 -39 44 14 -40 6 31 -39 39 37 1.30 151 0 0 -40 23 47 10 49 27.9 3 307 -37 -40 32 39 -40 14 57 -40 37 21 -40 10 18 1.33 152 0 0 -40 54 52 10 49 28.1 2 306 -38 -41 3 46 -40 45 59 -41 8 30 -40 41 18 1.39 153 0 0 -41 26 13 10 49 28.2 1 306 -38 -41 35 11 -41 17 18 -41 39 56 -41 12 35 1.63 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: UCAC4 578-020957 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 55 45.6674 DE: +25 26 56.638 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 55 45.6674 DE: +25 26 56.638 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.9 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5176) Yoichi asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.84230 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 date of fit: 2023 Feb 09 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): 0.012", 0.002", 81.8° remarks: * orbital elements for (5176)Yoichi : Mean anomaly = 70.4048025641 deg Arg. of pericenter = 269.8252722150 deg Long. of node = 93.5729416033 deg Inclination = 7.7078679638 deg Eccentricity = 0.3111810506 Semimajor axis = 2.6850051084 AU Perihelion dist = 1.8494823978 AU Mag: H = 12.41, G = 0.15 Epoch of elements : MJD 60409.44936708 TDT (2024 Apr 09.4494) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Feb09,0.61,2024,4,9,10.784822,0.044374,-0.771412,15.923744,0.925076,0.005349,0.000097,-0.000001,0.000000 89.3661,25.4539,18.59,7.85,False UCAC4 578-020957,5.92935209,25.4490661,11.94,11.16,10.74,0.1,0,,5.95411589,25.4538737,6.66,6.64,0,0,0 5176,Yoichi,17.82,17.238,2.8423,0,0,3.638,2.86,,1.4,0 0,70.3041,2024,4,9,269.8253,93.5729,7.7079,0.31118,2.68501,1.84948,12.41,5.0,0.15 1.264,0.0123,0.0019,82,0.0022,Known errors,0.97,0,-1,-1 20240409_020957,60139.28 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:47 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org