IOTA/IOTA-ES occultation update for (2236) Austrasia / UCAC4 565-007371 event on 2024 Aug 17, 03:44 UT Visible from Summary ------- On 2024 Aug 17 UT, the 9.45 km diameter asteroid (2236) Austrasia 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 5.58 mag to 16.78 mag (the magnitude of the asteroid) for at most 0.550 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: 86 * date and approx. time of event: 2024 Aug 17, 03:39 - 2024 Aug 17, 03:49 * geocentric midpoint of event [JD]: 2460539.65592171 * magnitude of target star: 11.21 * magnitude drop [mag]: 5.58 * estimated maximum duration [s]: 0.550 * Moon: 90 % sunlit, 128° distance * Sun: 88° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 12 * 1 sigma uncertainty interval [path widths]: +/- 0.59 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.004", 67°) * approx speed of asteroid's shadow [km/s]: 17.2694 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 565-007371 by 2236 Austrasia on 2024 Aug 17 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 - 16 0 0 -57 38 15 3 39 36.1 0 43 -37 .. .. .. -57 33 39 .. .. .. -57 28 16 .... - 15 0 0 -57 3 30 3 39 36.1 1 42 -37 -57 8 8 -56 58 53 -57 13 34 -56 53 28 0.12 - 14 0 0 -56 27 53 3 39 36.3 2 42 -37 -56 32 33 -56 23 14 -56 38 0 -56 17 48 0.42 - 13 0 0 -55 51 24 3 39 36.5 2 41 -37 -55 56 4 -55 46 43 -56 1 33 -55 41 16 0.52 - 12 0 0 -55 14 2 3 39 36.8 3 40 -37 -55 18 43 -55 9 20 -55 24 13 -55 3 52 0.57 - 11 0 0 -54 35 48 3 39 37.3 4 39 -37 -54 40 30 -54 31 5 -54 46 2 -54 25 35 0.60 - 10 0 0 -53 56 41 3 39 37.8 5 38 -37 -54 1 25 -53 51 58 -54 6 58 -53 46 27 0.62 - 9 0 0 -53 16 44 3 39 38.5 6 38 -37 -53 21 29 -53 12 0 -53 27 2 -53 6 28 0.64 - 8 0 0 -52 35 55 3 39 39.3 7 37 -36 -52 40 41 -52 31 10 -52 46 15 -52 25 38 0.65 - 7 0 0 -51 54 16 3 39 40.2 8 36 -36 -51 59 3 -51 49 31 -52 4 38 -51 43 57 0.65 - 6 0 0 -51 11 48 3 39 41.3 9 35 -36 -51 16 35 -51 7 2 -51 22 11 -51 1 28 0.66 - 5 0 0 -50 28 32 3 39 42.5 10 34 -36 -50 33 19 -50 23 45 -50 38 55 -50 18 10 0.67 - 4 0 0 -49 44 28 3 39 43.8 11 34 -35 -49 49 16 -49 39 41 -49 54 52 -49 34 6 0.67 - 3 0 0 -48 59 38 3 39 45.4 12 33 -35 -49 4 26 -48 54 51 -49 10 3 -48 49 16 0.68 - 2 0 0 -48 14 4 3 39 47.1 13 32 -35 -48 18 52 -48 9 17 -48 24 29 -48 3 41 0.68 - 1 0 0 -47 27 47 3 39 48.9 14 31 -34 -47 32 35 -47 23 0 -47 38 12 -47 17 24 0.68 0 0 0 -46 40 49 3 39 50.9 15 30 -34 -46 45 37 -46 36 2 -46 51 14 -46 30 26 0.69 1 0 0 -45 53 12 3 39 53.1 16 30 -34 -45 58 0 -45 48 25 -46 3 37 -45 42 49 0.69 2 0 0 -45 4 58 3 39 55.5 17 29 -33 -45 9 45 -45 0 11 -45 15 22 -44 54 36 0.69 3 0 0 -44 16 9 3 39 58.1 18 28 -33 -44 20 56 -44 11 22 -44 26 32 -44 5 48 0.69 4 0 0 -43 26 47 3 40 0.8 19 27 -32 -43 31 34 -43 22 1 -43 37 9 -43 16 27 0.69 5 0 0 -42 36 55 3 40 3.8 20 26 -32 -42 41 41 -42 32 10 -42 47 16 -42 26 37 0.69 6 0 0 -41 46 36 3 40 6.9 21 26 -31 -41 51 21 -41 41 51 -41 56 55 -41 36 19 0.70 7 0 0 -40 55 52 3 40 10.2 22 25 -30 -41 0 36 -40 51 8 -41 6 10 -40 45 37 0.70 8 0 0 -40 4 46 3 40 13.8 23 24 -30 -40 9 29 -40 0 3 -40 15 1 -39 54 32 0.70 9 0 0 -39 13 20 3 40 17.5 24 23 -29 -39 18 3 -39 8 38 -39 23 33 -39 3 9 0.70 10 0 0 -38 21 38 3 40 21.4 25 22 -28 -38 26 19 -38 16 57 -38 31 49 -38 11 29 0.70 11 0 0 -37 29 42 3 40 25.5 26 22 -28 -37 34 23 -37 25 3 -37 39 51 -37 19 36 0.70 12 0 0 -36 37 36 3 40 29.9 28 21 -27 -36 42 15 -36 32 58 -36 47 42 -36 27 33 0.70 13 0 0 -35 45 23 3 40 34.4 29 20 -26 -35 50 0 -35 40 45 -35 55 25 -35 35 22 0.70 14 0 0 -34 53 4 3 40 39.1 30 19 -25 -34 57 40 -34 48 28 -35 3 4 -34 43 6 0.71 15 0 0 -34 0 44 3 40 44.0 31 18 -25 -34 5 19 -33 56 10 -34 10 41 -33 50 50 0.71 16 0 0 -33 8 26 3 40 49.0 32 17 -24 -33 12 59 -33 3 53 -33 18 19 -32 58 35 0.71 17 0 0 -32 16 12 3 40 54.3 33 16 -23 -32 20 43 -32 11 41 -32 26 2 -32 6 24 0.71 18 0 0 -31 24 5 3 40 59.7 34 15 -22 -31 28 35 -31 19 35 -31 33 51 -31 14 21 0.71 19 0 0 -30 32 9 3 41 5.3 35 14 -21 -30 36 37 -30 27 41 -30 41 51 -30 22 28 0.71 20 0 0 -29 40 25 3 41 11.1 36 13 -20 -29 44 52 -29 35 59 -29 50 4 -29 30 48 0.71 21 0 0 -28 48 57 3 41 17.0 37 12 -19 -28 53 22 -28 44 33 -28 58 32 -28 39 24 0.71 22 0 0 -27 57 48 3 41 23.1 38 11 -18 -28 2 11 -27 53 25 -28 7 19 -27 48 18 0.71 23 0 0 -27 7 0 3 41 29.3 39 10 -17 -27 11 21 -27 2 39 -27 16 27 -26 57 34 0.72 24 0 0 -26 16 35 3 41 35.7 40 9 -16 -26 20 55 -26 12 16 -26 25 58 -26 7 13 0.72 25 0 0 -25 26 37 3 41 42.2 41 8 -15 -25 30 54 -25 22 19 -25 35 56 -25 17 19 0.72 26 0 0 -24 37 6 3 41 48.8 42 7 -14 -24 41 22 -24 32 51 -24 46 21 -24 27 52 0.72 27 0 0 -23 48 6 3 41 55.5 43 6 -13 -23 52 20 -23 43 53 -23 57 17 -23 38 56 0.72 28 0 0 -22 59 39 3 42 2.3 44 4 -12 -23 3 51 -22 55 27 -23 8 46 -22 50 33 0.72 29 0 0 -22 11 46 3 42 9.3 45 3 -11 -22 15 56 -22 7 36 -22 20 49 -22 2 44 0.72 30 0 0 -21 24 29 3 42 16.3 46 2 -10 -21 28 38 -21 20 21 -21 33 28 -21 15 32 0.72 31 0 0 -20 37 51 3 42 23.4 46 1 -9 -20 41 58 -20 33 45 -20 46 46 -20 28 58 0.72 32 0 0 -19 51 53 3 42 30.6 47 359 -8 -19 55 58 -19 47 49 -20 0 44 -19 43 3 0.72 33 0 0 -19 6 36 3 42 37.9 48 358 -6 -19 10 39 -19 2 33 -19 15 23 -18 57 50 0.73 34 0 0 -18 22 2 3 42 45.2 49 356 -5 -18 26 3 -18 18 1 -18 30 45 -18 13 20 0.73 35 0 0 -17 38 12 3 42 52.6 49 355 -4 -17 42 11 -17 34 13 -17 46 51 -17 29 34 0.73 36 0 0 -16 55 7 3 43 0.0 50 353 -3 -16 59 5 -16 51 10 -17 3 43 -16 46 33 0.73 37 0 0 -16 12 50 3 43 7.4 50 352 -2 -16 16 45 -16 8 54 -16 21 21 -16 4 19 0.73 38 0 0 -15 31 19 3 43 14.9 51 350 -1 -15 35 13 -15 27 26 -15 39 47 -15 22 53 0.73 39 0 0 -14 50 37 3 43 22.4 51 348 0 -14 54 29 -14 46 45 -14 59 1 -14 42 15 0.73 40 0 0 -14 10 45 3 43 29.9 52 347 1 -14 14 35 -14 6 55 -14 19 5 -14 2 26 0.73 41 0 0 -13 31 42 3 43 37.5 52 345 3 -13 35 31 -13 27 54 -13 39 59 -13 23 27 0.73 42 0 0 -12 53 31 3 43 45.0 53 343 4 -12 57 18 -12 49 44 -13 1 44 -12 45 19 0.73 43 0 0 -12 16 10 3 43 52.5 53 342 5 -12 19 56 -12 12 25 -12 24 20 -12 8 2 0.73 44 0 0 -11 39 42 3 44 0.1 53 340 6 -11 43 26 -11 35 58 -11 47 48 -11 31 37 0.74 45 0 0 -11 4 6 3 44 7.6 53 338 7 -11 7 49 -11 0 24 -11 12 9 -10 56 4 0.74 46 0 0 -10 29 23 3 44 15.1 53 336 8 -10 33 4 -10 25 42 -10 37 22 -10 21 25 0.74 47 0 0 - 9 55 33 3 44 22.5 54 335 9 - 9 59 12 - 9 51 54 -10 3 29 - 9 47 38 0.74 48 0 0 - 9 22 36 3 44 30.0 54 333 10 - 9 26 14 - 9 18 58 - 9 30 29 - 9 14 44 0.74 49 0 0 - 8 50 33 3 44 37.4 54 331 12 - 8 54 9 - 8 46 56 - 8 58 23 - 8 42 44 0.74 50 0 0 - 8 19 23 3 44 44.7 53 329 13 - 8 22 59 - 8 15 48 - 8 27 10 - 8 11 37 0.74 51 0 0 - 7 49 8 3 44 52.0 53 328 14 - 7 52 42 - 7 45 34 - 7 56 52 - 7 41 24 0.74 52 0 0 - 7 19 46 3 44 59.3 53 326 15 - 7 23 18 - 7 16 13 - 7 27 27 - 7 12 5 0.74 53 0 0 - 6 51 18 3 45 6.5 53 325 16 - 6 54 49 - 6 47 47 - 6 58 57 - 6 43 40 0.74 54 0 0 - 6 23 44 3 45 13.7 53 323 17 - 6 27 14 - 6 20 14 - 6 31 20 - 6 16 9 0.74 55 0 0 - 5 57 4 3 45 20.8 53 321 18 - 6 0 33 - 5 53 35 - 6 4 38 - 5 49 31 0.74 56 0 0 - 5 31 18 3 45 27.8 52 320 19 - 5 34 46 - 5 27 50 - 5 38 49 - 5 23 47 0.74 57 0 0 - 5 6 25 3 45 34.8 52 319 20 - 5 9 52 - 5 2 59 - 5 13 54 - 4 58 57 0.74 58 0 0 - 4 42 27 3 45 41.7 51 317 22 - 4 45 53 - 4 39 1 - 4 49 53 - 4 35 1 0.74 59 0 0 - 4 19 22 3 45 48.6 51 316 23 - 4 22 46 - 4 15 57 - 4 26 46 - 4 11 58 0.74 60 0 0 - 3 57 10 3 45 55.3 51 315 24 - 4 0 34 - 3 53 46 - 4 4 32 - 3 49 49 0.74 61 0 0 - 3 35 51 3 46 2.0 50 313 25 - 3 39 14 - 3 32 29 - 3 43 12 - 3 28 32 0.75 62 0 0 - 3 15 26 3 46 8.6 50 312 26 - 3 18 48 - 3 12 4 - 3 22 44 - 3 8 9 0.75 63 0 0 - 2 55 53 3 46 15.2 49 311 27 - 2 59 14 - 2 52 33 - 3 3 10 - 2 48 38 0.75 64 0 0 - 2 37 14 3 46 21.6 48 310 28 - 2 40 34 - 2 33 54 - 2 44 28 - 2 30 0 0.75 65 0 0 - 2 19 26 3 46 28.0 48 309 29 - 2 22 46 - 2 16 7 - 2 26 39 - 2 12 14 0.75 66 0 0 - 2 2 31 3 46 34.3 47 308 30 - 2 5 50 - 1 59 13 - 2 9 42 - 1 55 21 0.75 67 0 0 - 1 46 28 3 46 40.4 47 307 31 - 1 49 46 - 1 43 10 - 1 53 38 - 1 39 19 0.75 68 0 0 - 1 31 17 3 46 46.6 46 306 32 - 1 34 34 - 1 28 0 - 1 38 25 - 1 24 9 0.75 69 0 0 - 1 16 58 3 46 52.6 45 305 33 - 1 20 14 - 1 13 41 - 1 24 4 - 1 9 51 0.75 70 0 0 - 1 3 30 3 46 58.5 44 304 34 - 1 6 46 - 1 0 14 - 1 10 35 - 0 56 25 0.75 71 0 0 - 0 50 53 3 47 4.3 44 304 35 - 0 54 8 - 0 47 38 - 0 57 57 - 0 43 49 0.75 72 0 0 - 0 39 7 3 47 10.0 43 303 36 - 0 42 22 - 0 35 53 - 0 46 10 - 0 32 5 0.75 73 0 0 - 0 28 13 3 47 15.7 42 302 37 - 0 31 27 - 0 24 58 - 0 35 15 - 0 21 11 0.75 74 0 0 - 0 18 9 3 47 21.2 41 302 38 - 0 21 23 - 0 14 55 - 0 25 10 - 0 11 8 0.75 75 0 0 - 0 8 55 3 47 26.7 41 301 39 - 0 12 9 - 0 5 42 - 0 15 55 - 0 1 56 0.75 76 0 0 - 0 0 32 3 47 32.0 40 301 41 - 0 3 45 0 2 41 - 0 7 31 0 6 26 0.75 77 0 0 0 7 1 3 47 37.2 39 300 42 0 3 48 0 10 13 0 0 2 0 13 58 0.75 78 0 0 0 13 43 3 47 42.4 38 300 43 0 10 31 0 16 56 0 6 46 0 20 41 0.75 79 0 0 0 19 36 3 47 47.4 37 299 44 0 16 24 0 22 49 0 12 39 0 26 33 0.75 80 0 0 0 24 40 3 47 52.3 36 299 45 0 21 28 0 27 52 0 17 43 0 31 36 0.75 81 0 0 0 28 53 3 47 57.1 36 298 46 0 25 42 0 32 5 0 21 57 0 35 49 0.75 82 0 0 0 32 18 3 48 1.9 35 298 46 0 29 6 0 35 29 0 25 22 0 39 13 0.75 83 0 0 0 34 52 3 48 6.5 34 298 47 0 31 41 0 38 4 0 27 57 0 41 47 0.75 84 0 0 0 36 38 3 48 11.0 33 297 48 0 33 26 0 39 49 0 29 42 0 43 32 0.75 85 0 0 0 37 34 3 48 15.4 32 297 49 0 34 23 0 40 45 0 30 39 0 44 29 0.75 86 0 0 0 37 41 3 48 19.6 31 297 50 0 34 30 0 40 52 0 30 46 0 44 36 0.75 87 0 0 0 36 59 3 48 23.8 30 297 51 0 33 48 0 40 11 0 30 4 0 43 54 0.75 88 0 0 0 35 29 3 48 27.8 29 296 52 0 32 17 0 38 40 0 28 33 0 42 23 0.75 89 0 0 0 33 9 3 48 31.8 28 296 53 0 29 57 0 36 20 0 26 14 0 40 3 0.75 90 0 0 0 30 0 3 48 35.6 27 296 54 0 26 49 0 33 11 0 23 5 0 36 55 0.75 91 0 0 0 26 3 3 48 39.3 27 296 55 0 22 51 0 29 14 0 19 7 0 32 58 0.75 92 0 0 0 21 16 3 48 42.9 26 296 56 0 18 4 0 24 28 0 14 20 0 28 12 0.75 93 0 0 0 15 41 3 48 46.3 25 295 57 0 12 29 0 18 53 0 8 44 0 22 37 0.75 94 0 0 0 9 17 3 48 49.7 24 295 58 0 6 5 0 12 29 0 2 20 0 16 13 0.75 95 0 0 0 2 4 3 48 52.9 23 295 59 - 0 1 9 0 5 16 - 0 4 54 0 9 1 0.75 96 0 0 - 0 5 58 3 48 56.0 22 295 59 - 0 9 11 - 0 2 45 - 0 12 56 0 1 0 0.75 97 0 0 - 0 14 49 3 48 59.0 21 295 60 - 0 18 2 - 0 11 36 - 0 21 48 - 0 7 51 0.75 98 0 0 - 0 24 29 3 49 1.8 20 295 61 - 0 27 42 - 0 21 15 - 0 31 28 - 0 17 29 0.75 99 0 0 - 0 34 57 3 49 4.5 19 295 62 - 0 38 11 - 0 31 43 - 0 41 58 - 0 27 57 0.75 100 0 0 - 0 46 15 3 49 7.1 18 295 63 - 0 49 29 - 0 43 1 - 0 53 16 - 0 39 14 0.75 101 0 0 - 0 58 21 3 49 9.6 17 294 63 - 1 1 36 - 0 55 7 - 1 5 24 - 0 51 19 0.75 102 0 0 - 1 11 17 3 49 11.9 16 294 64 - 1 14 32 - 1 8 2 - 1 18 21 - 1 4 14 0.75 103 0 0 - 1 25 2 3 49 14.0 15 294 65 - 1 28 18 - 1 21 46 - 1 32 7 - 1 17 58 0.75 104 0 0 - 1 39 36 3 49 16.1 14 294 65 - 1 42 52 - 1 36 20 - 1 46 42 - 1 32 30 0.75 105 0 0 - 1 54 59 3 49 18.0 13 294 66 - 1 58 16 - 1 51 42 - 2 2 7 - 1 47 52 0.75 106 0 0 - 2 11 12 3 49 19.8 12 294 67 - 2 14 29 - 2 7 54 - 2 18 21 - 2 4 4 0.75 107 0 0 - 2 28 14 3 49 21.4 11 294 67 - 2 31 32 - 2 24 56 - 2 35 24 - 2 21 4 0.75 108 0 0 - 2 46 5 3 49 22.8 10 294 68 - 2 49 24 - 2 42 46 - 2 53 17 - 2 38 54 0.76 109 0 0 - 3 4 46 3 49 24.2 9 294 68 - 3 8 5 - 3 1 26 - 3 11 59 - 2 57 33 0.76 110 0 0 - 3 24 16 3 49 25.4 8 294 69 - 3 27 36 - 3 20 56 - 3 31 31 - 3 17 1 0.76 111 0 0 - 3 44 36 3 49 26.4 6 294 69 - 3 47 57 - 3 41 14 - 3 51 52 - 3 37 19 0.77 112 0 0 - 4 5 45 3 49 27.3 5 294 69 - 4 9 7 - 4 2 23 - 4 13 4 - 3 58 27 0.78 113 0 0 - 4 27 44 3 49 28.0 4 294 69 - 4 31 7 - 4 24 21 - 4 35 4 - 4 20 24 0.79 114 0 0 - 4 50 32 3 49 28.5 3 293 70 - 4 53 56 - 4 47 8 - 4 57 54 - 4 43 10 0.80 115 0 0 - 5 14 10 3 49 29.0 2 293 70 - 5 17 35 - 5 10 45 - 5 21 34 - 5 6 46 0.84 116 0 0 - 5 38 37 3 49 29.2 1 293 70 - 5 42 3 - 5 35 11 - 5 46 4 - 5 31 11 0.95 117 0 0 - 6 3 54 3 49 29.3 0 293 70 - 6 7 21 - 6 0 27 .. .. .. - 5 56 26 6.56 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.3 Data for the target star ------------------------ * name: UCAC4 565-007371 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 30 36.4754 DE: +22 57 14.327 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 30 36.4760 DE: +22 57 14.329 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.2 * B mag [mag]: 11.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2236) Austrasia asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.007 distance from Earth [AU]: 1.91610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.014", 0.004", 66.691° remarks: * orbital elements for (2236)Austrasia : Mean anomaly = 55.1729341768 deg Arg. of pericenter = 301.1328648101 deg Long. of node = 8.1767228905 deg Inclination = 10.1186631149 deg Eccentricity = 0.2176992120 Semimajor axis = 2.3454633127 AU Perihelion dist = 1.8348577978 AU Mag: H = 12.48, G = 0.15 Epoch of elements : MJD 60539.15592221 TDT (2024 Aug 17.1559) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,0.55,2024,8,17,3.742121,0.294565,-0.515708,8.452622,4.854231,-0.005078,-0.001243,0.000000,0.000000 30.8618,23.0383,124.89,13.27,False UCAC4 565-007371,3.51013203,22.9539796,11.64,11.21,10.98,0.0,4,,3.53418847,23.0383442,5.58,5.36,0,0,0 2236,Austrasia,16.78,9.450,1.9161,0,0,2.811,22.28,,0.8,0 0,55.1302,2024,8,17,301.1329,8.1767,10.1187,0.21770,2.34546,1.83486,12.47,5.0,0.15 1.585,0.0143,0.0037,67,0.0040,Known errors,1.04,0,-1,-1 20240817_007371,60140.25 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 06:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org