IOTA/IOTA-ES occultation update for (909) Ulla / UCAC4 486-023628 event on 2024 Sep 09, 02:01 UT Visible from Summary ------- On 2024 Sep 09 UT, the 116.424440738317 km diameter asteroid (909) Ulla will occult a 10.8 mag star in the constellation Monoceros for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.32 mag to 15.07 mag (the magnitude of the asteroid) for at most 4.650 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 Sep 09, 01:58 - 2024 Sep 09, 02:04 * geocentric midpoint of event [JD]: 2460562.58451846 * magnitude of target star: 10.77 * magnitude drop [mag]: 4.32 * estimated maximum duration [s]: 4.650 * Moon: 29 % sunlit, 131° distance * Sun: 70° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 182 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.001", 79°) * approx speed of asteroid's shadow [km/s]: 25.5451 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 486-023628 by 909 Ulla on 2024 Sep 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 - 5 0 0 -36 31 12 1 59 0.2 1 81 -51 -37 21 41 -35 41 35 -37 38 35 -35 25 20 .... - 4 0 0 -36 24 7 1 59 0.3 1 80 -51 -37 14 33 -35 34 32 -37 31 26 -35 18 18 0.79 - 3 0 0 -36 17 19 1 59 0.5 2 80 -50 -37 7 44 -35 27 47 -37 24 36 -35 11 34 0.93 - 2 0 0 -36 10 50 1 59 0.7 3 79 -50 -37 1 12 -35 21 20 -37 18 4 -35 5 8 0.99 - 1 0 0 -36 4 40 1 59 1.1 4 78 -49 -36 54 59 -35 15 11 -37 11 50 -34 59 0 1.03 0 0 0 -35 58 48 1 59 1.5 5 78 -48 -36 49 5 -35 9 22 -37 5 55 -34 53 11 1.05 1 0 0 -35 53 15 1 59 2.0 6 77 -48 -36 43 30 -35 3 50 -37 0 19 -34 47 40 1.07 2 0 0 -35 48 0 1 59 2.5 6 77 -47 -36 38 14 -34 58 38 -36 55 2 -34 42 28 1.08 3 0 0 -35 43 5 1 59 3.2 7 76 -47 -36 33 16 -34 53 44 -36 50 4 -34 37 35 1.09 4 0 0 -35 38 29 1 59 3.9 8 75 -46 -36 28 39 -34 49 9 -36 45 26 -34 33 1 1.10 5 0 0 -35 34 12 1 59 4.7 9 75 -45 -36 24 20 -34 44 54 -36 41 7 -34 28 46 1.11 6 0 0 -35 30 14 1 59 5.6 10 74 -45 -36 20 21 -34 40 58 -36 37 8 -34 24 50 1.11 7 0 0 -35 26 37 1 59 6.5 10 74 -44 -36 16 42 -34 37 21 -36 33 28 -34 21 14 1.12 8 0 0 -35 23 18 1 59 7.6 11 73 -44 -36 13 23 -34 34 4 -36 30 8 -34 17 57 1.12 9 0 0 -35 20 20 1 59 8.7 12 72 -43 -36 10 23 -34 31 6 -36 27 9 -34 15 0 1.13 10 0 0 -35 17 41 1 59 9.9 13 72 -42 -36 7 44 -34 28 28 -36 24 29 -34 12 22 1.13 11 0 0 -35 15 22 1 59 11.1 14 71 -41 -36 5 24 -34 26 10 -36 22 9 -34 10 4 1.13 12 0 0 -35 13 23 1 59 12.5 14 70 -41 -36 3 25 -34 24 12 -36 20 9 -34 8 6 1.14 13 0 0 -35 11 44 1 59 13.9 15 70 -40 -36 1 45 -34 22 34 -36 18 30 -34 6 28 1.14 14 0 0 -35 10 26 1 59 15.3 16 69 -39 -36 0 26 -34 21 15 -36 17 11 -34 5 10 1.14 15 0 0 -35 9 27 1 59 16.9 17 69 -39 -35 59 27 -34 20 17 -36 16 12 -34 4 11 1.14 16 0 0 -35 8 49 1 59 18.5 17 68 -38 -35 58 49 -34 19 38 -36 15 33 -34 3 33 1.14 17 0 0 -35 8 30 1 59 20.2 18 67 -37 -35 58 31 -34 19 20 -36 15 15 -34 3 14 1.15 18 0 0 -35 8 32 1 59 22.0 19 67 -36 -35 58 33 -34 19 22 -36 15 17 -34 3 16 1.15 19 0 0 -35 8 54 1 59 23.8 20 66 -36 -35 58 56 -34 19 43 -36 15 40 -34 3 38 1.15 20 0 0 -35 9 37 1 59 25.7 20 65 -35 -35 59 38 -34 20 25 -36 16 23 -34 4 20 1.15 21 0 0 -35 10 40 1 59 27.7 21 64 -34 -36 0 42 -34 21 28 -36 17 27 -34 5 21 1.15 22 0 0 -35 12 3 1 59 29.7 22 64 -33 -36 2 6 -34 22 50 -36 18 51 -34 6 44 1.15 23 0 0 -35 13 46 1 59 31.8 23 63 -32 -36 3 50 -34 24 32 -36 20 35 -34 8 26 1.15 24 0 0 -35 15 49 1 59 34.0 23 62 -32 -36 5 54 -34 26 35 -36 22 40 -34 10 28 1.15 25 0 0 -35 18 13 1 59 36.2 24 61 -31 -36 8 19 -34 28 57 -36 25 5 -34 12 50 1.16 26 0 0 -35 20 57 1 59 38.5 25 61 -30 -36 11 4 -34 31 40 -36 27 51 -34 15 32 1.16 27 0 0 -35 24 1 1 59 40.9 25 60 -29 -36 14 9 -34 34 42 -36 30 56 -34 18 34 1.16 28 0 0 -35 27 24 1 59 43.3 26 59 -28 -36 17 35 -34 38 5 -36 34 22 -34 21 56 1.16 29 0 0 -35 31 8 1 59 45.8 27 58 -28 -36 21 20 -34 41 47 -36 38 8 -34 25 38 1.16 30 0 0 -35 35 12 1 59 48.3 28 57 -27 -36 25 26 -34 45 49 -36 42 15 -34 29 39 1.16 31 0 0 -35 39 36 1 59 50.9 28 56 -26 -36 29 51 -34 50 11 -36 46 41 -34 34 0 1.16 32 0 0 -35 44 19 1 59 53.5 29 56 -25 -36 34 37 -34 54 52 -36 51 27 -34 38 41 1.16 33 0 0 -35 49 22 1 59 56.2 29 55 -24 -36 39 42 -34 59 53 -36 56 33 -34 43 41 1.16 34 0 0 -35 54 44 1 59 59.0 30 54 -23 -36 45 7 -35 5 13 -37 1 58 -34 49 1 1.16 35 0 0 -36 0 26 2 0 1.8 31 53 -23 -36 50 51 -35 10 52 -37 7 43 -34 54 39 1.16 36 0 0 -36 6 27 2 0 4.6 31 52 -22 -36 56 55 -35 16 51 -37 13 48 -35 0 37 1.16 37 0 0 -36 12 47 2 0 7.5 32 51 -21 -37 3 17 -35 23 9 -37 20 12 -35 6 54 1.16 38 0 0 -36 19 27 2 0 10.5 32 50 -20 -37 9 59 -35 29 45 -37 26 55 -35 13 30 1.16 39 0 0 -36 26 25 2 0 13.4 33 49 -19 -37 17 0 -35 36 41 -37 33 57 -35 20 25 1.16 40 0 0 -36 33 41 2 0 16.5 33 48 -19 -37 24 20 -35 43 55 -37 41 17 -35 27 38 1.17 41 0 0 -36 41 17 2 0 19.5 34 47 -18 -37 31 58 -35 51 27 -37 48 57 -35 35 9 1.17 42 0 0 -36 49 10 2 0 22.6 34 46 -17 -37 39 55 -35 59 17 -37 56 55 -35 42 58 1.17 43 0 0 -36 57 22 2 0 25.8 35 45 -16 -37 48 10 -36 7 26 -38 5 11 -35 51 6 1.17 44 0 0 -37 5 52 2 0 29.0 35 44 -15 -37 56 43 -36 15 52 -38 13 45 -35 59 31 1.17 45 0 0 -37 14 39 2 0 32.2 36 43 -14 -38 5 34 -36 24 37 -38 22 37 -36 8 14 1.17 46 0 0 -37 23 44 2 0 35.4 36 42 -14 -38 14 43 -36 33 38 -38 31 47 -36 17 15 1.17 47 0 0 -37 33 6 2 0 38.7 37 40 -13 -38 24 9 -36 42 57 -38 41 14 -36 26 33 1.17 48 0 0 -37 42 46 2 0 42.0 37 39 -12 -38 33 52 -36 52 33 -38 50 59 -36 36 7 1.17 49 0 0 -37 52 42 2 0 45.3 37 38 -11 -38 43 52 -37 2 25 -39 1 0 -36 45 59 1.17 50 0 0 -38 2 55 2 0 48.7 38 37 -10 -38 54 9 -37 12 34 -39 11 18 -36 56 7 1.17 51 0 0 -38 13 24 2 0 52.1 38 36 -10 -39 4 42 -37 23 0 -39 21 53 -37 6 31 1.17 52 0 0 -38 24 9 2 0 55.4 38 34 -9 -39 15 31 -37 33 41 -39 32 43 -37 17 11 1.17 53 0 0 -38 35 10 2 0 58.9 39 33 -8 -39 26 36 -37 44 38 -39 43 50 -37 28 7 1.17 54 0 0 -38 46 27 2 1 2.3 39 32 -7 -39 37 57 -37 55 51 -39 55 12 -37 39 18 1.17 55 0 0 -38 57 58 2 1 5.7 39 31 -6 -39 49 33 -38 7 19 -40 6 49 -37 50 45 1.17 56 0 0 -39 9 45 2 1 9.2 39 29 -6 -40 1 24 -38 19 1 -40 18 41 -38 2 26 1.17 57 0 0 -39 21 46 2 1 12.7 40 28 -5 -40 13 29 -38 30 58 -40 30 48 -38 14 22 1.17 58 0 0 -39 34 2 2 1 16.2 40 27 -4 -40 25 49 -38 43 10 -40 43 10 -38 26 32 1.17 59 0 0 -39 46 31 2 1 19.6 40 26 -3 -40 38 23 -38 55 35 -40 55 45 -38 38 56 1.17 60 0 0 -39 59 14 2 1 23.1 40 24 -3 -40 51 10 -39 8 14 -41 8 34 -38 51 33 1.17 61 0 0 -40 12 10 2 1 26.6 40 23 -2 -41 4 10 -39 21 6 -41 21 36 -39 4 24 1.17 62 0 0 -40 25 19 2 1 30.1 40 22 -1 -41 17 24 -39 34 11 -41 34 51 -39 17 27 1.17 63 0 0 -40 38 41 2 1 33.6 40 20 0 -41 30 50 -39 47 28 -41 48 18 -39 30 43 1.17 64 0 0 -40 52 14 2 1 37.1 40 19 0 -41 44 28 -40 0 58 -42 1 58 -39 44 12 1.17 65 0 0 -41 6 0 2 1 40.6 40 17 1 -41 58 18 -40 14 39 -42 15 49 -39 57 52 1.17 66 0 0 -41 19 57 2 1 44.1 40 16 2 -42 12 19 -40 28 32 -42 29 52 -40 11 43 1.17 67 0 0 -41 34 5 2 1 47.5 40 15 3 -42 26 32 -40 42 35 -42 44 6 -40 25 45 1.17 68 0 0 -41 48 23 2 1 51.0 40 13 3 -42 40 55 -40 56 50 -42 58 31 -40 39 59 1.17 69 0 0 -42 2 52 2 1 54.5 40 12 4 -42 55 28 -41 11 15 -43 13 5 -40 54 22 1.17 70 0 0 -42 17 31 2 1 57.9 40 11 5 -43 10 11 -41 25 49 -43 27 50 -41 8 55 1.17 71 0 0 -42 32 19 2 2 1.3 40 9 5 -43 25 3 -41 40 33 -43 42 44 -41 23 38 1.17 72 0 0 -42 47 16 2 2 4.7 40 8 6 -43 40 5 -41 55 26 -43 57 47 -41 38 30 1.17 73 0 0 -43 2 22 2 2 8.1 40 7 7 -43 55 14 -42 10 28 -44 12 58 -41 53 30 1.17 74 0 0 -43 17 35 2 2 11.5 40 5 7 -44 10 32 -42 25 38 -44 28 17 -42 8 39 1.17 75 0 0 -43 32 57 2 2 14.8 39 4 8 -44 25 58 -42 40 55 -44 43 44 -42 23 55 1.17 76 0 0 -43 48 26 2 2 18.1 39 3 9 -44 41 31 -42 56 20 -44 59 18 -42 39 19 1.17 77 0 0 -44 4 1 2 2 21.4 39 1 9 -44 57 10 -43 11 52 -45 14 59 -42 54 50 1.17 78 0 0 -44 19 43 2 2 24.7 39 0 10 -45 12 56 -43 27 31 -45 30 46 -43 10 27 1.17 79 0 0 -44 35 31 2 2 27.9 38 359 11 -45 28 48 -43 43 15 -45 46 40 -43 26 10 1.17 80 0 0 -44 51 25 2 2 31.1 38 358 11 -45 44 45 -43 59 5 -46 2 38 -43 41 59 1.17 81 0 0 -45 7 23 2 2 34.3 38 356 12 -46 0 47 -44 15 0 -46 18 41 -43 57 53 1.17 82 0 0 -45 23 27 2 2 37.4 38 355 12 -46 16 54 -44 31 0 -46 34 49 -44 13 52 1.17 83 0 0 -45 39 34 2 2 40.5 37 354 13 -46 33 5 -44 47 4 -46 51 1 -44 29 55 1.17 84 0 0 -45 55 45 2 2 43.6 37 353 13 -46 49 19 -45 3 13 -47 7 17 -44 46 2 1.17 85 0 0 -46 12 0 2 2 46.6 37 351 14 -47 5 37 -45 19 24 -47 23 36 -45 2 13 1.17 86 0 0 -46 28 17 2 2 49.6 36 350 15 -47 21 57 -45 35 38 -47 39 57 -45 18 26 1.17 87 0 0 -46 44 37 2 2 52.5 36 349 15 -47 38 20 -45 51 55 -47 56 21 -45 34 42 1.17 88 0 0 -47 0 58 2 2 55.4 35 348 16 -47 54 44 -46 8 14 -48 12 46 -45 51 1 1.17 89 0 0 -47 17 21 2 2 58.3 35 347 16 -48 11 10 -46 24 35 -48 29 13 -46 7 20 1.17 90 0 0 -47 33 46 2 3 1.1 34 345 17 -48 27 37 -46 40 57 -48 45 40 -46 23 42 1.17 91 0 0 -47 50 10 2 3 3.9 34 344 17 -48 44 4 -46 57 19 -49 2 8 -46 40 3 1.17 92 0 0 -48 6 35 2 3 6.6 34 343 17 -49 0 31 -47 13 42 -49 18 36 -46 56 26 1.17 93 0 0 -48 23 0 2 3 9.3 33 342 18 -49 16 58 -47 30 5 -49 35 4 -47 12 48 1.17 94 0 0 -48 39 24 2 3 11.9 33 341 18 -49 33 24 -47 46 28 -49 51 30 -47 29 10 1.17 95 0 0 -48 55 47 2 3 14.5 32 340 19 -49 49 49 -48 2 49 -50 7 56 -47 45 31 1.17 96 0 0 -49 12 9 2 3 17.1 32 339 19 -50 6 12 -48 19 9 -50 24 19 -48 1 50 1.17 97 0 0 -49 28 29 2 3 19.6 31 338 20 -50 22 33 -48 35 28 -50 40 41 -48 18 8 1.17 98 0 0 -49 44 46 2 3 22.0 31 337 20 -50 38 52 -48 51 44 -50 57 0 -48 34 24 1.17 99 0 0 -50 1 1 2 3 24.4 30 335 20 -50 55 7 -49 7 57 -51 13 16 -48 50 38 1.17 100 0 0 -50 17 12 2 3 26.8 30 334 21 -51 11 20 -49 24 8 -51 29 29 -49 6 48 1.17 101 0 0 -50 33 20 2 3 29.1 29 333 21 -51 27 29 -49 40 16 -51 45 38 -49 22 55 1.18 102 0 0 -50 49 25 2 3 31.3 29 332 21 -51 43 34 -49 56 19 -52 1 43 -49 38 59 1.18 103 0 0 -51 5 25 2 3 33.5 28 331 22 -51 59 34 -50 12 19 -52 17 44 -49 54 59 1.18 104 0 0 -51 21 20 2 3 35.7 28 330 22 -52 15 30 -50 28 15 -52 33 40 -50 10 54 1.18 105 0 0 -51 37 11 2 3 37.8 27 329 22 -52 31 21 -50 44 5 -52 49 30 -50 26 44 1.18 106 0 0 -51 52 56 2 3 39.8 26 328 23 -52 47 6 -50 59 51 -53 5 16 -50 42 30 1.18 107 0 0 -52 8 36 2 3 41.8 26 327 23 -53 2 45 -51 15 31 -53 20 55 -50 58 10 1.18 108 0 0 -52 24 10 2 3 43.8 25 326 23 -53 18 19 -51 31 5 -53 36 28 -51 13 45 1.18 109 0 0 -52 39 38 2 3 45.7 25 325 23 -53 33 46 -51 46 33 -53 51 55 -51 29 13 1.18 110 0 0 -52 54 59 2 3 47.5 24 324 24 -53 49 6 -52 1 55 -54 7 15 -51 44 35 1.18 111 0 0 -53 10 13 2 3 49.3 24 323 24 -54 4 19 -52 17 10 -54 22 28 -51 59 51 1.18 112 0 0 -53 25 20 2 3 51.0 23 323 24 -54 19 25 -52 32 19 -54 37 33 -52 14 59 1.18 113 0 0 -53 40 20 2 3 52.7 23 322 24 -54 34 23 -52 47 20 -54 52 31 -52 30 1 1.18 114 0 0 -53 55 12 2 3 54.4 22 321 24 -54 49 14 -53 2 13 -55 7 21 -52 44 55 1.18 115 0 0 -54 9 56 2 3 56.0 21 320 25 -55 3 56 -53 16 59 -55 22 3 -52 59 41 1.18 116 0 0 -54 24 32 2 3 57.5 21 319 25 -55 18 30 -53 31 36 -55 36 36 -53 14 19 1.18 117 0 0 -54 38 59 2 3 59.0 20 318 25 -55 32 56 -53 46 6 -55 51 1 -53 28 49 1.18 118 0 0 -54 53 18 2 4 0.4 20 317 25 -55 47 12 -54 0 27 -56 5 17 -53 43 11 1.18 119 0 0 -55 7 28 2 4 1.8 19 316 25 -56 1 20 -54 14 39 -56 19 24 -53 57 23 1.18 120 0 0 -55 21 29 2 4 3.1 19 315 25 -56 15 19 -54 28 42 -56 33 22 -54 11 27 1.18 121 0 0 -55 35 20 2 4 4.4 18 314 25 -56 29 8 -54 42 36 -56 47 10 -54 25 22 1.18 122 0 0 -55 49 3 2 4 5.7 17 313 25 -56 42 47 -54 56 21 -57 0 48 -54 39 8 1.18 123 0 0 -56 2 35 2 4 6.9 17 312 25 -56 56 17 -55 9 56 -57 14 17 -54 52 44 1.18 124 0 0 -56 15 58 2 4 8.0 16 312 26 -57 9 36 -55 23 21 -57 27 35 -55 6 10 1.18 125 0 0 -56 29 11 2 4 9.1 16 311 26 -57 22 46 -55 36 37 -57 40 44 -55 19 27 1.18 126 0 0 -56 42 13 2 4 10.2 15 310 26 -57 35 45 -55 49 43 -57 53 42 -55 32 33 1.18 127 0 0 -56 55 5 2 4 11.2 15 309 26 -57 48 34 -56 2 38 -58 6 30 -55 45 30 1.18 128 0 0 -57 7 47 2 4 12.2 14 308 26 -58 1 13 -56 15 23 -58 19 7 -55 58 16 1.18 129 0 0 -57 20 19 2 4 13.1 13 307 26 -58 13 40 -56 27 58 -58 31 34 -56 10 52 1.18 130 0 0 -57 32 39 2 4 14.0 13 306 26 -58 25 57 -56 40 22 -58 43 50 -56 23 17 1.18 131 0 0 -57 44 49 2 4 14.9 12 305 26 -58 38 3 -56 52 36 -58 55 54 -56 35 32 1.18 132 0 0 -57 56 48 2 4 15.7 12 304 26 -58 49 59 -57 4 38 -59 7 48 -56 47 36 1.18 133 0 0 -58 8 36 2 4 16.4 11 304 26 -59 1 43 -57 16 30 -59 19 31 -56 59 29 1.18 134 0 0 -58 20 13 2 4 17.1 11 303 26 -59 13 16 -57 28 11 -59 31 3 -57 11 11 1.19 135 0 0 -58 31 39 2 4 17.8 10 302 26 -59 24 38 -57 39 41 -59 42 23 -57 22 42 1.19 136 0 0 -58 42 54 2 4 18.4 10 301 25 -59 35 48 -57 51 0 -59 53 32 -57 34 2 1.19 137 0 0 -58 53 58 2 4 19.0 9 300 25 -59 46 48 -58 2 7 -60 4 30 -57 45 10 1.19 138 0 0 -59 4 50 2 4 19.6 9 299 25 -59 57 36 -58 13 3 -60 15 17 -57 56 8 1.19 139 0 0 -59 15 31 2 4 20.1 8 298 25 -60 8 12 -58 23 48 -60 25 52 -58 6 54 1.19 140 0 0 -59 26 0 2 4 20.6 7 297 25 -60 18 37 -58 34 22 -60 36 15 -58 17 29 1.19 141 0 0 -59 36 18 2 4 21.1 7 297 25 -60 28 51 -58 44 44 -60 46 27 -58 27 52 1.19 142 0 0 -59 46 24 2 4 21.5 6 296 25 -60 38 53 -58 54 54 -60 56 28 -58 38 4 1.20 143 0 0 -59 56 19 2 4 21.9 6 295 25 -60 48 43 -59 4 53 -61 6 17 -58 48 5 1.20 144 0 0 -60 6 3 2 4 22.2 5 294 25 -60 58 22 -59 14 41 -61 15 54 -58 57 54 1.20 145 0 0 -60 15 34 2 4 22.5 5 293 25 -61 7 49 -59 24 17 -61 25 20 -59 7 31 1.21 146 0 0 -60 24 55 2 4 22.8 4 292 24 -61 17 5 -59 33 42 -61 34 34 -59 16 57 1.21 147 0 0 -60 34 3 2 4 23.0 4 291 24 -61 26 9 -59 42 54 -61 43 37 -59 26 11 1.22 148 0 0 -60 43 0 2 4 23.2 3 290 24 -61 35 2 -59 51 56 -61 52 28 -59 35 14 1.22 149 0 0 -60 51 46 2 4 23.4 3 290 24 -61 43 43 -60 0 46 -62 1 7 -59 44 5 1.23 150 0 0 -61 0 20 2 4 23.6 2 289 24 -61 52 12 -60 9 24 -62 9 35 -59 52 44 1.25 151 0 0 -61 8 42 2 4 23.7 2 288 24 -62 0 30 -60 17 50 -62 17 52 -60 1 12 1.27 152 0 0 -61 16 53 2 4 23.8 1 287 24 -62 8 37 -60 26 5 -62 25 56 -60 9 29 1.32 153 0 0 -61 24 52 2 4 23.8 1 286 23 -62 16 31 -60 34 9 -62 33 50 -60 17 33 1.41 154 0 0 -61 32 40 2 4 23.8 0 285 23 -62 24 15 -60 42 0 .. .. .. -60 25 27 1.91 155 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. -60 33 8 .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: UCAC4 486-023628 * constellation : Monoceros * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 27 59.7780 DE: +07 02 59.885 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 27 59.7780 DE: +07 02 59.885 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 10.8 * B mag [mag]: 13.0 * Diameter [mas]: 0.90 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (909) Ulla asteroid class: approx. diameter [km]: 116 approx. diameter ["]: 0.045 distance from Earth [AU]: 3.57500 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#123 date of fit: 2023 Apr 27 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", 0.001", 79.457° remarks: * orbital elements for (909)Ulla : Mean anomaly = 52.4112595296 deg Arg. of pericenter = 231.4090829592 deg Long. of node = 146.0989012363 deg Inclination = 18.7693077315 deg Eccentricity = 0.0939356236 Semimajor axis = 3.5515712075 AU Perihelion dist = 3.2179521514 AU Mag: H = 8.79, G = 0.15 Epoch of elements : MJD 60562.08451808 TDT (2024 Sep 09.0845) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1232023Apr27,4.65,2024,9,9,2.028443,-0.166458,-0.740565,14.065469,-3.170386,-0.005452,-0.000274,0.000000,0.000000 78.2847,7.0371,148.90,5.17,False UCAC4 486-023628,6.46660496,7.0499681,12.97,10.77,9.58,0.9,4,,6.48865840,7.0370551,4.32,5.05,0,0,0 909,Ulla,15.07,118.758,3.5750,0,0,2.325,-7.80,,6.4,0 0,52.3988,2024,9,9,231.4091,146.0989,18.7693,0.09394,3.55157,3.21795,8.79,5.0,0.15 1.165,0.0190,0.0011,79,0.0076,Known errors,1.13,0,-1,-1 20240909_023628,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org