IOTA/IOTA-ES occultation update for (860) Ursina / TYC 257-00763-1 event on 2024 Dec 11, 04:10 UT Visible from Summary ------- On 2024 Dec 11 UT, the 33.856 km diameter asteroid (860) Ursina will occult a 11.2 mag star in the constellation Sextans for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.48 mag to 15.62 mag (the magnitude of the asteroid) for at most 2.830 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 Dec 11, 04:01 - 2024 Dec 11, 04:19 * geocentric midpoint of event [JD]: 2460655.67372471 * magnitude of target star: 11.16 * magnitude drop [mag]: 4.48 * estimated maximum duration [s]: 2.830 * Moon: 77 % sunlit, 140° distance * Sun: 97° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.19 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.007, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.002", 123°) * approx speed of asteroid's shadow [km/s]: 11.9499 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 257-00763-1 by 860 Ursina on 2024 Dec 11 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 - 71 0 0 37 0 17 4 1 27.1 0 86 -74 .. .. .. 37 9 38 .. .. .. 37 13 9 .... - 70 0 0 37 3 38 4 1 27.1 1 86 -74 36 54 18 37 12 58 36 50 47 37 16 29 0.07 - 69 0 0 37 6 21 4 1 27.3 2 87 -75 36 57 1 37 15 40 36 53 30 37 19 11 0.14 - 68 0 0 37 8 25 4 1 27.5 2 87 -75 36 59 5 37 17 44 36 55 35 37 21 15 0.16 - 67 0 0 37 9 51 4 1 27.9 3 88 -75 37 0 32 37 19 10 36 57 1 37 22 41 0.17 - 66 0 0 37 10 39 4 1 28.4 4 89 -75 37 1 20 37 19 58 36 57 49 37 23 28 0.17 - 65 0 0 37 10 49 4 1 29.0 5 89 -76 37 1 29 37 20 8 36 57 58 37 23 38 0.18 - 64 0 0 37 10 20 4 1 29.7 6 90 -76 37 1 0 37 19 39 36 57 30 37 23 10 0.18 - 63 0 0 37 9 13 4 1 30.5 6 90 -76 36 59 53 37 18 32 36 56 22 37 22 3 0.19 - 62 0 0 37 7 27 4 1 31.4 7 91 -76 36 58 7 37 16 47 36 54 36 37 20 18 0.19 - 61 0 0 37 5 3 4 1 32.4 8 92 -76 36 55 43 37 14 23 36 52 12 37 17 54 0.19 - 60 0 0 37 2 0 4 1 33.5 9 92 -76 36 52 39 37 11 21 36 49 8 37 14 52 0.19 - 59 0 0 36 58 18 4 1 34.7 10 93 -76 36 48 57 37 7 40 36 45 25 37 11 11 0.19 - 58 0 0 36 53 58 4 1 36.1 10 93 -76 36 44 35 37 3 20 36 41 3 37 6 51 0.19 - 57 0 0 36 48 57 4 1 37.5 11 94 -75 36 39 34 36 58 20 36 36 2 37 1 52 0.19 - 56 0 0 36 43 18 4 1 39.0 12 95 -75 36 33 54 36 52 41 36 30 21 36 56 14 0.20 - 55 0 0 36 36 58 4 1 40.7 13 95 -75 36 27 33 36 46 23 36 24 0 36 49 55 0.20 - 54 0 0 36 29 58 4 1 42.5 14 96 -75 36 20 32 36 39 24 36 16 59 36 42 57 0.20 - 53 0 0 36 22 18 4 1 44.4 15 96 -74 36 12 50 36 31 45 36 9 17 36 35 19 0.20 - 52 0 0 36 13 57 4 1 46.4 15 97 -74 36 4 28 36 23 25 36 0 54 36 26 59 0.20 - 51 0 0 36 4 54 4 1 48.5 16 98 -74 35 55 24 36 14 25 35 51 49 36 17 59 0.20 - 50 0 0 35 55 10 4 1 50.8 17 98 -73 35 45 38 36 4 42 35 42 3 36 8 17 0.20 - 49 0 0 35 44 44 4 1 53.2 18 99 -73 35 35 11 35 54 18 35 31 35 35 57 53 0.20 - 48 0 0 35 33 36 4 1 55.7 19 99 -72 35 24 0 35 43 11 35 20 23 35 46 47 0.20 - 47 0 0 35 21 44 4 1 58.3 20 100 -72 35 12 7 35 31 21 35 8 29 35 34 58 0.20 - 46 0 0 35 9 9 4 2 1.1 20 100 -71 34 59 29 35 18 48 34 55 51 35 22 26 0.20 - 45 0 0 34 55 49 4 2 3.9 21 101 -71 34 46 7 35 5 30 34 42 28 35 9 9 0.20 - 44 0 0 34 41 45 4 2 7.0 22 101 -70 34 32 1 34 51 28 34 28 21 34 55 8 0.20 - 43 0 0 34 26 55 4 2 10.1 23 102 -70 34 17 9 34 36 41 34 13 28 34 40 22 0.20 - 42 0 0 34 11 20 4 2 13.4 24 103 -69 34 1 31 34 21 8 33 57 49 34 24 49 0.20 - 41 0 0 33 54 57 4 2 16.9 25 103 -68 33 45 6 34 4 48 33 41 23 34 8 31 0.20 - 40 0 0 33 37 48 4 2 20.5 26 104 -68 33 27 53 33 47 41 33 24 10 33 51 25 0.21 - 39 0 0 33 19 50 4 2 24.2 26 104 -67 33 9 53 33 29 46 33 6 8 33 33 31 0.21 - 38 0 0 33 1 3 4 2 28.1 27 105 -66 32 51 3 33 11 3 32 47 17 33 14 48 0.21 - 37 0 0 32 41 26 4 2 32.1 28 105 -66 32 31 23 32 51 29 32 27 36 32 55 16 0.21 - 36 0 0 32 20 59 4 2 36.4 29 106 -65 32 10 53 32 31 5 32 7 5 32 34 53 0.21 - 35 0 0 31 59 41 4 2 40.7 30 106 -64 31 49 31 32 9 50 31 45 42 32 13 40 0.21 - 34 0 0 31 37 30 4 2 45.3 31 107 -63 31 27 17 31 47 43 31 23 26 31 51 34 0.21 - 33 0 0 31 14 27 4 2 50.0 32 107 -63 31 4 10 31 24 43 31 0 17 31 28 35 0.21 - 32 0 0 30 50 29 4 2 54.9 33 107 -62 30 40 8 31 0 49 30 36 14 31 4 42 0.21 - 31 0 0 30 25 36 4 3 0.0 34 108 -61 30 15 11 30 36 0 30 11 16 30 39 55 0.21 - 30 0 0 29 59 47 4 3 5.2 35 108 -60 29 49 18 30 10 15 29 45 22 30 14 11 0.21 - 29 0 0 29 33 1 4 3 10.7 36 109 -59 29 22 28 29 43 33 29 18 30 29 47 31 0.21 - 28 0 0 29 5 17 4 3 16.3 37 109 -58 28 54 40 29 15 54 28 50 40 29 19 53 0.21 - 27 0 0 28 36 34 4 3 22.2 38 110 -58 28 25 52 28 47 15 28 21 51 28 51 16 0.21 - 26 0 0 28 6 51 4 3 28.3 39 110 -57 27 56 4 28 17 36 27 52 1 28 21 39 0.21 - 25 0 0 27 36 6 4 3 34.5 40 110 -56 27 25 15 27 46 56 27 21 10 27 51 1 0.21 - 24 0 0 27 4 19 4 3 41.0 41 111 -55 26 53 24 27 15 14 26 49 17 27 19 21 0.21 - 23 0 0 26 31 29 4 3 47.7 42 111 -54 26 20 28 26 42 29 26 16 19 26 46 38 0.21 - 22 0 0 25 57 34 4 3 54.7 43 111 -53 25 46 29 26 8 40 25 42 18 26 12 50 0.21 - 21 0 0 25 22 34 4 4 1.8 44 111 -52 25 11 23 25 33 45 25 7 10 25 37 57 0.21 - 20 0 0 24 46 28 4 4 9.2 45 112 -51 24 35 11 24 57 43 24 30 56 25 1 58 0.21 - 19 0 0 24 9 13 4 4 16.9 46 112 -50 23 57 51 24 20 34 23 53 34 24 24 51 0.21 - 18 0 0 23 30 50 4 4 24.8 47 112 -49 23 19 22 23 42 17 23 15 3 23 46 35 0.21 - 17 0 0 22 51 17 4 4 32.9 49 112 -48 22 39 44 23 2 50 22 35 22 23 7 11 0.21 - 16 0 0 22 10 34 4 4 41.3 50 112 -47 21 58 54 22 22 12 21 54 31 22 26 35 0.21 - 15 0 0 21 28 38 4 4 50.0 51 112 -46 21 16 53 21 40 23 21 12 27 21 44 48 0.21 - 14 0 0 20 45 31 4 4 58.9 52 112 -45 20 33 39 20 57 22 20 29 11 21 1 49 0.21 - 13 0 0 20 1 10 4 5 8.1 53 112 -44 19 49 12 20 13 7 19 44 42 20 17 37 0.21 - 12 0 0 19 15 35 4 5 17.6 54 112 -42 19 3 31 19 27 38 18 58 58 19 32 11 0.21 - 11 0 0 18 28 45 4 5 27.4 56 112 -41 18 16 35 18 40 55 18 11 59 18 45 30 0.21 - 10 0 0 17 40 41 4 5 37.4 57 112 -40 17 28 23 17 52 57 17 23 46 17 57 34 0.21 - 9 0 0 16 51 20 4 5 47.7 58 111 -39 16 38 56 17 3 43 16 34 16 17 8 23 0.21 - 8 0 0 16 0 44 4 5 58.3 59 111 -38 15 48 13 16 13 14 15 43 31 16 17 56 0.21 - 7 0 0 15 8 52 4 6 9.2 61 110 -37 14 56 14 15 21 28 14 51 29 15 26 13 0.21 - 6 0 0 14 15 44 4 6 20.3 62 110 -35 14 2 59 14 28 27 13 58 11 14 33 14 0.21 - 5 0 0 13 21 19 4 6 31.8 63 109 -34 13 8 29 13 34 10 13 3 38 13 38 59 0.21 - 4 0 0 12 25 40 4 6 43.5 64 108 -33 12 12 42 12 38 37 12 7 49 12 43 29 0.21 - 3 0 0 11 28 46 4 6 55.5 66 107 -32 11 15 41 11 41 49 11 10 45 11 46 44 0.21 - 2 0 0 10 30 38 4 7 7.7 67 106 -30 10 17 26 10 43 48 10 12 28 10 48 46 0.21 - 1 0 0 9 31 16 4 7 20.3 68 104 -29 9 17 58 9 44 34 9 12 57 9 49 34 0.20 0 0 0 8 30 44 4 7 33.1 69 103 -28 8 17 19 8 44 8 8 12 15 8 49 10 0.20 1 0 0 7 29 1 4 7 46.1 71 101 -26 7 15 30 7 42 32 7 10 24 7 47 37 0.20 2 0 0 6 26 11 4 7 59.4 72 98 -25 6 12 33 6 39 48 6 7 24 6 44 56 0.20 3 0 0 5 22 15 4 8 12.8 73 96 -23 5 8 30 5 35 58 5 3 19 5 41 8 0.20 4 0 0 4 17 15 4 8 26.6 74 92 -22 4 3 24 4 31 5 3 58 11 4 36 18 0.20 5 0 0 3 11 16 4 8 40.5 75 88 -21 2 57 19 3 25 12 2 52 3 3 30 26 0.20 6 0 0 2 4 19 4 8 54.6 76 84 -19 1 50 16 2 18 21 1 44 58 2 23 38 0.20 7 0 0 0 56 29 4 9 8.8 77 78 -18 0 42 20 1 10 36 0 37 0 1 15 55 0.20 8 0 0 - 0 12 12 4 9 23.2 78 72 -16 - 0 26 25 0 2 1 - 0 31 47 0 7 22 0.20 9 0 0 - 1 21 37 4 9 37.7 78 65 -15 - 1 35 56 - 1 7 19 - 1 41 20 - 1 1 56 0.20 10 0 0 - 2 31 44 4 9 52.4 79 58 -14 - 2 46 8 - 2 17 21 - 2 51 34 - 2 11 57 0.20 11 0 0 - 3 42 28 4 10 7.1 79 50 -12 - 3 56 56 - 3 28 0 - 4 2 23 - 3 22 34 0.20 12 0 0 - 4 53 42 4 10 21.8 79 42 -11 - 5 8 15 - 4 39 11 - 5 13 43 - 4 33 43 0.20 13 0 0 - 6 5 23 4 10 36.6 79 34 -9 - 6 19 59 - 5 50 48 - 6 25 29 - 5 45 19 0.19 14 0 0 - 7 17 25 4 10 51.4 78 26 -8 - 7 32 4 - 7 2 47 - 7 37 36 - 6 57 16 0.19 15 0 0 - 8 29 42 4 11 6.2 77 19 -6 - 8 44 24 - 8 15 1 - 8 49 56 - 8 9 29 0.19 16 0 0 - 9 42 8 4 11 20.9 76 14 -5 - 9 56 53 - 9 27 24 -10 2 26 - 9 21 52 0.19 17 0 0 -10 54 38 4 11 35.6 75 8 -3 -11 9 24 -10 39 52 -11 14 58 -10 34 19 0.19 18 0 0 -12 7 5 4 11 50.2 74 4 -2 -12 21 53 -11 52 18 -12 27 28 -11 46 45 0.19 19 0 0 -13 19 25 4 12 4.6 73 360 -1 -13 34 14 -13 4 37 -13 39 49 -12 59 3 0.19 20 0 0 -14 31 30 4 12 18.9 72 356 1 -14 46 19 -14 16 41 -14 51 55 -14 11 7 0.19 21 0 0 -15 43 15 4 12 33.0 71 353 2 -15 58 5 -15 28 27 -16 3 40 -15 22 53 0.19 22 0 0 -16 54 35 4 12 46.9 69 351 4 -17 9 24 -16 39 47 -17 14 59 -16 34 13 0.19 23 0 0 -18 5 24 4 13 0.6 68 348 5 -18 20 13 -17 50 37 -18 25 47 -17 45 3 0.19 24 0 0 -19 15 37 4 13 14.0 67 346 6 -19 30 24 -19 0 52 -19 35 58 -18 55 18 0.19 25 0 0 -20 25 9 4 13 27.2 65 345 8 -20 39 54 -20 10 25 -20 45 28 -20 4 53 0.18 26 0 0 -21 33 55 4 13 40.1 64 343 9 -21 48 38 -21 19 13 -21 54 10 -21 13 42 0.18 27 0 0 -22 41 51 4 13 52.7 63 341 10 -22 56 30 -22 27 12 -23 2 2 -22 21 41 0.18 28 0 0 -23 48 51 4 14 5.1 61 340 12 -24 3 28 -23 34 16 -24 8 59 -23 28 46 0.18 29 0 0 -24 54 54 4 14 17.1 60 338 13 -25 9 28 -24 40 22 -25 14 57 -24 34 53 0.18 30 0 0 -25 59 55 4 14 28.8 59 337 14 -26 14 25 -25 45 26 -26 19 52 -25 40 0 0.18 31 0 0 -27 3 51 4 14 40.2 57 336 16 -27 18 16 -26 49 27 -27 23 42 -26 44 1 0.18 32 0 0 -28 6 39 4 14 51.2 56 335 17 -28 21 0 -27 52 20 -28 26 25 -27 46 56 0.18 33 0 0 -29 8 18 4 15 1.9 55 334 18 -29 22 34 -28 54 3 -29 27 56 -28 48 41 0.18 34 0 0 -30 8 44 4 15 12.3 53 333 19 -30 22 55 -29 54 34 -30 28 15 -29 49 14 0.18 35 0 0 -31 7 56 4 15 22.3 52 332 20 -31 22 2 -30 53 51 -31 27 20 -30 48 33 0.18 36 0 0 -32 5 53 4 15 32.0 51 331 21 -32 19 53 -31 51 54 -32 25 10 -31 46 38 0.18 37 0 0 -33 2 33 4 15 41.3 49 330 22 -33 16 28 -32 48 40 -33 21 42 -32 43 26 0.18 38 0 0 -33 57 56 4 15 50.3 48 329 23 -34 11 45 -33 44 9 -34 16 57 -33 38 57 0.18 39 0 0 -34 52 2 4 15 59.0 47 328 24 -35 5 44 -34 38 20 -35 10 54 -34 33 11 0.18 40 0 0 -35 44 49 4 16 7.4 46 327 25 -35 58 25 -35 31 13 -36 3 32 -35 26 6 0.18 41 0 0 -36 36 17 4 16 15.4 45 327 26 -36 49 47 -36 22 48 -36 54 52 -36 17 43 0.18 42 0 0 -37 26 28 4 16 23.1 43 326 27 -37 39 51 -37 13 5 -37 44 54 -37 8 3 0.18 43 0 0 -38 15 20 4 16 30.5 42 325 28 -38 28 38 -38 2 4 -38 33 38 -37 57 4 0.18 44 0 0 -39 2 56 4 16 37.7 41 324 29 -39 16 6 -38 49 46 -39 21 4 -38 44 48 0.18 45 0 0 -39 49 14 4 16 44.5 40 323 30 -40 2 19 -39 36 11 -40 7 14 -39 31 16 0.18 46 0 0 -40 34 17 4 16 51.1 39 322 31 -40 47 15 -40 21 20 -40 52 8 -40 16 27 0.18 47 0 0 -41 18 5 4 16 57.3 38 322 32 -41 30 56 -41 5 14 -41 35 47 -41 0 24 0.18 48 0 0 -42 0 38 4 17 3.4 37 321 33 -42 13 23 -41 47 54 -42 18 11 -41 43 7 0.18 49 0 0 -42 41 59 4 17 9.1 36 320 33 -42 54 38 -42 29 22 -42 59 23 -42 24 36 0.18 50 0 0 -43 22 8 4 17 14.6 35 319 34 -43 34 40 -43 9 37 -43 39 24 -43 4 54 0.18 51 0 0 -44 1 7 4 17 19.9 34 318 35 -44 13 33 -43 48 42 -44 18 14 -43 44 2 0.18 52 0 0 -44 38 57 4 17 24.9 33 318 36 -44 51 16 -44 26 38 -44 55 54 -44 22 0 0.18 53 0 0 -45 15 38 4 17 29.8 32 317 36 -45 27 51 -45 3 26 -45 32 28 -44 58 50 0.18 54 0 0 -45 51 14 4 17 34.4 31 316 37 -46 3 21 -45 39 8 -46 7 54 -45 34 34 0.18 55 0 0 -46 25 44 4 17 38.8 30 315 38 -46 37 45 -46 13 44 -46 42 16 -46 9 13 0.18 56 0 0 -46 59 11 4 17 43.0 29 315 38 -47 11 5 -46 47 17 -47 15 35 -46 42 48 0.18 57 0 0 -47 31 35 4 17 47.0 28 314 39 -47 43 24 -47 19 47 -47 47 51 -47 15 20 0.18 58 0 0 -48 2 59 4 17 50.8 28 313 39 -48 14 42 -47 51 16 -48 19 7 -47 46 52 0.18 59 0 0 -48 33 23 4 17 54.5 27 312 40 -48 45 0 -48 21 46 -48 49 23 -48 17 24 0.18 60 0 0 -49 2 49 4 17 58.0 26 311 41 -49 14 21 -48 51 18 -49 18 41 -48 46 58 0.18 61 0 0 -49 31 19 4 18 1.3 25 311 41 -49 42 45 -49 19 53 -49 47 4 -49 15 35 0.18 62 0 0 -49 58 53 4 18 4.5 24 310 42 -50 10 14 -49 47 33 -50 14 31 -49 43 17 0.18 63 0 0 -50 25 34 4 18 7.5 24 309 42 -50 36 49 -50 14 19 -50 41 4 -50 10 5 0.18 64 0 0 -50 51 22 4 18 10.4 23 308 43 -51 2 32 -50 40 12 -51 6 45 -50 36 0 0.18 65 0 0 -51 16 19 4 18 13.1 22 307 43 -51 27 24 -51 5 14 -51 31 34 -51 1 3 0.18 66 0 0 -51 40 25 4 18 15.7 21 306 44 -51 51 26 -51 29 25 -51 55 34 -51 25 17 0.18 67 0 0 -52 3 43 4 18 18.2 21 306 44 -52 14 39 -51 52 48 -52 18 46 -51 48 41 0.18 68 0 0 -52 26 13 4 18 20.6 20 305 45 -52 37 4 -52 15 23 -52 41 10 -52 11 18 0.18 69 0 0 -52 47 57 4 18 22.8 19 304 45 -52 58 44 -52 37 12 -53 2 47 -52 33 8 0.18 70 0 0 -53 8 56 4 18 25.0 18 303 45 -53 19 38 -52 58 15 -53 23 40 -52 54 13 0.18 71 0 0 -53 29 11 4 18 27.0 18 302 46 -53 39 48 -53 18 34 -53 43 48 -53 14 34 0.18 72 0 0 -53 48 42 4 18 28.9 17 302 46 -53 59 16 -53 38 9 -54 3 14 -53 34 11 0.18 73 0 0 -54 7 32 4 18 30.7 16 301 47 -54 18 1 -53 57 3 -54 21 58 -53 53 6 0.18 74 0 0 -54 25 40 4 18 32.5 16 300 47 -54 36 5 -54 15 15 -54 40 1 -54 11 20 0.18 75 0 0 -54 43 8 4 18 34.1 15 299 47 -54 53 30 -54 32 47 -54 57 24 -54 28 54 0.18 76 0 0 -54 59 58 4 18 35.7 14 298 48 -55 10 16 -54 49 40 -55 14 8 -54 45 48 0.18 77 0 0 -55 16 9 4 18 37.1 14 297 48 -55 26 23 -55 5 55 -55 30 14 -55 2 4 0.18 78 0 0 -55 31 42 4 18 38.5 13 297 48 -55 41 53 -55 21 32 -55 45 43 -55 17 42 0.18 79 0 0 -55 46 40 4 18 39.8 13 296 48 -55 56 47 -55 36 32 -56 0 36 -55 32 44 0.18 80 0 0 -56 1 1 4 18 41.0 12 295 49 -56 11 5 -55 50 57 -56 14 53 -55 47 10 0.18 81 0 0 -56 14 47 4 18 42.2 11 294 49 -56 24 48 -56 4 47 -56 28 35 -56 1 1 0.18 82 0 0 -56 28 0 4 18 43.3 11 293 49 -56 37 58 -56 18 2 -56 41 43 -56 14 17 0.18 83 0 0 -56 40 38 4 18 44.3 10 292 50 -56 50 33 -56 30 43 -56 54 18 -56 27 0 0.18 84 0 0 -56 52 44 4 18 45.2 10 292 50 -57 2 37 -56 42 52 -57 6 20 -56 39 9 0.18 85 0 0 -57 4 18 4 18 46.1 9 291 50 -57 14 8 -56 54 28 -57 17 50 -56 50 47 0.19 86 0 0 -57 15 20 4 18 46.9 8 290 50 -57 25 7 -57 5 33 -57 28 48 -57 1 52 0.19 87 0 0 -57 25 51 4 18 47.7 8 289 51 -57 35 36 -57 16 7 -57 39 16 -57 12 27 0.19 88 0 0 -57 35 52 4 18 48.4 7 288 51 -57 45 34 -57 26 10 -57 49 14 -57 22 30 0.19 89 0 0 -57 45 22 4 18 49.0 7 287 51 -57 55 3 -57 35 42 -57 58 41 -57 32 4 0.19 90 0 0 -57 54 24 4 18 49.6 6 286 51 -58 4 2 -57 44 46 -58 7 40 -57 41 8 0.19 91 0 0 -58 2 56 4 18 50.1 6 286 51 -58 12 32 -57 53 20 -58 16 9 -57 49 44 0.19 92 0 0 -58 11 0 4 18 50.6 5 285 52 -58 20 34 -58 1 26 -58 24 11 -57 57 50 0.19 93 0 0 -58 18 36 4 18 51.0 4 284 52 -58 28 9 -58 9 4 -58 31 44 -58 5 29 0.19 94 0 0 -58 25 44 4 18 51.4 4 283 52 -58 35 15 -58 16 14 -58 38 50 -58 12 39 0.19 95 0 0 -58 32 25 4 18 51.7 3 282 52 -58 41 55 -58 22 56 -58 45 29 -58 19 22 0.19 96 0 0 -58 38 40 4 18 52.0 3 281 52 -58 48 7 -58 29 12 -58 51 41 -58 25 38 0.19 97 0 0 -58 44 27 4 18 52.2 2 281 52 -58 53 54 -58 35 1 -58 57 27 -58 31 28 0.19 98 0 0 -58 49 48 4 18 52.4 2 280 52 -58 59 14 -58 40 23 -59 2 46 -58 36 51 0.20 99 0 0 -58 54 44 4 18 52.5 1 279 53 -59 4 8 -58 45 20 -59 7 40 -58 41 48 0.20 100 0 0 -58 59 13 4 18 52.6 1 278 53 -59 8 36 -58 49 50 -59 12 8 -58 46 19 0.21 101 0 0 -59 3 17 4 18 52.7 0 277 53 -59 12 39 -58 53 55 -59 16 11 -58 50 24 0.26 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 257-00763-1 * constellation : Sextans * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 48 05.0944 DE: +03 37 28.554 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 48 05.0946 DE: +03 37 28.553 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.2 * B mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (860) Ursina asteroid class: approx. diameter [km]: 34 approx. diameter ["]: 0.017 distance from Earth [AU]: 2.81440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.008", 0.002", 122.645° remarks: * orbital elements for (860)Ursina : Mean anomaly = 172.1367856184 deg Arg. of pericenter = 21.1467720427 deg Long. of node = 309.2101507160 deg Inclination = 13.2961185500 deg Eccentricity = 0.1087144757 Semimajor axis = 2.7947062210 AU Perihelion dist = 2.4908811994 AU Mag: H = 9.97, G = 0.15 Epoch of elements : MJD 60655.17372479 TDT (2024 Dec 11.1737) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Feb11,2.83,2024,12,11,4.169393,-0.143094,-0.128061,4.514263,-5.011406,-0.005478,0.002303,0.000000,0.000000 19.4314,3.4933,115.79,-23.03,False TYC 257-00763-1,10.80141510,3.6245984,11.41,11.16,11.03,0.0,0,,10.82293782,3.4933359,4.48,4.17,0,0,0 860,Ursina,15.62,33.856,2.8144,0,0,0.942,-15.66,,1.6,0 0,172.1001,2024,12,11,21.1468,309.2102,13.2961,0.10871,2.79471,2.49088,9.97,5.0,0.15 1.188,0.0083,0.0023,123,0.0031,Known errors,0.85,0,-1,-1 20241211_0763-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:39 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org