IOTA/IOTA-ES occultation update for (3545) Gaffey / UCAC4 327-187928 event on 2024 Oct 07, 21:18 UT Visible from Summary ------- On 2024 Oct 07 UT, the 12.442 km diameter asteroid (3545) Gaffey will occult a 11.9 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.59 mag to 17.43 mag (the magnitude of the asteroid) for at most 0.930 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: 89 * date and approx. time of event: 2024 Oct 07, 21:09 - 2024 Oct 07, 21:26 * geocentric midpoint of event [JD]: 2460591.38751025 * magnitude of target star: 11.85 * magnitude drop [mag]: 5.59 * estimated maximum duration [s]: 0.930 * Moon: 21 % sunlit, 43° distance * Sun: 99° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 12 * 1 sigma uncertainty interval [path widths]: +/- 0.53 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.003", 82°) * approx speed of asteroid's shadow [km/s]: 13.4017 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 327-187928 by 3545 Gaffey on 2024 Oct 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 -135 0 0 -16 24 49 21 10 5.3 1 115 78 -16 28 34 -16 21 5 -16 32 33 -16 17 6 .... -134 0 0 -16 52 12 21 10 5.6 2 115 77 -16 55 57 -16 48 28 -16 59 55 -16 44 29 0.12 -133 0 0 -17 19 15 21 10 6.0 3 115 76 -17 22 59 -17 15 31 -17 26 57 -17 11 33 0.10 -132 0 0 -17 45 58 21 10 6.5 4 114 76 -17 49 41 -17 42 14 -17 53 39 -17 38 16 0.09 -131 0 0 -18 12 19 21 10 7.2 5 114 75 -18 16 2 -18 8 36 -18 19 59 -18 4 39 0.09 -130 0 0 -18 38 19 21 10 8.1 6 114 74 -18 42 1 -18 34 36 -18 45 58 -18 30 39 0.08 -129 0 0 -19 3 56 21 10 9.2 7 114 73 -19 7 38 -19 0 14 -19 11 35 -18 56 18 0.08 -128 0 0 -19 29 12 21 10 10.3 8 113 72 -19 32 53 -19 25 30 -19 36 49 -19 21 34 0.08 -127 0 0 -19 54 4 21 10 11.7 9 113 71 -19 57 46 -19 50 23 -20 1 41 -19 46 28 0.08 -126 0 0 -20 18 34 21 10 13.1 10 113 70 -20 22 14 -20 14 53 -20 26 9 -20 10 58 0.08 -125 0 0 -20 42 40 21 10 14.7 11 112 69 -20 46 20 -20 38 59 -20 50 14 -20 35 5 0.07 -124 0 0 -21 6 21 21 10 16.5 12 112 68 -21 10 1 -21 2 42 -21 13 55 -20 58 48 0.07 -123 0 0 -21 29 39 21 10 18.4 13 111 67 -21 33 18 -21 26 0 -21 37 11 -21 22 7 0.07 -122 0 0 -21 52 32 21 10 20.4 14 111 66 -21 56 11 -21 48 53 -22 0 4 -21 45 1 0.07 -121 0 0 -22 15 0 21 10 22.6 15 111 65 -22 18 39 -22 11 22 -22 22 31 -22 7 30 0.07 -120 0 0 -22 37 3 21 10 24.9 16 110 64 -22 40 41 -22 33 26 -22 44 33 -22 29 34 0.07 -119 0 0 -22 58 41 21 10 27.3 17 110 63 -23 2 18 -22 55 4 -23 6 10 -22 51 13 0.07 -118 0 0 -23 19 53 21 10 29.9 18 110 62 -23 23 30 -23 16 17 -23 27 21 -23 12 26 0.07 -117 0 0 -23 40 40 21 10 32.6 19 109 61 -23 44 16 -23 37 4 -23 48 6 -23 33 14 0.07 -116 0 0 -24 1 0 21 10 35.4 20 109 60 -24 4 36 -23 57 25 -24 8 26 -23 53 35 0.07 -115 0 0 -24 20 55 21 10 38.3 21 108 59 -24 24 30 -24 17 20 -24 28 19 -24 13 31 0.07 -114 0 0 -24 40 23 21 10 41.3 22 108 58 -24 43 58 -24 36 48 -24 47 46 -24 33 0 0.07 -113 0 0 -24 59 24 21 10 44.5 23 107 57 -25 2 59 -24 55 50 -25 6 47 -24 52 2 0.07 -112 0 0 -25 17 59 21 10 47.8 24 107 56 -25 21 33 -25 14 26 -25 25 21 -25 10 38 0.07 -111 0 0 -25 36 8 21 10 51.1 25 107 55 -25 39 41 -25 32 35 -25 43 28 -25 28 48 0.07 -110 0 0 -25 53 49 21 10 54.6 26 106 54 -25 57 22 -25 50 17 -26 1 9 -25 46 30 0.07 -109 0 0 -26 11 4 21 10 58.2 27 106 54 -26 14 36 -26 7 32 -26 18 22 -26 3 46 0.06 -108 0 0 -26 27 52 21 11 1.9 28 105 53 -26 31 24 -26 24 20 -26 35 9 -26 20 35 0.06 -107 0 0 -26 44 13 21 11 5.7 29 105 52 -26 47 44 -26 40 41 -26 51 29 -26 36 56 0.06 -106 0 0 -27 0 6 21 11 9.6 30 104 51 -27 3 37 -26 56 35 -27 7 22 -26 52 51 0.06 -105 0 0 -27 15 33 21 11 13.5 31 104 50 -27 19 3 -27 12 2 -27 22 47 -27 8 18 0.06 -104 0 0 -27 30 32 21 11 17.6 32 103 49 -27 34 2 -27 27 2 -27 37 46 -27 23 19 0.06 -103 0 0 -27 45 5 21 11 21.8 33 103 48 -27 48 34 -27 41 35 -27 52 17 -27 37 52 0.06 -102 0 0 -27 59 10 21 11 26.0 34 102 47 -28 2 39 -27 55 40 -28 6 21 -27 51 58 0.06 -101 0 0 -28 12 47 21 11 30.4 35 102 46 -28 16 16 -28 9 18 -28 19 58 -28 5 36 0.06 -100 0 0 -28 25 58 21 11 34.8 36 101 45 -28 29 26 -28 22 29 -28 33 8 -28 18 48 0.06 - 99 0 0 -28 38 41 21 11 39.3 37 101 44 -28 42 9 -28 35 13 -28 45 51 -28 31 32 0.06 - 98 0 0 -28 50 57 21 11 43.9 37 100 43 -28 54 25 -28 47 30 -28 58 6 -28 43 49 0.06 - 97 0 0 -29 2 46 21 11 48.6 38 100 42 -29 6 13 -28 59 19 -29 9 54 -28 55 38 0.06 - 96 0 0 -29 14 8 21 11 53.4 39 99 42 -29 17 35 -29 10 41 -29 21 15 -29 7 1 0.06 - 95 0 0 -29 25 2 21 11 58.2 40 99 41 -29 28 29 -29 21 36 -29 32 9 -29 17 56 0.06 - 94 0 0 -29 35 29 21 12 3.1 41 98 40 -29 38 56 -29 32 3 -29 42 35 -29 28 24 0.06 - 93 0 0 -29 45 29 21 12 8.1 42 98 39 -29 48 55 -29 42 4 -29 52 34 -29 38 24 0.06 - 92 0 0 -29 55 2 21 12 13.2 43 97 38 -29 58 28 -29 51 37 -30 2 7 -29 47 58 0.06 - 91 0 0 -30 4 8 21 12 18.3 44 96 37 -30 7 33 -30 0 43 -30 11 12 -29 57 4 0.06 - 90 0 0 -30 12 47 21 12 23.5 45 96 36 -30 16 12 -30 9 22 -30 19 50 -30 5 44 0.06 - 89 0 0 -30 20 58 21 12 28.8 46 95 35 -30 24 23 -30 17 34 -30 28 1 -30 13 56 0.06 - 88 0 0 -30 28 43 21 12 34.2 46 95 34 -30 32 7 -30 25 18 -30 35 45 -30 21 41 0.06 - 87 0 0 -30 36 0 21 12 39.6 47 94 34 -30 39 25 -30 32 36 -30 43 2 -30 28 59 0.06 - 86 0 0 -30 42 51 21 12 45.0 48 94 33 -30 46 15 -30 39 27 -30 49 52 -30 35 50 0.06 - 85 0 0 -30 49 14 21 12 50.6 49 93 32 -30 52 38 -30 45 51 -30 56 15 -30 42 14 0.06 - 84 0 0 -30 55 11 21 12 56.2 50 92 31 -30 58 35 -30 51 47 -31 2 11 -30 48 11 0.06 - 83 0 0 -31 0 41 21 13 1.9 51 92 30 -31 4 4 -30 57 17 -31 7 40 -30 53 41 0.06 - 82 0 0 -31 5 43 21 13 7.6 52 91 29 -31 9 6 -31 2 20 -31 12 43 -30 58 44 0.06 - 81 0 0 -31 10 19 21 13 13.4 53 91 28 -31 13 42 -31 6 56 -31 17 18 -31 3 20 0.06 - 80 0 0 -31 14 28 21 13 19.3 54 90 27 -31 17 51 -31 11 5 -31 21 27 -31 7 29 0.06 - 79 0 0 -31 18 10 21 13 25.2 54 89 27 -31 21 33 -31 14 47 -31 25 8 -31 11 11 0.06 - 78 0 0 -31 21 25 21 13 31.1 55 89 26 -31 24 47 -31 18 2 -31 28 23 -31 14 27 0.05 - 77 0 0 -31 24 13 21 13 37.2 56 88 25 -31 27 36 -31 20 50 -31 31 11 -31 17 15 0.05 - 76 0 0 -31 26 34 21 13 43.3 57 88 24 -31 29 57 -31 23 12 -31 33 32 -31 19 36 0.05 - 75 0 0 -31 28 29 21 13 49.4 58 87 23 -31 31 51 -31 25 6 -31 35 27 -31 21 31 0.05 - 74 0 0 -31 29 56 21 13 55.6 59 86 22 -31 33 19 -31 26 34 -31 36 54 -31 22 59 0.05 - 73 0 0 -31 30 57 21 14 1.9 60 86 21 -31 34 19 -31 27 35 -31 37 55 -31 23 59 0.05 - 72 0 0 -31 31 31 21 14 8.2 60 85 20 -31 34 53 -31 28 8 -31 38 28 -31 24 33 0.05 - 71 0 0 -31 31 38 21 14 14.6 61 84 20 -31 35 0 -31 28 15 -31 38 35 -31 24 40 0.05 - 70 0 0 -31 31 18 21 14 21.0 62 84 19 -31 34 40 -31 27 55 -31 38 15 -31 24 20 0.05 - 69 0 0 -31 30 31 21 14 27.5 63 83 18 -31 33 53 -31 27 8 -31 37 28 -31 23 33 0.05 - 68 0 0 -31 29 17 21 14 34.0 64 82 17 -31 32 39 -31 25 54 -31 36 14 -31 22 19 0.05 - 67 0 0 -31 27 36 21 14 40.6 65 81 16 -31 30 58 -31 24 13 -31 34 33 -31 20 38 0.05 - 66 0 0 -31 25 28 21 14 47.3 66 81 15 -31 28 50 -31 22 5 -31 32 26 -31 18 30 0.05 - 65 0 0 -31 22 53 21 14 54.0 67 80 14 -31 26 15 -31 19 30 -31 29 51 -31 15 54 0.05 - 64 0 0 -31 19 50 21 15 0.7 67 79 13 -31 23 13 -31 16 28 -31 26 49 -31 12 52 0.05 - 63 0 0 -31 16 21 21 15 7.5 68 78 13 -31 19 44 -31 12 58 -31 23 20 -31 9 22 0.05 - 62 0 0 -31 12 25 21 15 14.4 69 77 12 -31 15 48 -31 9 2 -31 19 24 -31 5 26 0.05 - 61 0 0 -31 8 1 21 15 21.2 70 76 11 -31 11 24 -31 4 38 -31 15 0 -31 1 2 0.05 - 60 0 0 -31 3 10 21 15 28.2 71 76 10 -31 6 33 -30 59 47 -31 10 10 -30 56 10 0.05 - 59 0 0 -30 57 52 21 15 35.2 72 75 9 -31 1 15 -30 54 28 -31 4 52 -30 50 52 0.05 - 58 0 0 -30 52 6 21 15 42.2 73 74 8 -30 55 30 -30 48 42 -30 59 6 -30 45 6 0.05 - 57 0 0 -30 45 53 21 15 49.3 74 73 7 -30 49 17 -30 42 29 -30 52 54 -30 38 52 0.05 - 56 0 0 -30 39 12 21 15 56.5 74 71 6 -30 42 36 -30 35 48 -30 46 13 -30 32 11 0.05 - 55 0 0 -30 32 4 21 16 3.7 75 70 5 -30 35 28 -30 28 39 -30 39 6 -30 25 2 0.05 - 54 0 0 -30 24 28 21 16 10.9 76 69 5 -30 27 52 -30 21 3 -30 31 30 -30 17 26 0.05 - 53 0 0 -30 16 24 21 16 18.2 77 68 4 -30 19 49 -30 12 59 -30 23 27 -30 9 21 0.05 - 52 0 0 -30 7 53 21 16 25.5 78 66 3 -30 11 18 -30 4 28 -30 14 56 -30 0 49 0.05 - 51 0 0 -29 58 54 21 16 32.9 79 64 2 -30 2 19 -29 55 28 -30 5 58 -29 51 50 0.05 - 50 0 0 -29 49 27 21 16 40.4 80 62 1 -29 52 53 -29 46 1 -29 56 31 -29 42 22 0.05 - 49 0 0 -29 39 32 21 16 47.8 80 60 0 -29 42 58 -29 36 6 -29 46 37 -29 32 26 0.05 - 48 0 0 -29 29 9 21 16 55.3 81 58 -1 -29 32 35 -29 25 42 -29 36 15 -29 22 3 0.05 - 47 0 0 -29 18 18 21 17 2.9 82 55 -2 -29 21 44 -29 14 51 -29 25 24 -29 11 11 0.06 - 46 0 0 -29 6 58 21 17 10.5 83 51 -3 -29 10 26 -29 3 31 -29 14 6 -28 59 51 0.06 - 45 0 0 -28 55 11 21 17 18.1 84 47 -4 -28 58 38 -28 51 43 -29 2 19 -28 48 3 0.06 - 44 0 0 -28 42 55 21 17 25.8 84 41 -5 -28 46 23 -28 39 27 -28 50 4 -28 35 46 0.06 - 43 0 0 -28 30 11 21 17 33.5 85 33 -5 -28 33 40 -28 26 43 -28 37 21 -28 23 1 0.06 - 42 0 0 -28 16 59 21 17 41.3 86 23 -6 -28 20 28 -28 13 30 -28 24 10 -28 9 48 0.06 - 41 0 0 -28 3 18 21 17 49.1 86 10 -7 -28 6 47 -27 59 49 -28 10 30 -27 56 6 0.06 - 40 0 0 -27 49 9 21 17 56.9 86 353 -8 -27 52 39 -27 45 39 -27 56 22 -27 41 56 0.07 - 39 0 0 -27 34 31 21 18 4.8 86 335 -9 -27 38 1 -27 31 1 -27 41 45 -27 27 18 0.07 - 38 0 0 -27 19 25 21 18 12.7 86 319 -10 -27 22 56 -27 15 54 -27 26 40 -27 12 10 0.06 - 37 0 0 -27 3 50 21 18 20.6 86 306 -11 -27 7 21 -27 0 19 -27 11 6 -26 56 35 0.06 - 36 0 0 -26 47 47 21 18 28.6 85 296 -12 -26 51 19 -26 44 16 -26 55 4 -26 40 31 0.06 - 35 0 0 -26 31 15 21 18 36.5 84 288 -13 -26 34 47 -26 27 43 -26 38 33 -26 23 58 0.06 - 34 0 0 -26 14 15 21 18 44.6 84 283 -14 -26 17 48 -26 10 43 -26 21 34 -26 6 57 0.06 - 33 0 0 -25 56 46 21 18 52.6 83 278 -15 -26 0 20 -25 53 13 -26 4 6 -25 49 27 0.06 - 32 0 0 -25 38 49 21 19 0.7 82 275 -16 -25 42 23 -25 35 16 -25 46 10 -25 31 29 0.06 - 31 0 0 -25 20 24 21 19 8.7 81 272 -17 -25 23 58 -25 16 50 -25 27 46 -25 13 2 0.06 - 30 0 0 -25 1 30 21 19 16.9 80 270 -18 -25 5 4 -24 57 55 -25 8 53 -24 54 7 0.06 - 29 0 0 -24 42 8 21 19 25.0 79 267 -19 -24 45 43 -24 38 33 -24 49 32 -24 34 44 0.06 - 28 0 0 -24 22 17 21 19 33.1 78 266 -20 -24 25 53 -24 18 42 -24 29 42 -24 14 52 0.06 - 27 0 0 -24 1 59 21 19 41.3 77 264 -21 -24 5 35 -23 58 23 -24 9 25 -23 54 33 0.06 - 26 0 0 -23 41 12 21 19 49.4 76 263 -22 -23 44 49 -23 37 36 -23 48 40 -23 33 45 0.06 - 25 0 0 -23 19 58 21 19 57.6 75 261 -23 -23 23 35 -23 16 21 -23 27 26 -23 12 30 0.06 - 24 0 0 -22 58 16 21 20 5.8 74 260 -24 -23 1 54 -22 54 38 -23 5 46 -22 50 47 0.06 - 23 0 0 -22 36 7 21 20 13.9 73 259 -25 -22 39 45 -22 32 28 -22 43 37 -22 28 36 0.06 - 22 0 0 -22 13 30 21 20 22.1 72 258 -26 -22 17 9 -22 9 51 -22 21 2 -22 5 58 0.06 - 21 0 0 -21 50 26 21 20 30.3 71 257 -27 -21 54 6 -21 46 47 -21 57 59 -21 42 53 0.06 - 20 0 0 -21 26 56 21 20 38.4 70 256 -28 -21 30 36 -21 23 16 -21 34 30 -21 19 22 0.06 - 19 0 0 -21 2 58 21 20 46.6 69 256 -29 -21 6 39 -20 59 18 -21 10 34 -20 55 23 0.06 - 18 0 0 -20 38 35 21 20 54.7 68 255 -30 -20 42 16 -20 34 54 -20 46 11 -20 30 59 0.06 - 17 0 0 -20 13 46 21 21 2.8 67 254 -31 -20 17 27 -20 10 4 -20 21 23 -20 6 8 0.06 - 16 0 0 -19 48 31 21 21 10.9 66 254 -32 -19 52 13 -19 44 49 -19 56 9 -19 40 52 0.06 - 15 0 0 -19 22 51 21 21 18.9 65 253 -33 -19 26 33 -19 19 8 -19 30 30 -19 15 11 0.06 - 14 0 0 -18 56 46 21 21 27.0 64 252 -34 -19 0 29 -18 53 2 -19 4 26 -18 49 5 0.06 - 13 0 0 -18 30 16 21 21 35.0 63 252 -35 -18 34 0 -18 26 33 -18 37 58 -18 22 35 0.06 - 12 0 0 -18 3 23 21 21 42.9 62 251 -37 -18 7 7 -17 59 39 -18 11 6 -17 55 40 0.06 - 11 0 0 -17 36 6 21 21 50.8 61 251 -38 -17 39 51 -17 32 21 -17 43 50 -17 28 22 0.06 - 10 0 0 -17 8 26 21 21 58.7 60 250 -39 -17 12 12 -17 4 41 -17 16 11 -17 0 42 0.06 - 9 0 0 -16 40 24 21 22 6.5 59 250 -40 -16 44 10 -16 36 39 -16 48 10 -16 32 39 0.06 - 8 0 0 -16 12 0 21 22 14.2 58 249 -41 -16 15 46 -16 8 14 -16 19 47 -16 4 14 0.06 - 7 0 0 -15 43 15 21 22 21.9 56 249 -42 -15 47 2 -15 39 29 -15 51 3 -15 35 28 0.06 - 6 0 0 -15 14 9 21 22 29.5 55 249 -43 -15 17 56 -15 10 22 -15 21 58 -15 6 21 0.06 - 5 0 0 -14 44 43 21 22 37.1 54 248 -44 -14 48 31 -14 40 56 -14 52 33 -14 36 54 0.06 - 4 0 0 -14 14 58 21 22 44.6 53 248 -45 -14 18 46 -14 11 11 -14 22 49 -14 7 8 0.07 - 3 0 0 -13 44 55 21 22 51.9 52 247 -46 -13 48 43 -13 41 7 -13 52 46 -13 37 4 0.07 - 2 0 0 -13 14 34 21 22 59.2 51 247 -48 -13 18 22 -13 10 45 -13 22 25 -13 6 42 0.07 - 1 0 0 -12 43 55 21 23 6.5 50 247 -49 -12 47 44 -12 40 6 -12 51 48 -12 36 3 0.07 0 0 0 -12 13 0 21 23 13.6 49 246 -50 -12 16 50 -12 9 11 -12 20 54 -12 5 7 0.07 1 0 0 -11 41 50 21 23 20.6 48 246 -51 -11 45 40 -11 38 1 -11 49 44 -11 33 57 0.07 2 0 0 -11 10 26 21 23 27.5 46 246 -52 -11 14 16 -11 6 36 -11 18 20 -11 2 31 0.07 3 0 0 -10 38 48 21 23 34.3 45 246 -53 -10 42 38 -10 34 57 -10 46 43 -10 30 53 0.07 4 0 0 -10 6 56 21 23 40.9 44 245 -54 -10 10 47 -10 3 6 -10 14 52 - 9 59 1 0.07 5 0 0 - 9 34 53 21 23 47.5 43 245 -55 - 9 38 44 - 9 31 3 - 9 42 49 - 9 26 58 0.07 6 0 0 - 9 2 40 21 23 53.9 42 245 -57 - 9 6 30 - 8 58 49 - 9 10 36 - 8 54 43 0.07 7 0 0 - 8 30 16 21 24 0.2 41 245 -58 - 8 34 7 - 8 26 25 - 8 38 12 - 8 22 19 0.07 8 0 0 - 7 57 43 21 24 6.4 40 245 -59 - 8 1 34 - 7 53 52 - 8 5 40 - 7 49 46 0.07 9 0 0 - 7 25 2 21 24 12.4 38 244 -60 - 7 28 53 - 7 21 10 - 7 32 59 - 7 17 4 0.07 10 0 0 - 6 52 14 21 24 18.3 37 244 -61 - 6 56 5 - 6 48 22 - 7 0 11 - 6 44 16 0.07 11 0 0 - 6 19 19 21 24 24.0 36 244 -62 - 6 23 11 - 6 15 28 - 6 27 17 - 6 11 22 0.07 12 0 0 - 5 46 20 21 24 29.6 35 244 -64 - 5 50 12 - 5 42 29 - 5 54 18 - 5 38 22 0.07 13 0 0 - 5 13 17 21 24 35.1 34 244 -65 - 5 17 9 - 5 9 26 - 5 21 15 - 5 5 19 0.07 14 0 0 - 4 40 11 21 24 40.3 33 244 -66 - 4 44 3 - 4 36 19 - 4 48 9 - 4 32 13 0.07 15 0 0 - 4 7 3 21 24 45.4 31 244 -67 - 4 10 55 - 4 3 11 - 4 15 1 - 3 59 5 0.07 16 0 0 - 3 33 54 21 24 50.4 30 243 -68 - 3 37 45 - 3 30 2 - 3 41 52 - 3 25 56 0.07 17 0 0 - 3 0 45 21 24 55.2 29 243 -69 - 3 4 36 - 2 56 53 - 3 8 43 - 2 52 47 0.07 18 0 0 - 2 27 37 21 24 59.8 28 243 -70 - 2 31 29 - 2 23 45 - 2 35 35 - 2 19 39 0.08 19 0 0 - 1 54 31 21 25 4.2 27 243 -72 - 1 58 23 - 1 50 40 - 2 2 29 - 1 46 34 0.08 20 0 0 - 1 21 29 21 25 8.4 26 243 -73 - 1 25 20 - 1 17 37 - 1 29 26 - 1 13 31 0.08 21 0 0 - 0 48 30 21 25 12.5 25 243 -74 - 0 52 22 - 0 44 39 - 0 56 28 - 0 40 33 0.08 22 0 0 - 0 15 37 21 25 16.4 23 243 -75 - 0 19 28 - 0 11 46 - 0 23 34 - 0 7 40 0.08 23 0 0 0 17 10 21 25 20.1 22 243 -76 0 13 19 0 21 1 0 9 13 0 25 7 0.08 24 0 0 0 49 50 21 25 23.7 21 243 -77 0 45 59 0 53 41 0 41 54 0 57 46 0.08 25 0 0 1 22 22 21 25 27.0 20 243 -79 1 18 32 1 26 13 1 14 26 1 30 18 0.08 26 0 0 1 54 45 21 25 30.2 19 243 -80 1 50 55 1 58 35 1 46 50 2 2 40 0.08 27 0 0 2 26 58 21 25 33.1 18 243 -81 2 23 8 2 30 48 2 19 4 2 34 53 0.08 28 0 0 2 59 1 21 25 35.9 17 243 -82 2 55 11 3 2 50 2 51 6 3 6 55 0.08 29 0 0 3 30 51 21 25 38.5 15 243 -83 3 27 2 3 34 41 3 22 58 3 38 45 0.08 30 0 0 4 2 29 21 25 40.9 14 243 -84 3 58 40 4 6 19 3 54 37 4 10 22 0.08 31 0 0 4 33 54 21 25 43.2 13 243 -85 4 30 5 4 37 43 4 26 2 4 41 46 0.08 32 0 0 5 5 5 21 25 45.2 12 244 -86 5 1 16 5 8 53 4 57 13 5 12 56 0.09 33 0 0 5 36 1 21 25 47.1 11 244 -87 5 32 13 5 39 49 5 28 10 5 43 51 0.09 34 0 0 6 6 41 21 25 48.7 10 244 -88 6 2 53 6 10 28 5 58 51 6 14 31 0.09 35 0 0 6 37 4 21 25 50.2 9 244 -89 6 33 17 6 40 52 6 29 15 6 44 53 0.09 36 0 0 7 7 11 21 25 51.5 7 244 -89 7 3 24 7 10 58 6 59 22 7 14 59 0.09 37 0 0 7 36 59 21 25 52.6 6 244 -88 7 33 13 7 40 46 7 29 12 7 44 47 0.10 38 0 0 8 6 30 21 25 53.6 5 244 -87 8 2 44 8 10 16 7 58 43 8 14 16 0.10 39 0 0 8 35 41 21 25 54.3 4 244 -86 8 31 55 8 39 27 8 27 55 8 43 27 0.11 40 0 0 9 4 32 21 25 54.9 3 245 -84 9 0 47 9 8 18 8 56 47 9 12 17 0.13 41 0 0 9 33 4 21 25 55.3 2 245 -83 9 29 19 9 36 48 9 25 20 9 40 48 0.16 42 0 0 10 1 14 21 25 55.5 1 245 -82 9 57 30 10 4 58 9 53 31 10 8 57 0.27 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 327-187928 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 42 52.2139 DE: -24 38 03.424 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 42 52.2136 DE: -24 38 03.424 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3545) Gaffey asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.37730 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 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): 0.018", 0.003", 81.9° remarks: * orbital elements for (3545)Gaffey : Mean anomaly = 357.9162311791 deg Arg. of pericenter = 255.7950462758 deg Long. of node = 61.2319054763 deg Inclination = 2.9713854878 deg Eccentricity = 0.0551555650 Semimajor axis = 2.8696791288 AU Perihelion dist = 2.7114003550 AU Mag: H = 12.35, G = 0.15 Epoch of elements : MJD 60590.88751000 TDT (2024 Oct 07.8875) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr24,0.93,2024,10,7,21.300246,0.014327,-0.051679,7.325089,1.887243,0.005593,0.001046,0.000000,0.000000 -40.4194,-24.5767,-142.61,-5.95,False UCAC4 327-187928,19.71450389,-24.6342843,12.22,11.85,11.65,0.0,0,K,19.73948306,-24.5767273,5.59,5.34,0,0,0 3545,Gaffey,17.43,12.442,2.3773,0,0,1.987,6.99,,1.2,0 0,357.7363,2024,10,7,255.7950,61.2319,2.9714,0.05516,2.86968,2.71140,12.34,5.0,0.15 1.532,0.0180,0.0033,82,0.0039,Known errors,0.93,0,-1,-1 20241007_187928,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org