IOTA/IOTA-ES occultation update for (1960) Guisan / UCAC4 303-110671 event on 2024 Oct 20, 16:13 UT Visible from Summary ------- On 2024 Oct 20 UT, the 27.089 km diameter asteroid (1960) Guisan will occult a 11.7 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.39 mag to 17.06 mag (the magnitude of the asteroid) for at most 0.690 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 Oct 20, 16:10 - 2024 Oct 20, 16:16 * geocentric midpoint of event [JD]: 2460604.17597242 * magnitude of target star: 11.68 * magnitude drop [mag]: 5.39 * estimated maximum duration [s]: 0.690 * Moon: 85 % sunlit, 174° distance * Sun: 50° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 101°) * approx speed of asteroid's shadow [km/s]: 39.3496 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 303-110671 by 1960 Guisan on 2024 Oct 20 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 - 95 0 0 18 23 7 16 10 49.4 1 121 50 18 14 8 18 32 7 18 11 3 18 35 12 .... - 94 0 0 17 48 13 16 10 49.5 2 122 51 17 39 14 17 57 13 17 36 9 18 0 18 -0.10 - 93 0 0 17 13 15 16 10 49.6 3 122 52 17 4 16 17 22 14 17 1 12 17 25 19 -0.18 - 92 0 0 16 38 14 16 10 49.8 4 122 53 16 29 16 16 47 13 16 26 11 16 50 18 -0.22 - 91 0 0 16 3 12 16 10 50.1 5 123 54 15 54 14 16 12 11 15 51 9 16 15 16 -0.24 - 90 0 0 15 28 9 16 10 50.4 6 123 55 15 19 11 15 37 7 15 16 7 15 40 12 -0.25 - 89 0 0 14 53 7 16 10 50.8 7 123 56 14 44 9 15 2 5 14 41 5 15 5 9 -0.26 - 88 0 0 14 18 6 16 10 51.2 8 123 57 14 9 9 14 27 3 14 6 5 14 30 8 -0.26 - 87 0 0 13 43 8 16 10 51.8 10 124 58 13 34 12 13 52 5 13 31 8 13 55 9 -0.27 - 86 0 0 13 8 14 16 10 52.3 11 124 59 12 59 19 13 17 10 12 56 15 13 20 14 -0.27 - 85 0 0 12 33 25 16 10 53.0 12 124 60 12 24 30 12 42 21 12 21 27 12 45 25 -0.28 - 84 0 0 11 58 43 16 10 53.7 13 124 62 11 49 48 12 7 37 11 46 45 12 10 41 -0.28 - 83 0 0 11 24 7 16 10 54.5 14 125 63 11 15 14 11 33 1 11 12 11 11 36 4 -0.28 - 82 0 0 10 49 40 16 10 55.4 15 125 64 10 40 47 10 58 33 10 37 45 11 1 36 -0.28 - 81 0 0 10 15 22 16 10 56.3 16 125 65 10 6 30 10 24 14 10 3 28 10 27 17 -0.28 - 80 0 0 9 41 15 16 10 57.3 17 125 66 9 32 24 9 50 6 9 29 22 9 53 8 -0.29 - 79 0 0 9 7 19 16 10 58.3 19 125 67 8 58 29 9 16 9 8 55 27 9 19 11 -0.29 - 78 0 0 8 33 35 16 10 59.4 20 126 68 8 24 46 8 42 25 8 21 45 8 45 26 -0.29 - 77 0 0 8 0 5 16 11 0.6 21 126 69 7 51 18 8 8 54 7 48 17 8 11 55 -0.29 - 76 0 0 7 26 50 16 11 1.8 22 126 70 7 18 3 7 35 37 7 15 3 7 38 38 -0.29 - 75 0 0 6 53 50 16 11 3.1 23 126 71 6 45 5 7 2 36 6 42 4 7 5 37 -0.29 - 74 0 0 6 21 7 16 11 4.5 24 126 71 6 12 22 6 29 52 6 9 23 6 32 52 -0.29 - 73 0 0 5 48 41 16 11 5.9 25 127 72 5 39 57 5 57 24 5 36 58 6 0 24 -0.29 - 72 0 0 5 16 33 16 11 7.3 27 127 73 5 7 51 5 25 15 5 4 52 5 28 15 -0.29 - 71 0 0 4 44 44 16 11 8.9 28 127 74 4 36 3 4 53 25 4 33 5 4 56 24 -0.30 - 70 0 0 4 13 15 16 11 10.5 29 127 75 4 4 35 4 21 55 4 1 37 4 24 53 -0.30 - 69 0 0 3 42 7 16 11 12.1 30 127 75 3 33 28 3 50 46 3 30 31 3 53 43 -0.30 - 68 0 0 3 11 20 16 11 13.8 31 128 76 3 2 43 3 19 57 2 59 46 3 22 55 -0.30 - 67 0 0 2 40 55 16 11 15.5 32 128 77 2 32 20 2 49 32 2 29 23 2 52 29 -0.30 - 66 0 0 2 10 54 16 11 17.3 33 128 77 2 2 20 2 19 29 1 59 23 2 22 25 -0.30 - 65 0 0 1 41 16 16 11 19.2 34 128 78 1 32 43 1 49 49 1 29 47 1 52 46 -0.30 - 64 0 0 1 12 2 16 11 21.1 35 128 78 1 3 31 1 20 34 1 0 35 1 23 30 -0.30 - 63 0 0 0 43 14 16 11 23.0 36 128 78 0 34 43 0 51 44 0 31 49 0 54 39 -0.30 - 62 0 0 0 14 51 16 11 25.0 38 129 78 0 6 22 0 23 20 0 3 27 0 26 14 -0.30 - 61 0 0 - 0 13 7 16 11 27.0 39 129 78 - 0 21 34 - 0 4 39 - 0 24 28 - 0 1 45 -0.30 - 60 0 0 - 0 40 37 16 11 29.1 40 129 78 - 0 49 3 - 0 32 10 - 0 51 56 - 0 29 17 -0.30 - 59 0 0 - 1 7 40 16 11 31.2 41 129 78 - 1 16 5 - 0 59 15 - 1 18 58 - 0 56 22 -0.30 - 58 0 0 - 1 34 16 16 11 33.3 42 130 77 - 1 42 39 - 1 25 52 - 1 45 31 - 1 22 59 -0.30 - 57 0 0 - 2 0 23 16 11 35.5 43 130 77 - 2 8 45 - 1 52 1 - 2 11 37 - 1 49 9 -0.30 - 56 0 0 - 2 26 2 16 11 37.7 44 130 77 - 2 34 23 - 2 17 41 - 2 37 14 - 2 14 50 -0.30 - 55 0 0 - 2 51 12 16 11 40.0 45 130 76 - 2 59 31 - 2 42 53 - 3 2 22 - 2 40 2 -0.30 - 54 0 0 - 3 15 53 16 11 42.3 46 131 75 - 3 24 11 - 3 7 35 - 3 27 1 - 3 4 44 -0.30 - 53 0 0 - 3 40 4 16 11 44.6 47 131 75 - 3 48 20 - 3 31 47 - 3 51 10 - 3 28 57 -0.30 - 52 0 0 - 4 3 45 16 11 47.0 48 131 74 - 4 12 0 - 3 55 30 - 4 14 49 - 3 52 40 -0.30 - 51 0 0 - 4 26 56 16 11 49.4 49 132 73 - 4 35 9 - 4 18 42 - 4 37 58 - 4 15 52 -0.30 - 50 0 0 - 4 49 36 16 11 51.8 50 132 72 - 4 57 48 - 4 41 23 - 5 0 37 - 4 38 34 -0.30 - 49 0 0 - 5 11 45 16 11 54.3 51 132 72 - 5 19 56 - 5 3 34 - 5 22 44 - 5 0 45 -0.31 - 48 0 0 - 5 33 23 16 11 56.7 52 133 71 - 5 41 33 - 5 25 13 - 5 44 20 - 5 22 25 -0.31 - 47 0 0 - 5 54 30 16 11 59.2 53 133 70 - 6 2 38 - 5 46 21 - 6 5 26 - 5 43 34 -0.31 - 46 0 0 - 6 15 5 16 12 1.8 54 134 69 - 6 23 12 - 6 6 58 - 6 25 59 - 6 4 11 -0.31 - 45 0 0 - 6 35 9 16 12 4.3 55 134 68 - 6 43 15 - 6 27 3 - 6 46 1 - 6 24 16 -0.31 - 44 0 0 - 6 54 40 16 12 6.9 56 135 67 - 7 2 45 - 6 46 36 - 7 5 31 - 6 43 49 -0.31 - 43 0 0 - 7 13 40 16 12 9.5 57 136 66 - 7 21 43 - 7 5 36 - 7 24 29 - 7 2 51 -0.31 - 42 0 0 - 7 32 8 16 12 12.1 58 136 65 - 7 40 10 - 7 24 5 - 7 42 55 - 7 21 20 -0.31 - 41 0 0 - 7 50 3 16 12 14.7 59 137 64 - 7 58 4 - 7 42 1 - 8 0 48 - 7 39 16 -0.31 - 40 0 0 - 8 7 25 16 12 17.4 59 138 63 - 8 15 25 - 7 59 25 - 8 18 9 - 7 56 41 -0.31 - 39 0 0 - 8 24 15 16 12 20.0 60 138 62 - 8 32 14 - 8 16 16 - 8 34 58 - 8 13 32 -0.31 - 38 0 0 - 8 40 33 16 12 22.7 61 139 61 - 8 48 31 - 8 32 35 - 8 51 14 - 8 29 51 -0.31 - 37 0 0 - 8 56 18 16 12 25.4 62 140 60 - 9 4 14 - 8 48 21 - 9 6 58 - 8 45 37 -0.31 - 36 0 0 - 9 11 30 16 12 28.1 63 141 59 - 9 19 26 - 9 3 34 - 9 22 8 - 9 0 51 -0.31 - 35 0 0 - 9 26 9 16 12 30.8 64 142 59 - 9 34 4 - 9 18 14 - 9 36 46 - 9 15 32 -0.31 - 34 0 0 - 9 40 16 16 12 33.6 64 144 58 - 9 48 9 - 9 32 22 - 9 50 52 - 9 29 39 -0.31 - 33 0 0 - 9 53 49 16 12 36.3 65 145 57 -10 1 42 - 9 45 56 -10 4 24 - 9 43 14 -0.31 - 32 0 0 -10 6 50 16 12 39.1 66 146 56 -10 14 42 - 9 58 58 -10 17 23 - 9 56 16 -0.31 - 31 0 0 -10 19 18 16 12 41.8 67 148 55 -10 27 9 -10 11 26 -10 29 50 -10 8 45 -0.31 - 30 0 0 -10 31 12 16 12 44.6 67 149 54 -10 39 2 -10 23 22 -10 41 43 -10 20 41 -0.31 - 29 0 0 -10 42 34 16 12 47.4 68 151 53 -10 50 23 -10 34 45 -10 53 4 -10 32 3 -0.31 - 28 0 0 -10 53 23 16 12 50.1 69 153 52 -11 1 11 -10 45 34 -11 3 52 -10 42 53 -0.31 - 27 0 0 -11 3 39 16 12 52.9 69 155 51 -11 11 26 -10 55 51 -11 14 7 -10 53 10 -0.31 - 26 0 0 -11 13 21 16 12 55.7 70 157 50 -11 21 9 -11 5 34 -11 23 49 -11 2 54 -0.31 - 25 0 0 -11 22 31 16 12 58.5 70 159 49 -11 30 18 -11 14 44 -11 32 58 -11 12 4 -0.31 - 24 0 0 -11 31 8 16 13 1.3 71 161 48 -11 38 54 -11 23 22 -11 41 34 -11 20 42 -0.31 - 23 0 0 -11 39 12 16 13 4.1 71 164 47 -11 46 57 -11 31 26 -11 49 37 -11 28 47 -0.31 - 22 0 0 -11 46 43 16 13 6.9 72 166 46 -11 54 28 -11 38 58 -11 57 7 -11 36 18 -0.31 - 21 0 0 -11 53 41 16 13 9.7 72 169 45 -12 1 25 -11 45 56 -12 4 4 -11 43 17 -0.31 - 20 0 0 -12 0 6 16 13 12.5 72 172 44 -12 7 49 -11 52 22 -12 10 28 -11 49 42 -0.31 - 19 0 0 -12 5 58 16 13 15.3 72 175 43 -12 13 41 -11 58 14 -12 16 20 -11 55 35 -0.31 - 18 0 0 -12 11 17 16 13 18.1 73 177 42 -12 19 0 -12 3 33 -12 21 38 -12 0 55 -0.31 - 17 0 0 -12 16 3 16 13 21.0 73 180 41 -12 23 46 -12 8 20 -12 26 24 -12 5 41 -0.31 - 16 0 0 -12 20 16 16 13 23.8 73 183 40 -12 27 58 -12 12 34 -12 30 37 -12 9 55 -0.31 - 15 0 0 -12 23 57 16 13 26.6 73 186 39 -12 31 39 -12 16 14 -12 34 17 -12 13 36 -0.31 - 14 0 0 -12 27 4 16 13 29.4 73 189 38 -12 34 46 -12 19 22 -12 37 24 -12 16 43 -0.31 - 13 0 0 -12 29 39 16 13 32.2 72 192 37 -12 37 20 -12 21 57 -12 39 58 -12 19 18 -0.31 - 12 0 0 -12 31 40 16 13 34.9 72 195 36 -12 39 22 -12 23 59 -12 42 0 -12 21 20 -0.31 - 11 0 0 -12 33 9 16 13 37.7 72 198 35 -12 40 51 -12 25 28 -12 43 29 -12 22 49 -0.31 - 10 0 0 -12 34 5 16 13 40.5 72 200 34 -12 41 47 -12 26 24 -12 44 25 -12 23 45 -0.31 - 9 0 0 -12 34 28 16 13 43.3 71 203 33 -12 42 10 -12 26 47 -12 44 48 -12 24 8 -0.31 - 8 0 0 -12 34 19 16 13 46.1 71 205 32 -12 42 0 -12 26 37 -12 44 38 -12 23 59 -0.31 - 7 0 0 -12 33 36 16 13 48.8 70 208 31 -12 41 17 -12 25 55 -12 43 56 -12 23 16 -0.31 - 6 0 0 -12 32 21 16 13 51.6 70 210 30 -12 40 2 -12 24 39 -12 42 40 -12 22 1 -0.31 - 5 0 0 -12 30 33 16 13 54.3 69 212 29 -12 38 14 -12 22 51 -12 40 52 -12 20 12 -0.31 - 4 0 0 -12 28 12 16 13 57.1 69 214 28 -12 35 53 -12 20 29 -12 38 31 -12 17 51 -0.31 - 3 0 0 -12 25 18 16 13 59.8 68 215 27 -12 33 0 -12 17 35 -12 35 38 -12 14 57 -0.31 - 2 0 0 -12 21 51 16 14 2.5 68 217 26 -12 29 33 -12 14 8 -12 32 11 -12 11 30 -0.31 - 1 0 0 -12 17 51 16 14 5.2 67 219 25 -12 25 34 -12 10 8 -12 28 12 -12 7 30 -0.31 0 0 0 -12 13 19 16 14 7.9 66 220 24 -12 21 2 -12 5 36 -12 23 40 -12 2 57 -0.31 1 0 0 -12 8 13 16 14 10.6 66 222 23 -12 15 57 -12 0 30 -12 18 35 -11 57 51 -0.31 2 0 0 -12 2 35 16 14 13.3 65 223 22 -12 10 19 -11 54 51 -12 12 58 -11 52 12 -0.31 3 0 0 -11 56 24 16 14 15.9 64 224 21 -12 4 8 -11 48 40 -12 6 47 -11 46 1 -0.31 4 0 0 -11 49 40 16 14 18.6 63 225 20 -11 57 25 -11 41 55 -12 0 4 -11 39 16 -0.31 5 0 0 -11 42 23 16 14 21.2 63 226 19 -11 50 8 -11 34 38 -11 52 48 -11 31 58 -0.31 6 0 0 -11 34 34 16 14 23.8 62 227 18 -11 42 19 -11 26 48 -11 44 59 -11 24 8 -0.31 7 0 0 -11 26 11 16 14 26.4 61 228 17 -11 33 57 -11 18 24 -11 36 37 -11 15 44 -0.31 8 0 0 -11 17 15 16 14 29.0 60 228 16 -11 25 2 -11 9 28 -11 27 42 -11 6 48 -0.31 9 0 0 -11 7 47 16 14 31.6 59 229 15 -11 15 34 -10 59 59 -11 18 14 -10 57 19 -0.31 10 0 0 -10 57 46 16 14 34.1 58 230 14 -11 5 34 -10 49 57 -11 8 14 -10 47 16 -0.31 11 0 0 -10 47 11 16 14 36.6 57 230 13 -10 55 0 -10 39 22 -10 57 41 -10 36 41 -0.31 12 0 0 -10 36 4 16 14 39.2 57 231 12 -10 43 54 -10 28 14 -10 46 35 -10 25 33 -0.31 13 0 0 -10 24 24 16 14 41.7 56 232 11 -10 32 15 -10 16 33 -10 34 56 -10 13 52 -0.31 14 0 0 -10 12 11 16 14 44.1 55 232 10 -10 20 3 -10 4 20 -10 22 44 -10 1 38 -0.31 15 0 0 - 9 59 26 16 14 46.6 54 232 9 -10 7 18 - 9 51 33 -10 10 0 - 9 48 51 -0.31 16 0 0 - 9 46 7 16 14 49.0 53 233 8 - 9 54 0 - 9 38 14 - 9 56 42 - 9 35 31 -0.31 17 0 0 - 9 32 16 16 14 51.4 52 233 7 - 9 40 10 - 9 24 22 - 9 42 52 - 9 21 39 -0.31 18 0 0 - 9 17 52 16 14 53.8 51 234 6 - 9 25 47 - 9 9 57 - 9 28 30 - 9 7 13 -0.31 19 0 0 - 9 2 55 16 14 56.1 50 234 5 - 9 10 51 - 8 54 59 - 9 13 34 - 8 52 15 -0.31 20 0 0 - 8 47 26 16 14 58.5 49 234 4 - 8 55 23 - 8 39 28 - 8 58 6 - 8 36 45 -0.31 21 0 0 - 8 31 24 16 15 0.8 48 234 3 - 8 39 22 - 8 23 26 - 8 42 6 - 8 20 41 -0.31 22 0 0 - 8 14 50 16 15 3.0 47 235 2 - 8 22 49 - 8 6 50 - 8 25 33 - 8 4 6 -0.31 23 0 0 - 7 57 43 16 15 5.3 46 235 1 - 8 5 43 - 7 49 42 - 8 8 28 - 7 46 57 -0.31 24 0 0 - 7 40 4 16 15 7.5 45 235 0 - 7 48 5 - 7 32 2 - 7 50 50 - 7 29 17 -0.31 25 0 0 - 7 21 53 16 15 9.7 44 235 -1 - 7 29 55 - 7 13 50 - 7 32 40 - 7 11 4 -0.31 26 0 0 - 7 3 9 16 15 11.8 43 236 -2 - 7 11 13 - 6 55 5 - 7 13 59 - 6 52 19 -0.31 27 0 0 - 6 43 54 16 15 13.9 42 236 -3 - 6 51 59 - 6 35 49 - 6 54 45 - 6 33 2 -0.31 28 0 0 - 6 24 7 16 15 16.0 41 236 -4 - 6 32 13 - 6 16 0 - 6 35 0 - 6 13 14 -0.31 29 0 0 - 6 3 48 16 15 18.1 40 236 -5 - 6 11 56 - 5 55 41 - 6 14 43 - 5 52 53 -0.31 30 0 0 - 5 42 58 16 15 20.1 39 236 -6 - 5 51 7 - 5 34 49 - 5 53 55 - 5 32 2 -0.31 31 0 0 - 5 21 37 16 15 22.0 38 236 -7 - 5 29 47 - 5 13 27 - 5 32 35 - 5 10 39 -0.31 32 0 0 - 4 59 45 16 15 24.0 37 236 -9 - 5 7 56 - 4 51 33 - 5 10 45 - 4 48 45 -0.31 33 0 0 - 4 37 22 16 15 25.9 36 236 -10 - 4 45 34 - 4 29 9 - 4 48 23 - 4 26 20 -0.31 34 0 0 - 4 14 28 16 15 27.7 35 236 -11 - 4 22 42 - 4 6 14 - 4 25 31 - 4 3 24 -0.31 35 0 0 - 3 51 4 16 15 29.5 34 237 -12 - 3 59 20 - 3 42 49 - 4 2 10 - 3 39 59 -0.31 36 0 0 - 3 27 11 16 15 31.3 33 237 -13 - 3 35 27 - 3 18 54 - 3 38 18 - 3 16 3 -0.31 37 0 0 - 3 2 47 16 15 33.0 32 237 -14 - 3 11 5 - 2 54 29 - 3 13 56 - 2 51 38 -0.31 38 0 0 - 2 37 55 16 15 34.7 31 237 -15 - 2 46 14 - 2 29 35 - 2 49 5 - 2 26 43 -0.31 39 0 0 - 2 12 33 16 15 36.3 30 237 -16 - 2 20 54 - 2 4 12 - 2 23 46 - 2 1 20 -0.31 40 0 0 - 1 46 43 16 15 37.9 29 237 -17 - 1 55 5 - 1 38 20 - 1 57 57 - 1 35 28 -0.31 41 0 0 - 1 20 25 16 15 39.4 28 237 -18 - 1 28 49 - 1 12 1 - 1 31 41 - 1 9 8 -0.31 42 0 0 - 0 53 39 16 15 40.9 27 237 -19 - 1 2 4 - 0 45 14 - 1 4 57 - 0 42 20 -0.31 43 0 0 - 0 26 26 16 15 42.4 25 237 -20 - 0 34 53 - 0 17 59 - 0 37 46 - 0 15 5 -0.31 44 0 0 0 1 14 16 15 43.7 24 237 -21 - 0 7 14 0 9 42 - 0 10 8 0 12 36 -0.31 45 0 0 0 29 19 16 15 45.1 23 237 -22 0 20 50 0 37 49 0 17 56 0 40 44 -0.31 46 0 0 0 57 51 16 15 46.3 22 237 -24 0 49 20 1 6 22 0 46 25 1 9 17 -0.31 47 0 0 1 26 47 16 15 47.5 21 237 -25 1 18 15 1 35 19 1 15 20 1 38 15 -0.31 48 0 0 1 56 8 16 15 48.7 20 238 -26 1 47 35 2 4 42 1 44 39 2 7 38 -0.31 49 0 0 2 25 52 16 15 49.8 19 238 -27 2 17 18 2 34 28 2 14 22 2 37 24 -0.31 50 0 0 2 56 0 16 15 50.8 18 238 -28 2 47 24 3 4 37 2 44 27 3 7 34 -0.31 51 0 0 3 26 30 16 15 51.8 17 238 -29 3 17 53 3 35 8 3 14 56 3 38 5 -0.31 52 0 0 3 57 22 16 15 52.7 15 238 -30 3 48 43 4 6 1 3 45 46 4 8 59 -0.31 53 0 0 4 28 35 16 15 53.6 14 238 -31 4 19 55 4 37 15 4 16 57 4 40 13 -0.31 54 0 0 5 0 7 16 15 54.4 13 238 -32 4 51 26 5 8 49 4 48 28 5 11 48 -0.31 55 0 0 5 31 59 16 15 55.1 12 238 -33 5 23 17 5 40 42 5 20 18 5 43 41 -0.31 56 0 0 6 4 10 16 15 55.8 11 238 -34 5 55 26 6 12 54 5 52 27 6 15 54 -0.31 57 0 0 6 36 38 16 15 56.4 10 238 -35 6 27 53 6 45 23 6 24 54 6 48 23 -0.31 58 0 0 7 9 23 16 15 56.9 9 239 -36 7 0 37 7 18 9 6 57 37 7 21 10 -0.31 59 0 0 7 42 24 16 15 57.4 8 239 -37 7 33 37 7 51 11 7 30 36 7 54 12 -0.31 60 0 0 8 15 39 16 15 57.8 6 239 -39 8 6 51 8 24 28 8 3 51 8 27 29 -0.31 61 0 0 8 49 9 16 15 58.2 5 239 -40 8 40 20 8 57 58 8 37 19 9 1 0 -0.31 62 0 0 9 22 51 16 15 58.4 4 239 -41 9 14 2 9 31 42 9 11 0 9 34 44 -0.31 63 0 0 9 56 46 16 15 58.6 3 239 -42 9 47 55 10 5 37 9 44 53 10 8 40 -0.31 64 0 0 10 30 51 16 15 58.8 2 240 -43 10 22 0 10 39 44 10 18 57 10 42 46 -0.30 65 0 0 11 5 7 16 15 58.9 1 240 -44 10 56 14 11 14 0 10 53 12 11 17 3 -0.30 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 303-110671 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 01 46.1704 DE: -29 28 57.898 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 01 46.1704 DE: -29 28 57.898 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.7 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1960) Guisan asteroid class: approx. diameter [km]: 27 approx. diameter ["]: 0.014 distance from Earth [AU]: 2.72170 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 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): 0.011", 0.002", 101.287° remarks: * orbital elements for (1960)Guisan : Mean anomaly = 353.8716452666 deg Arg. of pericenter = 263.4410544107 deg Long. of node = 22.1429600568 deg Inclination = 8.4750177805 deg Eccentricity = 0.1222873704 Semimajor axis = 2.5266772170 AU Perihelion dist = 2.2176965042 AU Mag: H = 12.15, G = 0.15 Epoch of elements : MJD 60603.67597225 TDT (2024 Oct 20.6760) ------ occelmnt file for Occult BEGIN ----------------------------------- <Occultations> <Event> <Elements>JPL#552023Apr24,0.69,2024,10,20,16.223338,0.020912,0.296482,22.151137,-1.615695,0.004163,-0.000826,-0.000001,0.000000</Elements> <Earth>-17.1327,-29.5196,-67.18,-10.68,False</Earth> <Star>UCAC4 303-110671,17.02949184,-29.4827496,12.37,11.68,11.31,0.0,0,,17.05534843,-29.5195512,5.39,5.31,0,0,0</Star> <Object>1960,Guisan,17.06,27.089,2.7217,0,0,5.484,-5.21,,1.4,0</Object> <Orbit>0,353.7058,2024,10,20,263.4411,22.1430,8.4750,0.12229,2.52668,2.21770,12.15,5.0,0.15</Orbit> <Errors>1.171,0.0110,0.0019,101,0.0024,Known errors,1.31,0,-1,-1</Errors> <ID>20241020_110671,60140.65</ID> </Event> </Occultations> ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:33 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org