IOTA/IOTA-ES occultation update for (488) Kreusa / UCAC4 549-014159 event on 2023 Aug 17, 20:45 UT Visible from China Summary ------- On 2023 Aug 17 UT, the 156.8 km diameter asteroid (488) Kreusa will occult a 12.1 mag star in the constellation Taurus for observers along a path across China. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.07 mag to 14.00 mag (the magnitude of the asteroid) for at most 5.390 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: 2023 Aug 17, 20:42 - 2023 Aug 17, 20:48 * geocentric midpoint of event [JD]: 2460174.36478396 * magnitude of target star: 12.11 * magnitude drop [mag]: 2.07 * estimated maximum duration [s]: 5.390 * Moon: 2 % sunlit, 79° distance * Sun: 64° distance * rough path description: China The occultation path -------------------- * approximate projected width [km]: 188 * 1 sigma uncertainty interval [path widths]: +/- 0.21 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.014) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.013", 75°) * approx speed of asteroid's shadow [km/s]: 29.0966 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 549-014159 by 488 Kreusa on 2023 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 64 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 25 55 39 .... 65 0 0 24 58 26 20 42 15.1 1 69 -49 24 3 31 25 54 0 23 40 30 26 17 40 .... 66 0 0 25 20 31 20 42 15.1 2 69 -49 24 25 30 26 16 10 24 2 27 26 39 52 -0.57 67 0 0 25 42 46 20 42 15.3 3 69 -48 24 47 40 26 38 31 24 24 35 27 2 16 -0.61 68 0 0 26 5 13 20 42 15.6 4 70 -47 25 10 1 27 1 3 24 46 54 27 24 50 -0.63 69 0 0 26 27 50 20 42 15.9 5 70 -46 25 32 33 27 23 45 25 9 24 27 47 35 -0.64 70 0 0 26 50 36 20 42 16.3 5 71 -46 25 55 14 27 46 37 25 32 3 28 10 28 -0.64 71 0 0 27 13 31 20 42 16.7 6 71 -45 26 18 5 28 9 37 25 54 51 28 33 31 -0.65 72 0 0 27 36 35 20 42 17.3 7 72 -44 26 41 4 28 32 46 26 17 48 28 56 42 -0.65 73 0 0 27 59 46 20 42 17.9 8 72 -43 27 4 10 28 56 2 26 40 53 29 20 0 -0.65 74 0 0 28 23 5 20 42 18.6 9 73 -43 27 27 25 29 19 25 27 4 6 29 43 25 -0.66 75 0 0 28 46 30 20 42 19.3 10 73 -42 27 50 45 29 42 54 27 27 24 30 6 56 -0.66 76 0 0 29 10 1 20 42 20.2 11 74 -41 28 14 12 30 6 29 27 50 49 30 30 33 -0.66 77 0 0 29 33 37 20 42 21.1 12 74 -40 28 37 44 30 30 9 28 14 20 30 54 14 -0.66 78 0 0 29 57 17 20 42 22.0 13 75 -39 29 1 21 30 53 53 28 37 55 31 18 0 -0.66 79 0 0 30 21 1 20 42 23.1 14 75 -39 29 25 2 31 17 41 29 1 35 31 41 50 -0.66 80 0 0 30 44 48 20 42 24.2 15 76 -38 29 48 46 31 41 32 29 25 17 32 5 42 -0.66 81 0 0 31 8 39 20 42 25.4 16 76 -37 30 12 32 32 5 26 29 49 3 32 29 37 -0.66 82 0 0 31 32 31 20 42 26.6 17 77 -36 30 36 21 32 29 21 30 12 50 32 53 34 -0.66 83 0 0 31 56 24 20 42 27.9 18 78 -35 31 0 12 32 53 17 30 36 40 33 17 31 -0.67 84 0 0 32 20 18 20 42 29.3 19 78 -34 31 24 3 33 17 14 31 0 30 33 41 29 -0.67 85 0 0 32 44 12 20 42 30.7 20 79 -33 31 47 55 33 41 10 31 24 21 34 5 26 -0.67 86 0 0 33 8 5 20 42 32.2 21 79 -33 32 11 46 34 5 5 31 48 11 34 29 22 -0.67 87 0 0 33 31 57 20 42 33.7 21 80 -32 32 35 36 34 28 59 32 12 0 34 53 17 -0.67 88 0 0 33 55 47 20 42 35.3 22 81 -31 32 59 24 34 52 51 32 35 48 35 17 9 -0.67 89 0 0 34 19 34 20 42 36.9 23 81 -30 33 23 10 35 16 39 32 59 33 35 40 59 -0.67 90 0 0 34 43 18 20 42 38.6 24 82 -29 33 46 53 35 40 24 33 23 16 36 4 44 -0.67 91 0 0 35 6 58 20 42 40.4 25 83 -28 34 10 32 36 4 5 33 46 54 36 28 26 -0.67 92 0 0 35 30 34 20 42 42.2 26 83 -27 34 34 7 36 27 42 34 10 29 36 52 2 -0.67 93 0 0 35 54 4 20 42 44.0 27 84 -27 34 57 37 36 51 13 34 33 59 37 15 33 -0.67 94 0 0 36 17 29 20 42 45.9 28 85 -26 35 21 2 37 14 38 34 57 23 37 38 58 -0.67 95 0 0 36 40 47 20 42 47.9 28 86 -25 35 44 20 37 37 56 35 20 42 38 2 16 -0.67 96 0 0 37 3 59 20 42 49.9 29 86 -24 36 7 32 38 1 7 35 43 54 38 25 27 -0.67 97 0 0 37 27 3 20 42 51.9 30 87 -23 36 30 37 38 24 10 36 6 59 38 48 30 -0.67 98 0 0 37 49 59 20 42 54.0 31 88 -22 36 53 34 38 47 5 36 29 56 39 11 25 -0.67 99 0 0 38 12 46 20 42 56.1 32 89 -21 37 16 22 39 9 52 36 52 45 39 34 11 -0.67 100 0 0 38 35 25 20 42 58.2 32 90 -20 37 39 2 39 32 29 37 15 25 39 56 48 -0.67 101 0 0 38 57 54 20 43 0.4 33 91 -20 38 1 32 39 54 56 37 37 56 40 19 14 -0.67 102 0 0 39 20 12 20 43 2.6 34 92 -19 38 23 53 40 17 13 38 0 17 40 41 30 -0.67 103 0 0 39 42 20 20 43 4.9 35 92 -18 38 46 3 40 39 19 38 22 29 41 3 35 -0.67 104 0 0 40 4 18 20 43 7.1 36 93 -17 39 8 2 41 1 14 38 44 29 41 25 29 -0.67 105 0 0 40 26 3 20 43 9.4 36 94 -16 39 29 51 41 22 57 39 6 18 41 47 11 -0.67 106 0 0 40 47 37 20 43 11.8 37 95 -15 39 51 27 41 44 28 39 27 56 42 8 40 -0.67 107 0 0 41 8 58 20 43 14.1 38 96 -15 40 12 52 42 5 46 39 49 21 42 29 57 -0.67 108 0 0 41 30 7 20 43 16.5 38 97 -14 40 34 3 42 26 51 40 10 35 42 51 1 -0.67 109 0 0 41 51 3 20 43 18.9 39 98 -13 40 55 2 42 47 43 40 31 35 43 11 52 -0.67 110 0 0 42 11 45 20 43 21.3 40 99 -12 41 15 48 43 8 22 40 52 22 43 32 29 -0.67 111 0 0 42 32 13 20 43 23.8 40 100 -11 41 36 20 43 28 46 41 12 55 43 52 51 -0.67 112 0 0 42 52 27 20 43 26.2 41 102 -10 41 56 38 43 48 56 41 33 15 44 13 0 -0.67 113 0 0 43 12 27 20 43 28.7 42 103 -10 42 16 42 44 8 51 41 53 21 44 32 53 -0.67 114 0 0 43 32 11 20 43 31.2 42 104 -9 42 36 31 44 28 32 42 13 12 44 52 31 -0.67 115 0 0 43 51 41 20 43 33.7 43 105 -8 42 56 5 44 47 57 42 32 48 45 11 55 -0.67 116 0 0 44 10 56 20 43 36.2 44 106 -7 43 15 24 45 7 6 42 52 9 45 31 2 -0.67 117 0 0 44 29 54 20 43 38.8 44 107 -6 43 34 28 45 26 0 43 11 14 45 49 54 -0.67 118 0 0 44 48 37 20 43 41.3 45 109 -6 43 53 16 45 44 38 43 30 4 46 8 29 -0.67 119 0 0 45 7 4 20 43 43.8 45 110 -5 44 11 48 46 3 0 43 48 38 46 26 49 -0.67 120 0 0 45 25 15 20 43 46.4 46 111 -4 44 30 4 46 21 5 44 6 56 46 44 52 -0.67 121 0 0 45 43 9 20 43 49.0 47 112 -3 44 48 3 46 38 54 44 24 58 47 2 38 -0.67 122 0 0 46 0 47 20 43 51.5 47 114 -3 45 5 46 46 56 26 44 42 43 47 20 8 -0.67 123 0 0 46 18 8 20 43 54.1 48 115 -2 45 23 13 47 13 41 45 0 12 47 37 20 -0.67 124 0 0 46 35 12 20 43 56.7 48 116 -1 45 40 22 47 30 39 45 17 24 47 54 16 -0.67 125 0 0 46 51 59 20 43 59.3 49 118 0 45 57 15 47 47 20 45 34 19 48 10 54 -0.67 126 0 0 47 8 28 20 44 1.8 49 119 0 46 13 50 48 3 44 45 50 57 48 27 15 -0.67 127 0 0 47 24 41 20 44 4.4 50 120 1 46 30 9 48 19 50 46 7 18 48 43 19 -0.67 128 0 0 47 40 36 20 44 7.0 50 122 2 46 46 10 48 35 39 46 23 21 48 59 5 -0.67 129 0 0 47 56 13 20 44 9.6 50 123 3 47 1 53 48 51 10 46 39 7 49 14 34 -0.67 130 0 0 48 11 33 20 44 12.2 51 125 3 47 17 19 49 6 24 46 54 36 49 29 45 -0.67 131 0 0 48 26 36 20 44 14.7 51 126 4 47 32 28 49 21 20 47 9 47 49 44 39 -0.67 132 0 0 48 41 21 20 44 17.3 52 128 5 47 47 19 49 35 59 47 24 40 49 59 14 -0.67 133 0 0 48 55 48 20 44 19.9 52 129 5 48 1 52 49 50 20 47 39 16 50 13 33 -0.67 134 0 0 49 9 57 20 44 22.4 52 131 6 48 16 7 50 4 23 47 53 34 50 27 33 -0.67 135 0 0 49 23 49 20 44 25.0 53 132 7 48 30 5 50 18 8 48 7 34 50 41 15 -0.67 136 0 0 49 37 23 20 44 27.5 53 134 8 48 43 45 50 31 36 48 21 17 50 54 40 -0.67 137 0 0 49 50 39 20 44 30.1 53 136 8 48 57 7 50 44 45 48 34 41 51 7 47 -0.67 138 0 0 50 3 37 20 44 32.6 54 137 9 49 10 12 50 57 37 48 47 48 51 20 37 -0.67 139 0 0 50 16 17 20 44 35.2 54 139 10 49 22 58 51 10 12 49 0 37 51 33 8 -0.67 140 0 0 50 28 40 20 44 37.7 54 141 10 49 35 27 51 22 28 49 13 9 51 45 22 -0.67 141 0 0 50 40 45 20 44 40.2 54 142 11 49 47 38 51 34 27 49 25 22 51 57 18 -0.67 142 0 0 50 52 33 20 44 42.7 55 144 12 49 59 31 51 46 8 49 37 18 52 8 57 -0.67 143 0 0 51 4 2 20 44 45.2 55 146 12 50 11 7 51 57 32 49 48 56 52 20 18 -0.67 144 0 0 51 15 14 20 44 47.7 55 147 13 50 22 25 52 8 38 50 0 16 52 31 21 -0.67 145 0 0 51 26 9 20 44 50.2 55 149 14 50 33 25 52 19 26 50 11 18 52 42 7 -0.67 146 0 0 51 36 45 20 44 52.7 55 151 14 50 44 7 52 29 57 50 22 3 52 52 35 -0.67 147 0 0 51 47 5 20 44 55.2 55 152 15 50 54 32 52 40 11 50 32 30 53 2 46 -0.67 148 0 0 51 57 6 20 44 57.6 56 154 15 51 4 39 52 50 7 50 42 40 53 12 40 -0.67 149 0 0 52 6 51 20 45 0.1 56 156 16 51 14 29 52 59 45 50 52 32 53 22 16 -0.67 150 0 0 52 16 18 20 45 2.5 56 158 17 51 24 1 53 9 7 51 2 6 53 31 35 -0.67 151 0 0 52 25 27 20 45 4.9 56 159 17 51 33 16 53 18 11 51 11 23 53 40 37 -0.67 152 0 0 52 34 19 20 45 7.4 56 161 18 51 42 13 53 26 58 51 20 23 53 49 22 -0.67 153 0 0 52 42 55 20 45 9.8 56 163 19 51 50 54 53 35 28 51 29 5 53 57 50 -0.67 154 0 0 52 51 13 20 45 12.2 56 165 19 51 59 16 53 43 41 51 37 30 54 6 1 -0.67 155 0 0 52 59 14 20 45 14.6 56 166 20 52 7 22 53 51 37 51 45 37 54 13 55 -0.67 156 0 0 53 6 57 20 45 16.9 56 168 20 52 15 11 53 59 16 51 53 28 54 21 32 -0.67 157 0 0 53 14 24 20 45 19.3 56 170 21 52 22 42 54 6 38 52 1 1 54 28 52 -0.67 158 0 0 53 21 34 20 45 21.7 56 171 22 52 29 56 54 13 44 52 8 17 54 35 55 -0.67 159 0 0 53 28 28 20 45 24.0 56 173 22 52 36 54 54 20 33 52 15 17 54 42 42 -0.67 160 0 0 53 35 4 20 45 26.3 56 175 23 52 43 35 54 27 5 52 21 59 54 49 13 -0.67 161 0 0 53 41 24 20 45 28.7 56 177 23 52 49 58 54 33 21 52 28 24 54 55 27 -0.67 162 0 0 53 47 27 20 45 31.0 56 178 24 52 56 5 54 39 20 52 34 33 55 1 24 -0.67 162 59 59 53 53 14 20 45 33.3 56 180 24 53 1 55 54 45 3 52 40 24 55 7 6 -0.67 163 59 59 53 58 43 20 45 35.6 56 182 25 53 7 28 54 50 29 52 45 59 55 12 30 -0.67 164 59 59 54 3 57 20 45 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47 41.5 30 264 53 49 35 39 51 22 44 49 13 20 51 45 38 -0.68 -131 0 1 50 16 34 20 47 43.1 30 265 53 49 23 13 51 10 30 49 0 52 51 33 28 -0.68 -130 0 1 50 3 57 20 47 44.7 29 266 53 49 10 30 50 58 0 48 48 6 51 21 0 -0.68 -129 0 1 49 51 3 20 47 46.2 29 267 53 48 57 30 50 45 11 48 35 3 51 8 14 -0.68 -128 0 1 49 37 51 20 47 47.7 28 268 54 48 44 12 50 32 5 48 21 43 50 55 11 -0.68 -127 0 1 49 24 21 20 47 49.2 27 269 54 48 30 36 50 18 42 48 8 5 50 41 50 -0.68 -126 0 1 49 10 34 20 47 50.6 27 270 54 48 16 43 50 5 1 47 54 9 50 28 12 -0.68 -125 0 1 48 56 29 20 47 52.0 26 271 54 48 2 32 49 51 3 47 39 56 50 14 16 -0.68 -124 0 1 48 42 7 20 47 53.5 25 272 54 47 48 4 49 36 47 47 25 25 50 0 3 -0.68 -123 0 1 48 27 28 20 47 54.8 25 272 54 47 33 19 49 22 14 47 10 37 49 45 32 -0.68 -122 0 1 48 12 31 20 47 56.2 24 273 54 47 18 16 49 7 23 46 55 32 49 30 44 -0.69 -121 0 1 47 57 17 20 47 57.5 23 274 54 47 2 56 48 52 15 46 40 9 49 15 39 -0.69 -120 0 1 47 41 45 20 47 58.8 23 275 54 46 47 18 48 36 49 46 24 30 49 0 16 -0.69 -119 0 1 47 25 57 20 48 0.1 22 276 54 46 31 24 48 21 7 46 8 33 48 44 36 -0.69 -118 0 1 47 9 51 20 48 1.3 21 277 54 46 15 13 48 5 7 45 52 19 48 28 39 -0.69 -117 0 1 46 53 28 20 48 2.5 20 277 54 45 58 44 47 48 50 45 35 48 48 12 25 -0.69 -116 0 1 46 36 49 20 48 3.7 20 278 54 45 41 59 47 32 16 45 19 1 47 55 54 -0.69 -115 0 0 46 19 53 20 48 4.9 19 279 54 45 24 57 47 15 26 45 1 57 47 39 5 -0.69 -114 0 0 46 2 40 20 48 6.0 18 280 54 45 7 39 46 58 19 44 44 36 47 22 0 -0.69 -113 0 0 45 45 10 20 48 7.1 17 280 54 44 50 4 46 40 55 44 26 59 47 4 39 -0.69 -112 0 0 45 27 25 20 48 8.1 17 281 54 44 32 13 46 23 14 44 9 6 46 47 1 -0.70 -111 0 0 45 9 23 20 48 9.1 16 282 54 44 14 7 46 5 18 43 50 57 46 29 7 -0.70 -110 0 0 44 51 5 20 48 10.1 15 283 54 43 55 44 45 47 5 43 32 33 46 10 56 -0.70 -109 0 0 44 32 32 20 48 11.0 14 283 54 43 37 6 45 28 37 43 13 53 45 52 30 -0.70 -108 0 0 44 13 43 20 48 11.9 14 284 53 43 18 12 45 9 53 42 54 57 45 33 48 -0.70 -107 0 0 43 54 39 20 48 12.7 13 285 53 42 59 4 44 50 53 42 35 47 45 14 50 -0.70 -106 0 0 43 35 19 20 48 13.5 12 286 53 42 39 40 44 31 38 42 16 22 44 55 38 -0.71 -105 0 0 43 15 46 20 48 14.3 11 286 53 42 20 2 44 12 9 41 56 42 44 36 10 -0.71 -104 0 0 42 55 57 20 48 15.0 11 287 52 42 0 10 43 52 24 41 36 48 44 16 27 -0.71 -103 0 0 42 35 55 20 48 15.6 10 288 52 41 40 4 43 32 26 41 16 40 43 56 31 -0.72 -102 0 0 42 15 38 20 48 16.3 9 288 52 41 19 44 43 12 13 40 56 19 43 36 20 -0.72 -101 0 0 41 55 8 20 48 16.8 8 289 51 40 59 10 42 51 47 40 35 44 43 15 55 -0.73 -100 0 0 41 34 25 20 48 17.3 7 290 51 40 38 24 42 31 7 40 14 56 42 55 16 -0.73 - 99 0 0 41 13 29 20 48 17.8 6 290 51 40 17 25 42 10 14 39 53 56 42 34 25 -0.74 - 98 0 0 40 52 21 20 48 18.2 6 291 50 39 56 14 41 49 9 39 32 44 42 13 21 -0.75 - 97 0 0 40 31 0 20 48 18.6 5 292 50 39 34 51 41 27 51 39 11 20 41 52 4 -0.77 - 96 0 0 40 9 28 20 48 18.9 4 292 49 39 13 16 41 6 21 38 49 44 41 30 35 -0.79 - 95 0 0 39 47 45 20 48 19.1 3 293 49 38 51 31 40 44 40 38 27 58 41 8 55 -0.82 - 94 0 0 39 25 51 20 48 19.3 2 294 48 38 29 35 40 22 48 38 6 1 40 47 4 -0.88 - 93 0 0 39 3 46 20 48 19.4 1 294 48 38 7 29 40 0 45 37 43 54 40 25 2 -1.00 - 92 0 0 38 41 32 20 48 19.5 1 295 47 37 45 13 39 38 32 .. .. .. 40 2 50 -1.53 - 91 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 39 16 10 .. .. .. 39 40 28 .... Uncertainty in time = +/- 2 secs Prediction of 2023 Aug 6.7 Data for the target star ------------------------ * name: UCAC4 549-014159 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 19 53.9932 DE: +19 37 28.395 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 19 53.9934 DE: +19 37 28.395 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (488) Kreusa asteroid class: approx. diameter [km]: 157 approx. diameter ["]: 0.063 distance from Earth [AU]: 3.45710 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#126 date of fit: 2023 Jul 30 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): 0.021", 0.013", 74.522° remarks: * orbital elements for (488)Kreusa : Mean anomaly = 281.7171447977 deg Arg. of pericenter = 76.8481104825 deg Long. of node = 82.9829953120 deg Inclination = 11.4722103250 deg Eccentricity = 0.1582984225 Semimajor axis = 3.1687505072 AU Perihelion dist = 2.6671423004 AU Mag: H = 7.92, G = 0.15 Epoch of elements : MJD 60173.86479167 TDT (2023 Aug 17.8648) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1262023Jul30,5.39,2023,8,17,20.754815,-0.071805,0.549340,16.284989,2.123951,-0.005107,-0.000498,-0.000001,0.000000 163.0273,19.6494,-130.30,13.29,False UCAC4 549-014159,5.33166476,19.6245541,0.00,12.11,0.00,0.0,0,,5.35461471,19.6493570,2.06,0.00,0,0,0 488,Kreusa,14.00,156.800,3.4571,0,0,2.933,5.40,,8.8,0 0,281.5660,2023,8,17,76.8481,82.9830,11.4722,0.15830,3.16875,2.66714,7.92,5.0,0.15 1.211,0.0210,0.0130,75,0.0247,Known errors,-1.00,0,-1,-1 20230817_014159,60162.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 06, 16:03 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org