IOTA/IOTA-ES occultation update for (643) Scheherezade / UCAC4 494-141576 event on 2023 Aug 17, 05:06 UT Visible from Canada, USA Summary ------- On 2023 Aug 17 UT, the 66.9 km diameter asteroid (643) Scheherezade will occult a 14.4 mag star in the constellation Pegasus for observers along a path across Canada, USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.14 mag to 15.07 mag (the magnitude of the asteroid) for at most 4.990 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: 91 * date and approx. time of event: 2023 Aug 17, 05:00 - 2023 Aug 17, 05:13 * geocentric midpoint of event [JD]: 2460173.71308833 * magnitude of target star: 14.39 * magnitude drop [mag]: 1.15 * estimated maximum duration [s]: 4.990 * Moon: 1 % sunlit, 157° distance * Sun: 157° distance * rough path description: Canada, USA The occultation path -------------------- * approximate projected width [km]: 86 * 1 sigma uncertainty interval [path widths]: +/- 0.52 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.027, +/- 0.020) * 1 sigma uncertainty ellipse (major, minor, PA): (0.028", 0.018", 67°) * approx speed of asteroid's shadow [km/s]: 13.3961 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 494-141576 by 643 Scheherezade 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 -165 0 0 27 37 39 5 12 59.1 1 80 4 28 1 28 27 13 58 28 26 9 26 49 42 .... -164 0 0 27 47 22 5 12 58.9 2 81 3 28 11 12 27 23 40 28 35 54 26 59 23 -0.64 -163 0 0 27 57 20 5 12 58.5 3 81 3 28 21 11 27 33 37 28 45 55 27 9 19 -0.70 -162 0 0 28 7 32 5 12 58.0 3 82 2 28 31 24 27 43 48 28 56 9 27 19 29 -0.73 -161 0 0 28 17 58 5 12 57.4 4 82 1 28 41 52 27 54 13 29 6 38 27 29 53 -0.75 -160 0 0 28 28 38 5 12 56.6 5 83 0 28 52 33 28 4 52 29 17 20 27 40 30 -0.76 -159 0 0 28 39 32 5 12 55.6 6 83 -1 29 3 28 28 15 44 29 28 16 27 51 21 -0.77 -158 0 0 28 50 38 5 12 54.5 7 84 -1 29 14 35 28 26 50 29 39 25 28 2 26 -0.77 -157 0 0 29 1 58 5 12 53.3 8 84 -2 29 25 56 28 38 8 29 50 47 28 13 43 -0.78 -156 0 0 29 13 30 5 12 51.9 9 85 -3 29 37 30 28 49 39 30 2 22 28 25 13 -0.78 -155 0 0 29 25 15 5 12 50.3 10 85 -4 29 49 16 29 1 23 30 14 9 28 36 55 -0.78 -154 0 0 29 37 12 5 12 48.7 11 86 -4 30 1 14 29 13 18 30 26 8 28 48 49 -0.79 -153 0 0 29 49 20 5 12 46.8 11 86 -5 30 13 23 29 25 25 30 38 19 29 0 55 -0.79 -152 0 0 30 1 40 5 12 44.9 12 87 -6 30 25 45 29 37 44 30 50 42 29 13 13 -0.79 -151 0 0 30 14 11 5 12 42.8 13 87 -7 30 38 17 29 50 14 31 3 16 29 25 42 -0.79 -150 0 0 30 26 53 5 12 40.6 14 88 -7 30 51 0 30 2 55 31 16 1 29 38 21 -0.79 -149 0 0 30 39 46 5 12 38.2 15 88 -8 31 3 54 30 15 46 31 28 56 29 51 11 -0.79 -148 0 0 30 52 49 5 12 35.7 16 89 -9 31 16 59 30 28 48 31 42 1 30 4 12 -0.79 -147 0 0 31 6 2 5 12 33.1 17 90 -10 31 30 13 30 42 0 31 55 17 30 17 22 -0.80 -146 0 0 31 19 25 5 12 30.3 17 90 -10 31 43 37 30 55 21 32 8 42 30 30 42 -0.80 -145 0 0 31 32 57 5 12 27.5 18 91 -11 31 57 10 31 8 52 32 22 17 30 44 12 -0.80 -144 0 0 31 46 38 5 12 24.5 19 91 -12 32 10 52 31 22 32 32 36 0 30 57 50 -0.80 -143 0 0 32 0 27 5 12 21.3 20 92 -12 32 24 43 31 36 20 32 49 52 31 11 37 -0.80 -142 0 0 32 14 25 5 12 18.1 21 93 -13 32 38 42 31 50 17 33 3 53 31 25 33 -0.80 -141 0 0 32 28 31 5 12 14.7 22 93 -14 32 52 49 32 4 21 33 18 1 31 39 36 -0.80 -140 0 0 32 42 44 5 12 11.2 22 94 -14 33 7 4 32 18 34 33 32 17 31 53 48 -0.80 -139 0 0 32 57 5 5 12 7.6 23 94 -15 33 21 26 32 32 53 33 46 40 32 8 6 -0.80 -138 0 0 33 11 33 5 12 3.9 24 95 -16 33 35 55 32 47 20 34 1 11 32 22 32 -0.80 -137 0 0 33 26 8 5 12 0.1 25 96 -16 33 50 31 33 1 53 34 15 48 32 37 4 -0.80 -136 0 0 33 40 48 5 11 56.2 26 96 -17 34 5 13 33 16 33 34 30 31 32 51 42 -0.80 -135 0 0 33 55 35 5 11 52.2 26 97 -17 34 20 0 33 31 19 34 45 20 33 6 27 -0.80 -134 0 0 34 10 28 5 11 48.0 27 98 -18 34 34 54 33 46 10 35 0 14 33 21 17 -0.80 -133 0 0 34 25 25 5 11 43.8 28 99 -18 34 49 52 34 1 7 35 15 14 33 36 12 -0.80 -132 0 0 34 40 28 5 11 39.5 29 99 -19 35 4 56 34 16 8 35 30 19 33 51 13 -0.80 -131 0 0 34 55 35 5 11 35.1 29 100 -20 35 20 4 34 31 14 35 45 28 34 6 18 -0.80 -130 0 0 35 10 46 5 11 30.6 30 101 -20 35 35 16 34 46 24 36 0 41 34 21 27 -0.80 -129 0 0 35 26 1 5 11 26.0 31 102 -21 35 50 32 35 1 38 36 15 58 34 36 40 -0.81 -128 0 0 35 41 20 5 11 21.3 32 103 -21 36 5 52 35 16 56 36 31 19 34 51 57 -0.81 -127 0 0 35 56 41 5 11 16.5 32 103 -22 36 21 15 35 32 17 36 46 42 35 7 17 -0.81 -126 0 0 36 12 6 5 11 11.7 33 104 -22 36 36 40 35 47 41 37 2 9 35 22 40 -0.81 -125 0 0 36 27 33 5 11 6.8 34 105 -23 36 52 8 36 3 7 37 17 37 35 38 5 -0.81 -124 0 0 36 43 2 5 11 1.8 34 106 -23 37 7 38 36 18 35 37 33 8 35 53 33 -0.81 -123 0 0 36 58 33 5 10 56.7 35 107 -23 37 23 9 36 34 5 37 48 41 36 9 2 -0.81 -122 0 0 37 14 5 5 10 51.6 36 108 -24 37 38 42 36 49 37 38 4 15 36 24 33 -0.81 -121 0 0 37 29 39 5 10 46.4 36 109 -24 37 54 17 37 5 10 38 19 49 36 40 5 -0.81 -120 0 0 37 45 13 5 10 41.1 37 110 -25 38 9 51 37 20 43 38 35 25 36 55 38 -0.81 -119 0 0 38 0 47 5 10 35.8 38 111 -25 38 25 26 37 36 17 38 51 1 37 11 11 -0.81 -118 0 0 38 16 22 5 10 30.4 38 112 -25 38 41 2 37 51 51 39 6 37 37 26 45 -0.81 -117 0 0 38 31 56 5 10 24.9 39 113 -26 38 56 37 38 7 25 39 22 12 37 42 18 -0.81 -116 0 0 38 47 30 5 10 19.5 40 114 -26 39 12 11 38 22 58 39 37 47 37 57 51 -0.81 -115 0 0 39 3 3 5 10 13.9 40 115 -26 39 27 44 38 38 31 39 53 21 38 13 23 -0.81 -114 0 0 39 18 35 5 10 8.3 41 116 -27 39 43 17 38 54 2 40 8 53 38 28 54 -0.81 -113 0 0 39 34 5 5 10 2.7 41 117 -27 39 58 47 39 9 32 40 24 24 38 44 23 -0.81 -112 0 0 39 49 33 5 9 57.0 42 118 -27 40 14 16 39 25 0 40 39 53 38 59 51 -0.81 -111 0 0 40 4 59 5 9 51.3 42 119 -28 40 29 42 39 40 26 40 55 20 39 15 16 -0.81 -110 0 0 40 20 23 5 9 45.6 43 121 -28 40 45 6 39 55 49 41 10 44 39 30 39 -0.81 -109 0 0 40 35 44 5 9 39.8 43 122 -28 41 0 27 40 11 10 41 26 5 39 46 0 -0.81 -108 0 0 40 51 1 5 9 34.0 44 123 -28 41 15 45 40 26 27 41 41 23 40 1 17 -0.81 -107 0 0 41 6 16 5 9 28.1 44 124 -29 41 30 59 40 41 41 41 56 38 40 16 31 -0.81 -106 0 0 41 21 26 5 9 22.3 45 126 -29 41 46 10 40 56 52 42 11 48 40 31 42 -0.81 -105 0 0 41 36 33 5 9 16.4 45 127 -29 42 1 16 41 11 59 42 26 55 40 46 49 -0.81 -104 0 0 41 51 36 5 9 10.5 46 128 -29 42 16 19 41 27 1 42 41 57 41 1 51 -0.81 -103 0 0 42 6 33 5 9 4.6 46 129 -29 42 31 17 41 41 59 42 56 55 41 16 49 -0.82 -102 0 0 42 21 27 5 8 58.6 46 131 -29 42 46 10 41 56 53 43 11 48 41 31 43 -0.82 -101 0 0 42 36 15 5 8 52.7 47 132 -30 43 0 58 42 11 41 43 26 36 41 46 31 -0.82 -100 0 0 42 50 58 5 8 46.7 47 134 -30 43 15 40 42 26 24 43 41 18 42 1 15 -0.82 - 99 0 0 43 5 35 5 8 40.7 47 135 -30 43 30 17 42 41 1 43 55 55 42 15 52 -0.82 - 98 0 0 43 20 6 5 8 34.8 48 136 -30 43 44 48 42 55 33 44 10 25 42 30 24 -0.82 - 97 0 0 43 34 31 5 8 28.8 48 138 -30 43 59 13 43 9 59 44 24 50 42 44 50 -0.82 - 96 0 0 43 48 50 5 8 22.8 48 139 -30 44 13 32 43 24 18 44 39 8 42 59 10 -0.82 - 95 0 0 44 3 3 5 8 16.8 49 141 -30 44 27 44 43 38 31 44 53 20 43 13 24 -0.82 - 94 0 0 44 17 8 5 8 10.8 49 142 -30 44 41 49 43 52 37 45 7 24 43 27 30 -0.82 - 93 0 0 44 31 7 5 8 4.9 49 144 -30 44 55 47 44 6 36 45 21 22 43 41 30 -0.82 - 92 0 0 44 44 59 5 7 58.9 49 145 -30 45 9 38 44 20 29 45 35 12 43 55 23 -0.82 - 91 0 0 44 58 43 5 7 52.9 50 147 -30 45 23 21 44 34 13 45 48 55 44 9 8 -0.82 - 90 0 0 45 12 19 5 7 47.0 50 148 -30 45 36 57 44 47 50 46 2 30 44 22 46 -0.82 - 89 0 0 45 25 48 5 7 41.0 50 150 -30 45 50 25 45 1 20 46 15 57 44 36 16 -0.82 - 88 0 0 45 39 9 5 7 35.1 50 151 -30 46 3 45 45 14 41 46 29 17 44 49 38 -0.82 - 87 0 0 45 52 21 5 7 29.2 50 153 -30 46 16 57 45 27 55 46 42 28 45 2 52 -0.82 - 86 0 0 46 5 25 5 7 23.3 50 154 -30 46 30 0 45 41 0 46 55 30 45 15 58 -0.82 - 85 0 0 46 18 21 5 7 17.4 50 156 -30 46 42 55 45 53 56 47 8 24 45 28 55 -0.82 - 84 0 0 46 31 8 5 7 11.5 50 157 -30 46 55 41 46 6 44 47 21 9 45 41 44 -0.82 - 83 0 0 46 43 46 5 7 5.7 50 159 -30 47 8 18 46 19 23 47 33 45 45 54 24 -0.82 - 82 0 0 46 56 15 5 6 59.9 51 161 -29 47 20 47 46 31 53 47 46 12 46 6 55 -0.82 - 81 0 0 47 8 35 5 6 54.1 51 162 -29 47 33 6 46 44 14 47 58 30 46 19 17 -0.82 - 80 0 0 47 20 46 5 6 48.3 51 164 -29 47 45 15 46 56 26 48 10 39 46 31 30 -0.82 - 79 0 0 47 32 47 5 6 42.6 51 165 -29 47 57 15 47 8 28 48 22 38 46 43 33 -0.82 - 78 0 0 47 44 39 5 6 36.9 50 167 -29 48 9 6 47 20 20 48 34 27 46 55 27 -0.82 - 77 0 0 47 56 21 5 6 31.2 50 168 -29 48 20 47 47 32 3 48 46 7 47 7 11 -0.82 - 76 0 0 48 7 53 5 6 25.5 50 170 -29 48 32 18 47 43 37 48 57 37 47 18 45 -0.82 - 75 0 0 48 19 15 5 6 19.9 50 172 -28 48 43 39 47 55 0 49 8 57 47 30 10 -0.82 - 74 0 0 48 30 27 5 6 14.3 50 173 -28 48 54 50 48 6 13 49 20 6 47 41 24 -0.82 - 73 0 0 48 41 29 5 6 8.8 50 175 -28 49 5 51 48 17 17 49 31 6 47 52 28 -0.82 - 72 0 0 48 52 21 5 6 3.2 50 176 -28 49 16 41 48 28 9 49 41 55 48 3 23 -0.82 - 71 0 0 49 3 2 5 5 57.8 50 178 -27 49 27 21 48 38 52 49 52 34 48 14 6 -0.82 - 70 0 0 49 13 33 5 5 52.3 50 179 -27 49 37 51 48 49 24 50 3 2 48 24 40 -0.83 - 69 0 0 49 23 54 5 5 46.9 49 181 -27 49 48 10 48 59 46 50 13 20 48 35 3 -0.83 - 68 0 0 49 34 4 5 5 41.5 49 182 -27 49 58 19 49 9 57 50 23 28 48 45 15 -0.83 - 67 0 0 49 44 3 5 5 36.2 49 184 -26 50 8 17 49 19 57 50 33 24 48 55 17 -0.83 - 66 0 0 49 53 51 5 5 30.9 49 185 -26 50 18 4 49 29 47 50 43 10 49 5 8 -0.83 - 65 0 0 50 3 29 5 5 25.6 49 186 -26 50 27 40 49 39 26 50 52 45 49 14 48 -0.83 - 64 0 0 50 12 56 5 5 20.4 48 188 -26 50 37 6 49 48 54 51 2 9 49 24 17 -0.83 - 63 0 0 50 22 11 5 5 15.2 48 189 -25 50 46 20 49 58 11 51 11 22 49 33 36 -0.83 - 62 0 0 50 31 16 5 5 10.0 48 191 -25 50 55 24 50 7 17 51 20 24 49 42 43 -0.83 - 61 0 0 50 40 10 5 5 4.9 48 192 -25 51 4 16 50 16 12 51 29 15 49 51 39 -0.83 - 60 0 0 50 48 52 5 4 59.9 47 194 -24 51 12 57 50 24 56 51 37 55 50 0 25 -0.83 - 59 0 0 50 57 24 5 4 54.9 47 195 -24 51 21 27 50 33 29 51 46 24 50 8 59 -0.83 - 58 0 0 51 5 44 5 4 49.9 47 196 -24 51 29 46 50 41 50 51 54 41 50 17 21 -0.83 - 57 0 0 51 13 53 5 4 45.0 46 198 -23 51 37 54 50 50 1 52 2 48 50 25 33 -0.83 - 56 0 0 51 21 51 5 4 40.1 46 199 -23 51 45 50 50 58 0 52 10 43 50 33 33 -0.83 - 55 0 0 51 29 37 5 4 35.2 46 200 -23 51 53 35 51 5 47 52 18 26 50 41 22 -0.83 - 54 0 0 51 37 12 5 4 30.4 46 202 -22 52 1 9 51 13 23 52 25 59 50 49 0 -0.83 - 53 0 0 51 44 36 5 4 25.7 45 203 -22 52 8 32 51 20 48 52 33 20 50 56 26 -0.83 - 52 0 0 51 51 48 5 4 21.0 45 204 -22 52 15 43 51 28 2 52 40 30 51 3 41 -0.83 - 51 0 0 51 58 49 5 4 16.3 44 205 -21 52 22 42 51 35 4 52 47 28 51 10 44 -0.83 - 50 0 0 52 5 38 5 4 11.7 44 207 -21 52 29 30 51 41 55 52 54 15 51 17 36 -0.83 - 49 0 0 52 12 16 5 4 7.1 44 208 -21 52 36 7 51 48 34 53 0 50 51 24 16 -0.83 - 48 0 0 52 18 43 5 4 2.6 43 209 -20 52 42 32 51 55 1 53 7 14 51 30 45 -0.83 - 47 0 0 52 24 58 5 3 58.1 43 210 -20 52 48 46 52 1 17 53 13 27 51 37 2 -0.83 - 46 0 0 52 31 1 5 3 53.6 43 212 -20 52 54 48 52 7 22 53 19 28 51 43 8 -0.83 - 45 0 0 52 36 53 5 3 49.3 42 213 -19 53 0 39 52 13 15 53 25 17 51 49 2 -0.83 - 44 0 0 52 42 33 5 3 44.9 42 214 -19 53 6 18 52 18 56 53 30 55 51 54 44 -0.83 - 43 0 0 52 48 2 5 3 40.6 41 215 -18 53 11 46 52 24 26 53 36 22 52 0 15 -0.83 - 42 0 0 52 53 19 5 3 36.4 41 216 -18 53 17 2 52 29 44 53 41 37 52 5 34 -0.83 - 41 0 0 52 58 25 5 3 32.1 40 217 -18 53 22 7 52 34 51 53 46 40 52 10 42 -0.83 - 40 0 0 53 3 19 5 3 28.0 40 219 -17 53 26 59 52 39 46 53 51 32 52 15 38 -0.83 - 39 0 0 53 8 1 5 3 23.9 40 220 -17 53 31 41 52 44 29 53 56 13 52 20 22 -0.83 - 38 0 0 53 12 32 5 3 19.8 39 221 -16 53 36 11 52 49 1 54 0 41 52 24 55 -0.83 - 37 0 0 53 16 51 5 3 15.8 39 222 -16 53 40 29 52 53 21 54 4 59 52 29 16 -0.83 - 36 0 0 53 20 58 5 3 11.8 38 223 -16 53 44 35 52 57 29 54 9 4 52 33 25 -0.83 - 35 0 0 53 24 54 5 3 7.9 38 224 -15 53 48 31 53 1 26 54 12 59 52 37 23 -0.83 - 34 0 0 53 28 39 5 3 4.0 37 225 -15 53 52 14 53 5 11 54 16 41 52 41 9 -0.83 - 33 0 0 53 32 11 5 3 0.2 37 226 -14 53 55 46 53 8 45 54 20 12 52 44 43 -0.83 - 32 0 0 53 35 32 5 2 56.4 36 227 -14 53 59 6 53 12 6 54 23 32 52 48 5 -0.83 - 31 0 0 53 38 42 5 2 52.6 36 228 -13 54 2 15 53 15 16 54 26 40 52 51 16 -0.83 - 30 0 0 53 41 39 5 2 49.0 36 229 -13 54 5 12 53 18 15 54 29 36 52 54 15 -0.83 - 29 0 0 53 44 26 5 2 45.3 35 230 -12 54 7 57 53 21 2 54 32 21 52 57 3 -0.83 - 28 0 0 53 47 0 5 2 41.7 35 232 -12 54 10 31 53 23 37 54 34 54 52 59 38 -0.83 - 27 0 0 53 49 23 5 2 38.2 34 233 -12 54 12 53 53 26 0 54 37 15 53 2 2 -0.83 - 26 0 0 53 51 34 5 2 34.7 34 234 -11 54 15 4 53 28 12 54 39 25 53 4 14 -0.83 - 25 0 0 53 53 33 5 2 31.2 33 235 -11 54 17 3 53 30 11 54 41 24 53 6 15 -0.83 - 24 0 0 53 55 21 5 2 27.8 33 236 -10 54 18 50 53 32 0 54 43 11 53 8 4 -0.83 - 23 0 0 53 56 57 5 2 24.5 32 237 -10 54 20 26 53 33 36 54 44 46 53 9 41 -0.83 - 22 0 0 53 58 22 5 2 21.2 32 238 -9 54 21 50 53 35 1 54 46 10 53 11 6 -0.83 - 21 0 0 53 59 34 5 2 17.9 31 238 -9 54 23 2 53 36 14 54 47 22 53 12 19 -0.83 - 20 0 0 54 0 35 5 2 14.7 31 239 -8 54 24 3 53 37 15 54 48 22 53 13 21 -0.83 - 19 0 0 54 1 25 5 2 11.5 30 240 -8 54 24 52 53 38 5 54 49 11 53 14 11 -0.83 - 18 0 0 54 2 2 5 2 8.4 30 241 -7 54 25 30 53 38 43 54 49 48 53 14 49 -0.83 - 17 0 0 54 2 28 5 2 5.3 29 242 -7 54 25 55 53 39 9 54 50 14 53 15 15 -0.83 - 16 0 0 54 2 43 5 2 2.3 29 243 -6 54 26 10 53 39 24 54 50 28 53 15 30 -0.83 - 15 0 0 54 2 45 5 1 59.4 28 244 -6 54 26 12 53 39 26 54 50 30 53 15 32 -0.83 - 14 0 0 54 2 36 5 1 56.5 27 245 -5 54 26 3 53 39 17 54 50 21 53 15 23 -0.83 - 13 0 0 54 2 15 5 1 53.6 27 246 -5 54 25 42 53 38 56 54 50 0 53 15 2 -0.83 - 12 0 0 54 1 42 5 1 50.8 26 247 -4 54 25 9 53 38 23 54 49 27 53 14 30 -0.83 - 11 0 0 54 0 58 5 1 48.0 26 248 -4 54 24 25 53 37 39 54 48 43 53 13 45 -0.83 - 10 0 0 54 0 2 5 1 45.3 25 249 -3 54 23 29 53 36 43 54 47 47 53 12 49 -0.83 - 9 0 0 53 58 54 5 1 42.6 25 250 -3 54 22 21 53 35 34 54 46 40 53 11 40 -0.83 - 8 0 0 53 57 34 5 1 40.0 24 251 -2 54 21 2 53 34 15 54 45 20 53 10 20 -0.83 - 7 0 0 53 56 3 5 1 37.4 24 251 -2 54 19 30 53 32 43 54 43 49 53 8 48 -0.83 - 5 59 59 53 54 19 5 1 34.9 23 252 -1 54 17 47 53 30 59 54 42 7 53 7 4 -0.83 - 4 59 59 53 52 24 5 1 32.5 23 253 -1 54 15 53 53 29 4 54 40 12 53 5 9 -0.83 - 3 59 59 53 50 17 5 1 30.1 22 254 0 54 13 46 53 26 57 54 38 6 53 3 1 -0.83 - 2 59 59 53 47 59 5 1 27.7 22 255 0 54 11 28 53 24 37 54 35 48 53 0 41 -0.83 - 1 59 59 53 45 28 5 1 25.4 21 256 1 54 8 58 53 22 6 54 33 19 52 58 10 -0.83 - 0 59 59 53 42 46 5 1 23.2 20 257 1 54 6 16 53 19 24 54 30 37 52 55 27 -0.83 0 0 1 53 39 51 5 1 21.0 20 258 2 54 3 22 53 16 29 54 27 44 52 52 31 -0.83 1 0 1 53 36 45 5 1 18.9 19 258 2 54 0 16 53 13 22 54 24 39 52 49 24 -0.83 2 0 1 53 33 27 5 1 16.8 19 259 3 53 56 59 53 10 3 54 21 22 52 46 5 -0.83 3 0 1 53 29 57 5 1 14.7 18 260 3 53 53 30 53 6 33 54 17 54 52 42 33 -0.83 4 0 1 53 26 15 5 1 12.8 18 261 4 53 49 48 53 2 50 54 14 13 52 38 50 -0.83 5 0 1 53 22 21 5 1 10.9 17 262 4 53 45 55 52 58 56 54 10 21 52 34 55 -0.83 6 0 1 53 18 16 5 1 9.0 16 263 5 53 41 50 52 54 49 54 6 17 52 30 47 -0.83 7 0 1 53 13 58 5 1 7.2 16 264 6 53 37 33 52 50 30 54 2 1 52 26 28 -0.83 8 0 1 53 9 28 5 1 5.5 15 264 6 53 33 5 52 46 0 53 57 33 52 21 57 -0.84 9 0 1 53 4 47 5 1 3.8 15 265 7 53 28 24 52 41 17 53 52 53 52 17 13 -0.84 10 0 1 52 59 53 5 1 2.2 14 266 7 53 23 31 52 36 23 53 48 1 52 12 18 -0.84 11 0 1 52 54 47 5 1 0.6 14 267 8 53 18 26 52 31 16 53 42 57 52 7 10 -0.84 12 0 1 52 49 30 5 0 59.1 13 268 8 53 13 10 52 25 58 53 37 42 52 1 51 -0.84 13 0 1 52 44 0 5 0 57.7 12 268 9 53 7 41 52 20 27 53 32 14 51 56 19 -0.84 14 0 1 52 38 18 5 0 56.3 12 269 10 53 2 0 52 14 44 53 26 35 51 50 36 -0.84 15 0 1 52 32 25 5 0 55.0 11 270 10 52 56 8 52 8 50 53 20 43 51 44 40 -0.84 16 0 1 52 26 19 5 0 53.8 10 271 11 52 50 3 52 2 43 53 14 40 51 38 32 -0.85 17 0 1 52 20 1 5 0 52.6 10 272 11 52 43 47 51 56 24 53 8 24 51 32 12 -0.85 18 0 1 52 13 32 5 0 51.5 9 272 12 52 37 18 51 49 53 53 1 57 51 25 40 -0.85 19 0 1 52 6 50 5 0 50.4 9 273 12 52 30 38 51 43 11 52 55 18 51 18 56 -0.85 20 0 1 51 59 56 5 0 49.4 8 274 13 52 23 45 51 36 16 52 48 26 51 12 0 -0.86 21 0 1 51 52 50 5 0 48.5 7 275 14 52 16 40 51 29 9 52 41 23 51 4 52 -0.86 22 0 1 51 45 33 5 0 47.7 7 276 14 52 9 24 51 21 50 52 34 8 50 57 32 -0.86 23 0 1 51 38 3 5 0 46.9 6 276 15 52 1 55 51 14 19 52 26 40 50 49 59 -0.87 24 0 1 51 30 21 5 0 46.2 6 277 16 51 54 15 51 6 36 52 19 1 50 42 15 -0.88 25 0 1 51 22 27 5 0 45.6 5 278 16 51 46 22 50 58 41 52 11 10 50 34 19 -0.88 26 0 1 51 14 22 5 0 45.0 4 279 17 51 38 18 50 50 33 52 3 7 50 26 10 -0.90 27 0 1 51 6 4 5 0 44.5 4 280 17 51 30 1 50 42 14 51 54 52 50 17 50 -0.91 28 0 1 50 57 34 5 0 44.1 3 280 18 51 21 33 50 33 44 51 46 25 50 9 18 -0.93 29 0 1 50 48 53 5 0 43.8 2 281 19 51 12 53 50 25 1 51 37 46 50 0 34 -0.97 30 0 1 50 39 59 5 0 43.6 2 282 19 51 4 1 50 16 6 51 28 56 49 51 37 -1.03 31 0 1 50 30 54 5 0 43.4 1 283 20 50 54 57 50 6 59 51 19 53 49 42 30 -1.17 32 0 1 50 21 37 5 0 43.3 0 283 21 50 45 41 49 57 41 51 10 39 49 33 10 -1.82 Uncertainty in time = +/- 4 secs Prediction of 2023 Aug 6.7 Data for the target star ------------------------ * name: UCAC4 494-141576 * constellation : Pegasus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 08 16.7432 DE: +08 42 20.318 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 08 16.7432 DE: +08 42 20.318 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 14.4 * B mag [mag]: 14.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (643) Scheherezade asteroid class: approx. diameter [km]: 67 approx. diameter ["]: 0.036 distance from Earth [AU]: 2.56230 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.028", 0.018", 66.6° remarks: * orbital elements for (643)Scheherezade : Mean anomaly = 216.0709399960 deg Arg. of pericenter = 228.9892449028 deg Long. of node = 252.1582115973 deg Inclination = 13.7724003061 deg Eccentricity = 0.0567675557 Semimajor axis = 3.3586302334 AU Perihelion dist = 3.1679690045 AU Mag: H = 9.96, G = 0.15 Epoch of elements : MJD 60173.21309804 TDT (2023 Aug 17.2131) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Jul30,4.99,2023,8,17,5.114120,-0.126965,0.619730,-7.407311,-1.517486,-0.000579,-0.002185,0.000001,0.000000 -69.6727,8.8219,104.34,13.50,False UCAC4 494-141576,22.13798421,8.7056437,14.74,14.39,14.20,0.0,0,,22.15775619,8.8219397,1.14,0.98,0,0,0 643,Scheherezade,15.07,66.914,2.5623,0,0,-1.715,-5.21,,3.8,0 0,216.0368,2023,8,17,228.9892,252.1582,13.7724,0.05677,3.35863,3.16797,9.80,5.0,0.15 1.515,0.0283,0.0180,67,0.0336,Known errors,1.12,0,-1,-1 20230817_141576,60162.67 ------ 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