IOTA/IOTA-ES occultation update for (140) Siwa / TYC 1358-01648-1 event on 2024 Dec 25, 10:10 UT Visible from Summary ------- On 2024 Dec 25 UT, the 107.068 km diameter asteroid (140) Siwa will occult a 11.3 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.14 mag to 13.26 mag (the magnitude of the asteroid) for at most 7.200 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: 100 * date and approx. time of event: 2024 Dec 25, 10:03 - 2024 Dec 25, 10:16 * geocentric midpoint of event [JD]: 2460669.92371745 * magnitude of target star: 11.28 * magnitude drop [mag]: 2.14 * estimated maximum duration [s]: 7.200 * Moon: 28 % sunlit, 102° distance * Sun: 166° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 119 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.005", 95°) * approx speed of asteroid's shadow [km/s]: 14.8644 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1358-01648-1 by 140 Siwa on 2024 Dec 25 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 116 0 0 34 12 50 10 16 34.0 0 64 -13 34 48 54 33 36 58 34 54 17 33 31 39 .... 117 0 0 34 37 46 10 16 33.9 1 64 -14 35 13 48 34 1 57 35 19 11 33 56 38 -0.44 118 0 0 35 2 27 10 16 33.6 2 65 -15 35 38 27 34 26 40 35 43 49 34 21 22 -0.45 119 0 0 35 26 52 10 16 33.2 3 65 -16 36 2 49 34 51 8 36 8 11 34 45 50 -0.46 120 0 0 35 51 1 10 16 32.7 4 66 -16 36 26 55 35 15 19 36 32 16 35 10 1 -0.47 121 0 0 36 14 53 10 16 32.1 5 66 -17 36 50 44 35 39 13 36 56 5 35 33 56 -0.47 122 0 0 36 38 27 10 16 31.4 6 67 -18 37 14 15 36 2 51 37 19 36 35 57 34 -0.47 123 0 0 37 1 44 10 16 30.6 7 68 -19 37 37 29 36 26 11 37 42 49 36 20 55 -0.47 124 0 0 37 24 43 10 16 29.7 8 68 -20 38 0 25 36 49 13 38 5 45 36 43 57 -0.47 125 0 0 37 47 24 10 16 28.6 9 69 -21 38 23 3 37 11 57 38 28 22 37 6 42 -0.47 126 0 0 38 9 47 10 16 27.5 9 69 -22 38 45 23 37 34 23 38 50 41 37 29 9 -0.47 127 0 0 38 31 51 10 16 26.2 10 70 -23 39 7 23 37 56 31 39 12 41 37 51 16 -0.47 128 0 0 38 53 36 10 16 24.9 11 71 -23 39 29 5 38 18 19 39 34 22 38 13 6 -0.47 129 0 0 39 15 2 10 16 23.4 12 71 -24 39 50 27 38 39 49 39 55 44 38 34 36 -0.48 130 0 0 39 36 9 10 16 21.9 13 72 -25 40 11 30 39 0 59 40 16 47 38 55 46 -0.48 131 0 0 39 56 56 10 16 20.3 14 73 -26 40 32 14 39 21 50 40 37 29 39 16 38 -0.48 132 0 0 40 17 23 10 16 18.6 14 73 -27 40 52 37 39 42 21 40 57 52 39 37 10 -0.48 133 0 0 40 37 31 10 16 16.8 15 74 -27 41 12 41 40 2 33 41 17 56 39 57 22 -0.48 134 0 0 40 57 19 10 16 15.0 16 75 -28 41 32 25 40 22 24 41 37 39 40 17 14 -0.48 135 0 0 41 16 46 10 16 13.0 17 75 -29 41 51 48 40 41 55 41 57 2 40 36 46 -0.48 136 0 0 41 35 54 10 16 11.0 18 76 -30 42 10 51 41 1 7 42 16 4 40 55 57 -0.48 137 0 0 41 54 41 10 16 8.9 19 77 -31 42 29 34 41 19 58 42 34 47 41 14 49 -0.48 138 0 0 42 13 7 10 16 6.7 19 77 -31 42 47 57 41 38 28 42 53 9 41 33 20 -0.48 139 0 0 42 31 13 10 16 4.5 20 78 -32 43 5 59 41 56 39 43 11 10 41 51 31 -0.48 140 0 0 42 48 59 10 16 2.2 21 79 -33 43 23 41 42 14 28 43 28 51 42 9 21 -0.48 141 0 0 43 6 24 10 15 59.8 22 80 -34 43 41 2 42 31 58 43 46 12 42 26 51 -0.48 142 0 0 43 23 29 10 15 57.4 22 80 -34 43 58 2 42 49 6 44 3 11 42 44 1 -0.48 143 0 0 43 40 13 10 15 54.9 23 81 -35 44 14 42 43 5 55 44 19 51 43 0 49 -0.48 144 0 0 43 56 36 10 15 52.3 24 82 -36 44 31 2 43 22 22 44 36 10 43 17 18 -0.48 145 0 0 44 12 39 10 15 49.7 25 83 -36 44 47 0 43 38 29 44 52 8 43 33 25 -0.48 146 0 0 44 28 22 10 15 47.0 25 83 -37 45 2 39 43 54 15 45 7 45 43 49 12 -0.48 147 0 0 44 43 43 10 15 44.3 26 84 -38 45 17 56 44 9 41 45 23 2 44 4 38 -0.48 148 0 0 44 58 45 10 15 41.5 27 85 -38 45 32 53 44 24 47 45 37 59 44 19 44 -0.48 149 0 0 45 13 25 10 15 38.7 28 86 -39 45 47 30 44 39 31 45 52 35 44 34 30 -0.48 150 0 0 45 27 46 10 15 35.8 28 87 -40 46 1 46 44 53 56 46 6 50 44 48 55 -0.48 151 0 0 45 41 46 10 15 32.9 29 87 -40 46 15 42 45 8 0 46 20 46 45 2 59 -0.48 152 0 0 45 55 25 10 15 29.9 30 88 -41 46 29 18 45 21 43 46 34 21 45 16 43 -0.48 153 0 0 46 8 44 10 15 26.9 30 89 -42 46 42 33 45 35 6 46 47 35 45 30 7 -0.48 154 0 0 46 21 43 10 15 23.9 31 90 -42 46 55 28 45 48 9 47 0 30 45 43 10 -0.48 155 0 0 46 34 22 10 15 20.8 32 91 -43 47 8 3 46 0 51 47 13 4 45 55 53 -0.48 156 0 0 46 46 41 10 15 17.6 32 92 -44 47 20 18 46 13 13 47 25 19 46 8 16 -0.48 157 0 0 46 58 39 10 15 14.4 33 92 -44 47 32 12 46 25 15 47 37 13 46 20 18 -0.48 158 0 0 47 10 18 10 15 11.2 34 93 -45 47 43 47 46 36 58 47 48 47 46 32 1 -0.48 159 0 0 47 21 36 10 15 7.9 34 94 -45 47 55 3 46 48 20 48 0 2 46 43 24 -0.48 160 0 0 47 32 35 10 15 4.6 35 95 -46 48 5 58 46 59 22 48 10 57 46 54 27 -0.48 161 0 0 47 43 14 10 15 1.3 36 96 -47 48 16 34 47 10 5 48 21 32 47 5 10 -0.48 162 0 0 47 53 34 10 14 58.0 36 97 -47 48 26 50 47 20 28 48 31 47 47 15 33 -0.49 163 0 0 48 3 34 10 14 54.6 37 98 -48 48 36 46 47 30 31 48 41 43 47 25 37 -0.49 164 0 0 48 13 14 10 14 51.1 38 99 -48 48 46 24 47 40 15 48 51 20 47 35 21 -0.49 165 0 0 48 22 35 10 14 47.7 38 100 -49 48 55 42 47 49 39 49 0 38 47 44 46 -0.49 166 0 0 48 31 37 10 14 44.2 39 101 -49 49 4 40 47 58 44 49 9 36 47 53 51 -0.49 167 0 0 48 40 20 10 14 40.6 39 102 -50 49 13 20 48 7 29 49 18 15 48 2 37 -0.49 168 0 0 48 48 43 10 14 37.1 40 102 -51 49 21 40 48 15 55 49 26 35 48 11 4 -0.49 169 0 0 48 56 47 10 14 33.5 41 103 -51 49 29 42 48 24 2 49 34 36 48 19 11 -0.49 170 0 0 49 4 33 10 14 29.9 41 104 -52 49 37 24 48 31 51 49 42 18 48 27 0 -0.49 171 0 0 49 11 59 10 14 26.2 42 105 -52 49 44 48 48 39 20 49 49 42 48 34 29 -0.49 172 0 0 49 19 7 10 14 22.6 42 106 -53 49 51 53 48 46 30 49 56 47 48 41 39 -0.49 173 0 0 49 25 56 10 14 18.9 43 107 -53 49 58 40 48 53 21 50 3 33 48 48 31 -0.49 174 0 0 49 32 26 10 14 15.1 44 108 -53 50 5 8 48 59 54 50 10 0 48 55 4 -0.49 175 0 0 49 38 38 10 14 11.4 44 110 -54 50 11 17 49 6 7 50 16 9 49 1 18 -0.49 176 0 0 49 44 31 10 14 7.6 45 111 -54 50 17 8 49 12 3 50 22 0 49 7 14 -0.49 177 0 0 49 50 5 10 14 3.8 45 112 -55 50 22 41 49 17 39 50 27 32 49 12 51 -0.49 178 0 0 49 55 22 10 14 0.0 46 113 -55 50 27 55 49 22 57 50 32 46 49 18 9 -0.49 179 0 0 50 0 20 10 13 56.2 46 114 -56 50 32 51 49 27 57 50 37 42 49 23 9 -0.49 -180 0 0 50 5 0 10 13 52.3 47 115 -56 50 37 29 49 32 39 50 42 20 49 27 51 -0.49 -179 0 0 50 9 21 10 13 48.4 47 116 -57 50 41 49 49 37 2 50 46 40 49 32 14 -0.49 -178 0 0 50 13 24 10 13 44.5 48 117 -57 50 45 51 49 41 7 50 50 41 49 36 19 -0.49 -177 0 0 50 17 10 10 13 40.5 48 118 -57 50 49 35 49 44 53 50 54 25 49 40 6 -0.49 -176 0 0 50 20 37 10 13 36.5 49 119 -58 50 53 1 49 48 22 50 57 51 49 43 35 -0.49 -175 0 0 50 23 46 10 13 32.6 49 121 -58 50 56 9 49 51 32 51 0 59 49 46 45 -0.49 -174 0 0 50 26 38 10 13 28.5 50 122 -58 50 59 0 49 54 25 51 3 49 49 49 38 -0.49 -173 0 0 50 29 11 10 13 24.5 50 123 -59 51 1 32 49 56 59 51 6 21 49 52 12 -0.49 -172 0 0 50 31 27 10 13 20.4 51 124 -59 51 3 47 49 59 15 51 8 36 49 54 29 -0.49 -171 0 0 50 33 24 10 13 16.3 51 126 -59 51 5 44 50 1 14 51 10 33 49 56 27 -0.49 -170 0 0 50 35 4 10 13 12.2 52 127 -60 51 7 23 50 2 54 51 12 12 49 58 8 -0.49 -169 0 0 50 36 26 10 13 8.1 52 128 -60 51 8 45 50 4 17 51 13 34 49 59 30 -0.49 -168 0 0 50 37 31 10 13 3.9 53 129 -60 51 9 49 50 5 21 51 14 38 50 0 35 -0.49 -167 0 0 50 38 17 10 12 59.8 53 131 -61 51 10 35 50 6 8 51 15 24 50 1 22 -0.49 -166 0 0 50 38 46 10 12 55.6 54 132 -61 51 11 4 50 6 37 51 15 53 50 1 51 -0.49 -165 0 0 50 38 57 10 12 51.3 54 133 -61 51 11 15 50 6 48 51 16 4 50 2 2 -0.49 -164 0 0 50 38 51 10 12 47.1 55 135 -61 51 11 8 50 6 42 51 15 57 50 1 56 -0.49 -163 0 0 50 38 26 10 12 42.8 55 136 -62 51 10 44 50 6 17 51 15 33 50 1 31 -0.49 -162 0 0 50 37 45 10 12 38.5 56 138 -62 51 10 3 50 5 35 51 14 52 50 0 49 -0.49 -161 0 0 50 36 45 10 12 34.2 56 139 -62 51 9 4 50 4 35 51 13 53 49 59 49 -0.49 -160 0 0 50 35 28 10 12 29.9 56 140 -62 51 7 47 50 3 17 51 12 36 49 58 31 -0.49 -159 0 0 50 33 52 10 12 25.5 57 142 -62 51 6 12 50 1 41 51 11 2 49 56 55 -0.49 -158 0 0 50 32 0 10 12 21.1 57 143 -63 51 4 20 49 59 48 51 9 10 49 55 1 -0.49 -157 0 0 50 29 49 10 12 16.7 58 145 -63 51 2 11 49 57 36 51 7 0 49 52 50 -0.49 -156 0 0 50 27 21 10 12 12.2 58 146 -63 50 59 43 49 55 7 51 4 33 49 50 20 -0.49 -155 0 0 50 24 35 10 12 7.8 58 148 -63 50 56 58 49 52 20 51 1 48 49 47 33 -0.49 -154 0 0 50 21 31 10 12 3.3 59 150 -63 50 53 56 49 49 15 50 58 46 49 44 28 -0.49 -153 0 0 50 18 9 10 11 58.8 59 151 -63 50 50 35 49 45 52 50 55 25 49 41 4 -0.49 -152 0 0 50 14 29 10 11 54.2 60 153 -63 50 46 57 49 42 10 50 51 47 49 37 23 -0.49 -151 0 0 50 10 32 10 11 49.7 60 155 -63 50 43 1 49 38 11 50 47 51 49 33 23 -0.49 -150 0 0 50 6 16 10 11 45.1 60 156 -63 50 38 47 49 33 54 50 43 38 49 29 6 -0.49 -149 0 0 50 1 42 10 11 40.5 60 158 -63 50 34 15 49 29 19 50 39 6 49 24 30 -0.49 -148 0 0 49 56 51 10 11 35.8 61 160 -63 50 29 25 49 24 25 50 34 17 49 19 37 -0.49 -147 0 0 49 51 41 10 11 31.2 61 162 -63 50 24 17 49 19 13 50 29 9 49 14 25 -0.49 -146 0 0 49 46 13 10 11 26.5 61 163 -63 50 18 51 49 13 43 50 23 43 49 8 54 -0.49 -145 0 0 49 40 27 10 11 21.8 62 165 -63 50 13 7 49 7 55 50 18 0 49 3 6 -0.49 -144 0 0 49 34 22 10 11 17.0 62 167 -63 50 7 5 49 1 48 50 11 58 48 56 59 -0.50 -143 0 0 49 28 0 10 11 12.2 62 169 -63 50 0 45 48 55 23 50 5 38 48 50 33 -0.50 -142 0 0 49 21 18 10 11 7.5 62 171 -63 49 54 6 48 48 40 49 59 0 48 43 49 -0.50 -141 0 0 49 14 19 10 11 2.6 63 173 -63 49 47 9 48 41 38 49 52 3 48 36 47 -0.50 -140 0 0 49 7 1 10 10 57.8 63 175 -62 49 39 54 48 34 17 49 44 48 48 29 26 -0.50 -139 0 0 48 59 24 10 10 52.9 63 177 -62 49 32 20 48 26 38 49 37 14 48 21 46 -0.50 -138 0 0 48 51 29 10 10 48.0 63 179 -62 49 24 27 48 18 40 49 29 22 48 13 48 -0.50 -137 0 0 48 43 15 10 10 43.1 63 181 -62 49 16 16 48 10 23 49 21 12 48 5 30 -0.50 -136 0 0 48 34 42 10 10 38.1 63 183 -62 49 7 46 48 1 47 49 12 42 47 56 54 -0.50 -135 0 0 48 25 50 10 10 33.1 63 185 -61 48 58 58 47 52 52 49 3 54 47 47 59 -0.50 -134 0 0 48 16 40 10 10 28.1 63 187 -61 48 49 51 47 43 39 48 54 47 47 38 45 -0.50 -133 0 0 48 7 10 10 10 23.1 64 189 -61 48 40 24 47 34 6 48 45 22 47 29 12 -0.50 -132 0 0 47 57 22 10 10 18.1 64 191 -60 48 30 39 47 24 14 48 35 37 47 19 20 -0.50 -131 0 0 47 47 14 10 10 13.0 64 193 -60 48 20 35 47 14 3 48 25 33 47 9 8 -0.50 -130 0 0 47 36 47 10 10 7.9 64 195 -60 48 10 11 47 3 33 48 15 10 46 58 37 -0.50 -129 0 0 47 26 1 10 10 2.7 64 198 -59 47 59 29 46 52 44 48 4 28 46 47 47 -0.50 -128 0 0 47 14 56 10 9 57.6 64 200 -59 47 48 27 46 41 35 47 53 27 46 36 38 -0.50 -127 0 0 47 3 31 10 9 52.4 64 202 -59 47 37 6 46 30 7 47 42 6 46 25 9 -0.50 -126 0 0 46 51 47 10 9 47.2 63 204 -58 47 25 25 46 18 19 47 30 26 46 13 21 -0.50 -125 0 0 46 39 43 10 9 41.9 63 206 -58 47 13 25 46 6 12 47 18 27 46 1 13 -0.50 -124 0 0 46 27 20 10 9 36.7 63 208 -58 47 1 6 45 53 45 47 6 8 45 48 46 -0.49 -123 0 0 46 14 37 10 9 31.4 63 210 -57 46 48 27 45 40 58 46 53 30 45 35 59 -0.49 -122 0 0 46 1 35 10 9 26.1 63 212 -57 46 35 28 45 27 52 46 40 32 45 22 52 -0.49 -121 0 0 45 48 13 10 9 20.7 63 214 -56 46 22 10 45 14 26 46 27 14 45 9 26 -0.49 -120 0 0 45 34 31 10 9 15.4 63 216 -56 46 8 32 45 0 41 46 13 37 44 55 40 -0.49 -119 0 0 45 20 30 10 9 10.0 62 218 -55 45 54 35 44 46 35 45 59 40 44 41 34 -0.49 -118 0 0 45 6 9 10 9 4.6 62 220 -55 45 40 17 44 32 10 45 45 23 44 27 8 -0.49 -117 0 0 44 51 28 10 8 59.2 62 222 -54 45 25 40 44 17 25 45 30 46 44 12 23 -0.49 -116 0 0 44 36 27 10 8 53.8 62 224 -54 45 10 44 44 2 21 45 15 50 43 57 17 -0.49 -115 0 0 44 21 6 10 8 48.3 61 226 -53 44 55 27 43 46 56 45 0 34 43 41 52 -0.49 -114 0 0 44 5 26 10 8 42.8 61 228 -53 44 39 50 43 31 12 44 44 58 43 26 7 -0.49 -113 0 0 43 49 26 10 8 37.4 61 230 -52 44 23 54 43 15 8 44 29 3 43 10 3 -0.49 -112 0 0 43 33 6 10 8 31.9 60 232 -51 44 7 38 42 58 44 44 12 47 42 53 38 -0.49 -111 0 0 43 16 26 10 8 26.3 60 234 -51 43 51 2 42 42 0 43 56 12 42 36 54 -0.49 -110 0 0 42 59 26 10 8 20.8 59 235 -50 43 34 7 42 24 57 43 39 17 42 19 50 -0.49 -109 0 0 42 42 7 10 8 15.3 59 237 -50 43 16 52 42 7 34 43 22 3 42 2 27 -0.49 -108 0 0 42 24 29 10 8 9.7 58 239 -49 42 59 17 41 49 52 43 4 28 41 44 44 -0.49 -107 0 0 42 6 30 10 8 4.1 58 241 -48 42 41 22 41 31 50 42 46 34 41 26 41 -0.49 -106 0 0 41 48 13 10 7 58.6 57 242 -48 42 23 8 41 13 28 42 28 21 41 8 19 -0.49 -105 0 0 41 29 35 10 7 53.0 57 244 -47 42 4 35 40 54 47 42 9 48 40 49 38 -0.49 -104 0 0 41 10 39 10 7 47.4 56 245 -46 41 45 42 40 35 47 41 50 56 40 30 37 -0.49 -103 0 0 40 51 23 10 7 41.8 56 247 -46 41 26 30 40 16 28 41 31 45 40 11 17 -0.49 -102 0 0 40 31 49 10 7 36.2 55 248 -45 41 6 59 39 56 50 41 12 14 39 51 39 -0.49 -101 0 0 40 11 55 10 7 30.6 55 250 -44 40 47 9 39 36 53 40 52 25 39 31 41 -0.49 -100 0 0 39 51 43 10 7 25.1 54 251 -44 40 27 1 39 16 37 40 32 16 39 11 25 -0.49 - 99 0 0 39 31 12 10 7 19.5 54 253 -43 40 6 33 38 56 3 40 11 49 38 50 50 -0.49 - 98 0 0 39 10 23 10 7 13.9 53 254 -42 39 45 47 38 35 10 39 51 4 38 29 57 -0.49 - 97 0 0 38 49 15 10 7 8.3 52 255 -41 39 24 43 38 13 59 39 30 0 38 8 46 -0.49 - 96 0 0 38 27 50 10 7 2.8 52 257 -41 39 3 20 37 52 31 39 8 38 37 47 16 -0.49 - 95 0 0 38 6 6 10 6 57.3 51 258 -40 38 41 40 37 30 44 38 46 59 37 25 30 -0.49 - 94 0 0 37 44 6 10 6 51.7 50 259 -39 38 19 42 37 8 40 38 25 1 37 3 25 -0.49 - 93 0 0 37 21 47 10 6 46.2 50 260 -38 37 57 27 36 46 20 38 2 47 36 41 4 -0.49 - 92 0 0 36 59 12 10 6 40.8 49 261 -38 37 34 55 36 23 42 37 40 15 36 18 26 -0.49 - 91 0 0 36 36 21 10 6 35.3 48 263 -37 37 12 6 36 0 48 37 17 26 35 55 31 -0.49 - 90 0 0 36 13 13 10 6 29.9 47 264 -36 36 49 1 35 37 37 36 54 21 35 32 20 -0.49 - 89 0 0 35 49 49 10 6 24.5 47 265 -35 36 25 39 35 14 11 36 31 0 35 8 54 -0.49 - 88 0 0 35 26 9 10 6 19.1 46 266 -34 36 2 2 34 50 29 36 7 23 34 45 11 -0.49 - 87 0 0 35 2 14 10 6 13.8 45 267 -33 35 38 9 34 26 31 35 43 30 34 21 14 -0.49 - 86 0 0 34 38 4 10 6 8.5 44 268 -33 35 14 1 34 2 20 35 19 23 33 57 2 -0.49 - 85 0 0 34 13 40 10 6 3.2 44 269 -32 34 49 39 33 37 53 34 55 1 33 32 35 -0.49 - 84 0 0 33 49 2 10 5 58.0 43 270 -31 34 25 2 33 13 13 34 30 25 33 7 55 -0.49 - 83 0 0 33 24 10 10 5 52.9 42 271 -30 34 0 12 32 48 20 34 5 35 32 43 1 -0.49 - 82 0 0 32 59 5 10 5 47.8 41 271 -29 33 35 8 32 23 13 33 40 31 32 17 54 -0.49 - 81 0 0 32 33 47 10 5 42.7 40 272 -28 33 9 52 31 57 54 33 15 15 31 52 35 -0.49 - 80 0 0 32 8 17 10 5 37.7 39 273 -27 32 44 23 31 32 23 32 49 46 31 27 3 -0.49 - 79 0 0 31 42 35 10 5 32.8 39 274 -26 32 18 43 31 6 40 32 24 6 31 1 20 -0.49 - 78 0 0 31 16 42 10 5 27.9 38 275 -25 31 52 51 30 40 46 31 58 14 30 35 27 -0.49 - 77 0 0 30 50 39 10 5 23.2 37 276 -25 31 26 48 30 14 42 31 32 12 30 9 22 -0.49 - 76 0 0 30 24 26 10 5 18.4 36 276 -24 31 0 36 29 48 28 31 5 59 29 43 8 -0.49 - 75 0 0 29 58 3 10 5 13.8 35 277 -23 30 34 13 29 22 5 30 39 37 29 16 45 -0.49 - 74 0 0 29 31 31 10 5 9.2 34 278 -22 30 7 42 28 55 33 30 13 6 28 50 13 -0.49 - 73 0 0 29 4 51 10 5 4.7 33 278 -21 29 41 2 28 28 53 29 46 26 28 23 33 -0.49 - 72 0 0 28 38 4 10 5 0.4 32 279 -20 29 14 15 28 2 5 29 19 39 27 56 45 -0.49 - 71 0 0 28 11 9 10 4 56.0 31 280 -19 28 47 20 27 35 11 28 52 44 27 29 51 -0.49 - 70 0 0 27 44 8 10 4 51.8 31 280 -18 28 20 19 27 8 10 28 25 43 27 2 50 -0.49 - 69 0 0 27 17 2 10 4 47.7 30 281 -17 27 53 12 26 41 4 27 58 36 26 35 44 -0.49 - 68 0 0 26 49 51 10 4 43.7 29 282 -16 27 26 0 26 13 53 27 31 24 26 8 34 -0.49 - 67 0 0 26 22 35 10 4 39.8 28 282 -15 26 58 43 25 46 38 27 4 7 25 41 19 -0.49 - 66 0 0 25 55 15 10 4 36.0 27 283 -14 26 31 23 25 19 20 26 36 47 25 14 0 -0.49 - 65 0 0 25 27 53 10 4 32.3 26 283 -13 26 4 0 24 51 59 26 9 23 24 46 39 -0.49 - 64 0 0 25 0 29 10 4 28.7 25 284 -12 25 36 34 24 24 35 25 41 57 24 19 16 -0.49 - 63 0 0 24 33 3 10 4 25.3 24 284 -11 25 9 7 23 57 11 25 14 30 23 51 52 -0.49 - 62 0 0 24 5 36 10 4 21.9 23 285 -10 24 41 39 23 29 46 24 47 1 23 24 27 -0.49 - 61 0 0 23 38 9 10 4 18.7 22 285 -9 24 14 10 23 2 20 24 19 33 22 57 2 -0.50 - 60 0 0 23 10 43 10 4 15.6 21 286 -8 23 46 42 22 34 56 23 52 5 22 29 38 -0.50 - 59 0 0 22 43 19 10 4 12.7 20 286 -7 23 19 16 22 7 34 23 24 38 22 2 16 -0.50 - 58 0 0 22 15 56 10 4 9.9 19 287 -6 22 51 52 21 40 13 22 57 13 21 34 56 -0.50 - 57 0 0 21 48 37 10 4 7.2 18 287 -5 22 24 30 21 12 56 22 29 51 21 7 39 -0.50 - 56 0 0 21 21 21 10 4 4.6 17 288 -4 21 57 12 20 45 43 22 2 33 20 40 26 -0.50 - 55 0 0 20 54 10 10 4 2.2 16 288 -3 21 29 58 20 18 34 21 35 19 20 13 17 -0.50 - 54 0 0 20 27 4 10 3 59.9 15 288 -2 21 2 50 19 51 30 21 8 10 19 46 14 -0.50 - 53 0 0 20 0 4 10 3 57.8 14 289 -1 20 35 47 19 24 33 20 41 6 19 19 17 -0.51 - 52 0 0 19 33 10 10 3 55.8 13 289 0 20 8 51 18 57 42 20 14 10 18 52 26 -0.51 - 51 0 0 19 6 24 10 3 54.0 12 289 1 19 42 1 18 30 59 19 47 20 18 25 44 -0.51 - 50 0 0 18 39 46 10 3 52.3 11 290 2 19 15 20 18 4 24 19 20 39 17 59 9 -0.51 - 49 0 0 18 13 17 10 3 50.7 10 290 3 18 48 48 17 37 58 18 54 6 17 32 43 -0.52 - 48 0 0 17 46 58 10 3 49.4 9 290 4 18 22 25 17 11 41 18 27 43 17 6 27 -0.52 - 47 0 0 17 20 48 10 3 48.1 8 291 5 17 56 13 16 45 35 18 1 30 16 40 22 -0.53 - 46 0 0 16 54 50 10 3 47.0 7 291 6 17 30 11 16 19 40 17 35 27 16 14 27 -0.54 - 45 0 0 16 29 3 10 3 46.1 5 291 7 17 4 21 15 53 57 17 9 37 15 48 45 -0.55 - 44 0 0 16 3 29 10 3 45.4 4 292 8 16 38 43 15 28 26 16 43 58 15 23 14 -0.57 - 43 0 0 15 38 8 10 3 44.8 3 292 9 16 13 18 15 3 8 16 18 33 14 57 57 -0.60 - 42 0 0 15 13 0 10 3 44.3 2 292 11 15 48 7 14 38 4 15 53 21 14 32 53 -0.65 - 41 0 0 14 48 7 10 3 44.0 1 292 12 15 23 10 14 13 15 15 28 24 14 8 4 -0.79 - 40 0 0 14 23 28 10 3 43.9 0 293 13 14 58 28 13 48 40 15 3 41 .. .. .. -2.24 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: TYC 1358-01648-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 17 19.6557 DE: +21 58 46.749 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 17 19.6557 DE: +21 58 46.749 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.3 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (140) Siwa asteroid class: approx. diameter [km]: 107 approx. diameter ["]: 0.064 distance from Earth [AU]: 2.30540 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#170 date of fit: 2022 Nov 25 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): 0.010", 0.005", 94.832° remarks: * orbital elements for (140)Siwa : Mean anomaly = 149.1498719234 deg Arg. of pericenter = 197.1800374985 deg Long. of node = 107.0727664034 deg Inclination = 3.1902023740 deg Eccentricity = 0.2166353053 Semimajor axis = 2.7335556498 AU Perihelion dist = 2.1413709869 AU Mag: H = 8.50, G = 0.15 Epoch of elements : MJD 60669.42371958 TDT (2024 Dec 25.4237) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1702022Nov25,7.20,2024,12,25,10.169219,0.082060,0.432106,-8.242569,1.565353,-0.001490,0.000231,0.000001,0.000000 -137.2448,21.9347,27.53,-23.37,False TYC 1358-01648-1,7.28879325,21.9796526,11.80,11.28,11.00,0.0,0,,7.31406556,21.9347063,2.14,2.00,0,0,0 140,Siwa,13.26,107.068,2.3054,0,0,-2.260,5.97,,5.8,0 0,149.0575,2024,12,25,197.1800,107.0728,3.1902,0.21664,2.73356,2.14137,8.50,5.0,0.15 1.074,0.0103,0.0047,95,0.0048,Known errors,0.91,0,-1,-1 20241225_1648-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org