IOTA/IOTA-ES occultation update for (140) Siwa / TYC 5562-00207-1 event on 2022 May 08, 06:05 UT Visible from South America Summary ------- On 2022 May 08 UT, the 107 km diameter asteroid (140) Siwa will occult a 10.7 mag star in the constellation Virgo for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.47 mag to 11.87 mag (the magnitude of the asteroid) for at most 10.180 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: 2022 May 08, 05:55 - 2022 May 08, 06:15 * geocentric midpoint of event [JD]: 2459707.75367046 * magnitude of target star: 10.73 * magnitude drop [mag]: 1.47 * estimated maximum duration [s]: 10.180 * Moon: 43 % sunlit, 86° distance * Sun: 167° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 109 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 4.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.036, +/- 0.015) * 1 sigma uncertainty ellipse (major, minor, PA): (0.038", 0.008", 110°) * approx speed of asteroid's shadow [km/s]: 10.5101 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5562-00207-1 by 140 Siwa on 2022 May 8 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 166 0 0 4 48 47 6 15 13.3 0 99 10 5 18 38 4 18 54 5 24 9 4 13 22 .... 167 0 0 4 39 11 6 15 13.1 1 99 9 5 9 3 4 9 16 5 14 34 4 3 44 0.16 168 0 0 4 29 17 6 15 12.8 2 99 8 4 59 11 3 59 21 5 4 42 3 53 48 0.17 169 0 0 4 19 6 6 15 12.3 3 99 7 4 49 1 3 49 8 4 54 32 3 43 36 0.17 170 0 0 4 8 38 6 15 11.6 4 99 6 4 38 34 3 38 39 4 44 6 3 33 6 0.18 171 0 0 3 57 54 6 15 10.7 5 99 5 4 27 51 3 27 53 4 33 23 3 22 20 0.18 172 0 0 3 46 52 6 15 9.6 6 99 4 4 16 51 3 16 51 4 22 24 3 11 17 0.18 173 0 0 3 35 35 6 15 8.3 7 99 3 4 5 35 3 5 32 4 11 8 2 59 58 0.18 174 0 0 3 24 1 6 15 6.9 8 99 2 3 54 3 2 53 57 3 59 36 2 48 23 0.18 175 0 0 3 12 12 6 15 5.2 9 100 1 3 42 15 2 42 6 3 47 48 2 36 31 0.18 176 0 0 3 0 6 6 15 3.4 10 100 0 3 30 11 2 29 59 3 35 44 2 24 24 0.18 177 0 0 2 47 46 6 15 1.3 11 100 -1 3 17 52 2 17 37 3 23 25 2 12 2 0.18 178 0 0 2 35 10 6 14 59.1 12 100 -2 3 5 17 2 4 59 3 10 51 1 59 24 0.18 179 0 0 2 22 19 6 14 56.7 13 100 -3 2 52 28 1 52 7 2 58 2 1 46 31 0.18 -180 0 0 2 9 13 6 14 54.1 14 100 -4 2 39 23 1 38 59 2 44 58 1 33 24 0.18 -179 0 0 1 55 52 6 14 51.3 15 100 -5 2 26 4 1 25 37 2 31 39 1 20 1 0.18 -178 0 0 1 42 18 6 14 48.3 16 100 -6 2 12 31 1 12 1 2 18 6 1 6 25 0.18 -177 0 0 1 28 29 6 14 45.1 17 100 -7 1 58 44 0 58 11 2 4 19 0 52 35 0.18 -176 0 0 1 14 26 6 14 41.8 18 100 -8 1 44 43 0 44 7 1 50 18 0 38 30 0.18 -175 0 0 1 0 10 6 14 38.3 19 100 -9 1 30 28 0 29 49 1 36 4 0 24 12 0.18 -174 0 0 0 45 41 6 14 34.6 20 100 -10 1 16 1 0 15 19 1 21 37 0 9 41 0.18 -173 0 0 0 30 59 6 14 30.7 21 100 -11 1 1 20 0 0 35 1 6 56 - 0 5 3 0.18 -172 0 0 0 16 4 6 14 26.6 22 100 -12 0 46 26 - 0 14 21 0 52 3 - 0 19 59 0.18 -171 0 0 0 0 57 6 14 22.3 23 100 -13 0 31 20 - 0 29 30 0 36 57 - 0 35 8 0.18 -170 0 0 - 0 14 23 6 14 17.9 24 100 -14 0 16 2 - 0 44 51 0 21 39 - 0 50 30 0.18 -169 0 0 - 0 29 54 6 14 13.3 25 100 -15 0 0 32 - 1 0 24 0 6 10 - 1 6 2 0.18 -168 0 0 - 0 45 37 6 14 8.5 26 100 -16 - 0 15 9 - 1 16 8 - 0 9 31 - 1 21 47 0.18 -167 0 0 - 1 1 31 6 14 3.6 27 99 -17 - 0 31 2 - 1 32 3 - 0 25 24 - 1 37 43 0.18 -166 0 0 - 1 17 36 6 13 58.4 28 99 -18 - 0 47 5 - 1 48 10 - 0 41 27 - 1 53 49 0.18 -165 0 0 - 1 33 51 6 13 53.1 29 99 -19 - 1 3 19 - 2 4 27 - 0 57 41 - 2 10 6 0.18 -164 0 0 - 1 50 17 6 13 47.7 30 99 -20 - 1 19 44 - 2 20 54 - 1 14 5 - 2 26 34 0.18 -163 0 0 - 2 6 53 6 13 42.0 31 99 -21 - 1 36 18 - 2 37 31 - 1 30 39 - 2 43 11 0.18 -162 0 0 - 2 23 38 6 13 36.3 32 99 -22 - 1 53 2 - 2 54 17 - 1 47 23 - 2 59 58 0.18 -161 0 0 - 2 40 33 6 13 30.3 33 99 -23 - 2 9 55 - 3 11 13 - 2 4 16 - 3 16 54 0.18 -160 0 0 - 2 57 36 6 13 24.2 34 99 -24 - 2 26 58 - 3 28 18 - 2 21 18 - 3 33 59 0.18 -159 0 0 - 3 14 48 6 13 17.9 36 99 -25 - 2 44 9 - 3 45 31 - 2 38 29 - 3 51 12 0.18 -158 0 0 - 3 32 9 6 13 11.5 37 98 -26 - 3 1 28 - 4 2 53 - 2 55 48 - 4 8 34 0.18 -157 0 0 - 3 49 37 6 13 4.9 38 98 -27 - 3 18 55 - 4 20 22 - 3 13 15 - 4 26 3 0.18 -156 0 0 - 4 7 13 6 12 58.2 39 98 -28 - 3 36 30 - 4 37 59 - 3 30 49 - 4 43 41 0.18 -155 0 0 - 4 24 56 6 12 51.3 40 98 -29 - 3 54 12 - 4 55 43 - 3 48 31 - 5 1 25 0.18 -154 0 0 - 4 42 46 6 12 44.3 41 98 -30 - 4 12 1 - 5 13 34 - 4 6 20 - 5 19 16 0.18 -153 0 0 - 5 0 42 6 12 37.2 42 97 -31 - 4 29 56 - 5 31 31 - 4 24 15 - 5 37 13 0.18 -152 0 0 - 5 18 44 6 12 29.9 43 97 -32 - 4 47 57 - 5 49 35 - 4 42 16 - 5 55 17 0.18 -151 0 0 - 5 36 53 6 12 22.4 43 97 -33 - 5 6 5 - 6 7 44 - 5 0 23 - 6 13 26 0.18 -150 0 0 - 5 55 6 6 12 14.9 44 97 -34 - 5 24 18 - 6 25 58 - 5 18 36 - 6 31 41 0.18 -149 0 0 - 6 13 25 6 12 7.2 45 96 -35 - 5 42 35 - 6 44 18 - 5 36 54 - 6 50 0 0.18 -148 0 0 - 6 31 48 6 11 59.4 46 96 -36 - 6 0 58 - 7 2 42 - 5 55 16 - 7 8 25 0.18 -147 0 0 - 6 50 16 6 11 51.4 47 96 -37 - 6 19 25 - 7 21 10 - 6 13 43 - 7 26 53 0.18 -146 0 0 - 7 8 47 6 11 43.4 48 95 -38 - 6 37 55 - 7 39 42 - 6 32 13 - 7 45 25 0.18 -145 0 0 - 7 27 22 6 11 35.2 49 95 -39 - 6 56 30 - 7 58 17 - 6 50 47 - 8 4 1 0.18 -144 0 0 - 7 46 0 6 11 26.9 50 95 -40 - 7 15 7 - 8 16 56 - 7 9 25 - 8 22 40 0.18 -143 0 0 - 8 4 41 6 11 18.5 51 94 -41 - 7 33 47 - 8 35 37 - 7 28 5 - 8 41 21 0.18 -142 0 0 - 8 23 24 6 11 10.0 52 94 -42 - 7 52 30 - 8 54 21 - 7 46 48 - 9 0 5 0.18 -141 0 0 - 8 42 9 6 11 1.3 53 93 -43 - 8 11 15 - 9 13 7 - 8 5 32 - 9 18 51 0.18 -140 0 0 - 9 0 56 6 10 52.6 54 93 -44 - 8 30 1 - 9 31 54 - 8 24 19 - 9 37 38 0.18 -139 0 0 - 9 19 44 6 10 43.8 55 92 -45 - 8 48 49 - 9 50 42 - 8 43 6 - 9 56 26 0.18 -138 0 0 - 9 38 33 6 10 34.9 56 92 -46 - 9 7 38 -10 9 32 - 9 1 55 -10 15 16 0.18 -137 0 0 - 9 57 23 6 10 25.9 57 91 -47 - 9 26 27 -10 28 21 - 9 20 44 -10 34 6 0.18 -136 0 0 -10 16 12 6 10 16.8 58 90 -48 - 9 45 16 -10 47 11 - 9 39 33 -10 52 55 0.18 -135 0 0 -10 35 2 6 10 7.7 59 90 -49 -10 4 5 -11 6 1 - 9 58 23 -11 11 45 0.18 -134 0 0 -10 53 50 6 9 58.4 60 89 -50 -10 22 54 -11 24 50 -10 17 11 -11 30 34 0.18 -133 0 0 -11 12 38 6 9 49.1 61 88 -51 -10 41 42 -11 43 38 -10 35 59 -11 49 22 0.18 -132 0 0 -11 31 25 6 9 39.7 62 87 -52 -11 0 28 -12 2 24 -10 54 45 -12 8 8 0.18 -131 0 0 -11 50 9 6 9 30.2 63 87 -53 -11 19 13 -12 21 9 -11 13 30 -12 26 53 0.19 -130 0 0 -12 8 52 6 9 20.7 64 86 -54 -11 37 56 -12 39 51 -11 32 13 -12 45 35 0.19 -129 0 0 -12 27 32 6 9 11.1 65 85 -55 -11 56 36 -12 58 31 -11 50 53 -13 4 15 0.19 -128 0 0 -12 46 10 6 9 1.5 65 83 -56 -12 15 14 -13 17 9 -12 9 31 -13 22 53 0.19 -127 0 0 -13 4 44 6 8 51.8 66 82 -57 -12 33 48 -13 35 43 -12 28 6 -13 41 27 0.19 -126 0 0 -13 23 15 6 8 42.0 67 81 -58 -12 52 19 -13 54 13 -12 46 37 -13 59 57 0.19 -125 0 0 -13 41 42 6 8 32.2 68 80 -59 -13 10 47 -14 12 40 -13 5 4 -14 18 24 0.19 -124 0 0 -14 0 4 6 8 22.4 69 78 -60 -13 29 10 -14 31 2 -13 23 27 -14 36 46 0.19 -123 0 0 -14 18 23 6 8 12.5 70 77 -61 -13 47 29 -14 49 20 -13 41 46 -14 55 4 0.19 -122 0 0 -14 36 36 6 8 2.6 71 75 -62 -14 5 42 -15 7 33 -14 0 0 -15 13 16 0.19 -121 0 0 -14 54 44 6 7 52.7 71 73 -63 -14 23 51 -15 25 40 -14 18 9 -15 31 24 0.19 -120 0 0 -15 12 47 6 7 42.7 72 71 -64 -14 41 54 -15 43 42 -14 36 12 -15 49 26 0.19 -119 0 0 -15 30 44 6 7 32.7 73 69 -65 -14 59 52 -16 1 39 -14 54 10 -16 7 22 0.19 -118 0 0 -15 48 34 6 7 22.7 74 67 -66 -15 17 43 -16 19 29 -15 12 1 -16 25 12 0.19 -117 0 0 -16 6 18 6 7 12.7 74 64 -67 -15 35 28 -16 37 12 -15 29 46 -16 42 55 0.19 -116 0 0 -16 23 56 6 7 2.6 75 61 -68 -15 53 6 -16 54 49 -15 47 24 -17 0 32 0.19 -115 0 0 -16 41 26 6 6 52.6 76 58 -69 -16 10 37 -17 12 18 -16 4 56 -17 18 1 0.19 -114 0 0 -16 58 49 6 6 42.5 76 55 -69 -16 28 1 -17 29 40 -16 22 20 -17 35 23 0.19 -113 0 0 -17 16 4 6 6 32.4 77 52 -70 -16 45 17 -17 46 55 -16 39 36 -17 52 37 0.19 -112 0 0 -17 33 12 6 6 22.4 77 48 -71 -17 2 25 -18 4 1 -16 56 44 -18 9 43 0.19 -111 0 0 -17 50 11 6 6 12.3 78 44 -72 -17 19 25 -18 20 59 -17 13 44 -18 26 41 0.19 -110 0 0 -18 7 1 6 6 2.2 78 39 -73 -17 36 17 -18 37 49 -17 30 36 -18 43 31 0.19 -109 0 0 -18 23 43 6 5 52.2 79 34 -74 -17 53 0 -18 54 29 -17 47 19 -19 0 11 0.19 -108 0 0 -18 40 16 6 5 42.1 79 29 -75 -18 9 33 -19 11 1 -18 3 53 -19 16 43 0.19 -107 0 0 -18 56 39 6 5 32.1 79 24 -76 -18 25 58 -19 27 23 -18 20 18 -19 33 5 0.19 -106 0 0 -19 12 53 6 5 22.1 79 19 -77 -18 42 13 -19 43 36 -18 36 33 -19 49 17 0.19 -105 0 0 -19 28 57 6 5 12.1 79 14 -78 -18 58 18 -19 59 39 -18 52 38 -20 5 20 0.19 -104 0 0 -19 44 51 6 5 2.1 79 9 -78 -19 14 13 -20 15 31 -19 8 33 -20 21 12 0.19 -103 0 0 -20 0 34 6 4 52.2 79 3 -79 -19 29 58 -20 31 14 -19 24 18 -20 36 54 0.19 -102 0 0 -20 16 7 6 4 42.3 79 359 -80 -19 45 32 -20 46 46 -19 39 53 -20 52 26 0.19 -101 0 0 -20 31 30 6 4 32.4 78 354 -81 -20 0 56 -21 2 7 -19 55 17 -21 7 47 0.19 -100 0 0 -20 46 41 6 4 22.6 78 349 -81 -20 16 8 -21 17 17 -20 10 30 -21 22 57 0.19 - 99 0 0 -21 1 41 6 4 12.8 77 345 -82 -20 31 10 -21 32 16 -20 25 31 -21 37 55 0.19 - 98 0 0 -21 16 30 6 4 3.0 77 341 -83 -20 46 0 -21 47 3 -20 40 22 -21 52 42 0.19 - 97 0 0 -21 31 7 6 3 53.3 76 338 -83 -21 0 38 -22 1 39 -20 55 0 -22 7 18 0.19 - 96 0 0 -21 45 32 6 3 43.6 76 335 -84 -21 15 5 -22 16 3 -21 9 27 -22 21 42 0.19 - 95 0 0 -21 59 46 6 3 34.0 75 332 -84 -21 29 20 -22 30 15 -21 23 42 -22 35 53 0.19 - 94 0 0 -22 13 47 6 3 24.4 75 329 -84 -21 43 22 -22 44 14 -21 37 45 -22 49 53 0.19 - 93 0 0 -22 27 35 6 3 14.9 74 326 -84 -21 57 12 -22 58 2 -21 51 36 -23 3 40 0.19 - 92 0 0 -22 41 12 6 3 5.4 73 324 -84 -22 10 50 -23 11 37 -22 5 13 -23 17 14 0.19 - 91 0 0 -22 54 35 6 2 56.0 73 321 -84 -22 24 15 -23 24 59 -22 18 39 -23 30 36 0.19 - 90 0 0 -23 7 46 6 2 46.7 72 319 -84 -22 37 27 -23 38 8 -22 31 51 -23 43 45 0.19 - 89 0 0 -23 20 44 6 2 37.4 71 317 -83 -22 50 26 -23 51 4 -22 44 50 -23 56 41 0.19 - 88 0 0 -23 33 28 6 2 28.1 70 316 -83 -23 3 12 -24 3 47 -22 57 37 -24 9 24 0.19 - 87 0 0 -23 45 59 6 2 18.9 70 314 -82 -23 15 45 -24 16 17 -23 10 10 -24 21 53 0.19 - 86 0 0 -23 58 17 6 2 9.8 69 312 -81 -23 28 4 -24 28 33 -23 22 29 -24 34 9 0.19 - 85 0 0 -24 10 21 6 2 0.8 68 311 -81 -23 40 9 -24 40 36 -23 34 35 -24 46 12 0.19 - 84 0 0 -24 22 11 6 1 51.8 67 309 -80 -23 52 1 -24 52 25 -23 46 27 -24 58 0 0.19 - 83 0 0 -24 33 48 6 1 42.9 66 308 -79 -24 3 39 -25 4 0 -23 58 5 -25 9 35 0.19 - 82 0 0 -24 45 10 6 1 34.1 66 307 -78 -24 15 3 -25 15 21 -24 9 29 -25 20 56 0.19 - 81 0 0 -24 56 18 6 1 25.4 65 306 -78 -24 26 12 -25 26 27 -24 20 39 -25 32 2 0.19 - 80 0 0 -25 7 12 6 1 16.7 64 305 -77 -24 37 8 -25 37 20 -24 31 35 -25 42 55 0.19 - 79 0 0 -25 17 52 6 1 8.1 63 303 -76 -24 47 49 -25 47 58 -24 42 16 -25 53 33 0.19 - 78 0 0 -25 28 17 6 0 59.6 62 302 -75 -24 58 16 -25 58 22 -24 52 43 -26 3 56 0.19 - 77 0 0 -25 38 28 6 0 51.1 61 301 -74 -25 8 28 -26 8 31 -25 2 55 -26 14 5 0.19 - 76 0 0 -25 48 24 6 0 42.8 61 300 -73 -25 18 25 -26 18 26 -25 12 53 -26 23 59 0.19 - 75 0 0 -25 58 5 6 0 34.5 60 299 -73 -25 28 7 -26 28 6 -25 22 35 -26 33 39 0.19 - 74 0 0 -26 7 31 6 0 26.3 59 299 -72 -25 37 35 -26 37 30 -25 32 3 -26 43 3 0.19 - 73 0 0 -26 16 43 6 0 18.2 58 298 -71 -25 46 48 -26 46 40 -25 41 16 -26 52 13 0.19 - 72 0 0 -26 25 39 6 0 10.2 57 297 -70 -25 55 45 -26 55 35 -25 50 14 -27 1 8 0.19 - 71 0 0 -26 34 20 6 0 2.3 56 296 -69 -26 4 28 -27 4 15 -25 58 57 -27 9 48 0.19 - 70 0 0 -26 42 46 5 59 54.4 56 295 -68 -26 12 55 -27 12 40 -26 7 24 -27 18 12 0.19 - 69 0 0 -26 50 57 5 59 46.7 55 294 -68 -26 21 7 -27 20 49 -26 15 36 -27 26 21 0.19 - 68 0 0 -26 58 52 5 59 39.0 54 294 -67 -26 29 3 -27 28 43 -26 23 33 -27 34 15 0.19 - 67 0 0 -27 6 32 5 59 31.5 53 293 -66 -26 36 44 -27 36 22 -26 31 14 -27 41 53 0.19 - 66 0 0 -27 13 56 5 59 24.0 52 292 -65 -26 44 10 -27 43 45 -26 38 40 -27 49 16 0.19 - 65 0 0 -27 21 5 5 59 16.6 51 292 -64 -26 51 20 -27 50 53 -26 45 50 -27 56 24 0.19 - 64 0 0 -27 27 58 5 59 9.3 51 291 -63 -26 58 14 -27 57 45 -26 52 45 -28 3 16 0.19 - 63 0 0 -27 34 35 5 59 2.1 50 290 -62 -27 4 53 -28 4 21 -26 59 23 -28 9 52 0.19 - 62 0 0 -27 40 57 5 58 55.1 49 289 -62 -27 11 15 -28 10 42 -27 5 46 -28 16 12 0.19 - 61 0 0 -27 47 3 5 58 48.1 48 289 -61 -27 17 22 -28 16 47 -27 11 53 -28 22 17 0.19 - 60 0 0 -27 52 53 5 58 41.2 47 288 -60 -27 23 13 -28 22 36 -27 17 45 -28 28 6 0.19 - 59 0 0 -27 58 27 5 58 34.4 46 288 -59 -27 28 48 -28 28 9 -27 23 20 -28 33 39 0.19 - 58 0 0 -28 3 45 5 58 27.7 45 287 -58 -27 34 7 -28 33 26 -27 28 39 -28 38 56 0.19 - 57 0 0 -28 8 47 5 58 21.1 45 286 -57 -27 39 10 -28 38 27 -27 33 42 -28 43 57 0.19 - 56 0 0 -28 13 34 5 58 14.6 44 286 -56 -27 43 57 -28 43 13 -27 38 29 -28 48 42 0.19 - 55 0 0 -28 18 3 5 58 8.3 43 285 -56 -27 48 28 -28 47 42 -27 43 0 -28 53 11 0.19 - 54 0 0 -28 22 17 5 58 2.0 42 284 -55 -27 52 43 -28 51 55 -27 47 15 -28 57 24 0.19 - 53 0 0 -28 26 15 5 57 55.8 41 284 -54 -27 56 41 -28 55 52 -27 51 13 -29 1 21 0.19 - 52 0 0 -28 29 56 5 57 49.8 40 283 -53 -28 0 23 -28 59 32 -27 54 55 -29 5 1 0.19 - 51 0 0 -28 33 21 5 57 43.8 40 283 -52 -28 3 49 -29 2 57 -27 58 21 -29 8 25 0.19 - 50 0 0 -28 36 30 5 57 38.0 39 282 -51 -28 6 58 -29 6 5 -28 1 31 -29 11 33 0.19 - 49 0 0 -28 39 22 5 57 32.2 38 282 -50 -28 9 51 -29 8 57 -28 4 24 -29 14 25 0.19 - 48 0 0 -28 41 58 5 57 26.6 37 281 -50 -28 12 27 -29 11 32 -28 7 0 -29 17 1 0.19 - 47 0 0 -28 44 18 5 57 21.1 36 280 -49 -28 14 47 -29 13 51 -28 9 20 -29 19 20 0.19 - 46 0 0 -28 46 21 5 57 15.7 35 280 -48 -28 16 51 -29 15 54 -28 11 24 -29 21 22 0.19 - 45 0 0 -28 48 8 5 57 10.4 34 279 -47 -28 18 38 -29 17 40 -28 13 11 -29 23 9 0.19 - 44 0 0 -28 49 38 5 57 5.2 34 279 -46 -28 20 9 -29 19 10 -28 14 42 -29 24 38 0.19 - 43 0 0 -28 50 52 5 57 0.1 33 278 -45 -28 21 22 -29 20 24 -28 15 56 -29 25 52 0.19 - 42 0 0 -28 51 49 5 56 55.2 32 278 -44 -28 22 20 -29 21 20 -28 16 53 -29 26 48 0.19 - 41 0 0 -28 52 29 5 56 50.3 31 277 -44 -28 23 0 -29 22 1 -28 17 33 -29 27 28 0.19 - 40 0 0 -28 52 53 5 56 45.6 30 277 -43 -28 23 24 -29 22 24 -28 17 57 -29 27 52 0.19 - 39 0 0 -28 53 0 5 56 41.0 29 276 -42 -28 23 31 -29 22 31 -28 18 5 -29 27 59 0.19 - 38 0 0 -28 52 50 5 56 36.5 28 276 -41 -28 23 22 -29 22 22 -28 17 55 -29 27 49 0.19 - 37 0 0 -28 52 24 5 56 32.2 28 275 -40 -28 22 55 -29 21 55 -28 17 29 -29 27 23 0.19 - 36 0 0 -28 51 41 5 56 27.9 27 275 -39 -28 22 12 -29 21 12 -28 16 46 -29 26 40 0.19 - 35 0 0 -28 50 41 5 56 23.8 26 274 -38 -28 21 12 -29 20 13 -28 15 46 -29 25 40 0.19 - 34 0 0 -28 49 24 5 56 19.8 25 274 -38 -28 19 56 -29 18 56 -28 14 29 -29 24 24 0.19 - 33 0 0 -28 47 51 5 56 15.9 24 273 -37 -28 18 22 -29 17 23 -28 12 55 -29 22 51 0.19 - 32 0 0 -28 46 1 5 56 12.1 23 273 -36 -28 16 31 -29 15 33 -28 11 5 -29 21 1 0.19 - 31 0 0 -28 43 54 5 56 8.5 22 272 -35 -28 14 24 -29 13 26 -28 8 57 -29 18 54 0.19 - 30 0 0 -28 41 30 5 56 5.0 22 272 -34 -28 12 0 -29 11 3 -28 6 33 -29 16 31 0.19 - 29 0 0 -28 38 49 5 56 1.6 21 271 -33 -28 9 19 -29 8 22 -28 3 52 -29 13 51 0.19 - 28 0 0 -28 35 51 5 55 58.4 20 271 -32 -28 6 20 -29 5 25 -28 0 53 -29 10 53 0.19 - 27 0 0 -28 32 37 5 55 55.2 19 270 -32 -28 3 5 -29 2 11 -27 57 38 -29 7 39 0.19 - 26 0 0 -28 29 5 5 55 52.2 18 270 -31 -27 59 33 -28 58 40 -27 54 6 -29 4 9 0.19 - 25 0 0 -28 25 17 5 55 49.4 17 269 -30 -27 55 44 -28 54 52 -27 50 17 -29 0 21 0.19 - 24 0 0 -28 21 12 5 55 46.6 16 269 -29 -27 51 38 -28 50 48 -27 46 11 -28 56 16 0.19 - 23 0 0 -28 16 49 5 55 44.1 16 268 -28 -27 47 15 -28 46 26 -27 41 47 -28 51 55 0.19 - 22 0 0 -28 12 10 5 55 41.6 15 268 -27 -27 42 35 -28 41 48 -27 37 7 -28 47 17 0.20 - 21 0 0 -28 7 14 5 55 39.3 14 267 -26 -27 37 38 -28 36 52 -27 32 10 -28 42 21 0.20 - 20 0 0 -28 2 1 5 55 37.1 13 267 -25 -27 32 24 -28 31 40 -27 26 56 -28 37 9 0.20 - 19 0 0 -27 56 30 5 55 35.0 12 266 -25 -27 26 53 -28 26 11 -27 21 25 -28 31 40 0.20 - 18 0 0 -27 50 43 5 55 33.1 11 266 -24 -27 21 5 -28 20 24 -27 15 36 -28 25 54 0.20 - 17 0 0 -27 44 39 5 55 31.3 10 265 -23 -27 15 0 -28 14 21 -27 9 31 -28 19 51 0.20 - 16 0 0 -27 38 18 5 55 29.7 9 265 -22 -27 8 38 -28 8 1 -27 3 9 -28 13 31 0.20 - 15 0 0 -27 31 40 5 55 28.2 8 264 -21 -27 1 59 -28 1 24 -26 56 30 -28 6 55 0.20 - 14 0 0 -27 24 45 5 55 26.9 8 264 -20 -26 55 3 -27 54 31 -26 49 33 -28 0 1 0.20 - 13 0 0 -27 17 33 5 55 25.7 7 263 -19 -26 47 50 -27 47 20 -26 42 20 -27 52 50 0.21 - 12 0 0 -27 10 5 5 55 24.6 6 263 -18 -26 40 20 -27 39 52 -26 34 50 -27 45 23 0.21 - 11 0 0 -27 2 19 5 55 23.7 5 263 -17 -26 32 33 -27 32 8 -26 27 3 -27 37 39 0.21 - 10 0 0 -26 54 16 5 55 22.9 4 262 -17 -26 24 29 -27 24 7 -26 18 59 -27 29 38 0.22 - 9 0 0 -26 45 57 5 55 22.3 3 262 -16 -26 16 8 -27 15 49 -26 10 38 -27 21 20 0.23 - 8 0 0 -26 37 21 5 55 21.9 2 261 -15 -26 7 31 -27 7 14 -26 2 0 -27 12 46 0.25 - 7 0 0 -26 28 28 5 55 21.6 1 261 -14 -25 58 36 -26 58 22 -25 53 5 -27 3 54 0.30 - 6 0 0 -26 19 18 5 55 21.4 0 260 -13 -25 49 25 -26 49 14 -25 43 54 -26 54 46 0.56 Uncertainty in time = +/- 4 secs Prediction of 2022 Apr 15.8 Data for the target star ------------------------ * name: TYC 5562-00207-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 18 33.6389 DE: -08 45 17.643 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 18 33.6389 DE: -08 45 17.643 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (140) Siwa asteroid class: approx. diameter [km]: 107 approx. diameter ["]: 0.095 distance from Earth [AU]: 1.55900 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#165 date of fit: 2022 Apr 11 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): 0.038", 0.008", 109.754° remarks: * orbital elements for (140)Siwa : Mean anomaly = 299.7000084499 deg Arg. of pericenter = 196.9772157971 deg Long. of node = 107.1699929238 deg Inclination = 3.1853164731 deg Eccentricity = 0.2141143820 Semimajor axis = 2.7338237111 AU Perihelion dist = 2.1484727367 AU Mag: H = 8.53, G = 0.15 Epoch of elements : MJD 59707.25368056 TDT (2022 May 08.2537) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1652022Apr11,10.18,2022,5,8,6.088091,-0.050488,-0.180144,-5.712276,1.600335,0.000973,-0.000821,0.000001,0.000000 -102.4362,-8.8584,87.82,17.10,False TYC 5562-00207-1,14.30934413,-8.7549008,0.00,10.73,0.00,0.0,0,,14.32925224,-8.8583587,1.47,0.00,0,0,0 140,Siwa,11.87,107.0,1.5590,0,0,-2.173,9.02,,5.8 0,299.6447,2022,5,8,196.9772,107.1700,3.1853,0.21411,2.73382,2.14847,8.45,5.0,0.15 1.092,0.0380,0.0083,110,0.0087,Known errors,-1.00,-1,-1,-1 20220508_0207-1,59684.83 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Apr 15, 19:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org