IOTA/IOTA-ES occultation update for (1023) Thomana / TYC 0225-00996-1 event on 2022 Oct 29, 22:09 UT Visible from China, SW Asia Summary ------- On 2022 Oct 29 UT, the 59.3 km diameter asteroid (1023) Thomana will occult a 11.8 mag star in the constellation Cancer for observers along a path across China, SW Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.15 mag to 15.88 mag (the magnitude of the asteroid) for at most 3.070 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: 2022 Oct 29, 22:04 - 2022 Oct 29, 22:15 * geocentric midpoint of event [JD]: 2459882.42344862 * magnitude of target star: 11.75 * magnitude drop [mag]: 4.15 * estimated maximum duration [s]: 3.070 * Moon: 23 % sunlit, 138° distance * Sun: 83° distance * rough path description: China, SW Asia The occultation path -------------------- * approximate projected width [km]: 60 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.004", 98°) * approx speed of asteroid's shadow [km/s]: 19.3000 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0225-00996-1 by 1023 Thomana on 2022 Oct 29 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 29 0 0 37 9 45 22 4 21.0 0 81 -66 36 53 16 37 26 15 36 45 42 37 33 50 .... 30 0 0 37 17 0 22 4 21.1 1 82 -66 37 0 31 37 33 29 36 52 58 37 41 2 -0.16 31 0 0 37 23 50 22 4 21.2 2 82 -66 37 7 23 37 40 18 36 59 50 37 47 51 -0.17 32 0 0 37 30 16 22 4 21.3 2 83 -65 37 13 50 37 46 43 37 6 18 37 54 16 -0.17 33 0 0 37 36 18 22 4 21.6 3 84 -65 37 19 53 37 52 44 37 12 22 38 0 16 -0.17 34 0 0 37 41 57 22 4 21.9 4 84 -65 37 25 33 37 58 21 37 18 2 38 5 53 -0.17 35 0 0 37 47 11 22 4 22.3 5 85 -64 37 30 48 38 3 35 37 23 18 38 11 6 -0.17 36 0 0 37 52 1 22 4 22.7 6 85 -64 37 35 39 38 8 24 37 28 9 38 15 55 -0.17 37 0 0 37 56 28 22 4 23.2 6 86 -63 37 40 7 38 12 50 37 32 37 38 20 21 -0.18 38 0 0 38 0 31 22 4 23.7 7 87 -63 37 44 10 38 16 52 37 36 41 38 24 22 -0.18 39 0 0 38 4 9 22 4 24.4 8 87 -63 37 47 49 38 20 30 37 40 20 38 28 0 -0.18 40 0 0 38 7 24 22 4 25.0 9 88 -62 37 51 5 38 23 45 37 43 36 38 31 14 -0.18 41 0 0 38 10 16 22 4 25.8 10 89 -62 37 53 57 38 26 35 37 46 28 38 34 5 -0.18 42 0 0 38 12 43 22 4 26.6 10 89 -61 37 56 25 38 29 2 37 48 56 38 36 32 -0.18 43 0 0 38 14 47 22 4 27.5 11 90 -61 37 58 29 38 31 6 37 51 1 38 38 35 -0.18 44 0 0 38 16 27 22 4 28.4 12 90 -60 38 0 9 38 32 45 37 52 41 38 40 14 -0.18 45 0 0 38 17 43 22 4 29.4 13 91 -60 38 1 25 38 34 1 37 53 57 38 41 30 -0.18 46 0 0 38 18 35 22 4 30.5 14 92 -59 38 2 18 38 34 53 37 54 50 38 42 22 -0.18 47 0 0 38 19 3 22 4 31.6 14 92 -58 38 2 46 38 35 21 37 55 18 38 42 50 -0.18 48 0 0 38 19 8 22 4 32.8 15 93 -58 38 2 51 38 35 26 37 55 23 38 42 55 -0.18 49 0 0 38 18 49 22 4 34.0 16 94 -57 38 2 32 38 35 7 37 55 4 38 42 35 -0.17 50 0 0 38 18 6 22 4 35.3 17 94 -57 38 1 49 38 34 24 37 54 21 38 41 53 -0.17 51 0 0 38 16 59 22 4 36.7 18 95 -56 38 0 41 38 33 17 37 53 14 38 40 46 -0.17 52 0 0 38 15 28 22 4 38.1 18 95 -56 37 59 10 38 31 47 37 51 42 38 39 15 -0.17 53 0 0 38 13 33 22 4 39.6 19 96 -55 37 57 15 38 29 52 37 49 47 38 37 21 -0.17 54 0 0 38 11 15 22 4 41.2 20 97 -54 37 54 56 38 27 34 37 47 28 38 35 3 -0.17 55 0 0 38 8 32 22 4 42.8 21 97 -54 37 52 13 38 24 51 37 44 45 38 32 21 -0.17 56 0 0 38 5 25 22 4 44.5 22 98 -53 37 49 6 38 21 45 37 41 37 38 29 15 -0.17 57 0 0 38 1 54 22 4 46.2 22 99 -52 37 45 34 38 18 15 37 38 5 38 25 45 -0.17 58 0 0 37 57 59 22 4 48.0 23 99 -52 37 41 38 38 14 20 37 34 9 38 21 50 -0.17 59 0 0 37 53 39 22 4 49.9 24 100 -51 37 37 18 38 10 2 37 29 49 38 17 32 -0.17 60 0 0 37 48 56 22 4 51.8 25 101 -50 37 32 34 38 5 19 37 25 4 38 12 50 -0.17 61 0 0 37 43 48 22 4 53.8 25 101 -50 37 27 25 38 0 12 37 19 54 38 7 43 -0.17 62 0 0 37 38 15 22 4 55.9 26 102 -49 37 21 51 37 54 40 37 14 20 38 2 12 -0.17 63 0 0 37 32 18 22 4 58.0 27 103 -48 37 15 53 37 48 44 37 8 22 37 56 16 -0.17 64 0 0 37 25 57 22 5 0.2 28 103 -48 37 9 31 37 42 23 37 1 59 37 49 56 -0.17 65 0 0 37 19 10 22 5 2.4 29 104 -47 37 2 43 37 35 38 36 55 11 37 43 12 -0.17 66 0 0 37 11 59 22 5 4.7 30 104 -46 36 55 31 37 28 29 36 47 58 37 36 2 -0.17 67 0 0 37 4 23 22 5 7.1 30 105 -46 36 47 54 37 20 54 36 40 20 37 28 28 -0.17 68 0 0 36 56 23 22 5 9.6 31 106 -45 36 39 52 37 12 55 36 32 18 37 20 30 -0.17 69 0 0 36 47 57 22 5 12.1 32 106 -44 36 31 25 37 4 30 36 23 50 37 12 6 -0.17 70 0 0 36 39 6 22 5 14.7 33 107 -44 36 22 32 36 55 41 36 14 57 37 3 17 -0.17 71 0 0 36 29 50 22 5 17.3 34 108 -43 36 13 15 36 46 26 36 5 39 36 54 3 -0.17 72 0 0 36 20 9 22 5 20.1 34 108 -42 36 3 32 36 36 46 35 55 55 36 44 24 -0.17 73 0 0 36 10 2 22 5 22.8 35 109 -41 35 53 23 36 26 41 35 45 46 36 34 20 -0.17 74 0 0 35 59 30 22 5 25.7 36 110 -41 35 42 49 36 16 11 35 35 11 36 23 50 -0.17 75 0 0 35 48 32 22 5 28.6 37 110 -40 35 31 50 36 5 15 35 24 11 36 12 55 -0.17 76 0 0 35 37 8 22 5 31.6 38 111 -39 35 20 24 35 53 53 35 12 45 36 1 34 -0.17 77 0 0 35 25 19 22 5 34.7 39 112 -38 35 8 33 35 42 6 35 0 53 35 49 48 -0.17 78 0 0 35 13 4 22 5 37.9 39 113 -37 34 56 16 35 29 53 34 48 35 35 37 36 -0.17 79 0 0 35 0 23 22 5 41.1 40 113 -37 34 43 33 35 17 14 34 35 51 35 24 57 -0.17 80 0 0 34 47 16 22 5 44.4 41 114 -36 34 30 24 35 4 9 34 22 41 35 11 53 -0.17 81 0 0 34 33 43 22 5 47.7 42 115 -35 34 16 49 34 50 38 34 9 5 34 58 23 -0.17 82 0 0 34 19 44 22 5 51.2 43 115 -34 34 2 48 34 36 41 33 55 2 34 44 27 -0.17 83 0 0 34 5 18 22 5 54.7 44 116 -34 33 48 20 34 22 17 33 40 33 34 30 5 -0.17 84 0 0 33 50 26 22 5 58.2 45 117 -33 33 33 26 34 7 28 33 25 38 34 15 16 -0.17 85 0 0 33 35 8 22 6 1.9 45 117 -32 33 18 5 33 52 12 33 10 17 34 0 1 -0.17 86 0 0 33 19 23 22 6 5.6 46 118 -31 33 2 18 33 36 29 32 54 28 33 44 20 -0.17 87 0 0 33 3 12 22 6 9.4 47 119 -30 32 46 4 33 20 20 32 38 14 33 28 12 -0.17 88 0 0 32 46 34 22 6 13.3 48 120 -29 32 29 24 33 3 45 32 21 32 33 11 38 -0.17 89 0 0 32 29 30 22 6 17.3 49 120 -29 32 12 17 32 46 43 32 4 24 32 54 37 -0.17 90 0 0 32 11 58 22 6 21.3 50 121 -28 31 54 44 32 29 14 31 46 50 32 37 9 -0.17 91 0 0 31 54 1 22 6 25.4 51 122 -27 31 36 44 32 11 19 31 28 48 32 19 15 -0.17 92 0 0 31 35 36 22 6 29.6 52 123 -26 31 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6 58 34 7 35 53 6 50 2 7 44 27 -0.18 145 0 0 6 44 22 22 11 37.6 68 272 29 6 25 44 7 3 2 6 17 12 7 11 35 -0.19 146 0 0 6 11 37 22 11 43.8 67 274 30 5 53 0 6 30 15 5 44 28 6 38 48 -0.19 147 0 0 5 38 58 22 11 50.0 65 275 31 5 20 22 5 57 35 5 11 51 6 6 7 -0.19 148 0 0 5 6 26 22 11 56.1 64 276 32 4 47 51 5 25 2 4 39 21 5 33 34 -0.19 149 0 0 4 34 3 22 12 2.2 63 277 33 4 15 29 4 52 37 4 6 59 5 1 9 -0.19 150 0 0 4 1 49 22 12 8.2 62 278 35 3 43 17 4 20 22 3 34 48 4 28 53 -0.19 151 0 0 3 29 45 22 12 14.2 61 278 36 3 11 15 3 48 17 3 2 46 3 56 47 -0.19 152 0 0 2 57 53 22 12 20.0 60 279 37 2 39 24 3 16 23 2 30 56 3 24 53 -0.19 153 0 0 2 26 13 22 12 25.9 59 280 38 2 7 46 2 44 42 1 59 19 2 53 10 -0.19 154 0 0 1 54 46 22 12 31.6 58 280 39 1 36 21 2 13 13 1 27 54 2 21 41 -0.19 155 0 0 1 23 33 22 12 37.2 57 281 40 1 5 10 1 41 58 0 56 44 1 50 25 -0.19 156 0 0 0 52 35 22 12 42.8 56 281 41 0 34 13 1 10 58 0 25 49 1 19 24 -0.19 157 0 0 0 21 53 22 12 48.3 55 282 43 0 3 33 0 40 14 - 0 4 51 0 48 39 -0.19 158 0 0 - 0 8 33 22 12 53.7 53 282 44 - 0 26 51 0 9 46 - 0 35 14 0 18 10 -0.19 159 0 0 - 0 38 42 22 12 59.0 52 282 45 - 0 56 57 - 0 20 25 - 1 5 19 - 0 12 2 -0.19 160 0 0 - 1 8 32 22 13 4.3 51 283 46 - 1 26 45 - 0 50 17 - 1 35 6 - 0 41 55 -0.19 161 0 0 - 1 38 4 22 13 9.4 50 283 47 - 1 56 15 - 1 19 51 - 2 4 35 - 1 11 30 -0.19 162 0 0 - 2 7 16 22 13 14.4 49 283 48 - 2 25 25 - 1 49 6 - 2 33 44 - 1 40 46 -0.19 163 0 0 - 2 36 8 22 13 19.4 48 284 49 - 2 54 15 - 2 18 0 - 3 2 32 - 2 9 41 -0.19 164 0 0 - 3 4 39 22 13 24.2 47 284 50 - 3 22 44 - 2 46 34 - 3 31 0 - 2 38 16 -0.19 165 0 0 - 3 32 49 22 13 29.0 46 284 52 - 3 50 51 - 3 14 46 - 3 59 6 - 3 6 29 -0.19 166 0 0 - 4 0 37 22 13 33.6 45 284 53 - 4 18 36 - 3 42 36 - 4 26 51 - 3 34 21 -0.19 167 0 0 - 4 28 2 22 13 38.1 44 284 54 - 4 45 59 - 4 10 4 - 4 54 12 - 4 1 49 -0.19 168 0 0 - 4 55 4 22 13 42.6 42 284 55 - 5 12 59 - 4 37 9 - 5 21 11 - 4 28 55 -0.19 169 0 0 - 5 21 43 22 13 46.9 41 284 56 - 5 39 35 - 5 3 50 - 5 47 46 - 4 55 37 -0.19 170 0 0 - 5 47 57 22 13 51.1 40 284 57 - 6 5 46 - 5 30 6 - 6 13 56 - 5 21 55 -0.19 171 0 0 - 6 13 47 22 13 55.2 39 284 58 - 6 31 34 - 5 55 59 - 6 39 42 - 5 47 49 -0.19 172 0 0 - 6 39 12 22 13 59.3 38 284 59 - 6 56 56 - 6 21 26 - 7 5 3 - 6 13 17 -0.19 173 0 0 - 7 4 11 22 14 3.1 37 284 60 - 7 21 53 - 6 46 28 - 7 29 59 - 6 38 21 -0.19 174 0 0 - 7 28 45 22 14 6.9 36 284 61 - 7 46 24 - 7 11 4 - 7 54 29 - 7 2 58 -0.19 175 0 0 - 7 52 52 22 14 10.6 35 284 62 - 8 10 29 - 7 35 15 - 8 18 33 - 7 27 9 -0.19 176 0 0 - 8 16 33 22 14 14.2 34 284 64 - 8 34 7 - 7 58 58 - 8 42 10 - 7 50 54 -0.19 177 0 0 - 8 39 48 22 14 17.6 33 284 65 - 8 57 19 - 8 22 15 - 9 5 21 - 8 14 12 -0.19 178 0 0 - 9 2 35 22 14 21.0 32 284 66 - 9 20 4 - 8 45 5 - 9 28 4 - 8 37 3 -0.19 179 0 0 - 9 24 55 22 14 24.2 31 284 67 - 9 42 21 - 9 7 27 - 9 50 21 - 8 59 27 -0.19 180 0 0 - 9 46 47 22 14 27.3 30 284 68 -10 4 11 - 9 29 22 -10 12 9 - 9 21 23 -0.19 -179 0 0 -10 8 12 22 14 30.3 29 284 69 -10 25 33 - 9 50 50 -10 33 30 - 9 42 51 -0.19 -178 0 0 -10 29 9 22 14 33.2 27 284 70 -10 46 28 -10 11 49 -10 54 24 -10 3 52 -0.19 -177 0 0 -10 49 37 22 14 36.0 26 284 71 -11 6 54 -10 32 20 -11 14 49 -10 24 24 -0.19 -176 0 0 -11 9 38 22 14 38.7 25 283 72 -11 26 52 -10 52 23 -11 34 45 -10 44 28 -0.19 -175 0 0 -11 29 10 22 14 41.3 24 283 73 -11 46 21 -11 11 57 -11 54 14 -11 4 3 -0.19 -174 0 0 -11 48 13 22 14 43.7 23 283 74 -12 5 22 -11 31 2 -12 13 13 -11 23 10 -0.19 -173 0 0 -12 6 47 22 14 46.1 22 283 75 -12 23 54 -11 49 39 -12 31 45 -11 41 48 -0.19 -172 0 0 -12 24 53 22 14 48.3 21 283 76 -12 41 58 -12 7 47 -12 49 47 -11 59 57 -0.19 -171 0 0 -12 42 30 22 14 50.4 20 283 77 -12 59 32 -12 25 26 -13 7 21 -12 17 37 -0.19 -170 0 0 -12 59 38 22 14 52.4 19 282 78 -13 16 38 -12 42 36 -13 24 25 -12 34 48 -0.20 -169 0 0 -13 16 16 22 14 54.4 18 282 79 -13 33 14 -12 59 17 -13 41 1 -12 51 30 -0.20 -168 0 0 -13 32 26 22 14 56.2 17 282 80 -13 49 22 -13 15 29 -13 57 7 -13 7 43 -0.20 -167 0 0 -13 48 7 22 14 57.9 16 282 81 -14 5 1 -13 31 12 -14 12 45 -13 23 26 -0.20 -166 0 0 -14 3 18 22 14 59.5 15 281 82 -14 20 10 -13 46 25 -14 27 53 -13 38 41 -0.20 -165 0 0 -14 18 0 22 15 0.9 14 281 83 -14 34 50 -14 1 9 -14 42 33 -13 53 26 -0.20 -164 0 0 -14 32 13 22 15 2.3 13 281 84 -14 49 1 -14 15 24 -14 56 43 -14 7 42 -0.20 -163 0 0 -14 45 57 22 15 3.6 12 281 85 -15 2 43 -14 29 10 -15 10 24 -14 21 28 -0.20 -162 0 0 -14 59 11 22 15 4.8 11 280 86 -15 15 56 -14 42 26 -15 23 36 -14 34 45 -0.20 -161 0 0 -15 11 57 22 15 5.9 10 280 86 -15 28 39 -14 55 13 -15 36 18 -14 47 33 -0.20 -160 0 0 -15 24 13 22 15 6.8 9 280 87 -15 40 53 -15 7 31 -15 48 32 -14 59 51 -0.20 -159 0 0 -15 35 59 22 15 7.7 8 280 88 -15 52 39 -15 19 19 -16 0 16 -15 11 41 -0.20 -158 0 0 -15 47 17 22 15 8.5 7 279 88 -16 3 55 -15 30 39 -16 11 32 -15 23 1 -0.21 -157 0 0 -15 58 6 22 15 9.1 6 279 87 -16 14 42 -15 41 29 -16 22 18 -15 33 51 -0.21 -156 0 0 -16 8 25 22 15 9.7 5 279 87 -16 25 0 -15 51 49 -16 32 35 -15 44 13 -0.21 -155 0 0 -16 18 15 22 15 10.2 4 279 86 -16 34 48 -16 1 41 -16 42 23 -15 54 5 -0.22 -154 0 0 -16 27 36 22 15 10.5 3 278 85 -16 44 8 -16 11 4 -16 51 43 -16 3 28 -0.23 -153 0 0 -16 36 28 22 15 10.8 2 278 84 -16 52 59 -16 19 57 -17 0 33 -16 12 22 -0.24 -152 0 0 -16 44 51 22 15 11.0 1 278 83 -17 1 21 -16 28 21 -17 8 54 -16 20 47 -0.29 -151 0 0 -16 52 46 22 15 11.1 0 277 83 -17 9 14 -16 36 16 -17 16 47 -16 28 43 -0.55 Uncertainty in time = +/- 2 secs Prediction of 2022 Aug 30.1 Data for the target star ------------------------ * name: TYC 0225-00996-1 * constellation : Cancer * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 52 59.1319 DE: +07 08 40.340 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 52 59.1321 DE: +07 08 40.340 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1023) Thomana asteroid class: approx. diameter [km]: 59 approx. diameter ["]: 0.027 distance from Earth [AU]: 3.08290 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#55 date of fit: 2022 Jun 06 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): 0.015", 0.004", 98.12° remarks: * orbital elements for (1023)Thomana : Mean anomaly = 74.2415629274 deg Arg. of pericenter = 195.6951730110 deg Long. of node = 193.9141906919 deg Inclination = 10.0626388353 deg Eccentricity = 0.0963669762 Semimajor axis = 3.1695824925 AU Perihelion dist = 2.8641394119 AU Mag: H = 10.02, G = 0.15 Epoch of elements : MJD 59881.92347222 TDT (2022 Oct 29.9235) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#552022Jun06,3.07,2022,10,29,22.162767,0.080659,0.156948,9.695814,-4.965719,-0.005684,0.001515,0.000000,0.000000 122.8884,7.0607,-156.51,-13.68,False TYC 0225-00996-1,8.88309222,7.1445389,0.00,11.75,0.00,0.0,0,,8.90311329,7.0607021,4.15,0.00,0,0,0 1023,Thomana,15.88,59.3,3.0829,0,0,1.859,-14.17,,3.0,0 0,74.0803,2022,10,29,195.6952,193.9142,10.0626,0.09637,3.16958,2.86414,10.02,5.0,0.15 1.229,0.0153,0.0037,98,0.0061,Known errors,-1.00,-1,-1,-1 20221029_0996-1,59821.08 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Aug 30, 01:59 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org