IOTA/IOTA-ES occultation update for (928) Hildrun / TYC 105-02218-1 event on 2024 Dec 16, 15:04 UT Visible from Summary ------- On 2024 Dec 16 UT, the 63.243 km diameter asteroid (928) Hildrun will occult a 11.2 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.24 mag to 14.34 mag (the magnitude of the asteroid) for at most 4.730 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: 2024 Dec 16, 14:56 - 2024 Dec 16, 15:12 * geocentric midpoint of event [JD]: 2460661.12803167 * magnitude of target star: 11.16 * magnitude drop [mag]: 3.24 * estimated maximum duration [s]: 4.730 * Moon: 98 % sunlit, 32° distance * Sun: 160° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 63 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.003", 78°) * approx speed of asteroid's shadow [km/s]: 13.3815 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 105-02218-1 by 928 Hildrun on 2024 Dec 16 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 37 0 0 13 40 13 15 12 18.5 0 87 -2 13 57 24 13 23 2 14 6 14 13 14 12 .... 38 0 0 13 43 40 15 12 18.3 1 87 -3 14 0 50 13 26 29 14 9 40 13 17 39 -0.01 39 0 0 13 46 51 15 12 18.1 2 87 -4 14 4 1 13 29 41 14 12 51 13 20 51 0.00 40 0 0 13 49 48 15 12 17.7 3 87 -5 14 6 58 13 32 38 14 15 48 13 23 48 0.00 41 0 0 13 52 29 15 12 17.2 4 87 -6 14 9 39 13 35 19 14 18 29 13 26 29 0.00 42 0 0 13 54 56 15 12 16.5 5 88 -6 14 12 5 13 37 46 14 20 55 13 28 56 0.00 43 0 0 13 57 7 15 12 15.7 6 88 -7 14 14 17 13 39 58 14 23 6 13 31 8 0.00 44 0 0 13 59 4 15 12 14.8 7 88 -8 14 16 13 13 41 55 14 25 3 13 33 5 0.00 45 0 0 14 0 46 15 12 13.7 8 88 -9 14 17 55 13 43 36 14 26 44 13 34 47 0.00 46 0 0 14 2 12 15 12 12.5 9 89 -10 14 19 21 13 45 3 14 28 11 13 36 14 0.00 47 0 0 14 3 24 15 12 11.2 10 89 -11 14 20 33 13 46 15 14 29 22 13 37 26 0.00 48 0 0 14 4 21 15 12 9.7 11 89 -12 14 21 30 13 47 12 14 30 19 13 38 23 0.00 49 0 0 14 5 3 15 12 8.1 12 89 -13 14 22 12 13 47 54 14 31 1 13 39 4 0.00 50 0 0 14 5 30 15 12 6.4 13 90 -14 14 22 39 13 48 21 14 31 28 13 39 31 0.00 51 0 0 14 5 42 15 12 4.5 14 90 -15 14 22 51 13 48 33 14 31 40 13 39 44 0.00 52 0 0 14 5 39 15 12 2.6 15 90 -15 14 22 48 13 48 30 14 31 37 13 39 41 0.00 53 0 0 14 5 21 15 12 0.4 16 90 -16 14 22 30 13 48 12 14 31 19 13 39 23 0.00 54 0 0 14 4 49 15 11 58.2 17 91 -17 14 21 58 13 47 40 14 30 47 13 38 51 0.00 55 0 0 14 4 2 15 11 55.8 18 91 -18 14 21 11 13 46 52 14 30 0 13 38 3 0.00 56 0 0 14 3 0 15 11 53.3 19 91 -19 14 20 9 13 45 50 14 28 58 13 37 1 0.00 57 0 0 14 1 43 15 11 50.7 20 91 -20 14 18 52 13 44 34 14 27 41 13 35 44 0.00 58 0 0 14 0 11 15 11 48.0 21 92 -21 14 17 21 13 43 2 14 26 10 13 34 13 0.00 59 0 0 13 58 25 15 11 45.1 22 92 -22 14 15 35 13 41 16 14 24 24 13 32 26 0.00 60 0 0 13 56 25 15 11 42.1 23 92 -23 14 13 34 13 39 15 14 22 24 13 30 25 0.00 61 0 0 13 54 9 15 11 39.0 23 92 -23 14 11 19 13 37 0 14 20 9 13 28 10 0.00 62 0 0 13 51 40 15 11 35.8 24 92 -24 14 8 50 13 34 30 14 17 39 13 25 40 0.00 63 0 0 13 48 56 15 11 32.4 25 93 -25 14 6 6 13 31 45 14 14 56 13 22 56 0.00 64 0 0 13 45 57 15 11 28.9 26 93 -26 14 3 7 13 28 47 14 11 57 13 19 57 0.00 65 0 0 13 42 44 15 11 25.3 27 93 -27 13 59 55 13 25 33 14 8 45 13 16 43 0.00 66 0 0 13 39 17 15 11 21.6 28 93 -28 13 56 28 13 22 6 14 5 18 13 13 16 0.00 67 0 0 13 35 35 15 11 17.8 29 94 -29 13 52 47 13 18 24 14 1 37 13 9 34 0.00 68 0 0 13 31 40 15 11 13.8 30 94 -30 13 48 51 13 14 28 13 57 42 13 5 38 0.00 69 0 0 13 27 30 15 11 9.7 31 94 -31 13 44 42 13 10 18 13 53 32 13 1 28 0.00 70 0 0 13 23 6 15 11 5.6 32 94 -31 13 40 18 13 5 54 13 49 9 12 57 4 0.00 71 0 0 13 18 29 15 11 1.3 33 95 -32 13 35 41 13 1 16 13 44 32 12 52 25 0.00 72 0 0 13 13 37 15 10 56.9 34 95 -33 13 30 50 12 56 25 13 39 41 12 47 33 0.00 73 0 0 13 8 32 15 10 52.3 35 95 -34 13 25 45 12 51 19 13 34 36 12 42 28 0.00 74 0 0 13 3 13 15 10 47.7 36 95 -35 13 20 26 12 45 59 13 29 18 12 37 8 0.00 75 0 0 12 57 40 15 10 43.0 37 95 -36 13 14 54 12 40 26 13 23 46 12 31 35 0.00 76 0 0 12 51 54 15 10 38.1 38 96 -37 13 9 8 12 34 40 13 18 0 12 25 48 0.00 77 0 0 12 45 54 15 10 33.2 39 96 -38 13 3 9 12 28 40 13 12 1 12 19 47 0.00 78 0 0 12 39 41 15 10 28.1 40 96 -38 12 56 56 12 22 26 13 5 48 12 13 34 0.00 79 0 0 12 33 15 15 10 22.9 41 96 -39 12 50 30 12 15 59 12 59 23 12 7 7 0.00 80 0 0 12 26 35 15 10 17.7 42 96 -40 12 43 51 12 9 19 12 52 44 12 0 27 0.00 81 0 0 12 19 43 15 10 12.3 43 97 -41 12 36 59 12 2 26 12 45 52 11 53 33 0.00 82 0 0 12 12 37 15 10 6.8 44 97 -42 12 29 54 11 55 20 12 38 47 11 46 27 0.00 83 0 0 12 5 19 15 10 1.2 45 97 -43 12 22 36 11 48 1 12 31 29 11 39 8 0.00 84 0 0 11 57 47 15 9 55.6 46 97 -44 12 15 5 11 40 30 12 23 59 11 31 36 0.00 85 0 0 11 50 3 15 9 49.8 47 97 -44 12 7 22 11 32 45 12 16 15 11 23 51 0.00 86 0 0 11 42 7 15 9 43.9 47 98 -45 11 59 26 11 24 48 12 8 20 11 15 54 0.00 87 0 0 11 33 58 15 9 38.0 48 98 -46 11 51 17 11 16 39 12 0 12 11 7 45 0.00 88 0 0 11 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54 9 2 1 9 45 52 8 53 3 0.00 102 0 0 9 8 29 15 7 58.3 63 100 -58 9 25 56 8 51 2 9 34 54 8 42 4 0.00 103 0 0 8 57 21 15 7 51.0 64 100 -59 9 14 48 8 39 53 9 23 47 8 30 55 0.00 104 0 0 8 46 3 15 7 43.7 65 101 -59 9 3 30 8 28 35 9 12 29 8 19 36 0.00 105 0 0 8 34 35 15 7 36.3 66 101 -60 8 52 3 8 17 7 9 1 2 8 8 7 0.00 106 0 0 8 22 58 15 7 28.8 67 101 -61 8 40 26 8 5 29 8 49 26 7 56 29 0.00 107 0 0 8 11 11 15 7 21.3 68 101 -61 8 28 40 7 53 42 8 37 40 7 44 42 0.00 108 0 0 7 59 15 15 7 13.8 69 101 -62 8 16 45 7 41 45 8 25 45 7 32 45 0.00 109 0 0 7 47 11 15 7 6.1 70 101 -63 8 4 41 7 29 40 8 13 41 7 20 40 0.00 110 0 0 7 34 57 15 6 58.4 71 101 -63 7 52 28 7 17 26 8 1 29 7 8 26 0.00 111 0 0 7 22 35 15 6 50.7 72 101 -64 7 40 7 7 5 4 7 49 7 6 56 3 0.00 112 0 0 7 10 5 15 6 42.9 73 101 -65 7 27 37 6 52 33 7 36 38 6 43 32 0.00 113 0 0 6 57 27 15 6 35.1 74 101 -65 7 14 59 6 39 55 7 24 0 6 30 54 0.00 114 0 0 6 44 41 15 6 27.2 75 102 -66 7 2 14 6 27 8 7 11 15 6 18 7 0.00 115 0 0 6 31 47 15 6 19.3 76 102 -66 6 49 20 6 14 14 6 58 22 6 5 12 0.00 116 0 0 6 18 46 15 6 11.4 77 102 -67 6 36 19 6 1 12 6 45 21 5 52 10 0.00 117 0 0 6 5 37 15 6 3.4 78 102 -67 6 23 11 5 48 3 6 32 13 5 39 1 0.00 118 0 0 5 52 22 15 5 55.3 79 102 -68 6 9 56 5 34 47 6 18 58 5 25 45 0.00 119 0 0 5 39 0 15 5 47.3 80 102 -68 5 56 34 5 21 25 6 5 37 5 12 22 0.00 120 0 0 5 25 31 15 5 39.2 81 102 -68 5 43 6 5 7 56 5 52 9 4 58 53 0.00 121 0 0 5 11 56 15 5 31.1 82 101 -69 5 29 31 4 54 20 5 38 34 4 45 17 0.00 122 0 0 4 58 14 15 5 22.9 83 101 -69 5 15 50 4 40 39 5 24 53 4 31 35 0.00 123 0 0 4 44 27 15 5 14.8 84 101 -69 5 2 4 4 26 51 5 11 7 4 17 48 0.00 124 0 0 4 30 35 15 5 6.6 85 101 -69 4 48 11 4 12 58 4 57 15 4 3 55 0.00 125 0 0 4 16 37 15 4 58.4 86 100 -69 4 34 14 3 59 0 4 43 17 3 49 56 0.00 126 0 0 4 2 34 15 4 50.1 87 99 -70 4 20 11 3 44 57 4 29 15 3 35 53 0.00 127 0 0 3 48 26 15 4 41.9 88 98 -70 4 6 4 3 30 48 4 15 7 3 21 44 0.00 128 0 0 3 34 13 15 4 33.6 89 93 -70 3 51 51 3 16 36 4 0 55 3 7 32 0.00 129 0 0 3 19 57 15 4 25.4 90 72 -70 3 37 35 3 2 19 3 46 39 2 53 14 0.00 130 0 0 3 5 36 15 4 17.1 89 308 -70 3 23 14 2 47 57 3 32 18 2 38 53 0.00 131 0 0 2 51 11 15 4 8.9 88 293 -69 3 8 50 2 33 32 3 17 54 2 24 28 0.00 132 0 0 2 36 43 15 4 0.6 87 290 -69 2 54 22 2 19 4 3 3 26 2 9 59 0.00 133 0 0 2 22 11 15 3 52.4 86 288 -69 2 39 50 2 4 32 2 48 55 1 55 27 0.00 134 0 0 2 7 37 15 3 44.1 85 287 -69 2 25 16 1 49 57 2 34 21 1 40 53 0.01 135 0 0 1 52 59 15 3 35.9 84 287 -68 2 10 39 1 35 20 2 19 43 1 26 15 0.01 136 0 0 1 38 19 15 3 27.6 83 286 -68 1 55 59 1 20 40 2 5 4 1 11 35 0.01 137 0 0 1 23 37 15 3 19.4 82 286 -68 1 41 17 1 5 58 1 50 22 0 56 53 0.01 138 0 0 1 8 53 15 3 11.2 81 286 -67 1 26 33 0 51 13 1 35 38 0 42 8 0.01 139 0 0 0 54 7 15 3 3.0 80 286 -67 1 11 47 0 36 28 1 20 52 0 27 22 0.01 140 0 0 0 39 20 15 2 54.9 79 286 -66 0 57 0 0 21 40 1 6 5 0 12 35 0.01 141 0 0 0 24 32 15 2 46.7 78 286 -66 0 42 12 0 6 52 0 51 17 - 0 2 13 0.01 142 0 0 0 9 43 15 2 38.6 77 285 -65 0 27 23 - 0 7 57 0 36 28 - 0 17 2 0.01 143 0 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282 -36 - 8 9 53 - 8 44 54 - 8 0 53 - 8 53 54 0.01 180 0 0 - 8 39 27 14 58 15.2 40 282 -35 - 8 21 58 - 8 56 57 - 8 12 58 - 9 5 57 0.01 -179 0 0 - 8 51 23 14 58 10.0 39 282 -34 - 8 33 53 - 9 8 52 - 8 24 53 - 9 17 52 0.01 -178 0 0 - 9 3 8 14 58 4.9 38 282 -33 - 8 45 39 - 9 20 37 - 8 36 40 - 9 29 37 0.01 -177 0 0 - 9 14 45 14 58 0.0 37 281 -32 - 8 57 16 - 9 32 13 - 8 48 17 - 9 41 12 0.01 -176 0 0 - 9 26 11 14 57 55.1 36 281 -32 - 9 8 43 - 9 43 39 - 8 59 45 - 9 52 38 0.01 -175 0 0 - 9 37 28 14 57 50.4 35 281 -31 - 9 20 1 - 9 54 55 - 9 11 2 -10 3 54 0.01 -174 0 0 - 9 48 35 14 57 45.8 34 281 -30 - 9 31 8 -10 6 2 - 9 22 10 -10 15 0 0.01 -173 0 0 - 9 59 31 14 57 41.3 33 281 -29 - 9 42 5 -10 16 57 - 9 33 7 -10 25 56 0.01 -172 0 0 -10 10 17 14 57 36.9 32 281 -28 - 9 52 51 -10 27 43 - 9 43 53 -10 36 41 0.01 -171 0 0 -10 20 52 14 57 32.7 31 280 -27 -10 3 27 -10 38 18 - 9 54 30 -10 47 15 0.01 -170 0 0 -10 31 17 14 57 28.6 30 280 -26 -10 13 52 -10 48 41 -10 4 55 -10 57 39 0.01 -169 0 0 -10 41 30 14 57 24.6 29 280 -25 -10 24 6 -10 58 54 -10 15 9 -11 7 52 0.01 -168 0 0 -10 51 33 14 57 20.7 28 280 -24 -10 34 9 -11 8 56 -10 25 12 -11 17 53 0.01 -167 0 0 -11 1 24 14 57 16.9 27 280 -23 -10 44 1 -11 18 47 -10 35 4 -11 27 43 0.01 -166 0 0 -11 11 3 14 57 13.3 26 279 -23 -10 53 41 -11 28 26 -10 44 45 -11 37 22 0.01 -165 0 0 -11 20 31 14 57 9.8 25 279 -22 -11 3 9 -11 37 53 -10 54 13 -11 46 49 0.01 -164 0 0 -11 29 47 14 57 6.4 24 279 -21 -11 12 26 -11 47 9 -11 3 30 -11 56 4 0.01 -163 0 0 -11 38 51 14 57 3.2 23 279 -20 -11 21 30 -11 56 12 -11 12 35 -12 5 8 0.01 -162 0 0 -11 47 43 14 57 0.1 22 279 -19 -11 30 23 -12 5 4 -11 21 28 -12 13 59 0.01 -161 0 0 -11 56 23 14 56 57.1 21 278 -18 -11 39 3 -12 13 43 -11 30 8 -12 22 38 0.01 -160 0 0 -12 4 51 14 56 54.3 20 278 -17 -11 47 31 -12 22 10 -11 38 37 -12 31 5 0.01 -159 0 0 -12 13 5 14 56 51.5 19 278 -16 -11 55 47 -12 30 24 -11 46 52 -12 39 19 0.01 -158 0 0 -12 21 8 14 56 49.0 18 278 -15 -12 3 49 -12 38 26 -11 54 55 -12 47 20 0.01 -157 0 0 -12 28 57 14 56 46.5 17 278 -14 -12 11 39 -12 46 15 -12 2 45 -12 55 9 0.01 -156 0 0 -12 36 33 14 56 44.2 16 277 -13 -12 19 16 -12 53 51 -12 10 23 -13 2 44 0.01 -155 0 0 -12 43 57 14 56 42.0 15 277 -13 -12 26 40 -13 1 14 -12 17 47 -13 10 7 0.01 -154 0 0 -12 51 7 14 56 39.9 14 277 -12 -12 33 51 -13 8 24 -12 24 58 -13 17 17 0.01 -153 0 0 -12 58 4 14 56 38.0 13 277 -11 -12 40 48 -13 15 20 -12 31 55 -13 24 13 0.01 -152 0 0 -13 4 48 14 56 36.2 12 277 -10 -12 47 32 -13 22 3 -12 38 40 -13 30 56 0.01 -151 0 0 -13 11 18 14 56 34.6 11 276 -9 -12 54 3 -13 28 33 -12 45 10 -13 37 25 0.01 -150 0 0 -13 17 34 14 56 33.1 10 276 -8 -13 0 20 -13 34 49 -12 51 27 -13 43 41 0.00 -149 0 0 -13 23 37 14 56 31.7 9 276 -7 -13 6 23 -13 40 51 -12 57 31 -13 49 43 0.00 -148 0 0 -13 29 26 14 56 30.4 8 276 -6 -13 12 12 -13 46 40 -13 3 20 -13 55 32 0.00 -147 0 0 -13 35 1 14 56 29.3 7 275 -5 -13 17 47 -13 52 14 -13 8 56 -14 1 6 0.00 -146 0 0 -13 40 22 14 56 28.4 6 275 -4 -13 23 9 -13 57 35 -13 14 18 -14 6 26 0.00 -145 0 0 -13 45 29 14 56 27.5 5 275 -3 -13 28 16 -14 2 42 -13 19 25 -14 11 33 0.00 -144 0 0 -13 50 21 14 56 26.8 4 275 -2 -13 33 9 -14 7 34 -13 24 18 -14 16 25 0.00 -143 0 0 -13 55 0 14 56 26.3 4 274 -2 -13 37 48 -14 12 12 -13 28 57 -14 21 3 0.00 -142 0 0 -13 59 24 14 56 25.9 3 274 -1 -13 42 12 -14 16 36 -13 33 22 -14 25 26 0.00 -141 0 0 -14 3 34 14 56 25.6 2 274 0 -13 46 22 -14 20 45 -13 37 32 -14 29 35 -0.01 -140 0 0 -14 7 29 14 56 25.4 1 274 1 -13 50 18 -14 24 40 -13 41 27 -14 33 30 -0.03 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 105-02218-1 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 23 56.9095 DE: +03 26 11.273 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 23 56.9094 DE: +03 26 11.272 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (928) Hildrun asteroid class: approx. diameter [km]: 63 approx. diameter ["]: 0.044 distance from Earth [AU]: 1.99110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 date of fit: 2023 Apr 27 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): 0.025", 0.003", 77.512° remarks: * orbital elements for (928)Hildrun : Mean anomaly = 304.6951796818 deg Arg. of pericenter = 21.2851817312 deg Long. of node = 129.6063896668 deg Inclination = 17.6376687076 deg Eccentricity = 0.1446704208 Semimajor axis = 3.1433247150 AU Perihelion dist = 2.6885786057 AU Mag: H = 10.01, G = 0.15 Epoch of elements : MJD 60660.62803255 TDT (2024 Dec 16.6280) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr27,4.73,2024,12,16,15.072760,-0.001091,-0.004355,-7.333546,1.807004,0.000315,0.002023,0.000001,0.000000 129.4813,3.4603,-47.11,-23.35,False TYC 105-02218-1,5.39914151,3.4364649,11.46,11.16,11.00,0.0,0,,5.42138145,3.4603456,3.24,2.97,0,0,0 928,Hildrun,14.34,63.243,1.9911,0,0,-2.162,7.99,,3.2,0 0,304.5841,2024,12,16,21.2852,129.6064,17.6377,0.14467,3.14332,2.68858,10.01,5.0,0.15 1.257,0.0247,0.0030,78,0.0113,Known errors,1.07,0,-1,-1 20241216_2218-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org