IOTA/IOTA-ES occultation update for (21967) 1999 WS9 / TYC 6388-01316-1 event on 2024 Dec 27, 23:13 UT Visible from Summary ------- On 2024 Dec 27 UT, the 19.771 km diameter asteroid (21967) 1999 WS9 will occult a 10.7 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.13 mag to 17.79 mag (the magnitude of the asteroid) for at most 0.560 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 27, 23:10 - 2024 Dec 27, 23:16 * geocentric midpoint of event [JD]: 2460672.46774454 * magnitude of target star: 10.66 * magnitude drop [mag]: 7.13 * estimated maximum duration [s]: 0.560 * Moon: 9 % sunlit, 90° distance * Sun: 56° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.001", 71°) * approx speed of asteroid's shadow [km/s]: 35.5979 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6388-01316-1 by 21967 1999 WS9 on 2024 Dec 27 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 137 0 0 -52 51 40 23 10 59.1 0 122 39 -52 59 0 -52 44 21 -53 1 59 -52 41 23 .... 138 0 0 -53 14 10 23 10 59.1 1 121 39 -53 21 28 -53 6 52 -53 24 26 -53 3 54 0.56 139 0 0 -53 36 7 23 10 59.2 2 120 40 -53 43 24 -53 28 52 -53 46 21 -53 25 55 0.57 140 0 0 -53 57 34 23 10 59.3 2 119 40 -54 4 48 -53 50 20 -54 7 45 -53 47 24 0.58 141 0 0 -54 18 30 23 10 59.4 3 119 41 -54 25 42 -54 11 18 -54 28 38 -54 8 22 0.58 142 0 0 -54 38 55 23 10 59.6 4 118 41 -54 46 6 -54 31 45 -54 49 1 -54 28 50 0.59 143 0 0 -54 58 50 23 10 59.8 4 117 42 -55 5 59 -54 51 41 -55 8 53 -54 48 47 0.59 144 0 0 -55 18 14 23 11 0.0 5 116 42 -55 25 22 -55 11 8 -55 28 15 -55 8 15 0.59 145 0 0 -55 37 10 23 11 0.2 6 115 42 -55 44 15 -55 30 5 -55 47 8 -55 27 13 0.59 146 0 0 -55 55 35 23 11 0.4 6 114 43 -56 2 39 -55 48 33 -56 5 31 -55 45 41 0.59 147 0 0 -56 13 32 23 11 0.7 7 114 43 -56 20 34 -56 6 31 -56 23 25 -56 3 40 0.59 148 0 0 -56 31 0 23 11 1.0 8 113 44 -56 38 0 -56 24 1 -56 40 51 -56 21 11 0.59 149 0 0 -56 48 0 23 11 1.3 8 112 44 -56 54 58 -56 41 3 -56 57 48 -56 38 13 0.59 150 0 0 -57 4 32 23 11 1.6 9 111 44 -57 11 28 -56 57 36 -57 14 17 -56 54 48 0.59 151 0 0 -57 20 36 23 11 2.0 9 110 45 -57 27 31 -57 13 42 -57 30 19 -57 10 54 0.59 152 0 0 -57 36 13 23 11 2.4 10 109 45 -57 43 6 -57 29 21 -57 45 54 -57 26 34 0.59 153 0 0 -57 51 23 23 11 2.8 11 109 45 -57 58 14 -57 44 33 -58 1 1 -57 41 46 0.59 154 0 0 -58 6 7 23 11 3.2 11 108 46 -58 12 56 -57 59 18 -58 15 43 -57 56 32 0.59 155 0 0 -58 20 24 23 11 3.6 12 107 46 -58 27 12 -58 13 37 -58 29 58 -58 10 52 0.59 156 0 0 -58 34 16 23 11 4.0 12 106 46 -58 41 2 -58 27 30 -58 43 47 -58 24 46 0.59 157 0 0 -58 47 42 23 11 4.5 13 105 46 -58 54 26 -58 40 58 -58 57 11 -58 38 14 0.59 158 0 0 -59 0 43 23 11 5.0 13 104 47 -59 7 26 -58 54 0 -59 10 9 -58 51 17 0.59 159 0 0 -59 13 19 23 11 5.4 14 103 47 -59 20 0 -59 6 38 -59 22 43 -59 3 56 0.59 160 0 0 -59 25 31 23 11 5.9 15 102 47 -59 32 10 -59 18 51 -59 34 53 -59 16 9 0.59 161 0 0 -59 37 18 23 11 6.5 15 102 47 -59 43 56 -59 30 40 -59 46 38 -59 27 59 0.59 162 0 0 -59 48 42 23 11 7.0 16 101 48 -59 55 19 -59 42 6 -59 58 0 -59 39 25 0.59 163 0 0 -59 59 42 23 11 7.5 16 100 48 -60 6 18 -59 53 7 -60 8 58 -59 50 27 0.59 164 0 0 -60 10 19 23 11 8.1 17 99 48 -60 16 53 -60 3 46 -60 19 34 -60 1 6 0.59 165 0 0 -60 20 34 23 11 8.6 17 98 48 -60 27 6 -60 14 1 -60 29 46 -60 11 22 0.59 166 0 0 -60 30 25 23 11 9.2 18 97 48 -60 36 57 -60 23 54 -60 39 36 -60 21 16 0.59 167 0 0 -60 39 55 23 11 9.8 18 96 49 -60 46 25 -60 33 25 -60 49 4 -60 30 47 0.59 168 0 0 -60 49 2 23 11 10.4 19 95 49 -60 55 31 -60 42 34 -60 58 9 -60 39 56 0.59 169 0 0 -60 57 48 23 11 11.0 19 94 49 -61 4 16 -60 51 21 -61 6 54 -60 48 44 0.59 170 0 0 -61 6 13 23 11 11.6 20 93 49 -61 12 39 -60 59 46 -61 15 16 -60 57 10 0.59 171 0 0 -61 14 16 23 11 12.2 20 93 49 -61 20 41 -61 7 51 -61 23 18 -61 5 15 0.59 172 0 0 -61 21 58 23 11 12.9 21 92 49 -61 28 23 -61 15 34 -61 30 59 -61 12 58 0.59 173 0 0 -61 29 20 23 11 13.5 21 91 49 -61 35 43 -61 22 57 -61 38 19 -61 20 21 0.59 174 0 0 -61 36 21 23 11 14.2 22 90 50 -61 42 43 -61 29 59 -61 45 19 -61 27 24 0.59 175 0 0 -61 43 2 23 11 14.8 22 89 50 -61 49 23 -61 36 41 -61 51 58 -61 34 6 0.59 176 0 0 -61 49 22 23 11 15.5 23 88 50 -61 55 43 -61 43 2 -61 58 18 -61 40 28 0.59 177 0 0 -61 55 23 23 11 16.2 23 87 50 -62 1 43 -61 49 4 -62 4 17 -61 46 30 0.59 178 0 0 -62 1 5 23 11 16.9 24 86 50 -62 7 24 -61 54 46 -62 9 57 -61 52 13 0.59 179 0 0 -62 6 26 23 11 17.6 24 85 50 -62 12 45 -62 0 9 -62 15 18 -61 57 36 0.59 -180 0 0 -62 11 29 23 11 18.3 24 84 50 -62 17 46 -62 5 12 -62 20 20 -62 2 39 0.59 -179 0 0 -62 16 12 23 11 19.1 25 83 50 -62 22 29 -62 9 56 -62 25 2 -62 7 24 0.59 -178 0 0 -62 20 37 23 11 19.8 25 82 50 -62 26 53 -62 14 21 -62 29 26 -62 11 49 0.59 -177 0 0 -62 24 42 23 11 20.5 26 81 50 -62 30 58 -62 18 27 -62 33 30 -62 15 55 0.59 -176 0 0 -62 28 29 23 11 21.3 26 80 50 -62 34 44 -62 22 15 -62 37 16 -62 19 43 0.59 -175 0 0 -62 31 58 23 11 22.0 27 79 50 -62 38 12 -62 25 44 -62 40 44 -62 23 12 0.59 -174 0 0 -62 35 7 23 11 22.8 27 78 50 -62 41 21 -62 28 54 -62 43 53 -62 26 22 0.59 -173 0 0 -62 37 59 23 11 23.6 28 78 50 -62 44 12 -62 31 46 -62 46 44 -62 29 14 0.59 -172 0 0 -62 40 32 23 11 24.4 28 77 50 -62 46 45 -62 34 19 -62 49 17 -62 31 48 0.59 -171 0 0 -62 42 47 23 11 25.2 29 76 50 -62 49 0 -62 36 35 -62 51 31 -62 34 4 0.59 -170 0 0 -62 44 44 23 11 26.0 29 75 50 -62 50 56 -62 38 32 -62 53 28 -62 36 1 0.59 -169 0 0 -62 46 23 23 11 26.8 29 74 50 -62 52 35 -62 40 11 -62 55 6 -62 37 40 0.59 -168 0 0 -62 47 43 23 11 27.6 30 73 50 -62 53 55 -62 41 32 -62 56 26 -62 39 1 0.59 -167 0 0 -62 48 46 23 11 28.5 30 72 50 -62 54 58 -62 42 35 -62 57 29 -62 40 4 0.59 -166 0 0 -62 49 31 23 11 29.3 31 71 50 -62 55 43 -62 43 20 -62 58 14 -62 40 49 0.59 -165 0 0 -62 49 58 23 11 30.2 31 70 50 -62 56 10 -62 43 47 -62 58 40 -62 41 16 0.59 -164 0 0 -62 50 7 23 11 31.1 32 69 50 -62 56 19 -62 43 56 -62 58 49 -62 41 25 0.59 -163 0 0 -62 49 58 23 11 31.9 32 68 50 -62 56 10 -62 43 47 -62 58 41 -62 41 16 0.59 -162 0 0 -62 49 31 23 11 32.8 32 67 50 -62 55 43 -62 43 20 -62 58 14 -62 40 49 0.59 -161 0 0 -62 48 47 23 11 33.7 33 66 50 -62 54 58 -62 42 35 -62 57 29 -62 40 5 0.59 -160 0 0 -62 47 44 23 11 34.6 33 65 50 -62 53 56 -62 41 32 -62 56 27 -62 39 2 0.59 -159 0 0 -62 46 23 23 11 35.6 34 64 50 -62 52 35 -62 40 12 -62 55 7 -62 37 41 0.59 -158 0 0 -62 44 45 23 11 36.5 34 63 50 -62 50 57 -62 38 33 -62 53 28 -62 36 2 0.59 -157 0 0 -62 42 48 23 11 37.5 35 62 50 -62 49 1 -62 36 36 -62 51 32 -62 34 5 0.59 -156 0 0 -62 40 33 23 11 38.4 35 61 50 -62 46 46 -62 34 21 -62 49 17 -62 31 49 0.59 -155 0 0 -62 38 0 23 11 39.4 35 60 50 -62 44 13 -62 31 47 -62 46 45 -62 29 16 0.59 -154 0 0 -62 35 8 23 11 40.4 36 59 50 -62 41 22 -62 28 55 -62 43 54 -62 26 24 0.59 -153 0 0 -62 31 58 23 11 41.4 36 58 49 -62 38 13 -62 25 45 -62 40 45 -62 23 13 0.59 -152 0 0 -62 28 30 23 11 42.4 37 57 49 -62 34 45 -62 22 16 -62 37 17 -62 19 44 0.59 -151 0 0 -62 24 43 23 11 43.4 37 55 49 -62 30 58 -62 18 28 -62 33 31 -62 15 56 0.59 -150 0 0 -62 20 37 23 11 44.5 37 54 49 -62 26 53 -62 14 22 -62 29 26 -62 11 49 0.59 -149 0 0 -62 16 12 23 11 45.5 38 53 49 -62 22 29 -62 9 56 -62 25 2 -62 7 24 0.59 -148 0 0 -62 11 29 23 11 46.6 38 52 49 -62 17 46 -62 5 12 -62 20 19 -62 2 39 0.59 -147 0 0 -62 6 25 23 11 47.7 39 51 49 -62 12 43 -62 0 8 -62 15 17 -61 57 35 0.59 -146 0 0 -62 1 3 23 11 48.8 39 50 49 -62 7 22 -61 54 45 -62 9 55 -61 52 11 0.59 -145 0 0 -61 55 21 23 11 49.9 40 49 48 -62 1 40 -61 49 2 -62 4 14 -61 46 28 0.59 -144 0 0 -61 49 19 23 11 51.0 40 48 48 -61 55 39 -61 42 59 -61 58 14 -61 40 25 0.59 -143 0 0 -61 42 58 23 11 52.1 40 47 48 -61 49 19 -61 36 37 -61 51 53 -61 34 2 0.59 -142 0 0 -61 36 16 23 11 53.3 41 46 48 -61 42 38 -61 29 54 -61 45 13 -61 27 19 0.59 -141 0 0 -61 29 13 23 11 54.5 41 45 48 -61 35 36 -61 22 51 -61 38 12 -61 20 16 0.59 -140 0 0 -61 21 51 23 11 55.7 42 44 47 -61 28 15 -61 15 27 -61 30 51 -61 12 51 0.59 -139 0 0 -61 14 7 23 11 56.9 42 42 47 -61 20 32 -61 7 42 -61 23 8 -61 5 6 0.59 -138 0 0 -61 6 2 23 11 58.1 43 41 47 -61 12 28 -60 59 36 -61 15 5 -60 57 0 0.59 -137 0 0 -60 57 36 23 11 59.4 43 40 47 -61 4 3 -60 51 9 -61 6 40 -60 48 32 0.59 -136 0 0 -60 48 48 23 12 0.7 43 39 47 -60 55 16 -60 42 20 -60 57 54 -60 39 43 0.59 -135 0 0 -60 39 38 23 12 2.0 44 38 46 -60 46 8 -60 33 9 -60 48 46 -60 30 31 0.59 -134 0 0 -60 30 6 23 12 3.3 44 37 46 -60 36 37 -60 23 36 -60 39 16 -60 20 57 0.59 -133 0 0 -60 20 12 23 12 4.6 45 36 46 -60 26 44 -60 13 40 -60 29 24 -60 11 1 0.59 -132 0 0 -60 9 55 23 12 6.0 45 34 46 -60 16 28 -60 3 22 -60 19 8 -60 0 42 0.59 -131 0 0 -59 59 14 23 12 7.4 46 33 45 -60 5 49 -59 52 40 -60 8 30 -59 50 0 0.59 -130 0 0 -59 48 11 23 12 8.8 46 32 45 -59 54 47 -59 41 35 -59 57 28 -59 38 54 0.59 -129 0 0 -59 36 43 23 12 10.2 46 31 45 -59 43 21 -59 30 6 -59 46 3 -59 27 25 0.59 -128 0 0 -59 24 52 23 12 11.6 47 30 44 -59 31 31 -59 18 13 -59 34 13 -59 15 31 0.59 -127 0 0 -59 12 36 23 12 13.1 47 28 44 -59 19 17 -59 5 55 -59 21 59 -59 3 13 0.59 -126 0 0 -58 59 55 23 12 14.6 48 27 44 -59 6 37 -58 53 13 -59 9 21 -58 50 30 0.59 -125 0 0 -58 46 49 23 12 16.1 48 26 43 -58 53 33 -58 40 5 -58 56 17 -58 37 22 0.59 -124 0 0 -58 33 17 23 12 17.7 48 24 43 -58 40 3 -58 26 32 -58 42 48 -58 23 48 0.59 -123 0 0 -58 19 20 23 12 19.3 49 23 43 -58 26 7 -58 12 33 -58 28 53 -58 9 48 0.59 -122 0 0 -58 4 56 23 12 20.9 49 22 42 -58 11 45 -57 58 8 -58 14 32 -57 55 22 0.59 -121 0 0 -57 50 6 23 12 22.5 50 20 42 -57 56 57 -57 43 16 -57 59 44 -57 40 30 0.59 -120 0 0 -57 34 49 23 12 24.2 50 19 42 -57 41 41 -57 27 57 -57 44 29 -57 25 10 0.59 -119 0 0 -57 19 4 23 12 25.8 51 18 41 -57 25 58 -57 12 11 -57 28 47 -57 9 23 0.59 -118 0 0 -57 2 52 23 12 27.6 51 16 41 -57 9 48 -56 55 56 -57 12 37 -56 53 8 0.59 -117 0 0 -56 46 11 23 12 29.3 51 15 40 -56 53 9 -56 39 14 -56 55 59 -56 36 25 0.59 -116 0 0 -56 29 2 23 12 31.1 52 13 40 -56 36 2 -56 22 3 -56 38 52 -56 19 13 0.59 -115 0 0 -56 11 24 23 12 32.9 52 12 40 -56 18 25 -56 4 23 -56 21 16 -56 1 32 0.59 -114 0 0 -55 53 16 23 12 34.8 53 11 39 -56 0 20 -55 46 14 -56 3 12 -55 43 22 0.59 -113 0 0 -55 34 39 23 12 36.6 53 9 39 -55 41 44 -55 27 34 -55 44 37 -55 24 42 0.59 -112 0 0 -55 15 32 23 12 38.5 53 7 38 -55 22 39 -55 8 25 -55 25 32 -55 5 32 0.59 -111 0 0 -54 55 54 23 12 40.5 54 6 38 -55 3 3 -54 48 46 -55 5 57 -54 45 52 0.59 -110 0 0 -54 35 46 23 12 42.5 54 4 37 -54 42 56 -54 28 35 -54 45 52 -54 25 41 0.59 -109 0 0 -54 15 6 23 12 44.5 55 3 37 -54 22 19 -54 7 54 -54 25 15 -54 4 59 0.59 -108 0 0 -53 53 55 23 12 46.5 55 1 36 -54 1 10 -53 46 41 -54 4 6 -53 43 45 0.59 -107 0 0 -53 32 12 23 12 48.6 55 359 36 -53 39 29 -53 24 56 -53 42 26 -53 21 59 0.59 -106 0 0 -53 9 57 23 12 50.8 56 358 35 -53 17 16 -53 2 39 -53 20 14 -52 59 42 0.59 -105 0 0 -52 47 10 23 12 52.9 56 356 35 -52 54 30 -52 39 50 -52 57 29 -52 36 52 0.59 -104 0 0 -52 23 50 23 12 55.1 56 354 34 -52 31 12 -52 16 28 -52 34 12 -52 13 29 0.59 -103 0 0 -51 59 57 23 12 57.3 57 352 33 -52 7 21 -51 52 34 -52 10 22 -51 49 34 0.59 -102 0 0 -51 35 31 23 12 59.6 57 350 33 -51 42 57 -51 28 6 -51 45 58 -51 25 5 0.59 -101 0 0 -51 10 32 23 13 1.9 57 349 32 -51 18 0 -51 3 5 -51 21 2 -51 0 3 0.59 -100 0 0 -50 44 59 23 13 4.3 58 347 32 -50 52 29 -50 37 30 -50 55 32 -50 34 28 0.59 - 99 0 0 -50 18 53 23 13 6.7 58 345 31 -50 26 25 -50 11 23 -50 29 28 -50 8 20 0.59 - 98 0 0 -49 52 14 23 13 9.1 58 343 30 -49 59 47 -49 44 41 -50 2 51 -49 41 38 0.59 - 97 0 0 -49 25 0 23 13 11.6 58 341 30 -49 32 35 -49 17 26 -49 35 40 -49 14 22 0.59 - 96 0 0 -48 57 13 23 13 14.1 59 339 29 -49 4 50 -48 49 37 -49 7 55 -48 46 32 0.59 - 95 0 0 -48 28 52 23 13 16.6 59 337 28 -48 36 31 -48 21 15 -48 39 37 -48 18 9 0.59 - 94 0 0 -47 59 58 23 13 19.2 59 335 28 -48 7 38 -47 52 19 -48 10 45 -47 49 13 0.59 - 93 0 0 -47 30 30 23 13 21.8 59 332 27 -47 38 11 -47 22 49 -47 41 19 -47 19 43 0.59 - 92 0 0 -47 0 29 23 13 24.4 59 330 26 -47 8 12 -46 52 47 -47 11 20 -46 49 39 0.59 - 91 0 0 -46 29 55 23 13 27.1 59 328 25 -46 37 39 -46 22 11 -46 40 48 -46 19 3 0.59 - 90 0 0 -45 58 48 23 13 29.9 59 326 25 -46 6 34 -45 51 3 -46 9 43 -45 47 54 0.59 - 89 0 0 -45 27 9 23 13 32.6 59 324 24 -45 34 56 -45 19 22 -45 38 6 -45 16 13 0.59 - 88 0 0 -44 54 57 23 13 35.4 59 321 23 -45 2 46 -44 47 10 -45 5 56 -44 44 0 0.59 - 87 0 0 -44 22 14 23 13 38.2 59 319 22 -44 30 4 -44 14 26 -44 33 15 -44 11 15 0.59 - 86 0 0 -43 49 0 23 13 41.1 59 317 21 -43 56 51 -43 41 10 -44 0 2 -43 38 0 0.59 - 85 0 0 -43 15 16 23 13 44.0 59 315 21 -43 23 7 -43 7 25 -43 26 19 -43 4 14 0.59 - 84 0 0 -42 41 1 23 13 46.9 59 312 20 -42 48 54 -42 33 10 -42 52 6 -42 29 58 0.59 - 83 0 0 -42 6 18 23 13 49.8 59 310 19 -42 14 12 -41 58 25 -42 17 24 -41 55 14 0.59 - 82 0 0 -41 31 6 23 13 52.8 59 308 18 -41 39 1 -41 23 13 -41 42 13 -41 20 1 0.59 - 81 0 0 -40 55 27 23 13 55.8 58 306 17 -41 3 22 -40 47 33 -41 6 35 -40 44 20 0.59 - 80 0 0 -40 19 21 23 13 58.8 58 304 16 -40 27 17 -40 11 26 -40 30 30 -40 8 14 0.59 - 79 0 0 -39 42 49 23 14 1.8 58 301 15 -39 50 46 -39 34 54 -39 53 59 -39 31 41 0.60 - 78 0 0 -39 5 53 23 14 4.9 57 299 14 -39 13 50 -38 57 57 -39 17 3 -38 54 44 0.60 - 77 0 0 -38 28 33 23 14 8.0 57 297 13 -38 36 30 -38 20 37 -38 39 44 -38 17 24 0.60 - 76 0 0 -37 50 51 23 14 11.0 57 295 12 -37 58 49 -37 42 55 -38 2 3 -37 39 42 0.60 - 75 0 0 -37 12 48 23 14 14.1 56 293 11 -37 20 46 -37 4 52 -37 24 0 -37 1 38 0.60 - 74 0 0 -36 34 25 23 14 17.2 56 291 10 -36 42 22 -36 26 28 -36 45 36 -36 23 15 0.60 - 73 0 0 -35 55 43 23 14 20.4 55 290 9 -36 3 40 -35 47 47 -36 6 54 -35 44 33 0.60 - 72 0 0 -35 16 44 23 14 23.5 54 288 8 -35 24 41 -35 8 48 -35 27 55 -35 5 35 0.60 - 71 0 0 -34 37 29 23 14 26.6 54 286 7 -34 45 26 -34 29 33 -34 48 40 -34 26 20 0.60 - 70 0 0 -33 58 0 23 14 29.7 53 284 6 -34 5 57 -33 50 4 -34 9 11 -33 46 51 0.60 - 69 0 0 -33 18 18 23 14 32.8 53 283 5 -33 26 15 -33 10 23 -33 29 28 -33 7 10 0.60 - 68 0 0 -32 38 25 23 14 35.9 52 281 4 -32 46 21 -32 30 30 -32 49 34 -32 27 18 0.60 - 67 0 0 -31 58 22 23 14 39.0 51 279 3 -32 6 18 -31 50 28 -32 9 31 -31 47 16 0.60 - 66 0 0 -31 18 11 23 14 42.0 50 278 2 -31 26 6 -31 10 18 -31 29 19 -31 7 6 0.60 - 65 0 0 -30 37 54 23 14 45.1 50 276 1 -30 45 47 -30 30 1 -30 49 0 -30 26 49 0.60 - 64 0 0 -29 57 31 23 14 48.1 49 275 0 -30 5 24 -29 49 39 -30 8 36 -29 46 28 0.60 - 63 0 0 -29 17 5 23 14 51.1 48 274 -1 -29 24 57 -29 9 14 -29 28 9 -29 6 3 0.60 - 62 0 0 -28 36 38 23 14 54.1 47 272 -2 -28 44 29 -28 28 48 -28 47 40 -28 25 37 0.60 - 61 0 0 -27 56 10 23 14 57.1 46 271 -3 -28 4 0 -27 48 21 -28 7 11 -27 45 11 0.60 - 60 0 0 -27 15 44 23 15 0.0 45 270 -4 -27 23 33 -27 7 57 -27 26 43 -27 4 47 0.60 - 59 0 0 -26 35 22 23 15 2.9 44 269 -6 -26 43 9 -26 27 35 -26 46 19 -26 24 26 0.60 - 58 0 0 -25 55 4 23 15 5.7 44 268 -7 -26 2 50 -25 47 19 -26 6 0 -25 44 10 0.60 - 57 0 0 -25 14 53 23 15 8.5 43 267 -8 -25 22 38 -25 7 10 -25 25 47 -25 4 1 0.60 - 56 0 0 -24 34 51 23 15 11.3 42 266 -9 -24 42 34 -24 27 8 -24 45 42 -24 24 1 0.60 - 55 0 0 -23 54 57 23 15 14.0 41 265 -10 -24 2 39 -23 47 16 -24 5 47 -23 44 10 0.60 - 54 0 0 -23 15 16 23 15 16.7 40 264 -11 -23 22 56 -23 7 36 -23 26 3 -23 4 30 0.60 - 53 0 0 -22 35 46 23 15 19.3 39 263 -12 -22 43 25 -22 28 9 -22 46 31 -22 25 3 0.60 - 52 0 0 -21 56 32 23 15 21.9 38 262 -13 -22 4 9 -21 48 55 -22 7 14 -21 45 50 0.61 - 51 0 0 -21 17 32 23 15 24.4 37 262 -15 -21 25 8 -21 9 58 -21 28 13 -21 6 53 0.61 - 50 0 0 -20 38 50 23 15 26.8 36 261 -16 -20 46 24 -20 31 17 -20 49 28 -20 28 14 0.61 - 49 0 0 -20 0 27 23 15 29.2 35 260 -17 -20 7 58 -19 52 55 -20 11 2 -19 49 53 0.61 - 48 0 0 -19 22 23 23 15 31.5 34 260 -18 -19 29 53 -19 14 53 -19 32 56 -19 11 51 0.61 - 47 0 0 -18 44 40 23 15 33.8 32 259 -19 -18 52 8 -18 37 12 -18 55 10 -18 34 11 0.61 - 46 0 0 -18 7 19 23 15 36.0 31 258 -20 -18 14 46 -17 59 54 -18 17 47 -17 56 53 0.61 - 45 0 0 -17 30 22 23 15 38.1 30 258 -21 -17 37 47 -17 22 59 -17 40 48 -17 19 58 0.61 - 44 0 0 -16 53 50 23 15 40.2 29 257 -23 -17 1 13 -16 46 28 -17 4 13 -16 43 29 0.61 - 43 0 0 -16 17 43 23 15 42.2 28 257 -24 -16 25 4 -16 10 23 -16 28 3 -16 7 25 0.61 - 42 0 0 -15 42 3 23 15 44.1 27 256 -25 -15 49 22 -15 34 45 -15 52 21 -15 31 47 0.61 - 41 0 0 -15 6 51 23 15 45.9 26 256 -26 -15 14 8 -14 59 35 -15 17 6 -14 56 38 0.61 - 40 0 0 -14 32 7 23 15 47.7 25 256 -27 -14 39 23 -14 24 53 -14 42 20 -14 21 57 0.61 - 39 0 0 -13 57 53 23 15 49.4 24 255 -28 -14 5 7 -13 50 41 -14 8 3 -13 47 45 0.61 - 38 0 0 -13 24 10 23 15 51.0 23 255 -29 -13 31 21 -13 16 59 -13 34 17 -13 14 4 0.62 - 37 0 0 -12 50 58 23 15 52.6 22 254 -30 -12 58 7 -12 43 49 -13 1 2 -12 40 55 0.62 - 36 0 0 -12 18 17 23 15 54.0 21 254 -32 -12 25 25 -12 11 10 -12 28 18 -12 8 17 0.62 - 35 0 0 -11 46 9 23 15 55.4 20 254 -33 -11 53 15 -11 39 4 -11 56 8 -11 36 12 0.62 - 34 0 0 -11 14 35 23 15 56.7 18 254 -34 -11 21 39 -11 7 31 -11 24 31 -11 4 40 0.62 - 33 0 0 -10 43 34 23 15 58.0 17 253 -35 -10 50 36 -10 36 33 -10 53 28 -10 33 42 0.62 - 32 0 0 -10 13 8 23 15 59.2 16 253 -36 -10 20 8 -10 6 8 -10 22 59 -10 3 18 0.62 - 31 0 0 - 9 43 17 23 16 0.2 15 253 -37 - 9 50 15 - 9 36 19 - 9 53 5 - 9 33 29 0.63 - 30 0 0 - 9 14 1 23 16 1.3 14 253 -38 - 9 20 58 - 9 7 5 - 9 23 47 - 9 4 16 0.63 - 29 0 0 - 8 45 22 23 16 2.2 13 252 -39 - 8 52 16 - 8 38 27 - 8 55 5 - 8 35 39 0.63 - 28 0 0 - 8 17 18 23 16 3.0 12 252 -40 - 8 24 11 - 8 10 26 - 8 26 59 - 8 7 38 0.63 - 27 0 0 - 7 49 52 23 16 3.8 11 252 -41 - 7 56 43 - 7 43 1 - 7 59 30 - 7 40 14 0.64 - 26 0 0 - 7 23 2 23 16 4.5 10 252 -42 - 7 29 52 - 7 16 13 - 7 32 38 - 7 13 27 0.64 - 25 0 0 - 6 56 50 23 16 5.2 9 252 -43 - 7 3 38 - 6 50 2 - 7 6 24 - 6 47 17 0.65 - 24 0 0 - 6 31 16 23 16 5.7 8 252 -44 - 6 38 2 - 6 24 30 - 6 40 47 - 6 21 45 0.66 - 23 0 0 - 6 6 19 23 16 6.2 6 252 -45 - 6 13 4 - 5 59 35 - 6 15 48 - 5 56 51 0.67 - 22 0 0 - 5 42 1 23 16 6.6 5 251 -46 - 5 48 44 - 5 35 18 - 5 51 28 - 5 32 34 0.68 - 21 0 0 - 5 18 21 23 16 6.9 4 251 -47 - 5 25 3 - 5 11 39 - 5 27 46 - 5 8 57 0.70 - 20 0 0 - 4 55 19 23 16 7.2 3 251 -48 - 5 2 0 - 4 48 39 - 5 4 42 - 4 45 57 0.73 - 19 0 0 - 4 32 56 23 16 7.4 2 251 -49 - 4 39 35 - 4 26 18 - 4 42 17 - 4 23 36 0.80 - 18 0 0 - 4 11 12 23 16 7.5 1 251 -50 - 4 17 50 - 4 4 35 - 4 20 31 - 4 1 54 0.98 - 17 0 0 - 3 50 7 23 16 7.5 0 251 -51 - 3 56 44 - 3 43 32 - 3 59 24 - 3 40 51 4.84 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: TYC 6388-01316-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 29 42.0564 DE: -19 01 43.010 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 29 42.0562 DE: -19 01 43.011 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.7 * B mag [mag]: 10.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (21967) 1999 WS9 asteroid class: approx. diameter [km]: 20 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.97370 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 date of fit: 2023 Apr 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): 0.013", 0.001", 70.616° remarks: * orbital elements for (21967)1999 WS9 : Mean anomaly = 52.3329353300 deg Arg. of pericenter = 209.3340864312 deg Long. of node = 81.3970377850 deg Inclination = 10.3583277320 deg Eccentricity = 0.0813916021 Semimajor axis = 2.6817641294 AU Perihelion dist = 2.4634910505 AU Mag: H = 12.43, G = 0.15 Epoch of elements : MJD 60671.96774454 TDT (2024 Dec 27.9677) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr25,0.56,2024,12,27,23.225869,0.226125,-0.453755,17.985900,8.956271,0.004725,0.001348,-0.000001,-0.000001 -107.5518,-18.9028,-168.01,-23.27,False TYC 6388-01316-1,22.49501571,-19.0286138,10.88,10.66,10.54,0.0,0,,22.51742308,-18.9028429,7.13,6.80,0,0,0 21967,1999 WS9,17.79,19.771,2.9737,0,0,3.748,26.49,,1.2,0 0,52.1157,2024,12,27,209.3341,81.3970,10.3583,0.08139,2.68176,2.46349,12.43,5.0,0.15 1.203,0.0130,0.0010,71,0.0019,Known errors,1.05,0,-1,-1 20241227_1316-1,60140.76 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:11 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org