IOTA/IOTA-ES occultation update for (2161) Grissom / TYC 4970-00845-1 event on 2024 Dec 24, 17:26 UT Visible from Summary ------- On 2024 Dec 24 UT, the 16.76 km diameter asteroid (2161) Grissom will occult a 11.5 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.94 mag to 18.43 mag (the magnitude of the asteroid) for at most 0.640 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: 92 * date and approx. time of event: 2024 Dec 24, 17:22 - 2024 Dec 24, 17:29 * geocentric midpoint of event [JD]: 2460669.22658825 * magnitude of target star: 11.49 * magnitude drop [mag]: 6.94 * estimated maximum duration [s]: 0.640 * Moon: 34 % sunlit, 8° distance * Sun: 68° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 0.49 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.003", 112°) * approx speed of asteroid's shadow [km/s]: 26.1767 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4970-00845-1 by 2161 Grissom on 2024 Dec 24 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 121 0 0 -17 54 36 17 22 49.4 1 94 -44 -17 59 58 -17 49 15 -18 5 12 -17 44 2 .... 122 0 0 -17 59 32 17 22 49.5 2 94 -43 -18 4 53 -17 54 11 -18 10 8 -17 48 58 0.46 123 0 0 -18 4 44 17 22 49.7 3 94 -43 -18 10 6 -17 59 23 -18 15 20 -17 54 10 0.52 124 0 0 -18 10 14 17 22 50.0 4 93 -42 -18 15 35 -18 4 52 -18 20 50 -17 59 39 0.54 125 0 0 -18 15 59 17 22 50.3 5 93 -41 -18 21 21 -18 10 38 -18 26 36 -18 5 24 0.56 126 0 0 -18 22 1 17 22 50.7 6 93 -41 -18 27 24 -18 16 40 -18 32 38 -18 11 26 0.57 127 0 0 -18 28 20 17 22 51.2 6 92 -40 -18 33 42 -18 22 58 -18 38 57 -18 17 44 0.58 128 0 0 -18 34 55 17 22 51.8 7 92 -40 -18 40 17 -18 29 33 -18 45 33 -18 24 18 0.58 129 0 0 -18 41 46 17 22 52.5 8 92 -39 -18 47 9 -18 36 24 -18 52 24 -18 31 9 0.58 130 0 0 -18 48 53 17 22 53.2 9 91 -38 -18 54 16 -18 43 30 -18 59 31 -18 38 16 0.59 131 0 0 -18 56 16 17 22 54.0 10 91 -38 -19 1 39 -18 50 53 -19 6 55 -18 45 38 0.59 132 0 0 -19 3 55 17 22 54.9 11 91 -37 -19 9 18 -18 58 32 -19 14 34 -18 53 17 0.59 133 0 0 -19 11 49 17 22 55.9 12 90 -36 -19 17 13 -19 6 26 -19 22 29 -19 1 11 0.59 134 0 0 -19 19 59 17 22 56.9 13 90 -36 -19 25 23 -19 14 36 -19 30 39 -19 9 20 0.60 135 0 0 -19 28 25 17 22 58.1 14 90 -35 -19 33 48 -19 23 1 -19 39 5 -19 17 45 0.60 136 0 0 -19 37 5 17 22 59.3 15 89 -34 -19 42 29 -19 31 41 -19 47 46 -19 26 25 0.60 137 0 0 -19 46 1 17 23 0.5 16 89 -33 -19 51 25 -19 40 36 -19 56 42 -19 35 20 0.60 138 0 0 -19 55 11 17 23 1.9 17 89 -33 -20 0 36 -19 49 47 -20 5 53 -19 44 30 0.60 139 0 0 -20 4 36 17 23 3.3 18 88 -32 -20 10 1 -19 59 11 -20 15 18 -19 53 55 0.60 140 0 0 -20 14 16 17 23 4.8 19 88 -31 -20 19 41 -20 8 51 -20 24 58 -20 3 34 0.60 141 0 0 -20 24 10 17 23 6.4 20 87 -30 -20 29 35 -20 18 45 -20 34 53 -20 13 27 0.60 142 0 0 -20 34 18 17 23 8.1 21 87 -29 -20 39 43 -20 28 52 -20 45 1 -20 23 35 0.60 143 0 0 -20 44 40 17 23 9.8 22 86 -29 -20 50 5 -20 39 14 -20 55 24 -20 33 56 0.60 144 0 0 -20 55 15 17 23 11.6 23 86 -28 -21 0 41 -20 49 49 -21 6 0 -20 44 32 0.61 145 0 0 -21 6 4 17 23 13.5 23 85 -27 -21 11 31 -21 0 38 -21 16 50 -20 55 20 0.61 146 0 0 -21 17 7 17 23 15.4 24 85 -26 -21 22 33 -21 11 40 -21 27 52 -21 6 22 0.61 147 0 0 -21 28 22 17 23 17.4 25 85 -25 -21 33 49 -21 22 56 -21 39 8 -21 17 37 0.61 148 0 0 -21 39 50 17 23 19.5 26 84 -25 -21 45 17 -21 34 23 -21 50 37 -21 29 5 0.61 149 0 0 -21 51 31 17 23 21.6 27 84 -24 -21 56 58 -21 46 4 -22 2 18 -21 40 45 0.61 150 0 0 -22 3 24 17 23 23.8 28 83 -23 -22 8 52 -21 57 57 -22 14 12 -21 52 38 0.61 151 0 0 -22 15 29 17 23 26.1 29 82 -22 -22 20 57 -22 10 2 -22 26 18 -22 4 42 0.61 152 0 0 -22 27 46 17 23 28.5 30 82 -21 -22 33 14 -22 22 18 -22 38 35 -22 16 59 0.61 153 0 0 -22 40 15 17 23 30.9 31 81 -20 -22 45 43 -22 34 47 -22 51 4 -22 29 27 0.61 154 0 0 -22 52 54 17 23 33.3 32 81 -19 -22 58 23 -22 47 26 -23 3 44 -22 42 6 0.61 155 0 0 -23 5 45 17 23 35.9 33 80 -19 -23 11 14 -23 0 16 -23 16 35 -22 54 56 0.61 156 0 0 -23 18 46 17 23 38.5 33 79 -18 -23 24 16 -23 13 18 -23 29 37 -23 7 57 0.61 157 0 0 -23 31 58 17 23 41.1 34 79 -17 -23 37 27 -23 26 29 -23 42 49 -23 21 8 0.61 158 0 0 -23 45 20 17 23 43.8 35 78 -16 -23 50 50 -23 39 51 -23 56 12 -23 34 29 0.61 159 0 0 -23 58 51 17 23 46.6 36 77 -15 -24 4 21 -23 53 22 -24 9 44 -23 48 0 0.61 160 0 0 -24 12 32 17 23 49.4 37 77 -14 -24 18 3 -24 7 3 -24 23 25 -24 1 41 0.61 161 0 0 -24 26 23 17 23 52.3 38 76 -13 -24 31 53 -24 20 53 -24 37 16 -24 15 31 0.61 162 0 0 -24 40 22 17 23 55.2 38 75 -12 -24 45 52 -24 34 51 -24 51 15 -24 29 29 0.61 163 0 0 -24 54 29 17 23 58.2 39 74 -11 -25 0 0 -24 48 59 -25 5 23 -24 43 36 0.61 164 0 0 -25 8 45 17 24 1.2 40 73 -11 -25 14 16 -25 3 14 -25 19 40 -24 57 52 0.61 165 0 0 -25 23 9 17 24 4.3 41 73 -10 -25 28 40 -25 17 38 -25 34 4 -25 12 15 0.61 166 0 0 -25 37 40 17 24 7.4 42 72 -9 -25 43 11 -25 32 8 -25 48 35 -25 26 45 0.61 167 0 0 -25 52 18 17 24 10.5 43 71 -8 -25 57 50 -25 46 47 -26 3 14 -25 41 23 0.61 168 0 0 -26 7 3 17 24 13.7 43 70 -7 -26 12 35 -26 1 31 -26 17 59 -25 56 8 0.61 169 0 0 -26 21 55 17 24 17.0 44 69 -6 -26 27 27 -26 16 23 -26 32 51 -26 10 59 0.61 170 0 0 -26 36 52 17 24 20.3 45 68 -5 -26 42 25 -26 31 20 -26 47 50 -26 25 56 0.61 171 0 0 -26 51 56 17 24 23.6 46 67 -4 -26 57 28 -26 46 24 -27 2 53 -26 41 0 0.61 172 0 0 -27 7 5 17 24 27.0 46 66 -3 -27 12 38 -27 1 32 -27 18 3 -26 56 8 0.61 173 0 0 -27 22 19 17 24 30.4 47 65 -2 -27 27 52 -27 16 46 -27 33 17 -27 11 22 0.61 174 0 0 -27 37 38 17 24 33.8 48 64 -1 -27 43 11 -27 32 5 -27 48 36 -27 26 40 0.61 175 0 0 -27 53 1 17 24 37.3 48 62 -1 -27 58 34 -27 47 28 -28 3 59 -27 42 3 0.61 176 0 0 -28 8 28 17 24 40.8 49 61 0 -28 14 1 -28 2 55 -28 19 27 -27 57 30 0.61 177 0 0 -28 23 58 17 24 44.3 50 60 1 -28 29 32 -28 18 25 -28 34 58 -28 13 0 0.61 178 0 0 -28 39 32 17 24 47.8 50 59 2 -28 45 6 -28 33 59 -28 50 32 -28 28 34 0.61 179 0 0 -28 55 9 17 24 51.4 51 57 3 -29 0 42 -28 49 35 -29 6 9 -28 44 10 0.61 -180 0 0 -29 10 48 17 24 55.0 52 56 4 -29 16 22 -29 5 14 -29 21 48 -28 59 49 0.61 -179 0 0 -29 26 29 17 24 58.6 52 54 5 -29 32 3 -29 20 56 -29 37 30 -29 15 30 0.61 -178 0 0 -29 42 12 17 25 2.3 53 53 6 -29 47 46 -29 36 39 -29 53 13 -29 31 13 0.61 -177 0 0 -29 57 57 17 25 5.9 53 52 7 -30 3 31 -29 52 23 -30 8 58 -29 46 58 0.61 -176 0 0 -30 13 43 17 25 9.6 54 50 8 -30 19 17 -30 8 9 -30 24 44 -30 2 43 0.61 -175 0 0 -30 29 29 17 25 13.3 54 48 9 -30 35 3 -30 23 55 -30 40 30 -30 18 29 0.61 -174 0 0 -30 45 15 17 25 17.0 55 47 10 -30 50 50 -30 39 41 -30 56 16 -30 34 15 0.61 -173 0 0 -31 1 2 17 25 20.7 55 45 10 -31 6 36 -30 55 27 -31 12 3 -30 50 2 0.61 -172 0 0 -31 16 48 17 25 24.5 56 43 11 -31 22 22 -31 11 13 -31 27 49 -31 5 48 0.61 -171 0 0 -31 32 33 17 25 28.2 56 42 12 -31 38 7 -31 26 59 -31 43 34 -31 21 33 0.61 -170 0 0 -31 48 17 17 25 31.9 56 40 13 -31 53 51 -31 42 43 -31 59 18 -31 37 17 0.61 -169 0 0 -32 3 59 17 25 35.7 57 38 14 -32 9 34 -31 58 25 -32 15 1 -31 52 59 0.61 -168 0 0 -32 19 40 17 25 39.4 57 36 15 -32 25 14 -32 14 6 -32 30 41 -32 8 40 0.61 -167 0 0 -32 35 18 17 25 43.2 57 35 16 -32 40 53 -32 29 44 -32 46 20 -32 24 18 0.61 -166 0 0 -32 50 54 17 25 47.0 57 33 17 -32 56 29 -32 45 20 -33 1 56 -32 39 54 0.61 -165 0 0 -33 6 27 17 25 50.7 58 31 18 -33 12 2 -33 0 53 -33 17 29 -32 55 27 0.61 -164 0 0 -33 21 57 17 25 54.5 58 29 18 -33 27 31 -33 16 23 -33 32 58 -33 10 57 0.61 -163 0 0 -33 37 23 17 25 58.2 58 27 19 -33 42 58 -33 31 49 -33 48 24 -33 26 24 0.61 -162 0 0 -33 52 46 17 26 2.0 58 25 20 -33 58 20 -33 47 12 -34 3 47 -33 41 46 0.61 -161 0 0 -34 8 4 17 26 5.7 58 23 21 -34 13 38 -34 2 30 -34 19 5 -33 57 4 0.61 -160 0 0 -34 23 18 17 26 9.4 58 21 22 -34 28 52 -34 17 44 -34 34 18 -34 12 18 0.61 -159 0 0 -34 38 27 17 26 13.1 58 19 23 -34 44 1 -34 32 53 -34 49 27 -34 27 27 0.61 -158 0 0 -34 53 30 17 26 16.8 58 17 24 -34 59 4 -34 47 57 -35 4 31 -34 42 31 0.61 -157 0 0 -35 8 29 17 26 20.5 58 15 25 -35 14 2 -35 2 55 -35 19 29 -34 57 30 0.61 -156 0 0 -35 23 21 17 26 24.2 58 13 25 -35 28 55 -35 17 48 -35 34 21 -35 12 23 0.61 -155 0 0 -35 38 8 17 26 27.9 58 11 26 -35 43 42 -35 32 35 -35 49 8 -35 27 10 0.61 -154 0 0 -35 52 48 17 26 31.5 58 9 27 -35 58 22 -35 47 15 -36 3 48 -35 41 50 0.61 -153 0 0 -36 7 22 17 26 35.2 58 7 28 -36 12 55 -36 1 49 -36 18 21 -35 56 24 0.61 -152 0 0 -36 21 49 17 26 38.8 58 5 29 -36 27 22 -36 16 16 -36 32 48 -36 10 52 0.61 -151 0 0 -36 36 9 17 26 42.4 58 3 30 -36 41 42 -36 30 36 -36 47 7 -36 25 12 0.61 -150 0 0 -36 50 22 17 26 46.0 58 1 31 -36 55 54 -36 44 49 -37 1 20 -36 39 25 0.61 -149 0 0 -37 4 27 17 26 49.5 57 359 31 -37 9 59 -36 58 54 -37 15 24 -36 53 30 0.61 -148 0 0 -37 18 24 17 26 53.0 57 357 32 -37 23 56 -37 12 52 -37 29 21 -37 7 28 0.61 -147 0 0 -37 32 13 17 26 56.5 57 356 33 -37 37 45 -37 26 41 -37 43 10 -37 21 17 0.61 -146 0 0 -37 45 54 17 27 0.0 56 354 34 -37 51 26 -37 40 22 -37 56 50 -37 34 59 0.61 -145 0 0 -37 59 26 17 27 3.5 56 352 35 -38 4 58 -37 53 55 -38 10 22 -37 48 31 0.61 -144 0 0 -38 12 50 17 27 6.9 56 350 36 -38 18 22 -38 7 19 -38 23 46 -38 1 55 0.61 -143 0 0 -38 26 5 17 27 10.3 55 348 36 -38 31 36 -38 20 34 -38 37 0 -38 15 11 0.61 -142 0 0 -38 39 10 17 27 13.7 55 347 37 -38 44 41 -38 33 39 -38 50 5 -38 28 17 0.61 -141 0 0 -38 52 6 17 27 17.0 55 345 38 -38 57 37 -38 46 36 -39 3 1 -38 41 13 0.61 -140 0 0 -39 4 53 17 27 20.4 54 343 39 -39 10 24 -38 59 23 -39 15 47 -38 54 1 0.61 -139 0 0 -39 17 30 17 27 23.7 54 342 40 -39 23 1 -39 12 0 -39 28 24 -39 6 38 0.61 -138 0 0 -39 29 57 17 27 26.9 53 340 40 -39 35 28 -39 24 27 -39 40 50 -39 19 6 0.61 -137 0 0 -39 42 15 17 27 30.1 53 339 41 -39 47 44 -39 36 45 -39 53 7 -39 31 23 0.61 -136 0 0 -39 54 21 17 27 33.3 52 337 42 -39 59 51 -39 48 52 -40 5 13 -39 43 31 0.61 -135 0 0 -40 6 18 17 27 36.5 52 336 43 -40 11 48 -40 0 49 -40 17 10 -39 55 28 0.61 -134 0 0 -40 18 4 17 27 39.6 51 334 43 -40 23 33 -40 12 35 -40 28 55 -40 7 15 0.61 -133 0 0 -40 29 40 17 27 42.7 51 333 44 -40 35 9 -40 24 11 -40 40 30 -40 18 50 0.61 -132 0 0 -40 41 4 17 27 45.8 50 332 45 -40 46 33 -40 35 36 -40 51 54 -40 30 16 0.61 -131 0 0 -40 52 18 17 27 48.8 50 330 46 -40 57 47 -40 46 50 -41 3 8 -40 41 30 0.61 -130 0 0 -41 3 21 17 27 51.8 49 329 46 -41 8 49 -40 57 53 -41 14 10 -40 52 33 0.61 -129 0 0 -41 14 12 17 27 54.8 49 328 47 -41 19 40 -41 8 45 -41 25 1 -41 3 25 0.61 -128 0 0 -41 24 53 17 27 57.7 48 326 48 -41 30 20 -41 19 25 -41 35 41 -41 14 6 0.61 -127 0 0 -41 35 22 17 28 0.6 48 325 48 -41 40 49 -41 29 55 -41 46 9 -41 24 36 0.61 -126 0 0 -41 45 39 17 28 3.4 47 324 49 -41 51 6 -41 40 12 -41 56 26 -41 34 54 0.61 -125 0 0 -41 55 45 17 28 6.2 46 323 50 -42 1 12 -41 50 19 -42 6 31 -41 45 0 0.61 -124 0 0 -42 5 39 17 28 9.0 46 321 51 -42 11 6 -42 0 13 -42 16 25 -41 54 55 0.61 -123 0 0 -42 15 22 17 28 11.7 45 320 51 -42 20 48 -42 9 56 -42 26 7 -42 4 38 0.61 -122 0 0 -42 24 52 17 28 14.4 45 319 52 -42 30 18 -42 19 27 -42 35 37 -42 14 9 0.61 -121 0 0 -42 34 11 17 28 17.1 44 318 53 -42 39 37 -42 28 46 -42 44 55 -42 23 28 0.61 -120 0 0 -42 43 18 17 28 19.7 43 317 53 -42 48 43 -42 37 53 -42 54 1 -42 32 35 0.61 -119 0 0 -42 52 12 17 28 22.3 43 316 54 -42 57 38 -42 46 48 -43 2 55 -42 41 31 0.61 -118 0 0 -43 0 55 17 28 24.8 42 315 54 -43 6 20 -42 55 30 -43 11 37 -42 50 14 0.61 -117 0 0 -43 9 25 17 28 27.3 42 314 55 -43 14 50 -43 4 1 -43 20 7 -42 58 44 0.61 -116 0 0 -43 17 43 17 28 29.8 41 313 56 -43 23 8 -43 12 19 -43 28 25 -43 7 3 0.61 -115 0 0 -43 25 49 17 28 32.2 40 312 56 -43 31 13 -43 20 25 -43 36 30 -43 15 9 0.61 -114 0 0 -43 33 42 17 28 34.6 40 311 57 -43 39 6 -43 28 19 -43 44 23 -43 23 3 0.61 -113 0 0 -43 41 23 17 28 37.0 39 310 58 -43 46 47 -43 36 0 -43 52 3 -43 30 45 0.61 -112 0 0 -43 48 52 17 28 39.3 38 309 58 -43 54 15 -43 43 29 -43 59 32 -43 38 14 0.61 -111 0 0 -43 56 8 17 28 41.6 38 308 59 -44 1 31 -43 50 45 -44 6 47 -43 45 30 0.61 -110 0 0 -44 3 12 17 28 43.8 37 307 59 -44 8 35 -43 57 49 -44 13 50 -43 52 34 0.61 -109 0 0 -44 10 3 17 28 46.0 36 306 60 -44 15 25 -44 4 40 -44 20 41 -43 59 26 0.61 -108 0 0 -44 16 41 17 28 48.2 36 305 60 -44 22 4 -44 11 19 -44 27 19 -44 6 4 0.61 -107 0 0 -44 23 7 17 28 50.3 35 304 61 -44 28 29 -44 17 45 -44 33 44 -44 12 31 0.61 -106 0 0 -44 29 20 17 28 52.3 34 303 61 -44 34 42 -44 23 58 -44 39 57 -44 18 44 0.61 -105 0 0 -44 35 20 17 28 54.4 34 302 62 -44 40 42 -44 29 59 -44 45 57 -44 24 45 0.62 -104 0 0 -44 41 8 17 28 56.4 33 301 62 -44 46 30 -44 35 47 -44 51 44 -44 30 33 0.62 -103 0 0 -44 46 43 17 28 58.3 32 300 63 -44 52 5 -44 41 22 -44 57 19 -44 36 9 0.62 -102 0 0 -44 52 5 17 29 0.2 32 299 63 -44 57 27 -44 46 44 -45 2 41 -44 41 31 0.62 -101 0 0 -44 57 15 17 29 2.1 31 298 64 -45 2 36 -44 51 54 -45 7 50 -44 46 41 0.62 -100 0 0 -45 2 12 17 29 4.0 30 298 64 -45 7 33 -44 56 51 -45 12 46 -44 51 38 0.62 - 99 0 0 -45 6 56 17 29 5.8 30 297 64 -45 12 16 -45 1 35 -45 17 30 -44 56 23 0.62 - 98 0 0 -45 11 27 17 29 7.5 29 296 65 -45 16 47 -45 6 7 -45 22 1 -45 0 54 0.62 - 97 0 0 -45 15 45 17 29 9.2 28 295 65 -45 21 6 -45 10 25 -45 26 19 -45 5 13 0.62 - 96 0 0 -45 19 51 17 29 10.9 28 294 65 -45 25 11 -45 14 31 -45 30 24 -45 9 19 0.62 - 95 0 0 -45 23 43 17 29 12.5 27 293 66 -45 29 4 -45 18 24 -45 34 17 -45 13 12 0.62 - 94 0 0 -45 27 23 17 29 14.1 26 292 66 -45 32 43 -45 22 4 -45 37 56 -45 16 52 0.62 - 93 0 0 -45 30 50 17 29 15.7 26 292 66 -45 36 10 -45 25 31 -45 41 23 -45 20 19 0.62 - 92 0 0 -45 34 5 17 29 17.2 25 291 66 -45 39 24 -45 28 45 -45 44 37 -45 23 34 0.62 - 91 0 0 -45 37 6 17 29 18.7 24 290 67 -45 42 26 -45 31 47 -45 47 38 -45 26 35 0.62 - 90 0 0 -45 39 55 17 29 20.1 24 289 67 -45 45 14 -45 34 35 -45 50 27 -45 29 24 0.62 - 89 0 0 -45 42 30 17 29 21.5 23 288 67 -45 47 50 -45 37 11 -45 53 2 -45 32 0 0.62 - 88 0 0 -45 44 53 17 29 22.9 22 288 67 -45 50 13 -45 39 34 -45 55 25 -45 34 23 0.62 - 87 0 0 -45 47 3 17 29 24.2 22 287 67 -45 52 23 -45 41 44 -45 57 35 -45 36 33 0.62 - 86 0 0 -45 49 0 17 29 25.5 21 286 67 -45 54 20 -45 43 42 -45 59 32 -45 38 30 0.62 - 85 0 0 -45 50 45 17 29 26.7 20 285 67 -45 56 4 -45 45 26 -46 1 16 -45 40 15 0.62 - 84 0 0 -45 52 16 17 29 27.9 20 285 67 -45 57 35 -45 46 57 -46 2 47 -45 41 46 0.62 - 83 0 0 -45 53 35 17 29 29.1 19 284 67 -45 58 54 -45 48 16 -46 4 6 -45 43 5 0.62 - 82 0 0 -45 54 41 17 29 30.2 18 283 67 -46 0 0 -45 49 22 -46 5 12 -45 44 11 0.62 - 81 0 0 -45 55 34 17 29 31.2 18 282 67 -46 0 53 -45 50 15 -46 6 5 -45 45 4 0.62 - 80 0 0 -45 56 14 17 29 32.3 17 281 67 -46 1 33 -45 50 55 -46 6 45 -45 45 44 0.62 - 79 0 0 -45 56 41 17 29 33.3 16 281 67 -46 2 0 -45 51 23 -46 7 12 -45 46 12 0.62 - 78 0 0 -45 56 56 17 29 34.2 15 280 67 -46 2 15 -45 51 37 -46 7 27 -45 46 26 0.63 - 77 0 0 -45 56 58 17 29 35.1 15 279 67 -46 2 17 -45 51 39 -46 7 28 -45 46 28 0.63 - 76 0 0 -45 56 46 17 29 36.0 14 278 67 -46 2 6 -45 51 28 -46 7 17 -45 46 17 0.63 - 75 0 0 -45 56 23 17 29 36.8 13 278 67 -46 1 42 -45 51 4 -46 6 53 -45 45 53 0.63 - 74 0 0 -45 55 46 17 29 37.6 13 277 66 -46 1 5 -45 50 27 -46 6 17 -45 45 16 0.63 - 73 0 0 -45 54 56 17 29 38.4 12 276 66 -46 0 16 -45 49 38 -46 5 28 -45 44 27 0.63 - 72 0 0 -45 53 54 17 29 39.1 11 276 66 -45 59 13 -45 48 35 -46 4 25 -45 43 24 0.63 - 71 0 0 -45 52 39 17 29 39.8 11 275 66 -45 57 59 -45 47 20 -46 3 11 -45 42 9 0.63 - 70 0 0 -45 51 12 17 29 40.4 10 274 65 -45 56 31 -45 45 53 -46 1 43 -45 40 41 0.64 - 69 0 0 -45 49 31 17 29 41.0 9 273 65 -45 54 51 -45 44 12 -46 0 3 -45 39 1 0.64 - 68 0 0 -45 47 38 17 29 41.5 9 273 65 -45 52 58 -45 42 19 -45 58 10 -45 37 7 0.64 - 67 0 0 -45 45 32 17 29 42.0 8 272 64 -45 50 52 -45 40 13 -45 56 4 -45 35 1 0.64 - 66 0 0 -45 43 14 17 29 42.5 7 271 64 -45 48 33 -45 37 54 -45 53 46 -45 32 43 0.65 - 65 0 0 -45 40 42 17 29 42.9 6 270 64 -45 46 2 -45 35 23 -45 51 15 -45 30 11 0.65 - 64 0 0 -45 37 58 17 29 43.3 6 270 63 -45 43 18 -45 32 39 -45 48 31 -45 27 27 0.65 - 63 0 0 -45 35 2 17 29 43.6 5 269 63 -45 40 22 -45 29 42 -45 45 34 -45 24 30 0.66 - 62 0 0 -45 31 52 17 29 43.9 4 268 62 -45 37 13 -45 26 33 -45 42 25 -45 21 20 0.67 - 61 0 0 -45 28 30 17 29 44.1 4 268 62 -45 33 51 -45 23 10 -45 39 4 -45 17 58 0.68 - 60 0 0 -45 24 56 17 29 44.3 3 267 61 -45 30 16 -45 19 36 -45 35 30 -45 14 23 0.70 - 59 0 0 -45 21 9 17 29 44.5 2 266 61 -45 26 29 -45 15 49 -45 31 43 -45 10 36 0.73 - 58 0 0 -45 17 9 17 29 44.6 2 265 60 -45 22 30 -45 11 49 -45 27 43 -45 6 36 0.78 - 57 0 0 -45 12 57 17 29 44.7 1 265 60 -45 18 18 -45 7 36 -45 23 31 -45 2 23 0.92 - 56 0 0 -45 8 32 17 29 44.7 0 264 59 -45 13 53 -45 3 11 -45 19 7 -44 57 58 2.78 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: TYC 4970-00845-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 42 46.6840 DE: -04 11 35.993 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 42 46.6841 DE: -04 11 35.994 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.200) * V mag [mag]: 11.5 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2161) Grissom asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.007 distance from Earth [AU]: 3.42830 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.009", 0.003", 111.766° remarks: * orbital elements for (2161)Grissom : Mean anomaly = 171.1989555450 deg Arg. of pericenter = 248.9294133303 deg Long. of node = 126.3629968536 deg Inclination = 7.3016353929 deg Eccentricity = 0.1625687358 Semimajor axis = 2.7472837415 AU Perihelion dist = 2.3006612967 AU Mag: H = 12.35, G = 0.15 Epoch of elements : MJD 60668.72658850 TDT (2024 Dec 24.7266) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr27,0.64,2024,12,24,17.438118,-0.122901,-0.506450,14.358657,-3.482248,-0.005130,0.002238,-0.000001,0.000000 -149.2856,-4.3192,-81.59,-23.39,False TYC 4970-00845-1,13.71296774,-4.1933312,11.75,11.49,11.35,0.0,0,,13.73443611,-4.3192064,6.94,6.64,0,0,0 2161,Grissom,18.43,16.760,3.4283,0,0,2.463,-8.93,,1.4,0 0,171.0417,2024,12,24,248.9294,126.3630,7.3016,0.16257,2.74728,2.30066,12.35,5.0,0.15 1.488,0.0090,0.0031,112,0.0033,Known errors,1.38,0,-1,-1 20241224_0845-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org