IOTA/IOTA-ES occultation update for (2161) Grissom / HIP 64963 event on 2024 Dec 02, 10:58 UT Visible from Summary ------- On 2024 Dec 02 UT, the 16.6063378842874 km diameter asteroid (2161) Grissom will occult a 9.1 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 9.37 mag to 18.51 mag (the magnitude of the asteroid) for at most 0.500 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: 94 * date and approx. time of event: 2024 Dec 02, 10:55 - 2024 Dec 02, 11:01 * geocentric midpoint of event [JD]: 2460646.95741296 * magnitude of target star: 9.14 * magnitude drop [mag]: 9.37 * estimated maximum duration [s]: 0.500 * Moon: 2 % sunlit, 66° distance * Sun: 51° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 19 * 1 sigma uncertainty interval [path widths]: +/- 0.45 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.003", 111°) * approx speed of asteroid's shadow [km/s]: 33.5419 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 64963 by 2161 Grissom on 2024 Dec 2 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 -123 0 0 41 55 44 10 55 48.2 0 94 -49 41 50 43 42 0 47 41 46 9 42 5 21 .... -122 0 0 41 52 44 10 55 48.2 1 94 -48 41 47 42 41 57 47 41 43 8 42 2 21 -0.25 -121 0 0 41 49 29 10 55 48.3 2 95 -47 41 44 27 41 54 31 41 39 52 41 59 6 -0.34 -120 0 0 41 45 58 10 55 48.4 2 96 -46 41 40 55 41 51 0 41 36 21 41 55 35 -0.38 -119 0 0 41 42 12 10 55 48.5 3 96 -46 41 37 9 41 47 14 41 32 35 41 51 49 -0.40 -118 0 0 41 38 10 10 55 48.7 4 97 -45 41 33 7 41 43 13 41 28 33 41 47 48 -0.41 -117 0 0 41 33 53 10 55 48.9 5 98 -44 41 28 50 41 38 56 41 24 16 41 43 31 -0.41 -116 0 0 41 29 21 10 55 49.1 5 98 -44 41 24 18 41 34 24 41 19 43 41 38 59 -0.42 -115 0 0 41 24 33 10 55 49.4 6 99 -43 41 19 30 41 29 36 41 14 55 41 34 12 -0.42 -114 0 0 41 19 30 10 55 49.7 7 100 -42 41 14 27 41 24 33 41 9 52 41 29 9 -0.43 -113 0 0 41 14 12 10 55 50.1 8 100 -41 41 9 8 41 19 15 41 4 33 41 23 51 -0.43 -112 0 0 41 8 38 10 55 50.5 9 101 -41 41 3 34 41 13 42 40 58 59 41 18 18 -0.43 -111 0 0 41 2 49 10 55 50.9 9 102 -40 40 57 45 41 7 53 40 53 9 41 12 29 -0.43 -110 0 0 40 56 44 10 55 51.4 10 102 -39 40 51 40 41 1 48 40 47 4 41 6 25 -0.44 -109 0 0 40 50 24 10 55 51.9 11 103 -38 40 45 20 40 55 29 40 40 44 41 0 6 -0.44 -108 0 0 40 43 49 10 55 52.4 12 104 -38 40 38 45 40 48 54 40 34 9 40 53 31 -0.44 -107 0 0 40 36 59 10 55 53.0 12 104 -37 40 31 54 40 42 4 40 27 18 40 46 41 -0.44 -106 0 0 40 29 53 10 55 53.6 13 105 -36 40 24 48 40 34 58 40 20 12 40 39 36 -0.44 -105 0 0 40 22 32 10 55 54.3 14 106 -35 40 17 27 40 27 38 40 12 50 40 32 15 -0.44 -104 0 0 40 14 56 10 55 55.0 15 106 -35 40 9 51 40 20 2 40 5 13 40 24 39 -0.44 -103 0 0 40 7 5 10 55 55.7 15 107 -34 40 1 59 40 12 11 39 57 21 40 16 48 -0.44 -102 0 0 39 58 58 10 55 56.5 16 108 -33 39 53 52 40 4 4 39 49 14 40 8 42 -0.44 -101 0 0 39 50 36 10 55 57.3 17 108 -32 39 45 30 39 55 42 39 40 52 40 0 21 -0.44 -100 0 0 39 41 59 10 55 58.2 18 109 -31 39 36 52 39 47 6 39 32 14 39 51 44 -0.44 - 99 0 0 39 33 6 10 55 59.1 19 110 -31 39 28 0 39 38 14 39 23 21 39 42 52 -0.45 - 98 0 0 39 23 59 10 56 0.0 19 110 -30 39 18 52 39 29 6 39 14 13 39 33 46 -0.45 - 97 0 0 39 14 37 10 56 1.0 20 111 -29 39 9 29 39 19 44 39 4 50 39 24 24 -0.45 - 96 0 0 39 4 59 10 56 2.0 21 112 -28 38 59 51 39 10 7 38 55 12 39 14 47 -0.45 - 95 0 0 38 55 7 10 56 3.0 22 112 -28 38 49 59 39 0 15 38 45 19 39 4 55 -0.45 - 94 0 0 38 44 59 10 56 4.1 22 113 -27 38 39 51 38 50 8 38 35 11 38 54 48 -0.45 - 93 0 0 38 34 37 10 56 5.3 23 114 -26 38 29 28 38 39 46 38 24 48 38 44 26 -0.45 - 92 0 0 38 24 0 10 56 6.5 24 115 -25 38 18 51 38 29 9 38 14 10 38 33 50 -0.45 - 91 0 0 38 13 8 10 56 7.7 25 115 -24 38 7 59 38 18 17 38 3 18 38 22 58 -0.45 - 90 0 0 38 2 1 10 56 8.9 26 116 -24 37 56 52 38 7 11 37 52 11 38 11 52 -0.45 - 89 0 0 37 50 40 10 56 10.3 26 117 -23 37 45 30 37 55 50 37 40 49 38 0 32 -0.45 - 88 0 0 37 39 4 10 56 11.6 27 117 -22 37 33 54 37 44 15 37 29 13 37 48 57 -0.45 - 87 0 0 37 27 14 10 56 13.0 28 118 -21 37 22 4 37 32 25 37 17 22 37 37 7 -0.45 - 86 0 0 37 15 10 10 56 14.4 29 119 -20 37 9 59 37 20 21 37 5 17 37 25 3 -0.45 - 85 0 0 37 2 51 10 56 15.9 30 120 -19 36 57 40 37 8 2 36 52 57 37 12 45 -0.45 - 84 0 0 36 50 18 10 56 17.4 30 120 -19 36 45 6 36 55 29 36 40 24 37 0 13 -0.45 - 83 0 0 36 37 31 10 56 19.0 31 121 -18 36 32 19 36 42 43 36 27 36 36 47 26 -0.45 - 82 0 0 36 24 30 10 56 20.6 32 122 -17 36 19 18 36 29 42 36 14 34 36 34 26 -0.45 - 81 0 0 36 11 15 10 56 22.2 33 122 -16 36 6 3 36 16 28 36 1 19 36 21 12 -0.45 - 80 0 0 35 57 47 10 56 23.9 34 123 -15 35 52 34 36 3 0 35 47 50 36 7 44 -0.45 - 79 0 0 35 44 5 10 56 25.7 34 124 -14 35 38 52 35 49 18 35 34 7 35 54 3 -0.45 - 78 0 0 35 30 9 10 56 27.4 35 125 -14 35 24 56 35 35 23 35 20 12 35 40 8 -0.45 - 77 0 0 35 16 1 10 56 29.3 36 126 -13 35 10 47 35 21 15 35 6 2 35 26 0 -0.45 - 76 0 0 35 1 39 10 56 31.1 37 126 -12 34 56 25 35 6 54 34 51 40 35 11 39 -0.45 - 75 0 0 34 47 5 10 56 33.0 38 127 -11 34 41 50 34 52 19 34 37 5 34 57 5 -0.45 - 74 0 0 34 32 18 10 56 35.0 38 128 -10 34 27 3 34 37 32 34 22 17 34 42 19 -0.45 - 73 0 0 34 17 18 10 56 37.0 39 129 -9 34 12 3 34 22 33 34 7 17 34 27 19 -0.45 - 72 0 0 34 2 6 10 56 39.0 40 130 -8 33 56 50 34 7 21 33 52 4 34 12 8 -0.45 - 71 0 0 33 46 41 10 56 41.1 41 130 -7 33 41 26 33 51 57 33 36 40 33 56 44 -0.45 - 70 0 0 33 31 5 10 56 43.2 42 131 -7 33 25 49 33 36 21 33 21 3 33 41 8 -0.45 - 69 0 0 33 15 17 10 56 45.4 42 132 -6 33 10 1 33 20 33 33 5 14 33 25 21 -0.45 - 68 0 0 32 59 18 10 56 47.6 43 133 -5 32 54 1 33 4 34 32 49 14 33 9 22 -0.45 - 67 0 0 32 43 7 10 56 49.8 44 134 -4 32 37 51 32 48 24 32 33 3 32 53 12 -0.45 - 66 0 0 32 26 46 10 56 52.1 45 135 -3 32 21 29 32 32 3 32 16 41 32 36 51 -0.45 - 65 0 0 32 10 13 10 56 54.4 46 136 -2 32 4 56 32 15 30 32 0 8 32 20 19 -0.45 - 64 0 0 31 53 30 10 56 56.8 46 137 -1 31 48 13 31 58 48 31 43 25 32 3 36 -0.45 - 63 0 0 31 36 37 10 56 59.2 47 138 0 31 31 20 31 41 55 31 26 32 31 46 44 -0.45 - 62 0 0 31 19 34 10 57 1.7 48 139 1 31 14 17 31 24 52 31 9 28 31 29 41 -0.45 - 61 0 0 31 2 22 10 57 4.1 49 140 1 30 57 4 31 7 40 30 52 15 31 12 29 -0.45 - 60 0 0 30 45 0 10 57 6.7 50 141 2 30 39 42 30 50 19 30 34 53 30 55 8 -0.45 - 59 0 0 30 27 29 10 57 9.2 50 142 3 30 22 11 30 32 48 30 17 22 30 37 37 -0.45 - 58 0 0 30 9 50 10 57 11.8 51 143 4 30 4 31 30 15 9 29 59 42 30 19 58 -0.45 - 57 0 0 29 52 2 10 57 14.5 52 145 5 29 46 43 29 57 21 29 41 54 30 2 11 -0.45 - 56 0 0 29 34 6 10 57 17.2 53 146 6 29 28 47 29 39 25 29 23 58 29 44 15 -0.45 - 55 0 0 29 16 3 10 57 19.9 53 147 7 29 10 44 29 21 22 29 5 54 29 26 12 -0.46 - 54 0 0 28 57 52 10 57 22.6 54 148 8 28 52 33 29 3 11 28 47 43 29 8 2 -0.46 - 53 0 0 28 39 34 10 57 25.4 55 150 9 28 34 15 28 44 54 28 29 25 28 49 44 -0.46 - 52 0 0 28 21 10 10 57 28.2 56 151 10 28 15 51 28 26 30 28 11 1 28 31 20 -0.46 - 51 0 0 28 2 39 10 57 31.1 56 152 11 27 57 20 28 7 59 27 52 30 28 12 50 -0.46 - 50 0 0 27 44 3 10 57 34.0 57 154 11 27 38 44 27 49 23 27 33 54 27 54 14 -0.46 - 49 0 0 27 25 21 10 57 36.9 58 155 12 27 20 2 27 30 41 27 15 12 27 35 32 -0.46 - 48 0 0 27 6 35 10 57 39.9 58 157 13 27 1 15 27 11 55 26 56 25 27 16 46 -0.46 - 47 0 0 26 47 44 10 57 42.8 59 159 14 26 42 24 26 53 4 26 37 34 26 57 54 -0.46 - 46 0 0 26 28 48 10 57 45.8 59 160 15 26 23 28 26 34 8 26 18 38 26 38 59 -0.46 - 45 0 0 26 9 49 10 57 48.9 60 162 16 26 4 29 26 15 9 25 59 39 26 20 0 -0.46 - 44 0 0 25 50 46 10 57 51.9 61 164 17 25 45 26 25 56 6 25 40 36 26 0 57 -0.46 - 43 0 0 25 31 41 10 57 55.0 61 166 18 25 26 21 25 37 1 25 21 31 25 41 52 -0.46 - 42 0 0 25 12 33 10 57 58.1 62 168 19 25 7 13 25 17 53 25 2 23 25 22 44 -0.46 - 41 0 0 24 53 23 10 58 1.3 62 170 20 24 48 3 24 58 43 24 43 13 25 3 34 -0.46 - 40 0 0 24 34 12 10 58 4.4 63 172 21 24 28 52 24 39 32 24 24 2 24 44 23 -0.46 - 39 0 0 24 14 59 10 58 7.6 63 174 22 24 9 39 24 20 19 24 4 49 24 25 10 -0.46 - 38 0 0 23 55 46 10 58 10.8 63 176 23 23 50 26 24 1 6 23 45 36 24 5 57 -0.46 - 37 0 0 23 36 32 10 58 14.0 64 178 23 23 31 13 23 41 52 23 26 23 23 46 43 -0.46 - 36 0 0 23 17 19 10 58 17.2 64 181 24 23 11 59 23 22 39 23 7 9 23 27 30 -0.46 - 35 0 0 22 58 6 10 58 20.5 64 183 25 22 52 47 23 3 26 22 47 57 23 8 17 -0.46 - 34 0 0 22 38 55 10 58 23.7 65 185 26 22 33 36 22 44 15 22 28 46 22 49 5 -0.46 - 33 0 0 22 19 45 10 58 27.0 65 188 27 22 14 26 22 25 5 22 9 36 22 29 55 -0.46 - 32 0 0 22 0 38 10 58 30.3 65 190 28 21 55 18 22 5 57 21 50 29 22 10 47 -0.46 - 31 0 0 21 41 33 10 58 33.6 65 193 29 21 36 13 21 46 52 21 31 24 21 51 42 -0.46 - 30 0 0 21 22 30 10 58 36.9 65 195 30 21 17 12 21 27 50 21 12 22 21 32 40 -0.46 - 29 0 0 21 3 32 10 58 40.2 65 198 31 20 58 13 21 8 51 20 53 24 21 13 41 -0.46 - 28 0 0 20 44 37 10 58 43.5 65 200 32 20 39 19 20 49 56 20 34 30 20 54 46 -0.46 - 27 0 0 20 25 47 10 58 46.8 65 203 33 20 20 29 20 31 6 20 15 40 20 35 55 -0.46 - 26 0 0 20 7 2 10 58 50.1 65 206 33 20 1 43 20 12 20 19 56 55 20 17 9 -0.46 - 25 0 0 19 48 22 10 58 53.4 65 208 34 19 43 4 19 53 40 19 38 15 19 58 29 -0.46 - 24 0 0 19 29 47 10 58 56.8 65 210 35 19 24 30 19 35 5 19 19 41 19 39 54 -0.46 - 23 0 0 19 11 19 10 59 0.1 65 213 36 19 6 2 19 16 37 19 1 14 19 21 26 -0.46 - 22 0 0 18 52 58 10 59 3.4 64 215 37 18 47 41 18 58 16 18 42 53 19 3 4 -0.46 - 21 0 0 18 34 44 10 59 6.7 64 217 38 18 29 27 18 40 1 18 24 39 18 44 49 -0.46 - 20 0 0 18 16 37 10 59 10.0 64 220 39 18 11 20 18 21 54 18 6 33 18 26 42 -0.46 - 19 0 0 17 58 38 10 59 13.3 63 222 39 17 53 22 18 3 55 17 48 35 18 8 43 -0.46 - 18 0 0 17 40 48 10 59 16.6 63 224 40 17 35 32 17 46 5 17 30 45 17 50 53 -0.46 - 17 0 0 17 23 7 10 59 19.9 62 226 41 17 17 51 17 28 23 17 13 4 17 33 11 -0.46 - 16 0 0 17 5 35 10 59 23.1 62 228 42 17 0 19 17 10 51 16 55 32 17 15 38 -0.46 - 15 0 0 16 48 12 10 59 26.4 61 230 43 16 42 57 16 53 28 16 38 10 16 58 15 -0.46 - 14 0 0 16 31 0 10 59 29.6 61 232 44 16 25 45 16 36 15 16 20 59 16 41 2 -0.46 - 13 0 0 16 13 58 10 59 32.8 60 233 44 16 8 43 16 19 13 16 3 57 16 24 0 -0.46 - 12 0 0 15 57 7 10 59 36.0 59 235 45 15 51 53 16 2 22 15 47 7 16 7 8 -0.46 - 11 0 0 15 40 28 10 59 39.2 59 236 46 15 35 13 15 45 42 15 30 28 15 50 28 -0.46 - 10 0 0 15 23 59 10 59 42.3 58 238 47 15 18 45 15 29 14 15 14 0 15 33 59 -0.46 - 9 0 0 15 7 43 10 59 45.5 57 239 47 15 2 30 15 12 57 14 57 45 15 17 43 -0.46 - 8 0 0 14 51 40 10 59 48.6 57 241 48 14 46 26 14 56 54 14 41 42 15 1 39 -0.46 - 7 0 0 14 35 49 10 59 51.7 56 242 49 14 30 36 14 41 2 14 25 52 14 45 47 -0.46 - 6 0 0 14 20 11 10 59 54.7 55 243 49 14 14 58 14 25 24 14 10 14 14 30 9 -0.46 - 5 0 0 14 4 47 10 59 57.7 54 245 50 13 59 34 14 9 59 13 54 51 14 14 44 -0.46 - 4 0 0 13 49 36 11 0 0.7 54 246 51 13 44 24 13 54 48 13 39 40 13 59 32 -0.46 - 3 0 0 13 34 39 11 0 3.7 53 247 51 13 29 28 13 39 52 13 24 45 13 44 35 -0.46 - 2 0 0 13 19 57 11 0 6.6 52 248 52 13 14 46 13 25 9 13 10 3 13 29 53 -0.46 - 1 0 0 13 5 30 11 0 9.6 51 249 53 13 0 19 13 10 41 12 55 36 13 15 24 -0.47 0 0 0 12 51 17 11 0 12.4 50 250 53 12 46 6 12 56 29 12 41 24 13 1 11 -0.47 1 0 0 12 37 20 11 0 15.3 49 251 54 12 32 10 12 42 31 12 27 28 12 47 14 -0.47 2 0 0 12 23 39 11 0 18.1 49 251 54 12 18 28 12 28 49 12 13 47 12 33 31 -0.47 3 0 0 12 10 13 11 0 20.8 48 252 55 12 5 3 12 15 23 12 0 22 12 20 5 -0.47 4 0 0 11 57 3 11 0 23.5 47 253 55 11 51 54 12 2 13 11 47 13 12 6 55 -0.47 5 0 0 11 44 10 11 0 26.2 46 254 56 11 39 1 11 49 20 11 34 20 11 54 1 -0.47 6 0 0 11 31 34 11 0 28.9 45 254 56 11 26 24 11 36 43 11 21 44 11 41 24 -0.47 7 0 0 11 19 14 11 0 31.5 44 255 56 11 14 5 11 24 23 11 9 25 11 29 4 -0.47 8 0 0 11 7 11 11 0 34.0 43 256 57 11 2 3 11 12 20 10 57 23 11 17 0 -0.47 9 0 0 10 55 26 11 0 36.5 42 256 57 10 50 17 11 0 34 10 45 38 11 5 14 -0.47 10 0 0 10 43 58 11 0 39.0 41 257 57 10 38 50 10 49 6 10 34 11 10 53 46 -0.47 11 0 0 10 32 48 11 0 41.4 41 257 57 10 27 40 10 37 56 10 23 1 10 42 35 -0.47 12 0 0 10 21 56 11 0 43.8 40 258 58 10 16 48 10 27 3 10 12 9 10 31 43 -0.47 13 0 0 10 11 22 11 0 46.1 39 258 58 10 6 15 10 16 29 10 1 36 10 21 8 -0.47 14 0 0 10 1 6 11 0 48.4 38 259 58 9 55 59 10 6 13 9 51 21 10 10 52 -0.47 15 0 0 9 51 9 11 0 50.6 37 259 58 9 46 2 9 56 15 9 41 24 10 0 54 -0.47 16 0 0 9 41 30 11 0 52.8 36 260 58 9 36 24 9 46 37 9 31 46 9 51 15 -0.47 17 0 0 9 32 10 11 0 54.9 35 260 58 9 27 4 9 37 17 9 22 27 9 41 55 -0.47 18 0 0 9 23 9 11 0 57.0 34 260 58 9 18 4 9 28 15 9 13 26 9 32 53 -0.47 19 0 0 9 14 28 11 0 59.0 33 261 58 9 9 22 9 19 34 9 4 45 9 24 11 -0.47 20 0 0 9 6 5 11 1 1.0 32 261 58 9 1 0 9 11 11 8 56 23 9 15 48 -0.47 21 0 0 8 58 2 11 1 2.9 31 261 58 8 52 57 9 3 7 8 48 20 9 7 45 -0.47 22 0 0 8 50 19 11 1 4.8 30 262 58 8 45 14 8 55 24 8 40 37 9 0 1 -0.47 23 0 0 8 42 54 11 1 6.6 29 262 57 8 37 50 8 47 59 8 33 13 8 52 36 -0.47 24 0 0 8 35 50 11 1 8.3 28 262 57 8 30 46 8 40 55 8 26 10 8 45 32 -0.47 25 0 0 8 29 6 11 1 10.0 27 263 57 8 24 1 8 34 10 8 19 25 8 38 47 -0.47 26 0 0 8 22 41 11 1 11.7 26 263 57 8 17 37 8 27 45 8 13 1 8 32 22 -0.47 27 0 0 8 16 37 11 1 13.3 25 263 56 8 11 33 8 21 41 8 6 57 8 26 17 -0.47 28 0 0 8 10 52 11 1 14.8 24 263 56 8 5 48 8 15 56 8 1 13 8 20 32 -0.47 29 0 0 8 5 28 11 1 16.3 23 264 56 8 0 24 8 10 32 7 55 49 8 15 8 -0.47 30 0 0 8 0 24 11 1 17.7 22 264 55 7 55 20 8 5 27 7 50 45 8 10 3 -0.47 31 0 0 7 55 40 11 1 19.0 21 264 55 7 50 37 8 0 44 7 46 2 8 5 19 -0.47 32 0 0 7 51 17 11 1 20.3 20 264 54 7 46 14 7 56 20 7 41 39 8 0 56 -0.47 33 0 0 7 47 14 11 1 21.6 19 264 54 7 42 11 7 52 17 7 37 36 7 56 52 -0.47 34 0 0 7 43 31 11 1 22.8 18 265 53 7 38 28 7 48 34 7 33 54 7 53 10 -0.47 35 0 0 7 40 9 11 1 23.9 17 265 53 7 35 6 7 45 12 7 30 32 7 49 47 -0.47 36 0 0 7 37 8 11 1 24.9 16 265 52 7 32 5 7 42 11 7 27 30 7 46 46 -0.47 37 0 0 7 34 27 11 1 25.9 15 265 52 7 29 24 7 39 30 7 24 50 7 44 5 -0.48 38 0 0 7 32 7 11 1 26.9 14 265 51 7 27 4 7 37 9 7 22 30 7 41 44 -0.48 39 0 0 7 30 7 11 1 27.7 13 265 50 7 25 4 7 35 10 7 20 30 7 39 45 -0.48 40 0 0 7 28 28 11 1 28.5 12 266 50 7 23 25 7 33 30 7 18 51 7 38 5 -0.48 41 0 0 7 27 10 11 1 29.3 11 266 49 7 22 7 7 32 12 7 17 33 7 36 47 -0.48 42 0 0 7 26 12 11 1 30.0 10 266 48 7 21 10 7 31 14 7 16 35 7 35 49 -0.48 43 0 0 7 25 35 11 1 30.6 9 266 48 7 20 33 7 30 37 7 15 58 7 35 12 -0.48 44 0 0 7 25 18 11 1 31.2 8 266 47 7 20 16 7 30 21 7 15 42 7 34 56 -0.49 45 0 0 7 25 22 11 1 31.7 7 266 46 7 20 20 7 30 25 7 15 46 7 35 0 -0.49 46 0 0 7 25 47 11 1 32.1 6 266 46 7 20 45 7 30 50 7 16 11 7 35 25 -0.49 47 0 0 7 26 33 11 1 32.5 5 267 45 7 21 30 7 31 35 7 16 56 7 36 10 -0.50 48 0 0 7 27 39 11 1 32.8 4 267 44 7 22 36 7 32 41 7 18 2 7 37 16 -0.51 49 0 0 7 29 5 11 1 33.1 3 267 43 7 24 3 7 34 8 7 19 28 7 38 42 -0.52 50 0 0 7 30 52 11 1 33.3 3 267 42 7 25 50 7 35 55 7 21 15 7 40 29 -0.54 51 0 0 7 32 59 11 1 33.4 2 267 42 7 27 57 7 38 2 7 23 23 7 42 37 -0.60 52 0 0 7 35 27 11 1 33.4 1 267 41 7 30 25 7 40 30 7 25 50 7 45 5 -0.87 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: HIP 64963 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 18 55.2230 DE: -02 31 54.200 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 18 55.2233 DE: -02 31 54.202 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.1 * B mag [mag]: 9.4 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2161) Grissom asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.70430 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): 0.008", 0.003", 111.383° remarks: * orbital elements for (2161)Grissom : Mean anomaly = 166.3817178508 deg Arg. of pericenter = 248.9259612955 deg Long. of node = 126.3638289210 deg Inclination = 7.3016947129 deg Eccentricity = 0.1625999351 Semimajor axis = 2.7472077318 AU Perihelion dist = 2.3005119329 AU Mag: H = 12.35, G = 0.15 Epoch of elements : MJD 60646.45741317 TDT (2024 Dec 02.4574) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr27,0.50,2024,12,2,10.977911,0.121779,0.399219,18.095207,-5.566353,-0.004240,0.002102,-0.000001,0.000000 -36.4017,-2.6618,12.73,-22.06,False HIP 64963,13.31533969,-2.5317218,9.35,9.14,9.03,0.1,0,,13.33649721,-2.6618404,9.37,9.03,0,0,0 2161,Grissom,18.51,16.875,3.7043,0,0,2.868,-13.22,,1.4,0 0,166.2827,2024,12,2,248.9260,126.3638,7.3017,0.16260,2.74721,2.30051,12.35,5.0,0.15 1.454,0.0083,0.0028,111,0.0028,Known errors,1.00,0,-1,-1 20241202__64963,60140.72 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org