IOTA/IOTA-ES occultation update for (9984) Gregbryant / TYC 6320-00542-1 event on 2024 Oct 26, 14:10 UT Visible from Summary ------- On 2024 Oct 26 UT, the 11.951 km diameter asteroid (9984) Gregbryant will occult a 11.3 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.22 mag to 18.54 mag (the magnitude of the asteroid) for at most 0.540 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: 95 * date and approx. time of event: 2024 Oct 26, 14:07 - 2024 Oct 26, 14:14 * geocentric midpoint of event [JD]: 2460610.09088471 * magnitude of target star: 11.32 * magnitude drop [mag]: 7.22 * estimated maximum duration [s]: 0.540 * Moon: 29 % sunlit, 147° distance * Sun: 82° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.003", 75°) * approx speed of asteroid's shadow [km/s]: 22.2667 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6320-00542-1 by 9984 Gregbryant on 2024 Oct 26 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 27 45 22 14 7 15.7 1 112 49 27 40 47 27 49 57 27 36 48 27 53 56 .... - 28 0 0 27 24 27 14 7 15.9 2 113 49 27 19 52 27 29 1 27 15 55 27 33 0 -0.50 - 27 0 0 27 3 51 14 7 16.1 3 113 49 26 59 17 27 8 25 26 55 20 27 12 23 -0.63 - 26 0 0 26 43 35 14 7 16.4 4 113 50 26 39 2 26 48 9 26 35 5 26 52 6 -0.69 - 25 0 0 26 23 39 14 7 16.9 4 114 50 26 19 7 26 28 12 26 15 11 26 32 9 -0.73 - 24 0 0 26 4 5 14 7 17.4 5 114 50 25 59 33 26 8 37 25 55 37 26 12 33 -0.75 - 23 0 0 25 44 51 14 7 18.0 6 115 50 25 40 20 25 49 23 25 36 25 25 53 18 -0.77 - 22 0 0 25 25 59 14 7 18.8 7 115 50 25 21 29 25 30 30 25 17 34 25 34 26 -0.78 - 21 0 0 25 7 30 14 7 19.6 8 116 50 25 3 0 25 12 0 24 59 6 25 15 55 -0.79 - 20 0 0 24 49 23 14 7 20.6 9 116 49 24 44 54 24 53 53 24 41 0 24 57 47 -0.80 - 19 0 0 24 31 39 14 7 21.7 10 117 49 24 27 10 24 36 9 24 23 18 24 40 2 -0.80 - 18 0 0 24 14 19 14 7 22.8 11 117 49 24 9 51 24 18 48 24 5 59 24 22 41 -0.81 - 17 0 0 23 57 23 14 7 24.1 12 117 49 23 52 55 24 1 51 23 49 4 24 5 44 -0.81 - 16 0 0 23 40 51 14 7 25.5 13 118 49 23 36 24 23 45 19 23 32 33 23 49 11 -0.82 - 15 0 0 23 24 44 14 7 27.0 14 118 49 23 20 18 23 29 11 23 16 27 23 33 3 -0.82 - 14 0 0 23 9 2 14 7 28.5 15 119 48 23 4 36 23 13 29 23 0 46 23 17 20 -0.82 - 13 0 0 22 53 46 14 7 30.2 16 119 48 22 49 20 22 58 11 22 45 30 23 2 2 -0.83 - 12 0 0 22 38 55 14 7 32.0 17 120 48 22 34 30 22 43 20 22 30 40 22 47 10 -0.83 - 11 0 0 22 24 30 14 7 33.9 18 120 47 22 20 6 22 28 55 22 16 17 22 32 45 -0.83 - 10 0 0 22 10 32 14 7 35.9 19 121 47 22 6 8 22 14 56 22 2 19 22 18 46 -0.83 - 9 0 0 21 57 1 14 7 37.9 20 121 46 21 52 37 22 1 25 21 48 49 22 5 13 -0.83 - 8 0 0 21 43 56 14 7 40.1 20 122 46 21 39 33 21 48 20 21 35 45 21 52 8 -0.84 - 7 0 0 21 31 19 14 7 42.4 21 122 46 21 26 56 21 35 42 21 23 9 21 39 30 -0.84 - 6 0 0 21 19 9 14 7 44.7 22 123 45 21 14 47 21 23 32 21 11 0 21 27 20 -0.84 - 5 0 0 21 7 27 14 7 47.2 23 123 45 21 3 5 21 11 49 20 59 19 21 15 37 -0.84 - 4 0 0 20 56 13 14 7 49.7 24 124 44 20 51 52 21 0 35 20 48 6 21 4 22 -0.84 - 3 0 0 20 45 28 14 7 52.4 25 124 43 20 41 7 20 49 49 20 37 21 20 53 36 -0.84 - 2 0 0 20 35 10 14 7 55.1 26 125 43 20 30 50 20 39 31 20 27 4 20 43 18 -0.84 - 1 0 0 20 25 22 14 7 57.9 27 125 42 20 21 1 20 29 42 20 17 16 20 33 29 -0.85 0 0 0 20 16 2 14 8 0.8 28 126 42 20 11 42 20 20 22 20 7 57 20 24 8 -0.85 1 0 0 20 7 11 14 8 3.8 28 126 41 20 2 52 20 11 31 19 59 7 20 15 17 -0.85 2 0 0 19 58 50 14 8 6.8 29 127 40 19 54 31 20 3 10 19 50 46 20 6 55 -0.85 3 0 0 19 50 58 14 8 10.0 30 128 40 19 46 39 19 55 17 19 42 54 19 59 2 -0.85 4 0 0 19 43 35 14 8 13.2 31 128 39 19 39 17 19 47 55 19 35 32 19 51 39 -0.85 5 0 0 19 36 43 14 8 16.5 32 129 38 19 32 24 19 41 2 19 28 40 19 44 46 -0.85 6 0 0 19 30 20 14 8 19.9 33 130 38 19 26 1 19 34 38 19 22 18 19 38 23 -0.85 7 0 0 19 24 27 14 8 23.3 33 130 37 19 20 8 19 28 45 19 16 25 19 32 29 -0.85 8 0 0 19 19 4 14 8 26.9 34 131 36 19 14 46 19 23 22 19 11 2 19 27 6 -0.85 9 0 0 19 14 11 14 8 30.5 35 132 35 19 9 53 19 18 29 19 6 10 19 22 13 -0.85 10 0 0 19 9 48 14 8 34.1 36 132 35 19 5 30 19 14 6 19 1 47 19 17 50 -0.85 11 0 0 19 5 56 14 8 37.9 36 133 34 19 1 38 19 10 14 18 57 55 19 13 57 -0.86 12 0 0 19 2 34 14 8 41.7 37 134 33 18 58 17 19 6 52 18 54 34 19 10 36 -0.86 13 0 0 18 59 43 14 8 45.5 38 135 32 18 55 26 19 4 1 18 51 43 19 7 44 -0.86 14 0 0 18 57 22 14 8 49.5 39 136 31 18 53 5 19 1 40 18 49 22 19 5 23 -0.86 15 0 0 18 55 32 14 8 53.5 39 136 30 18 51 15 18 59 50 18 47 33 19 3 33 -0.86 16 0 0 18 54 13 14 8 57.5 40 137 30 18 49 56 18 58 31 18 46 13 19 2 14 -0.86 17 0 0 18 53 25 14 9 1.6 41 138 29 18 49 7 18 57 42 18 45 25 19 1 25 -0.86 18 0 0 18 53 7 14 9 5.8 41 139 28 18 48 50 18 57 24 18 45 7 19 1 8 -0.86 19 0 0 18 53 20 14 9 10.0 42 140 27 18 49 3 18 57 37 18 45 20 19 1 21 -0.86 20 0 0 18 54 4 14 9 14.3 42 141 26 18 49 46 18 58 21 18 46 4 19 2 5 -0.86 21 0 0 18 55 18 14 9 18.6 43 142 25 18 51 1 18 59 36 18 47 18 19 3 19 -0.86 22 0 0 18 57 4 14 9 23.0 44 143 24 18 52 46 19 1 21 18 49 3 19 5 5 -0.86 23 0 0 18 59 20 14 9 27.4 44 144 23 18 55 2 19 3 38 18 51 20 19 7 21 -0.86 24 0 0 19 2 7 14 9 31.9 45 146 23 18 57 49 19 6 25 18 54 6 19 10 9 -0.86 25 0 0 19 5 25 14 9 36.4 45 147 22 19 1 7 19 9 43 18 57 24 19 13 27 -0.86 26 0 0 19 9 13 14 9 40.9 46 148 21 19 4 55 19 13 31 19 1 12 19 17 15 -0.86 27 0 0 19 13 32 14 9 45.5 46 149 20 19 9 14 19 17 51 19 5 31 19 21 35 -0.86 28 0 0 19 18 22 14 9 50.1 46 150 19 19 14 4 19 22 41 19 10 20 19 26 25 -0.86 29 0 0 19 23 43 14 9 54.7 47 152 18 19 19 24 19 28 2 19 15 41 19 31 46 -0.86 30 0 0 19 29 34 14 9 59.4 47 153 17 19 25 15 19 33 53 19 21 31 19 37 37 -0.86 31 0 0 19 35 55 14 10 4.1 48 154 16 19 31 36 19 40 14 19 27 52 19 43 59 -0.86 32 0 0 19 42 47 14 10 8.8 48 156 15 19 38 28 19 47 6 19 34 43 19 50 51 -0.86 33 0 0 19 50 9 14 10 13.6 48 157 14 19 45 49 19 54 29 19 42 5 19 58 14 -0.86 34 0 0 19 58 1 14 10 18.4 48 158 13 19 53 41 20 2 21 19 49 56 20 6 7 -0.86 35 0 0 20 6 23 14 10 23.1 49 160 12 20 2 3 20 10 43 19 58 18 20 14 29 -0.86 36 0 0 20 15 15 14 10 28.0 49 161 11 20 10 54 20 19 36 20 7 9 20 23 22 -0.86 37 0 0 20 24 37 14 10 32.8 49 163 10 20 20 16 20 28 58 20 16 30 20 32 44 -0.86 38 0 0 20 34 28 14 10 37.6 49 164 9 20 30 7 20 38 49 20 26 20 20 42 36 -0.86 39 0 0 20 44 49 14 10 42.5 49 166 8 20 40 27 20 49 11 20 36 40 20 52 58 -0.86 40 0 0 20 55 39 14 10 47.3 49 167 8 20 51 16 21 0 1 20 47 30 21 3 49 -0.86 41 0 0 21 6 57 14 10 52.2 49 169 7 21 2 35 21 11 20 20 58 48 21 15 8 -0.87 42 0 0 21 18 45 14 10 57.0 49 170 6 21 14 22 21 23 9 21 10 35 21 26 57 -0.87 43 0 0 21 31 2 14 11 1.9 49 172 5 21 26 38 21 35 26 21 22 50 21 39 14 -0.87 44 0 0 21 43 47 14 11 6.7 49 173 4 21 39 23 21 48 11 21 35 34 21 52 0 -0.87 45 0 0 21 57 0 14 11 11.6 49 175 3 21 52 36 22 1 25 21 48 47 22 5 14 -0.87 46 0 0 22 10 41 14 11 16.4 49 176 2 22 6 16 22 15 6 22 2 27 22 18 56 -0.87 47 0 0 22 24 50 14 11 21.2 49 178 1 22 20 24 22 29 15 22 16 35 22 33 6 -0.87 48 0 0 22 39 26 14 11 26.0 48 179 0 22 35 0 22 43 52 22 31 10 22 47 43 -0.87 49 0 0 22 54 29 14 11 30.8 48 180 -1 22 50 2 22 58 56 22 46 12 23 2 47 -0.87 50 0 0 23 9 59 14 11 35.6 48 182 -2 23 5 32 23 14 26 23 1 40 23 18 18 -0.87 51 0 0 23 25 55 14 11 40.4 47 183 -3 23 21 27 23 30 23 23 17 35 23 34 15 -0.87 52 0 0 23 42 17 14 11 45.1 47 185 -4 23 37 49 23 46 46 23 33 57 23 50 38 -0.87 53 0 0 23 59 5 14 11 49.8 47 186 -5 23 54 36 24 3 34 23 50 43 24 7 27 -0.87 54 0 0 24 16 18 14 11 54.5 46 187 -6 24 11 49 24 20 48 24 7 55 24 24 42 -0.87 55 0 0 24 33 56 14 11 59.1 46 189 -7 24 29 26 24 38 26 24 25 32 24 42 21 -0.87 56 0 0 24 51 59 14 12 3.8 46 190 -8 24 47 28 24 56 30 24 43 34 25 0 25 -0.87 57 0 0 25 10 25 14 12 8.3 45 191 -9 25 5 54 25 14 57 25 1 59 25 18 52 -0.87 58 0 0 25 29 15 14 12 12.9 45 193 -10 25 24 44 25 33 48 25 20 48 25 37 44 -0.87 59 0 0 25 48 29 14 12 17.3 44 194 -11 25 43 56 25 53 2 25 40 0 25 56 59 -0.86 60 0 0 26 8 5 14 12 21.8 43 195 -12 26 3 32 26 12 39 25 59 35 26 16 36 -0.86 61 0 0 26 28 3 14 12 26.2 43 196 -13 26 23 30 26 32 38 26 19 32 26 36 36 -0.86 62 0 0 26 48 24 14 12 30.5 42 197 -14 26 43 49 26 52 58 26 39 51 26 56 57 -0.86 63 0 0 27 9 5 14 12 34.8 42 199 -15 27 4 30 27 13 40 27 0 31 27 17 39 -0.86 64 0 0 27 30 7 14 12 39.1 41 200 -16 27 25 31 27 34 43 27 21 32 27 38 42 -0.86 65 0 0 27 51 28 14 12 43.3 40 201 -17 27 46 52 27 56 5 27 42 52 28 0 5 -0.86 66 0 0 28 13 10 14 12 47.4 40 202 -17 28 8 32 28 17 47 28 4 32 28 21 48 -0.86 67 0 0 28 35 10 14 12 51.4 39 203 -18 28 30 32 28 39 48 28 26 31 28 43 49 -0.86 68 0 0 28 57 28 14 12 55.4 38 204 -19 28 52 50 29 2 7 28 48 49 29 6 9 -0.86 69 0 0 29 20 4 14 12 59.4 38 205 -20 29 15 25 29 24 44 29 11 23 29 28 46 -0.86 70 0 0 29 42 57 14 13 3.2 37 206 -21 29 38 17 29 47 37 29 34 15 29 51 41 -0.86 71 0 0 30 6 7 14 13 7.0 36 207 -22 30 1 26 30 10 48 29 57 23 30 14 51 -0.86 72 0 0 30 29 31 14 13 10.7 36 208 -23 30 24 50 30 34 13 30 20 47 30 38 17 -0.86 73 0 0 30 53 11 14 13 14.4 35 209 -24 30 48 29 30 57 53 30 44 25 31 1 58 -0.86 74 0 0 31 17 5 14 13 17.9 34 210 -25 31 12 22 31 21 48 31 8 18 31 25 53 -0.86 75 0 0 31 41 12 14 13 21.4 33 211 -26 31 36 29 31 45 56 31 32 24 31 50 2 -0.86 76 0 0 32 5 32 14 13 24.8 32 211 -26 32 0 48 32 10 16 31 56 43 32 14 23 -0.86 77 0 0 32 30 4 14 13 28.2 32 212 -27 32 25 19 32 34 49 32 21 13 32 38 56 -0.86 78 0 0 32 54 47 14 13 31.4 31 213 -28 32 50 2 32 59 32 32 45 55 33 3 40 -0.86 79 0 0 33 19 41 14 13 34.6 30 214 -29 33 14 55 33 24 27 33 10 48 33 28 35 -0.86 80 0 0 33 44 45 14 13 37.6 29 215 -30 33 39 59 33 49 32 33 35 51 33 53 40 -0.86 81 0 0 34 9 57 14 13 40.6 28 216 -31 34 5 11 34 14 45 34 1 2 34 18 54 -0.86 82 0 0 34 35 18 14 13 43.5 28 216 -31 34 30 31 34 40 6 34 26 22 34 44 16 -0.86 83 0 0 35 0 46 14 13 46.3 27 217 -32 34 55 58 35 5 35 34 51 49 35 9 45 -0.86 84 0 0 35 26 21 14 13 49.0 26 218 -33 35 21 33 35 31 10 35 17 23 35 35 21 -0.86 85 0 0 35 52 2 14 13 51.6 25 219 -34 35 47 13 35 56 51 35 43 2 36 1 2 -0.86 86 0 0 36 17 47 14 13 54.2 24 220 -34 36 12 58 36 22 37 36 8 47 36 26 49 -0.86 87 0 0 36 43 37 14 13 56.6 23 220 -35 36 38 47 36 48 27 36 34 36 36 52 39 -0.86 88 0 0 37 9 30 14 13 59.0 22 221 -36 37 4 39 37 14 20 37 0 28 37 18 33 -0.86 89 0 0 37 35 25 14 14 1.2 22 222 -36 37 30 34 37 40 16 37 26 22 37 44 29 -0.86 90 0 0 38 1 22 14 14 3.4 21 223 -37 37 56 31 38 6 14 37 52 19 38 10 27 -0.86 91 0 0 38 27 20 14 14 5.4 20 223 -38 38 22 29 38 32 12 38 18 16 38 36 26 -0.87 92 0 0 38 53 19 14 14 7.4 19 224 -38 38 48 26 38 58 11 38 44 14 39 2 25 -0.87 93 0 0 39 19 16 14 14 9.3 18 225 -39 39 14 23 39 24 9 39 10 10 39 28 23 -0.87 94 0 0 39 45 12 14 14 11.1 17 225 -40 39 40 19 39 50 5 39 36 6 39 54 20 -0.87 95 0 0 40 11 6 14 14 12.8 16 226 -40 40 6 13 40 15 59 40 1 59 40 20 14 -0.87 96 0 0 40 36 56 14 14 14.3 16 227 -41 40 32 3 40 41 50 40 27 49 40 46 5 -0.87 97 0 0 41 2 43 14 14 15.9 15 228 -41 40 57 49 41 7 37 40 53 35 41 11 52 -0.87 98 0 0 41 28 25 14 14 17.3 14 228 -42 41 23 32 41 33 20 41 19 17 41 37 35 -0.87 99 0 0 41 54 2 14 14 18.6 13 229 -42 41 49 8 41 58 57 41 44 54 42 3 12 -0.87 100 0 0 42 19 34 14 14 19.8 12 230 -43 42 14 39 42 24 28 42 10 25 42 28 44 -0.87 101 0 0 42 44 58 14 14 21.0 11 230 -43 42 40 3 42 49 53 42 35 49 42 54 8 -0.87 102 0 0 43 10 15 14 14 22.0 11 231 -44 43 5 20 43 15 10 43 1 5 43 19 26 -0.87 103 0 0 43 35 24 14 14 23.0 10 232 -44 43 30 29 43 40 19 43 26 14 43 44 35 -0.87 104 0 0 44 0 24 14 14 23.9 9 233 -45 43 55 29 44 5 19 43 51 14 44 9 35 -0.87 105 0 0 44 25 15 14 14 24.7 8 233 -45 44 20 20 44 30 10 44 16 5 44 34 26 -0.88 106 0 0 44 49 55 14 14 25.4 7 234 -45 44 45 1 44 54 51 44 40 46 44 59 7 -0.88 107 0 0 45 14 26 14 14 26.0 6 235 -46 45 9 31 45 19 21 45 5 16 45 23 37 -0.88 108 0 0 45 38 45 14 14 26.6 6 235 -46 45 33 50 45 43 40 45 29 35 45 47 56 -0.88 109 0 0 46 2 52 14 14 27.1 5 236 -46 45 57 58 46 7 47 45 53 43 46 12 3 -0.89 110 0 0 46 26 47 14 14 27.5 4 237 -47 46 21 53 46 31 42 46 17 38 46 35 58 -0.89 111 0 0 46 50 29 14 14 27.8 3 238 -47 46 45 35 46 55 24 46 41 20 46 59 40 -0.90 112 0 0 47 13 58 14 14 28.0 2 238 -47 47 9 4 47 18 53 47 4 50 47 23 8 -0.91 113 0 0 47 37 13 14 14 28.2 2 239 -47 47 32 20 47 42 8 47 28 5 47 46 23 -0.94 114 0 0 48 0 15 14 14 28.3 1 240 -48 47 55 21 48 5 9 47 51 7 48 9 24 -1.01 115 0 0 48 23 1 14 14 28.3 0 241 -48 48 18 7 48 27 55 48 13 53 48 32 10 -2.35 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 6320-00542-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 46 37.9436 DE: -19 10 31.618 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 46 37.9434 DE: -19 10 31.619 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.3 * B mag [mag]: 11.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (9984) Gregbryant asteroid class: approx. diameter [km]: 12 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.44420 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#45 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): 0.011", 0.003", 75.436° remarks: * orbital elements for (9984)Gregbryant : Mean anomaly = 94.7058022476 deg Arg. of pericenter = 290.5190055792 deg Long. of node = 287.9708459698 deg Inclination = 3.8147674268 deg Eccentricity = 0.0449576231 Semimajor axis = 2.4893699860 AU Perihelion dist = 2.3774538283 AU Mag: H = 13.51, G = 0.15 Epoch of elements : MJD 60609.59088442 TDT (2024 Oct 26.5909) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#452023Apr25,0.54,2024,10,26,14.181233,-0.126617,0.641201,12.327438,2.446893,0.005577,0.001051,0.000000,0.000000 48.8561,-19.1155,-36.74,-12.74,False TYC 6320-00542-1,19.77720660,-19.1754493,11.64,11.32,11.15,0.0,0,,19.80117258,-19.1154809,7.22,6.95,0,0,0 9984,Gregbryant,18.54,11.951,2.4442,0,0,3.130,8.80,,1.6,0 0,94.5575,2024,10,26,290.5190,287.9708,3.8148,0.04496,2.48937,2.37745,13.51,5.0,0.15 1.433,0.0113,0.0029,75,0.0029,Known errors,1.00,0,-1,-1 20241026_0542-1,60140.66 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org