IOTA/IOTA-ES occultation update for (4082) Swann / UCAC4 296-136639 event on 2024 Jun 10, 16:55 UT Visible from Summary ------- On 2024 Jun 10 UT, the 9.94676503782902 km diameter asteroid (4082) Swann will occult a 9.1 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.17 mag to 17.24 mag (the magnitude of the asteroid) for at most 0.880 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: 90 * date and approx. time of event: 2024 Jun 10, 16:48 - 2024 Jun 10, 17:02 * geocentric midpoint of event [JD]: 2460472.20534620 * magnitude of target star: 9.07 * magnitude drop [mag]: 8.17 * estimated maximum duration [s]: 0.880 * Moon: 18 % sunlit, 139° distance * Sun: 168° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.53 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.004", 90°) * approx speed of asteroid's shadow [km/s]: 12.3657 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 296-136639 by 4082 Swann on 2024 Jun 10 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 51 0 0 36 2 52 17 2 42.2 1 130 -12 36 7 37 35 58 7 36 12 40 35 53 6 .... 52 0 0 35 22 33 17 2 41.9 2 131 -14 35 27 18 35 17 49 35 32 19 35 12 49 -0.40 53 0 0 34 42 12 17 2 41.5 3 131 -15 34 46 55 34 37 28 34 51 56 34 32 29 -0.52 54 0 0 34 1 48 17 2 40.8 4 132 -16 34 6 31 33 57 6 34 11 31 33 52 7 -0.58 55 0 0 33 21 25 17 2 39.9 5 132 -17 33 26 7 33 16 43 33 31 6 33 11 46 -0.61 56 0 0 32 41 4 17 2 38.8 6 133 -18 32 45 45 32 36 23 32 50 43 32 31 26 -0.63 57 0 0 32 0 46 17 2 37.4 7 133 -19 32 5 26 31 56 6 32 10 23 31 51 11 -0.65 58 0 0 31 20 34 17 2 35.8 8 134 -20 31 25 13 31 15 55 31 30 8 31 11 1 -0.66 59 0 0 30 40 28 17 2 34.0 9 134 -21 30 45 6 30 35 51 30 50 1 30 30 57 -0.67 60 0 0 30 0 31 17 2 32.0 10 135 -22 30 5 8 29 55 55 30 10 1 29 51 2 -0.67 61 0 0 29 20 44 17 2 29.7 11 136 -23 29 25 20 29 16 9 29 30 12 29 11 18 -0.68 62 0 0 28 41 9 17 2 27.2 13 136 -24 28 45 43 28 36 34 28 50 34 28 31 45 -0.68 63 0 0 28 1 46 17 2 24.5 14 137 -25 28 6 20 27 57 13 28 11 9 27 52 25 -0.69 64 0 0 27 22 38 17 2 21.6 15 137 -26 27 27 10 27 18 6 27 31 59 27 13 19 -0.69 65 0 0 26 43 46 17 2 18.5 16 138 -27 26 48 17 26 39 15 26 53 4 26 34 29 -0.69 66 0 0 26 5 11 17 2 15.1 17 138 -28 26 9 41 26 0 42 26 14 26 25 55 57 -0.70 67 0 0 25 26 55 17 2 11.5 18 139 -30 25 31 23 25 22 26 25 36 7 25 17 43 -0.70 68 0 0 24 48 58 17 2 7.7 19 139 -31 24 53 25 24 44 31 24 58 8 24 39 49 -0.70 69 0 0 24 11 22 17 2 3.7 20 140 -32 24 15 48 24 6 57 24 20 30 24 2 16 -0.70 70 0 0 23 34 9 17 1 59.5 21 140 -33 23 38 34 23 29 44 23 43 14 23 25 5 -0.70 71 0 0 22 57 19 17 1 55.1 22 141 -34 23 1 42 22 52 56 23 6 21 22 48 18 -0.70 72 0 0 22 20 53 17 1 50.5 23 141 -35 22 25 15 22 16 31 22 29 53 22 11 55 -0.70 73 0 0 21 44 53 17 1 45.7 24 142 -36 21 49 13 21 40 32 21 53 50 21 35 57 -0.71 74 0 0 21 9 19 17 1 40.7 25 142 -37 21 13 38 21 4 59 21 18 13 21 0 25 -0.71 75 0 0 20 34 12 17 1 35.5 26 143 -38 20 38 30 20 29 54 20 43 3 20 25 21 -0.71 76 0 0 19 59 33 17 1 30.1 27 143 -39 20 3 50 19 55 16 20 8 22 19 50 45 -0.71 77 0 0 19 25 23 17 1 24.6 28 144 -40 19 29 39 19 21 8 19 34 10 19 16 38 -0.71 78 0 0 18 51 43 17 1 18.9 29 144 -41 18 55 58 18 47 29 19 0 27 18 43 1 -0.71 79 0 0 18 18 34 17 1 13.0 30 145 -42 18 22 47 18 14 21 18 27 15 18 9 54 -0.71 80 0 0 17 45 55 17 1 7.0 31 145 -43 17 50 7 17 41 44 17 54 34 17 37 18 -0.71 81 0 0 17 13 49 17 1 0.8 32 146 -44 17 17 59 17 9 38 17 22 25 17 5 14 -0.71 82 0 0 16 42 14 17 0 54.4 33 147 -45 16 46 24 16 38 5 16 50 48 16 33 42 -0.71 83 0 0 16 11 13 17 0 47.9 34 147 -45 16 15 22 16 7 5 16 19 44 16 2 43 -0.71 84 0 0 15 40 45 17 0 41.3 35 148 -46 15 44 52 15 36 38 15 49 14 15 32 18 -0.71 85 0 0 15 10 51 17 0 34.5 36 148 -47 15 14 57 15 6 46 15 19 18 15 2 26 -0.71 86 0 0 14 41 32 17 0 27.6 37 149 -48 14 45 36 14 37 27 14 49 56 14 33 9 -0.71 87 0 0 14 12 47 17 0 20.5 38 150 -49 14 16 50 14 8 43 14 21 8 14 4 26 -0.71 88 0 0 13 44 37 17 0 13.4 39 150 -50 13 48 40 13 40 35 13 52 56 13 36 19 -0.71 89 0 0 13 17 3 17 0 6.1 39 151 -51 13 21 4 13 13 2 13 25 20 13 8 47 -0.71 90 0 0 12 50 4 16 59 58.7 40 152 -51 12 54 5 12 46 4 12 58 19 12 41 50 -0.71 91 0 0 12 23 42 16 59 51.3 41 153 -52 12 27 42 12 19 43 12 31 55 12 15 30 -0.71 92 0 0 11 57 56 16 59 43.7 42 153 -53 12 1 55 11 53 58 12 6 7 11 49 47 -0.71 93 0 0 11 32 47 16 59 36.0 43 154 -53 11 36 45 11 28 50 11 40 56 11 24 40 -0.71 94 0 0 11 8 15 16 59 28.2 43 155 -54 11 12 11 11 4 19 11 16 21 11 0 9 -0.71 95 0 0 10 44 20 16 59 20.3 44 156 -55 10 48 15 10 40 24 10 52 24 10 36 16 -0.71 96 0 0 10 21 1 16 59 12.4 45 157 -55 10 24 56 10 17 7 10 29 4 10 13 0 -0.71 97 0 0 9 58 21 16 59 4.4 46 158 -56 10 2 14 9 54 27 10 6 21 9 50 21 -0.71 98 0 0 9 36 17 16 58 56.3 46 159 -57 9 40 10 9 32 25 9 44 16 9 28 19 -0.71 99 0 0 9 14 52 16 58 48.1 47 160 -57 9 18 44 9 11 0 9 22 49 9 6 56 -0.71 100 0 0 8 54 4 16 58 39.9 48 161 -58 8 57 55 8 50 13 9 1 59 8 46 9 -0.71 101 0 0 8 33 54 16 58 31.6 48 162 -58 8 37 44 8 30 4 8 41 48 8 26 1 -0.71 102 0 0 8 14 22 16 58 23.3 49 163 -59 8 18 11 8 10 33 8 22 14 8 6 31 -0.71 103 0 0 7 55 28 16 58 14.9 50 164 -59 7 59 16 7 51 39 8 3 18 7 47 38 -0.71 104 0 0 7 37 11 16 58 6.4 50 165 -59 7 40 59 7 33 24 7 45 0 7 29 23 -0.71 105 0 0 7 19 33 16 57 57.9 51 166 -60 7 23 20 7 15 46 7 27 21 7 11 46 -0.71 106 0 0 7 2 33 16 57 49.4 51 167 -60 7 6 20 6 58 47 7 10 19 6 54 48 -0.71 107 0 0 6 46 11 16 57 40.8 52 168 -60 6 49 57 6 42 26 6 53 56 6 38 27 -0.71 108 0 0 6 30 27 16 57 32.2 52 170 -60 6 34 13 6 26 42 6 38 11 6 22 45 -0.71 109 0 0 6 15 22 16 57 23.6 52 171 -61 6 19 6 6 11 37 6 23 4 6 7 40 -0.71 110 0 0 6 0 54 16 57 15.0 53 172 -61 6 4 38 5 57 10 6 8 35 5 53 14 -0.71 111 0 0 5 47 5 16 57 6.3 53 174 -61 5 50 48 5 43 22 5 54 45 5 39 26 -0.71 112 0 0 5 33 54 16 56 57.6 53 175 -61 5 37 37 5 30 11 5 41 32 5 26 16 -0.71 113 0 0 5 21 21 16 56 48.9 54 176 -61 5 25 3 5 17 38 5 28 58 5 13 44 -0.71 114 0 0 5 9 26 16 56 40.2 54 178 -61 5 13 8 5 5 44 5 17 2 5 1 50 -0.71 115 0 0 4 58 9 16 56 31.5 54 179 -61 5 1 50 4 54 28 5 5 45 4 50 34 -0.71 116 0 0 4 47 30 16 56 22.7 54 181 -60 4 51 11 4 43 49 4 55 5 4 39 56 -0.71 117 0 0 4 37 30 16 56 14.0 54 182 -60 4 41 10 4 33 49 4 45 4 4 29 56 -0.71 118 0 0 4 28 7 16 56 5.2 55 183 -60 4 31 47 4 24 27 4 35 40 4 20 34 -0.71 119 0 0 4 19 23 16 55 56.5 55 185 -60 4 23 3 4 15 43 4 26 55 4 11 51 -0.71 120 0 0 4 11 16 16 55 47.8 55 186 -60 4 14 56 4 7 37 4 18 48 4 3 45 -0.71 121 0 0 4 3 48 16 55 39.0 55 188 -59 4 7 27 4 0 9 4 11 19 3 56 17 -0.71 122 0 0 3 56 58 16 55 30.3 55 189 -59 4 0 37 3 53 19 4 4 29 3 49 28 -0.71 123 0 0 3 50 46 16 55 21.6 55 191 -58 3 54 24 3 47 7 3 58 16 3 43 16 -0.71 124 0 0 3 45 11 16 55 13.0 55 192 -58 3 48 50 3 41 33 3 52 41 3 37 42 -0.71 125 0 0 3 40 15 16 55 4.3 54 193 -58 3 43 53 3 36 37 3 47 45 3 32 46 -0.71 126 0 0 3 35 57 16 54 55.6 54 195 -57 3 39 35 3 32 19 3 43 26 3 28 29 -0.71 127 0 0 3 32 17 16 54 47.0 54 196 -57 3 35 55 3 28 39 3 39 46 3 24 49 -0.71 128 0 0 3 29 15 16 54 38.4 54 197 -56 3 32 53 3 25 37 3 36 43 3 21 47 -0.71 129 0 0 3 26 51 16 54 29.9 54 199 -55 3 30 29 3 23 13 3 34 19 3 19 23 -0.71 130 0 0 3 25 5 16 54 21.4 53 200 -55 3 28 42 3 21 27 3 32 33 3 17 37 -0.71 131 0 0 3 23 56 16 54 12.9 53 201 -54 3 27 34 3 20 19 3 31 25 3 16 29 -0.71 132 0 0 3 23 26 16 54 4.4 53 203 -54 3 27 4 3 19 49 3 30 55 3 15 59 -0.71 133 0 0 3 23 34 16 53 56.0 52 204 -53 3 27 12 3 19 57 3 31 3 3 16 7 -0.71 134 0 0 3 24 21 16 53 47.6 52 205 -52 3 27 58 3 20 43 3 31 49 3 16 53 -0.71 135 0 0 3 25 45 16 53 39.3 51 206 -52 3 29 23 3 22 7 3 33 13 3 18 17 -0.71 136 0 0 3 27 47 16 53 31.0 51 207 -51 3 31 25 3 24 10 3 35 16 3 20 19 -0.71 137 0 0 3 30 28 16 53 22.8 50 208 -50 3 34 6 3 26 50 3 37 57 3 23 0 -0.71 138 0 0 3 33 47 16 53 14.6 50 209 -49 3 37 25 3 30 9 3 41 16 3 26 18 -0.71 139 0 0 3 37 44 16 53 6.5 49 210 -49 3 41 22 3 34 6 3 45 13 3 30 15 -0.71 140 0 0 3 42 19 16 52 58.4 49 211 -48 3 45 58 3 38 41 3 49 49 3 34 50 -0.71 141 0 0 3 47 33 16 52 50.4 48 212 -47 3 51 12 3 43 54 3 55 3 3 40 3 -0.71 142 0 0 3 53 25 16 52 42.5 48 213 -46 3 57 4 3 49 46 4 0 56 3 45 54 -0.71 143 0 0 3 59 55 16 52 34.6 47 214 -45 4 3 34 3 56 16 4 7 27 3 52 24 -0.71 144 0 0 4 7 4 16 52 26.8 46 215 -45 4 10 44 4 3 24 4 14 36 3 59 33 -0.71 145 0 0 4 14 51 16 52 19.1 46 216 -44 4 18 31 4 11 12 4 22 24 4 7 19 -0.71 146 0 0 4 23 17 16 52 11.5 45 216 -43 4 26 58 4 19 37 4 30 51 4 15 44 -0.71 147 0 0 4 32 22 16 52 3.9 44 217 -42 4 36 3 4 28 41 4 39 56 4 24 48 -0.71 148 0 0 4 42 5 16 51 56.4 44 218 -41 4 45 46 4 38 24 4 49 41 4 34 31 -0.72 149 0 0 4 52 27 16 51 49.0 43 219 -40 4 56 9 4 48 46 5 0 3 4 44 52 -0.72 150 0 0 5 3 28 16 51 41.7 42 219 -39 5 7 10 4 59 46 5 11 5 4 55 52 -0.72 151 0 0 5 15 8 16 51 34.5 41 220 -39 5 18 50 5 11 25 5 22 46 5 7 30 -0.72 152 0 0 5 27 26 16 51 27.3 41 221 -38 5 31 9 5 23 43 5 35 6 5 19 48 -0.72 153 0 0 5 40 24 16 51 20.3 40 221 -37 5 44 7 5 36 40 5 48 4 5 32 44 -0.72 154 0 0 5 54 0 16 51 13.3 39 222 -36 5 57 44 5 50 16 6 1 42 5 46 19 -0.72 155 0 0 6 8 16 16 51 6.5 38 222 -35 6 12 1 6 4 31 6 15 59 6 0 34 -0.72 156 0 0 6 23 10 16 50 59.8 37 223 -34 6 26 56 6 19 25 6 30 54 6 15 27 -0.72 157 0 0 6 38 44 16 50 53.2 36 223 -33 6 42 30 6 34 58 6 46 30 6 30 59 -0.72 158 0 0 6 54 57 16 50 46.7 36 224 -32 6 58 44 6 51 10 7 2 44 6 47 11 -0.72 159 0 0 7 11 49 16 50 40.3 35 224 -31 7 15 37 7 8 2 7 19 37 7 4 1 -0.72 160 0 0 7 29 20 16 50 34.0 34 225 -30 7 33 9 7 25 32 7 37 10 7 21 31 -0.72 161 0 0 7 47 31 16 50 27.9 33 225 -29 7 51 20 7 43 42 7 55 22 7 39 40 -0.72 162 0 0 8 6 20 16 50 21.9 32 226 -28 8 10 10 8 2 31 8 14 14 7 58 28 -0.72 163 0 0 8 25 49 16 50 16.0 31 226 -27 8 29 40 8 21 59 8 33 44 8 17 55 -0.72 164 0 0 8 45 57 16 50 10.3 30 226 -26 8 49 49 8 42 6 8 53 54 8 38 2 -0.73 165 0 0 9 6 44 16 50 4.7 29 227 -25 9 10 37 9 2 52 9 14 43 8 58 47 -0.73 166 0 0 9 28 11 16 49 59.2 28 227 -24 9 32 4 9 24 17 9 36 11 9 20 11 -0.73 167 0 0 9 50 16 16 49 53.9 27 227 -23 9 54 10 9 46 22 9 58 18 9 42 15 -0.73 168 0 0 10 13 0 16 49 48.8 26 228 -22 10 16 55 10 9 5 10 21 4 10 4 57 -0.73 169 0 0 10 36 23 16 49 43.8 25 228 -21 10 40 19 10 32 27 10 44 29 10 28 18 -0.73 170 0 0 11 0 25 16 49 38.9 24 229 -20 11 4 22 10 56 28 11 8 33 10 52 17 -0.73 171 0 0 11 25 5 16 49 34.3 23 229 -19 11 29 3 11 21 7 11 33 15 11 16 56 -0.73 172 0 0 11 50 24 16 49 29.8 22 229 -18 11 54 23 11 46 25 11 58 36 11 42 12 -0.73 173 0 0 12 16 21 16 49 25.4 21 230 -17 12 20 21 12 12 21 12 24 35 12 8 7 -0.73 174 0 0 12 42 56 16 49 21.3 20 230 -16 12 46 57 12 38 55 12 51 13 12 34 40 -0.73 175 0 0 13 10 9 16 49 17.3 19 230 -15 13 14 11 13 6 6 13 18 28 13 1 50 -0.74 176 0 0 13 37 59 16 49 13.5 18 230 -14 13 42 2 13 33 55 13 46 20 13 29 38 -0.74 177 0 0 14 6 26 16 49 9.9 17 231 -13 14 10 31 14 2 22 14 14 50 13 58 3 -0.74 178 0 0 14 35 31 16 49 6.5 16 231 -12 14 39 37 14 31 25 14 43 57 14 27 5 -0.74 179 0 0 15 5 12 16 49 3.3 15 231 -11 15 9 19 15 1 5 15 13 40 14 56 44 -0.74 180 0 0 15 35 28 16 49 0.3 14 232 -9 15 39 37 15 31 20 15 44 0 15 26 58 -0.74 -179 0 0 16 6 21 16 48 57.5 13 232 -8 16 10 31 16 2 12 16 14 55 15 57 48 -0.74 -178 0 0 16 37 49 16 48 55.0 12 232 -7 16 42 0 16 33 38 16 46 25 16 29 13 -0.74 -177 0 0 17 9 51 16 48 52.6 11 233 -6 17 14 3 17 5 39 17 18 30 17 1 13 -0.75 -176 0 0 17 42 28 16 48 50.4 10 233 -5 17 46 41 17 38 14 17 51 9 17 33 47 -0.75 -175 0 0 18 15 37 16 48 48.5 9 233 -4 18 19 52 18 11 23 18 24 22 18 6 54 -0.75 -174 0 0 18 49 20 16 48 46.8 8 234 -3 18 53 36 18 45 4 18 58 7 18 40 34 -0.76 -173 0 0 19 23 35 16 48 45.3 7 234 -2 19 27 52 19 19 18 19 32 25 19 14 46 -0.76 -172 0 0 19 58 21 16 48 44.0 5 234 -1 20 2 40 19 54 2 20 7 13 19 49 29 -0.77 -171 0 0 20 33 37 16 48 43.0 4 235 0 20 37 57 20 29 17 20 42 33 20 24 43 -0.77 -170 0 0 21 9 23 16 48 42.2 3 235 1 21 13 45 21 5 2 21 18 21 21 0 26 -0.79 -169 0 0 21 45 38 16 48 41.6 2 235 3 21 50 1 21 41 16 21 54 39 21 36 38 -0.82 -168 0 0 22 22 20 16 48 41.3 1 236 4 22 26 45 22 17 57 22 31 24 22 13 18 -0.91 -167 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 22 55 4 .. .. .. 22 50 24 .... Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: UCAC4 296-136639 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 55 30.0712 DE: -30 53 32.972 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 55 30.0712 DE: -30 53 32.972 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 9.1 * B mag [mag]: 10.7 * Diameter [mas]: 0.80 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4082) Swann asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.008 distance from Earth [AU]: 1.66530 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#42 date of fit: 2023 Apr 24 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): 0.014", 0.004", 89.8° remarks: * orbital elements for (4082)Swann : Mean anomaly = 256.4847755489 deg Arg. of pericenter = 100.2270462408 deg Long. of node = 294.3080947900 deg Inclination = 9.5947802316 deg Eccentricity = 0.2574024201 Semimajor axis = 2.3909713778 AU Perihelion dist = 1.7755295587 AU Mag: H = 13.62, G = 0.15 Epoch of elements : MJD 60471.70534662 TDT (2024 Jun 10.7053) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#422023Apr24,0.88,2024,6,10,16.928309,0.084448,0.571343,-6.904556,1.020454,-0.000846,0.000713,0.000001,0.000000 115.8143,-30.8969,-74.02,23.08,False UCAC4 296-136639,17.92501978,-30.8924923,10.72,9.07,8.18,0.8,0,,17.95167416,-30.8969172,8.17,8.61,0,0,0 4082,Swann,17.24,10.913,1.6653,0,0,-2.833,5.39,,0.8,0 0,256.2967,2024,6,10,100.2270,294.3081,9.5948,0.25740,2.39097,1.77553,13.61,5.0,0.15 1.529,0.0137,0.0043,90,0.0048,Known errors,0.57,0,-1,-1 20240610_136639,60139.38 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org