IOTA/IOTA-ES occultation update for (132) Aethra / UCAC4-562-018577 event on 2019 Dec 06, 14:48 UT Visible from E Australia, Hawaii Summary ------- On 2019 Dec 06 UT, the 46.3 km diameter asteroid (132) Aethra will occult a 12.0 mag star in the constellation Taurus for observers along a path across E Australia, Hawaii. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.47 mag to 11.37 mag (the magnitude of the asteroid) for at most 3.5 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, 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: 74 * date and approx. time of event: 2019 Dec 06, 14:41 - 2019 Dec 06, 14:55 * geocentric midpoint of event [JD]: 2458824.11688333 * magnitude of target star: 12.03 * magnitude drop [mag]: 0.47 * estimated maximum duration [s]: 3.5 * Moon: 72 % sunlit, 75° distance * Sun: 169° distance * rough path description: E Australia, Hawaii Additional comments ------------------- RUWE high, duplicated source flag The occultation path -------------------- * approximate projected width [km]: 54 * 1 sigma uncertainty interval [path widths]: +/- 0.61 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.037, +/- 0.020) * 1 sigma uncertainty ellipse (major, minor, PA): (0.040", 0.014", 113°) * approx speed of asteroid's shadow [km/s]: 13.0839 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-562-018577 by 132 Aethra on 2019 Dec 6 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 ' " Longitude Longitude Longitude Longitude 119 7 0 -65 0 0 14 55 17.7 0 25 -2 118 29 8 119 44 49 117 42 38 120 31 6 .... 120 10 17 -64 0 0 14 55 17.6 1 24 -3 119 33 51 120 46 41 118 49 8 121 31 13 0.26 121 10 36 -63 0 0 14 55 17.2 3 23 -4 120 35 29 121 45 42 119 52 23 122 28 39 0.41 122 8 19 -62 0 0 14 55 16.7 4 22 -5 121 34 24 122 42 13 120 52 47 123 23 43 0.47 123 3 44 -61 0 0 14 55 15.9 5 21 -6 122 30 54 123 36 32 121 50 39 124 16 42 0.50 123 57 6 -60 0 0 14 55 14.9 6 20 -7 123 25 18 124 28 54 122 46 18 125 7 50 0.52 124 48 40 -59 0 0 14 55 13.8 7 19 -8 124 17 48 125 19 31 123 39 58 125 57 20 0.53 125 38 37 -58 0 0 14 55 12.4 8 19 -9 125 8 37 126 8 37 124 31 51 126 45 22 0.55 126 27 8 -57 0 0 14 55 10.8 9 18 -10 125 57 57 126 56 20 125 22 11 127 32 6 0.55 127 14 23 -56 0 0 14 55 9.1 10 17 -11 126 45 56 127 42 49 126 11 5 128 17 41 0.56 128 0 28 -55 0 0 14 55 7.1 11 17 -12 127 32 44 128 28 13 126 58 44 129 2 14 0.56 128 45 33 -54 0 0 14 55 4.9 12 16 -14 128 18 27 129 12 38 127 45 16 129 45 51 0.57 129 29 42 -53 0 0 14 55 2.5 13 15 -15 129 3 13 129 56 11 128 30 47 130 28 40 0.57 130 13 3 -52 0 0 14 55 0.0 15 15 -16 129 47 8 130 38 58 129 15 24 131 10 45 0.58 130 55 40 -51 0 0 14 54 57.2 16 14 -17 130 30 17 131 21 3 129 59 12 131 52 11 0.58 131 37 38 -50 0 0 14 54 54.2 17 14 -18 131 12 45 132 2 31 130 42 18 132 33 3 0.58 132 19 2 -49 0 0 14 54 51.1 18 13 -19 131 54 37 132 43 27 131 24 44 133 13 24 0.58 132 59 55 -48 0 0 14 54 47.7 19 13 -20 132 35 57 133 23 54 132 6 37 133 53 19 0.58 133 40 22 -47 0 0 14 54 44.2 20 12 -21 133 16 49 134 3 56 132 47 59 134 32 51 0.59 134 20 25 -46 0 0 14 54 40.4 21 11 -22 133 57 16 134 43 36 133 28 54 135 12 3 0.59 135 0 9 -45 0 0 14 54 36.5 22 11 -23 134 37 21 135 22 58 134 9 26 135 50 58 0.59 135 39 35 -44 0 0 14 54 32.3 23 10 -24 135 17 8 136 2 3 134 49 39 136 29 38 0.59 136 18 47 -43 0 0 14 54 28.0 24 10 -25 135 56 39 136 40 56 135 29 33 137 8 7 0.59 136 57 46 -42 0 0 14 54 23.5 25 9 -26 136 35 57 137 19 37 136 9 14 137 46 26 0.59 137 36 36 -41 0 0 14 54 18.8 26 9 -27 137 15 4 137 58 10 136 48 42 138 24 38 0.59 138 15 19 -40 0 0 14 54 13.9 27 8 -28 137 54 3 138 36 37 137 28 1 139 2 46 0.59 138 53 57 -39 0 0 14 54 8.8 28 7 -28 138 32 56 139 15 0 138 7 12 139 40 50 0.59 139 32 32 -38 0 0 14 54 3.5 29 7 -29 139 11 45 139 53 21 138 46 18 140 18 54 0.59 140 11 6 -37 0 0 14 53 58.1 30 6 -30 139 50 32 140 31 42 139 25 22 140 56 59 0.60 140 49 41 -36 0 0 14 53 52.4 32 6 -31 140 29 19 141 10 4 140 4 24 141 35 6 0.60 141 28 18 -35 0 0 14 53 46.6 33 5 -32 141 8 8 141 48 31 140 43 27 142 13 18 0.60 142 7 1 -34 0 0 14 53 40.6 34 4 -33 141 47 1 142 27 2 141 22 33 142 51 37 0.60 142 45 49 -33 0 0 14 53 34.4 35 4 -34 142 25 59 143 5 40 142 1 44 143 30 3 0.60 143 24 45 -32 0 0 14 53 28.0 36 3 -35 143 5 5 143 44 28 142 41 1 144 8 39 0.60 144 3 51 -31 0 0 14 53 21.5 37 2 -36 143 44 19 144 23 25 143 20 26 144 47 27 0.60 144 43 9 -30 0 0 14 53 14.7 38 2 -37 144 23 44 145 2 35 144 0 1 145 26 27 0.60 145 22 39 -29 0 0 14 53 7.8 39 1 -38 145 3 22 145 41 58 144 39 47 146 5 42 0.60 146 2 24 -28 0 0 14 53 0.7 40 0 -38 145 43 13 146 21 37 145 19 46 146 45 13 0.60 146 42 25 -27 0 0 14 52 53.4 41 360 -39 146 23 20 147 1 32 146 0 0 147 25 1 0.60 147 22 45 -26 0 0 14 52 46.0 42 359 -40 147 3 45 147 41 47 146 40 31 148 5 9 0.60 148 3 23 -25 0 0 14 52 38.3 43 358 -41 147 44 28 148 22 21 147 21 20 148 45 38 0.60 148 44 24 -24 0 0 14 52 30.5 44 357 -42 148 25 32 149 3 17 148 2 29 149 26 30 0.60 149 25 47 -23 0 0 14 52 22.6 45 356 -42 149 6 59 149 44 38 148 44 0 150 7 46 0.60 150 7 35 -22 0 0 14 52 14.4 46 355 -43 149 48 50 150 26 23 149 25 54 150 49 29 0.60 150 49 50 -21 0 0 14 52 6.1 46 354 -44 150 31 6 151 8 36 150 8 13 151 31 40 0.60 151 32 33 -20 0 0 14 51 57.6 47 353 -45 151 13 51 151 51 18 150 50 59 152 14 20 0.60 152 15 47 -19 0 0 14 51 48.9 48 352 -45 151 57 5 152 34 31 151 34 15 152 57 32 0.60 152 59 33 -18 0 0 14 51 40.1 49 351 -46 152 40 52 153 18 17 152 18 1 153 41 19 0.59 153 43 54 -17 0 0 14 51 31.1 50 350 -46 153 25 12 154 2 39 153 2 21 154 25 41 0.59 154 28 51 -16 0 0 14 51 21.9 51 349 -47 154 10 8 154 47 37 153 47 16 155 10 41 0.59 155 14 28 -15 0 0 14 51 12.6 52 347 -48 154 55 43 155 33 16 154 32 48 155 56 22 0.59 156 0 45 -14 0 0 14 51 3.1 53 346 -48 155 41 58 156 19 36 155 19 0 156 42 46 0.59 156 47 47 -13 0 0 14 50 53.4 53 344 -49 156 28 56 157 6 41 156 5 55 157 29 56 0.59 157 35 35 -12 0 0 14 50 43.6 54 343 -49 157 16 40 157 54 33 156 53 34 158 17 53 0.59 158 24 13 -11 0 0 14 50 33.6 55 341 -50 158 5 13 158 43 16 157 42 1 159 6 42 0.59 159 13 43 -10 0 0 14 50 23.4 55 340 -50 158 54 37 159 32 52 158 31 19 159 56 25 0.59 160 4 8 - 9 0 0 14 50 13.1 56 338 -50 159 44 57 160 23 24 159 21 30 160 47 5 0.59 160 55 33 - 8 0 0 14 50 2.6 57 336 -50 160 36 14 161 14 56 160 12 39 161 38 47 0.59 161 48 0 - 7 0 0 14 49 51.9 57 334 -51 161 28 33 162 7 32 161 4 48 162 31 33 0.59 162 41 34 - 6 0 0 14 49 41.1 58 332 -51 162 21 57 163 1 15 161 58 1 163 25 28 0.59 163 36 19 - 5 0 0 14 49 30.1 58 330 -51 163 16 32 163 56 10 162 52 23 164 20 37 0.59 164 32 19 - 4 0 0 14 49 18.9 59 328 -51 164 12 21 164 52 22 163 47 59 165 17 4 0.59 165 29 40 - 3 0 0 14 49 7.6 59 326 -51 165 9 29 165 49 57 164 44 52 166 14 55 0.59 166 28 28 - 2 0 0 14 48 56.1 59 324 -51 166 8 2 166 48 58 165 43 8 167 14 14 0.59 167 28 47 - 1 0 0 14 48 44.4 59 321 -51 167 8 6 167 49 34 166 42 54 168 15 10 0.59 168 30 46 0 0 0 14 48 32.5 60 319 -51 168 9 48 168 51 50 167 44 15 169 17 48 0.59 169 34 31 1 0 0 14 48 20.4 60 316 -51 169 13 14 169 55 55 168 47 18 170 22 17 0.59 Latitude Latitude Latitude Latitude 170 0 0 1 23 30 14 48 15.7 60 315 -51 1 43 8 1 3 46 2 7 5 0 39 28 0.59 171 0 0 2 17 45 14 48 4.5 60 313 -50 2 37 9 1 58 16 3 0 48 1 34 16 0.58 172 0 0 3 10 30 14 47 53.5 59 311 -50 3 29 40 2 51 16 3 53 2 2 27 34 0.58 173 0 0 4 1 47 14 47 42.7 59 309 -50 4 20 43 3 42 46 4 43 49 3 19 21 0.58 174 0 0 4 51 35 14 47 32.0 59 307 -49 5 10 18 4 32 48 5 33 8 4 9 40 0.58 175 0 0 5 39 58 14 47 21.5 59 305 -49 5 58 28 5 21 23 6 21 3 4 58 31 0.58 176 0 0 6 26 55 14 47 11.2 58 303 -48 6 45 13 6 8 33 7 7 33 5 45 56 0.58 177 0 0 7 12 29 14 47 1.0 58 302 -48 7 30 35 6 54 18 7 52 40 6 31 56 0.58 178 0 0 7 56 39 14 46 51.0 58 300 -47 8 14 34 7 38 40 8 36 26 7 16 33 0.58 179 0 0 8 39 29 14 46 41.2 57 298 -47 8 57 13 8 21 41 9 18 51 7 59 47 0.58 180 0 0 9 20 58 14 46 31.5 57 297 -46 9 38 32 9 3 21 9 59 57 8 41 41 0.58 -179 0 0 10 1 9 14 46 22.0 56 296 -45 10 18 32 9 43 42 10 39 45 9 22 14 0.58 -178 0 0 10 40 2 14 46 12.7 55 294 -45 10 57 16 10 22 45 11 18 17 10 1 30 0.58 -177 0 0 11 17 39 14 46 3.6 55 293 -44 11 34 43 11 0 32 11 55 33 10 39 28 0.58 -176 0 0 11 54 1 14 45 54.6 54 292 -43 12 10 56 11 37 3 12 31 35 11 16 11 0.58 -175 0 0 12 29 9 14 45 45.8 53 291 -43 12 45 55 12 12 20 13 6 24 11 51 39 0.58 -174 0 0 13 3 5 14 45 37.2 53 290 -42 13 19 43 12 46 24 13 40 1 12 25 53 0.58 -173 0 0 13 35 49 14 45 28.7 52 289 -41 13 52 19 13 19 16 14 12 27 12 58 56 0.58 -172 0 0 14 7 23 14 45 20.4 51 288 -41 14 23 45 13 50 58 14 43 44 13 30 47 0.58 -171 0 0 14 37 48 14 45 12.2 51 288 -40 14 54 2 14 21 30 15 13 52 14 1 29 0.58 -170 0 0 15 7 5 14 45 4.2 50 287 -39 15 23 12 14 50 54 15 42 53 14 31 1 0.58 -169 0 0 15 35 14 14 44 56.4 49 287 -38 15 51 15 15 19 11 16 10 48 14 59 27 0.58 -168 0 0 16 2 18 14 44 48.8 48 286 -37 16 18 12 15 46 21 16 37 37 15 26 45 0.58 -167 0 0 16 28 17 14 44 41.2 48 286 -37 16 44 4 16 12 26 17 3 22 15 52 58 0.58 -166 0 0 16 53 11 14 44 33.9 47 285 -36 17 8 53 16 37 27 17 28 3 16 18 6 0.58 -165 0 0 17 17 3 14 44 26.7 46 285 -35 17 32 39 17 1 24 17 51 42 16 42 11 0.58 -164 0 0 17 39 52 14 44 19.6 45 284 -34 17 55 23 17 24 19 18 14 20 17 5 12 0.58 -163 0 0 18 1 40 14 44 12.7 44 284 -34 18 17 6 17 46 13 18 35 56 17 27 12 0.58 -162 0 0 18 22 28 14 44 6.0 44 284 -33 18 37 48 18 7 5 18 56 33 17 48 11 0.58 -161 0 0 18 42 16 14 43 59.4 43 284 -32 18 57 31 18 26 58 19 16 10 18 8 9 0.58 -160 0 0 19 1 5 14 43 52.9 42 284 -31 19 16 16 18 45 51 19 34 49 18 27 8 0.58 -159 0 0 19 18 55 14 43 46.6 41 283 -30 19 34 2 19 3 46 19 52 30 18 45 8 0.58 -158 0 0 19 35 48 14 43 40.4 40 283 -30 19 50 51 19 20 42 20 9 14 19 2 10 0.58 -157 0 0 19 51 44 14 43 34.4 39 283 -29 20 6 43 19 36 42 20 25 2 19 18 14 0.59 -156 0 0 20 6 43 14 43 28.5 39 283 -28 20 21 39 19 51 45 20 39 54 19 33 21 0.59 -155 0 0 20 20 47 14 43 22.7 38 283 -27 20 35 39 20 5 52 20 53 50 19 47 32 0.59 -154 0 0 20 33 55 14 43 17.1 37 283 -26 20 48 45 20 19 4 21 6 52 20 0 48 0.59 -153 0 0 20 46 9 14 43 11.6 36 283 -25 21 0 56 20 31 20 21 18 59 20 13 7 0.59 -152 0 0 20 57 28 14 43 6.2 35 283 -25 21 12 12 20 42 42 21 30 13 20 24 33 0.59 -151 0 0 21 7 53 14 43 1.0 34 283 -24 21 22 35 20 53 10 21 40 33 20 35 3 0.59 -150 0 0 21 17 25 14 42 55.9 34 283 -23 21 32 5 21 2 43 21 50 0 20 44 40 0.59 -149 0 0 21 26 4 14 42 50.9 33 284 -22 21 40 41 21 11 24 21 58 34 20 53 23 0.59 -148 0 0 21 33 49 14 42 46.1 32 284 -21 21 48 25 21 19 11 22 6 16 21 1 12 0.59 -147 0 0 21 40 42 14 42 41.3 31 284 -20 21 55 17 21 26 6 22 13 5 21 8 8 0.59 -146 0 0 21 46 43 14 42 36.8 30 284 -20 22 1 16 21 32 7 22 19 3 21 14 12 0.59 -145 0 0 21 51 51 14 42 32.3 29 284 -19 22 6 23 21 37 17 22 24 9 21 19 22 0.59 -144 0 0 21 56 7 14 42 27.9 28 284 -18 22 10 38 21 41 34 22 28 23 21 23 40 0.59 -143 0 0 21 59 31 14 42 23.7 28 285 -17 22 14 2 21 44 58 22 31 46 21 27 6 0.59 -142 0 0 22 2 3 14 42 19.6 27 285 -16 22 16 34 21 47 31 22 34 17 21 29 39 0.59 -141 0 0 22 3 44 14 42 15.6 26 285 -15 22 18 14 21 49 12 22 35 57 21 31 20 0.59 -140 0 0 22 4 32 14 42 11.8 25 285 -14 22 19 2 21 50 0 22 36 45 21 32 8 0.60 -139 0 0 22 4 29 14 42 8.0 24 286 -14 22 18 59 21 49 56 22 36 42 21 32 4 0.60 -138 0 0 22 3 33 14 42 4.4 23 286 -13 22 18 4 21 49 0 22 35 48 21 31 8 0.60 -137 0 0 22 1 45 14 42 0.9 22 286 -12 22 16 17 21 47 12 22 34 1 21 29 19 0.60 -136 0 0 21 59 5 14 41 57.6 21 286 -11 22 13 37 21 44 31 22 31 23 21 26 37 0.60 -135 0 0 21 55 33 14 41 54.4 20 287 -10 22 10 6 21 40 58 22 27 53 21 23 2 0.60 -134 0 0 21 51 8 14 41 51.2 20 287 -9 22 5 42 21 36 31 22 23 31 21 18 34 0.60 -133 0 0 21 45 49 14 41 48.3 19 287 -8 22 0 25 21 31 11 22 18 16 21 13 12 0.60 -132 0 0 21 39 38 14 41 45.4 18 288 -7 21 54 15 21 24 58 22 12 8 21 6 56 0.60 -131 0 0 21 32 32 14 41 42.7 17 288 -7 21 47 12 21 17 50 22 5 7 20 59 46 0.60 -130 0 0 21 24 32 14 41 40.1 16 288 -6 21 39 14 21 9 48 21 57 12 20 51 42 0.60 -129 0 0 21 15 38 14 41 37.6 15 289 -5 21 30 23 21 0 51 21 48 23 20 42 42 0.61 -128 0 0 21 5 49 14 41 35.3 14 289 -4 21 20 36 20 50 59 21 38 40 20 32 46 0.61 -127 0 0 20 55 4 14 41 33.1 13 289 -3 21 9 54 20 40 11 21 28 1 20 21 55 0.61 -126 0 0 20 43 22 14 41 31.0 12 290 -2 20 58 15 20 28 27 21 16 27 20 10 6 0.61 -125 0 0 20 30 44 14 41 29.1 11 290 -1 20 45 40 20 15 45 21 3 56 19 57 20 0.61 -124 0 0 20 17 8 14 41 27.3 10 290 0 20 32 8 20 2 5 20 50 28 19 43 36 0.62 -123 0 0 20 2 34 14 41 25.7 9 291 1 20 17 38 19 47 27 20 36 3 19 28 52 0.62 -122 0 0 19 47 0 14 41 24.2 8 291 2 20 2 9 19 31 49 20 20 38 19 13 9 0.62 -121 0 0 19 30 27 14 41 22.9 7 291 3 19 45 40 19 15 11 20 4 15 18 56 26 0.62 -120 0 0 19 12 52 14 41 21.7 6 291 4 19 28 10 18 57 32 19 46 51 18 38 41 0.63 -119 0 0 18 54 16 14 41 20.7 5 292 5 19 9 39 18 38 51 19 28 26 18 19 53 0.64 -118 0 0 18 34 37 14 41 19.8 4 292 6 18 50 5 18 19 6 19 8 59 18 0 2 0.64 -117 0 0 18 13 54 14 41 19.1 3 292 7 18 29 28 17 58 17 18 48 28 17 39 6 0.66 -116 0 0 17 52 6 14 41 18.6 2 293 8 18 7 46 17 36 23 18 26 54 17 17 5 0.68 -115 0 0 17 29 12 14 41 18.3 1 293 9 17 44 58 17 13 23 18 4 13 16 53 56 0.74 -114 0 0 17 5 10 14 41 18.1 0 293 10 17 21 3 16 49 15 .. .. .. 16 29 40 1.12 Uncertainty in time = +/- 2 secs Prediction of 2019 Oct 15.0 Data for the target star ------------------------ * name: UCAC4-562-018577 * constellation : Taurus * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 37 21.4016 DE: +22 23 19.157 * position source: Gaia DR2 * standard error: RA,DE [mas]: (0.900,0.700) * V mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (132) Aethra asteroid class: approx. diameter [km]: 46 approx. diameter ["]: 0.062 distance from Earth [AU]: 1.02190 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: Preston date of fit: 2019 Oct 15 source of used astrometry: MPC, FASTT, TMO number of used observations: 2121 number of rejected observations: 10 time covered by the observations: 1960 Dec 18 - 2019 Feb 05 1 sigma uncertainty ellipse (major, minor, PA): 0.040", 0.014", 113.3° remarks: * orbital elements for (132)Aethra : Mean anomaly = 324.75534370 deg Arg. of pericenter = 255.17712881 deg Long. of node = 258.39310468 deg Inclination = 24.99425309 deg Eccentricity = 0.38963407 Semimajor axis = 2.60841770 AU Perihelion dist = 1.59208931 AU Mag: H = 9.38, G = 0.15 Epoch of elements : MJD 58823.61700000 TDT (2019 Dec 06.6170) ------ occelmnt file for Occult BEGIN ----------------------------------- Preston2019Oct15,3.5,2019,12,6,14.8052,0.37871,-0.33437,-4.88424,-5.53906,-0.00100,0.00005,0.00000,0.00000 147.4641,22.3988,-44.34,-22.50 UCAC4-562-018577,5.62261156,22.3886546,0.00,12.03,0.00,0.0,0,,5.64272142,22.3988374 132,Aethra,11.37,46.3,1.0219,0,0,-3.031,-47.68, 0,324.6110,2019,12,6,255.1771,258.3931,24.9943,0.38963,2.60842,1.59209,9.38,5.0,0.15 1.613,0.0400,0.0140,113,0.0383,Known errors 20191206_018577,58771.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2019 Oct 15, 04:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org