IOTA/IOTA-ES occultation update for (1548) Palomaa / UCAC4 350-110832 event on 2024 Oct 19, 03:07 UT Visible from Summary ------- On 2024 Oct 19 UT, the 30.2022974300937 km diameter asteroid (1548) Palomaa will occult a 12.0 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.23 mag to 17.19 mag (the magnitude of the asteroid) for at most 0.920 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: 99 * date and approx. time of event: 2024 Oct 19, 03:05 - 2024 Oct 19, 03:09 * geocentric midpoint of event [JD]: 2460602.63011341 * magnitude of target star: 11.97 * magnitude drop [mag]: 5.23 * estimated maximum duration [s]: 0.920 * Moon: 96 % sunlit, 142° distance * Sun: 60° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 43 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 107°) * approx speed of asteroid's shadow [km/s]: 33.0010 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 350-110832 by 1548 Palomaa on 2024 Oct 19 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 130 0 0 52 23 48 3 5 5.5 0 124 28 52 9 47 .. .. .. 52 5 5 .. .. .. .... 131 0 0 51 58 35 3 5 5.5 1 125 28 51 44 35 52 12 40 51 39 52 52 17 26 -0.20 132 0 0 51 33 6 3 5 5.6 2 126 28 51 19 5 51 47 11 51 14 23 51 51 57 -0.59 133 0 0 51 7 21 3 5 5.7 2 127 29 50 53 20 51 21 26 50 48 37 51 26 12 -0.73 134 0 0 50 41 20 3 5 5.9 3 127 29 50 27 19 50 55 26 50 22 36 51 0 12 -0.79 135 0 0 50 15 4 3 5 6.1 4 128 30 50 1 3 50 29 10 49 56 20 50 33 56 -0.83 136 0 0 49 48 34 3 5 6.3 5 129 30 49 34 32 50 2 39 49 29 50 50 7 25 -0.86 137 0 0 49 21 50 3 5 6.7 5 130 30 49 7 49 49 35 55 49 3 6 49 40 41 -0.88 138 0 0 48 54 53 3 5 7.0 6 130 31 48 40 52 49 8 58 48 36 9 49 13 44 -0.89 139 0 0 48 27 43 3 5 7.5 7 131 31 48 13 43 48 41 48 48 9 1 48 46 34 -0.90 140 0 0 48 0 23 3 5 8.0 8 132 31 47 46 23 48 14 27 47 41 41 48 19 12 -0.91 141 0 0 47 32 51 3 5 8.5 9 133 32 47 18 52 47 46 55 47 14 10 47 51 40 -0.92 142 0 0 47 5 10 3 5 9.1 9 133 32 46 51 11 47 19 13 46 46 30 47 23 58 -0.93 143 0 0 46 37 20 3 5 9.8 10 134 32 46 23 22 46 51 21 46 18 41 46 56 6 -0.93 144 0 0 46 9 21 3 5 10.5 11 135 32 45 55 24 46 23 22 45 50 43 46 28 6 -0.94 145 0 0 45 41 15 3 5 11.3 12 136 33 45 27 20 45 55 15 45 22 39 45 59 59 -0.94 146 0 0 45 13 3 3 5 12.1 13 136 33 44 59 9 45 27 1 44 54 28 45 31 45 -0.94 147 0 0 44 44 45 3 5 13.1 13 137 33 44 30 52 44 58 42 44 26 12 45 3 25 -0.95 148 0 0 44 16 23 3 5 14.0 14 138 33 44 2 31 44 30 18 43 57 52 44 35 1 -0.95 149 0 0 43 47 57 3 5 15.1 15 139 33 43 34 7 44 1 52 43 29 28 44 6 34 -0.95 150 0 0 43 19 29 3 5 16.2 16 139 34 43 5 40 43 33 21 43 1 1 43 38 3 -0.95 151 0 0 42 50 58 3 5 17.4 17 140 34 42 37 11 43 4 49 42 32 33 43 9 30 -0.96 152 0 0 42 22 27 3 5 18.6 18 141 34 42 8 41 42 36 16 42 4 4 42 40 56 -0.96 153 0 0 41 53 56 3 5 19.9 19 142 34 41 40 12 42 7 43 41 35 36 42 12 23 -0.96 154 0 0 41 25 26 3 5 21.3 19 143 34 41 11 44 41 39 11 41 7 8 41 43 50 -0.96 155 0 0 40 56 58 3 5 22.7 20 143 34 40 43 19 41 10 42 40 38 43 41 15 20 -0.96 156 0 0 40 28 34 3 5 24.2 21 144 34 40 14 56 40 42 15 40 10 22 40 46 53 -0.96 157 0 0 40 0 14 3 5 25.8 22 145 34 39 46 38 40 13 53 39 42 4 40 18 30 -0.97 158 0 0 39 31 58 3 5 27.4 23 146 34 39 18 25 39 45 35 39 13 52 39 50 12 -0.97 159 0 0 39 3 49 3 5 29.1 23 146 34 38 50 18 39 17 24 38 45 46 39 21 59 -0.97 160 0 0 38 35 47 3 5 30.9 24 147 34 38 22 18 38 49 19 38 17 46 38 53 54 -0.97 161 0 0 38 7 53 3 5 32.7 25 148 34 37 54 26 38 21 23 37 49 55 38 25 57 -0.97 162 0 0 37 40 8 3 5 34.6 26 149 34 37 26 44 37 53 35 37 22 13 37 58 9 -0.97 163 0 0 37 12 32 3 5 36.5 27 150 33 36 59 11 37 25 58 36 54 41 37 30 30 -0.97 164 0 0 36 45 8 3 5 38.6 28 151 33 36 31 49 36 58 31 36 27 20 37 3 2 -0.97 165 0 0 36 17 55 3 5 40.6 28 151 33 36 4 38 36 31 16 36 0 11 36 35 46 -0.98 166 0 0 35 50 55 3 5 42.8 29 152 33 35 37 41 36 4 13 35 33 14 36 8 43 -0.98 167 0 0 35 24 9 3 5 44.9 30 153 33 35 10 57 35 37 24 35 6 31 35 41 53 -0.98 168 0 0 34 57 37 3 5 47.2 31 154 32 34 44 27 35 10 49 34 40 2 35 15 17 -0.98 169 0 0 34 31 20 3 5 49.5 31 155 32 34 18 13 34 44 30 34 13 48 34 48 57 -0.98 170 0 0 34 5 19 3 5 51.9 32 156 32 33 52 15 34 18 26 33 47 51 34 22 53 -0.98 171 0 0 33 39 35 3 5 54.3 33 157 31 33 26 33 33 52 40 33 22 10 33 57 5 -0.98 172 0 0 33 14 9 3 5 56.7 34 158 31 33 1 10 33 27 11 32 56 48 33 31 36 -0.98 173 0 0 32 49 1 3 5 59.2 34 159 31 32 36 4 33 2 1 32 31 43 33 6 24 -0.98 174 0 0 32 24 13 3 6 1.8 35 160 30 32 11 19 32 37 10 32 6 58 32 41 32 -0.98 175 0 0 31 59 44 3 6 4.4 36 161 30 31 46 53 32 12 39 31 42 33 32 17 1 -0.98 176 0 0 31 35 36 3 6 7.1 36 162 29 31 22 47 31 48 28 31 18 29 31 52 49 -0.98 177 0 0 31 11 50 3 6 9.8 37 163 29 30 59 3 31 24 39 30 54 46 31 28 59 -0.99 178 0 0 30 48 26 3 6 12.5 38 164 28 30 35 42 31 1 12 30 31 25 31 5 32 -0.99 179 0 0 30 25 24 3 6 15.3 38 165 28 30 12 42 30 38 8 30 8 26 30 42 27 -0.99 -180 0 0 30 2 46 3 6 18.1 39 166 27 29 50 7 30 15 28 29 45 51 30 19 45 -0.99 -179 0 0 29 40 31 3 6 21.0 39 167 27 29 27 55 29 53 11 29 23 40 29 57 27 -0.99 -178 0 0 29 18 41 3 6 23.9 40 168 26 29 6 7 29 31 18 29 1 54 29 35 34 -0.99 -177 0 0 28 57 17 3 6 26.8 40 170 25 28 44 45 29 9 51 28 40 32 29 14 6 -0.99 -176 0 0 28 36 17 3 6 29.7 41 171 25 28 23 48 28 48 50 28 19 36 28 53 4 -0.99 -175 0 0 28 15 45 3 6 32.7 41 172 24 28 3 18 28 28 14 27 59 6 28 32 28 -0.99 -174 0 0 27 55 38 3 6 35.7 42 173 24 27 43 14 28 8 6 27 39 3 28 12 19 -0.99 -173 0 0 27 35 59 3 6 38.8 42 174 23 27 23 37 27 48 24 27 19 27 27 52 36 -0.99 -172 0 0 27 16 48 3 6 41.9 43 176 22 27 4 27 27 29 11 27 0 18 27 33 22 -0.99 -171 0 0 26 58 4 3 6 44.9 43 177 22 26 45 46 27 10 25 26 41 38 27 14 35 -0.99 -170 0 0 26 39 49 3 6 48.0 43 178 21 26 27 33 26 52 8 26 23 25 26 56 17 -0.99 -169 0 0 26 22 3 3 6 51.2 44 180 20 26 9 49 26 34 19 26 5 42 26 38 28 -0.99 -168 0 0 26 4 45 3 6 54.3 44 181 19 25 52 33 26 17 0 25 48 27 26 21 8 -0.99 -167 0 0 25 47 58 3 6 57.5 44 182 19 25 35 48 26 0 11 25 31 42 26 4 18 -0.99 -166 0 0 25 31 40 3 7 0.6 44 184 18 25 19 32 25 43 51 25 15 28 25 47 58 -1.00 -165 0 0 25 15 53 3 7 3.8 45 185 17 25 3 47 25 28 2 24 59 43 25 32 8 -1.00 -164 0 0 25 0 36 3 7 7.0 45 186 16 24 48 32 25 12 43 24 44 28 25 16 49 -1.00 -163 0 0 24 45 50 3 7 10.2 45 188 16 24 33 48 24 57 56 24 29 45 25 2 1 -1.00 -162 0 0 24 31 36 3 7 13.4 45 189 15 24 19 35 24 43 39 24 15 32 24 47 44 -1.00 -161 0 0 24 17 52 3 7 16.6 45 190 14 24 5 53 24 29 54 24 1 51 24 33 58 -1.00 -160 0 0 24 4 40 3 7 19.8 45 192 13 23 52 43 24 16 41 23 48 41 24 20 44 -1.00 -159 0 0 23 52 0 3 7 23.0 45 193 12 23 40 4 24 3 59 23 36 3 24 8 2 -1.00 -158 0 0 23 39 52 3 7 26.2 45 195 11 23 27 58 23 51 50 23 23 57 23 55 52 -1.00 -157 0 0 23 28 17 3 7 29.4 45 196 11 23 16 24 23 40 13 23 12 24 23 44 14 -1.00 -156 0 0 23 17 14 3 7 32.6 45 197 10 23 5 22 23 29 8 23 1 22 23 33 9 -1.00 -155 0 0 23 6 43 3 7 35.8 45 199 9 22 54 52 23 18 36 22 50 53 23 22 37 -1.00 -154 0 0 22 56 45 3 7 39.0 45 200 8 22 44 56 23 8 37 22 40 57 23 12 38 -1.00 -153 0 0 22 47 20 3 7 42.1 44 201 7 22 35 32 22 59 11 22 31 34 23 3 11 -1.00 -152 0 0 22 38 29 3 7 45.3 44 202 6 22 26 41 22 50 18 22 22 43 22 54 18 -1.00 -151 0 0 22 30 10 3 7 48.4 44 204 5 22 18 24 22 41 59 22 14 26 22 45 58 -1.00 -150 0 0 22 22 25 3 7 51.5 44 205 5 22 10 39 22 34 12 22 6 42 22 38 11 -1.00 -149 0 0 22 15 13 3 7 54.6 43 206 4 22 3 28 22 26 59 21 59 31 22 30 58 -1.00 -148 0 0 22 8 34 3 7 57.7 43 207 3 21 56 51 22 20 20 21 52 54 22 24 19 -1.00 -147 0 0 22 2 29 3 8 0.8 43 209 2 21 50 47 22 14 15 21 46 50 22 18 13 -1.00 -146 0 0 21 56 58 3 8 3.8 42 210 1 21 45 16 22 8 43 21 41 20 22 12 41 -1.00 -145 0 0 21 52 1 3 8 6.9 42 211 0 21 40 20 22 3 45 21 36 24 22 7 43 -1.00 -144 0 0 21 47 37 3 8 9.9 42 212 -1 21 35 56 21 59 21 21 32 1 22 3 18 -1.00 -143 0 0 21 43 47 3 8 12.8 41 213 -2 21 32 7 21 55 30 21 28 12 21 59 28 -1.00 -142 0 0 21 40 32 3 8 15.8 41 214 -3 21 28 52 21 52 14 21 24 56 21 56 11 -1.00 -141 0 0 21 37 49 3 8 18.7 40 215 -4 21 26 10 21 49 31 21 22 15 21 53 29 -1.00 -140 0 0 21 35 41 3 8 21.5 40 216 -4 21 24 2 21 47 23 21 20 7 21 51 20 -1.00 -139 0 0 21 34 7 3 8 24.4 39 217 -5 21 22 28 21 45 49 21 18 33 21 49 46 -1.00 -138 0 0 21 33 7 3 8 27.2 38 218 -6 21 21 28 21 44 48 21 17 33 21 48 45 -1.00 -137 0 0 21 32 41 3 8 30.0 38 219 -7 21 21 2 21 44 22 21 17 7 21 48 19 -1.00 -136 0 0 21 32 48 3 8 32.7 37 220 -8 21 21 10 21 44 30 21 17 14 21 48 26 -1.00 -135 0 0 21 33 30 3 8 35.4 37 221 -9 21 21 51 21 45 11 21 17 56 21 49 8 -1.00 -134 0 0 21 34 45 3 8 38.0 36 222 -10 21 23 6 21 46 27 21 19 11 21 50 24 -1.00 -133 0 0 21 36 35 3 8 40.7 35 223 -11 21 24 56 21 48 16 21 21 0 21 52 13 -1.00 -132 0 0 21 38 58 3 8 43.2 35 224 -12 21 27 18 21 50 40 21 23 23 21 54 37 -1.00 -131 0 0 21 41 55 3 8 45.8 34 224 -13 21 30 15 21 53 37 21 26 20 21 57 34 -1.01 -130 0 0 21 45 25 3 8 48.2 33 225 -14 21 33 45 21 57 8 21 29 50 22 1 5 -1.01 -129 0 0 21 49 30 3 8 50.7 33 226 -15 21 37 49 22 1 13 21 33 53 22 5 10 -1.01 -128 0 0 21 54 7 3 8 53.1 32 227 -16 21 42 26 22 5 51 21 38 30 22 9 49 -1.01 -127 0 0 21 59 19 3 8 55.4 31 227 -17 21 47 37 22 11 3 21 43 41 22 15 1 -1.01 -126 0 0 22 5 3 3 8 57.7 30 228 -18 21 53 21 22 16 48 21 49 25 22 20 46 -1.01 -125 0 0 22 11 21 3 8 59.9 30 229 -19 21 59 38 22 23 7 21 55 42 22 27 5 -1.01 -124 0 0 22 18 13 3 9 2.1 29 230 -19 22 6 29 22 29 59 22 2 32 22 33 57 -1.01 -123 0 0 22 25 37 3 9 4.3 28 230 -20 22 13 52 22 37 24 22 9 55 22 41 23 -1.01 -122 0 0 22 33 34 3 9 6.3 27 231 -21 22 21 48 22 45 22 22 17 51 22 49 21 -1.01 -121 0 0 22 42 4 3 9 8.4 26 231 -22 22 30 17 22 53 53 22 26 20 22 57 53 -1.01 -120 0 0 22 51 7 3 9 10.3 26 232 -23 22 39 19 23 2 57 22 35 21 23 6 57 -1.01 -119 0 0 23 0 42 3 9 12.2 25 233 -24 22 48 53 23 12 33 22 44 55 23 16 33 -1.01 -118 0 0 23 10 49 3 9 14.1 24 233 -25 22 58 59 23 22 42 22 55 1 23 26 42 -1.01 -117 0 0 23 21 29 3 9 15.9 23 234 -26 23 9 38 23 33 23 23 5 39 23 37 24 -1.01 -116 0 0 23 32 41 3 9 17.6 22 234 -27 23 20 48 23 44 36 23 16 49 23 48 37 -1.01 -115 0 0 23 44 24 3 9 19.3 21 235 -28 23 32 30 23 56 20 23 28 30 24 0 22 -1.01 -114 0 0 23 56 39 3 9 20.9 20 236 -29 23 44 44 24 8 37 23 40 43 24 12 39 -1.01 -113 0 0 24 9 25 3 9 22.4 20 236 -30 23 57 29 24 21 25 23 53 28 24 25 28 -1.01 -112 0 0 24 22 43 3 9 23.9 19 237 -31 24 10 44 24 34 43 24 6 43 24 38 47 -1.01 -111 0 0 24 36 31 3 9 25.3 18 237 -31 24 24 31 24 48 33 24 20 29 24 52 37 -1.01 -110 0 0 24 50 50 3 9 26.6 17 238 -32 24 38 48 25 2 54 24 34 46 25 6 59 -1.01 -109 0 0 25 5 39 3 9 27.9 16 238 -33 24 53 36 25 17 45 24 49 33 25 21 50 -1.01 -108 0 0 25 20 58 3 9 29.1 15 239 -34 25 8 53 25 33 6 25 4 49 25 37 11 -1.01 -107 0 0 25 36 47 3 9 30.2 14 239 -35 25 24 40 25 48 56 25 20 36 25 53 3 -1.02 -106 0 0 25 53 5 3 9 31.3 13 240 -36 25 40 57 26 5 16 25 36 52 26 9 23 -1.02 -105 0 0 26 9 52 3 9 32.3 12 240 -37 25 57 42 26 22 6 25 53 36 26 26 13 -1.02 -104 0 0 26 27 9 3 9 33.2 11 241 -38 26 14 56 26 39 24 26 10 50 26 43 32 -1.02 -103 0 0 26 44 53 3 9 34.1 10 241 -38 26 32 39 26 57 10 26 28 32 27 1 19 -1.02 -102 0 0 27 3 5 3 9 34.8 10 242 -39 26 50 49 27 15 25 26 46 41 27 19 34 -1.02 -101 0 0 27 21 45 3 9 35.5 9 242 -40 27 9 27 27 34 7 27 5 18 27 38 17 -1.03 -100 0 0 27 40 52 3 9 36.2 8 242 -41 27 28 32 27 53 16 27 24 23 27 57 27 -1.03 - 99 0 0 28 0 26 3 9 36.7 7 243 -42 27 48 3 28 12 52 27 43 54 28 17 4 -1.04 - 98 0 0 28 20 26 3 9 37.2 6 243 -43 28 8 1 28 32 54 28 3 51 28 37 7 -1.04 - 97 0 0 28 40 52 3 9 37.6 5 244 -43 28 28 25 28 53 22 28 24 13 28 57 36 -1.05 - 96 0 0 29 1 43 3 9 38.0 4 244 -44 28 49 13 29 14 15 28 45 1 29 18 30 -1.07 - 95 0 0 29 22 59 3 9 38.2 3 245 -45 29 10 27 29 35 34 29 6 14 29 39 49 -1.09 - 94 0 0 29 44 39 3 9 38.4 2 245 -46 29 32 4 29 57 16 29 27 51 30 1 32 -1.13 - 93 0 0 30 6 42 3 9 38.5 1 246 -46 29 54 6 30 19 22 29 49 51 30 23 39 -1.25 - 92 0 0 30 29 9 3 9 38.6 0 246 -47 30 16 30 30 41 51 30 12 15 30 46 9 -2.82 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 350-110832 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 42 53.6954 DE: -20 08 30.444 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 42 53.6954 DE: -20 08 30.444 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.0 * B mag [mag]: 12.9 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1548) Palomaa asteroid class: approx. diameter [km]: 30 approx. diameter ["]: 0.014 distance from Earth [AU]: 3.08440 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 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): 0.011", 0.002", 106.645° remarks: * orbital elements for (1548)Palomaa : Mean anomaly = 70.5249921916 deg Arg. of pericenter = 87.4464506450 deg Long. of node = 116.8906316121 deg Inclination = 16.5531670033 deg Eccentricity = 0.0815759142 Semimajor axis = 2.7876541464 AU Perihelion dist = 2.5602487110 AU Mag: H = 11.61, G = 0.15 Epoch of elements : MJD 60602.13011329 TDT (2024 Oct 19.1301) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,0.92,2024,10,19,3.122722,0.150343,0.689453,18.196583,-3.979711,0.004988,0.000023,-0.000001,0.000000 -168.8420,-20.1539,129.40,-10.13,False UCAC4 350-110832,17.71491544,-20.1417900,12.87,11.97,11.48,0.1,0,,17.73919468,-20.1538661,5.22,5.26,0,0,0 1548,Palomaa,17.19,30.426,3.0844,0,0,3.685,-11.34,,1.4,0 0,70.4974,2024,10,19,87.4465,116.8906,16.5532,0.08158,2.78765,2.56025,11.61,5.0,0.15 1.169,0.0110,0.0021,107,0.0023,Known errors,0.81,0,-1,-1 20241019_110832,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org