IOTA/IOTA-ES occultation update for (598) Octavia / UCAC4 356-111364 event on 2022 May 19, 07:55 UT Visible from USA, Mexico Summary ------- On 2022 May 19 UT, the 76.1 km diameter asteroid (598) Octavia will occult a 11.8 mag star in the constellation Ophiuchus for observers along a path across USA, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.63 mag to 14.37 mag (the magnitude of the asteroid) for at most 7.360 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: 96 * date and approx. time of event: 2022 May 19, 07:49 - 2022 May 19, 08:02 * geocentric midpoint of event [JD]: 2459718.83060329 * magnitude of target star: 11.84 * magnitude drop [mag]: 2.63 * estimated maximum duration [s]: 7.360 * Moon: 86 % sunlit, 17° distance * Sun: 152° distance * rough path description: USA, Mexico Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 119 * 1 sigma uncertainty interval [path widths]: +/- 0.42 * 1 sigma uncertainty interval [seconds]: +/- 3.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.020) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.019", 104°) * approx speed of asteroid's shadow [km/s]: 10.3456 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 356-111364 by 598 Octavia on 2022 May 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 -166 0 0 37 9 7 8 2 34.2 1 114 -19 37 45 15 36 33 29 38 16 2 .. .. .. .... -165 0 0 36 48 8 8 2 34.0 1 115 -20 37 24 8 36 12 39 37 54 47 .. .. .. -0.70 -164 0 0 36 27 33 8 2 33.5 2 116 -21 37 3 24 35 52 11 37 33 56 .. .. .. -0.91 -163 0 0 36 7 21 8 2 32.8 3 116 -22 36 43 4 35 32 7 37 13 30 35 2 51 -1.00 -162 0 0 35 47 34 8 2 31.9 4 117 -23 36 23 9 35 12 28 36 53 27 34 43 18 -1.05 -161 0 0 35 28 11 8 2 30.8 5 117 -23 36 3 39 34 53 13 36 33 50 34 24 9 -1.09 -160 0 0 35 9 14 8 2 29.4 6 118 -24 35 44 33 34 34 23 36 14 38 34 5 25 -1.11 -159 0 0 34 50 42 8 2 27.9 7 118 -25 35 25 54 34 15 58 35 55 52 33 47 6 -1.13 -158 0 0 34 32 36 8 2 26.1 7 119 -26 35 7 40 33 57 59 35 37 32 33 29 13 -1.14 -157 0 0 34 14 56 8 2 24.1 8 120 -26 34 49 53 33 40 26 35 19 39 33 11 46 -1.15 -156 0 0 33 57 43 8 2 21.9 9 120 -27 34 32 33 33 23 20 35 2 12 32 54 45 -1.16 -155 0 0 33 40 57 8 2 19.4 10 121 -28 34 15 40 33 6 40 34 45 13 32 38 11 -1.16 -154 0 0 33 24 37 8 2 16.8 11 121 -29 33 59 14 32 50 28 34 28 41 32 22 4 -1.17 -153 0 0 33 8 46 8 2 13.9 12 122 -29 33 43 15 32 34 42 34 12 37 32 6 23 -1.17 -152 0 0 32 53 22 8 2 10.8 13 122 -30 33 27 45 32 19 24 33 57 1 31 51 11 -1.18 -151 0 0 32 38 25 8 2 7.6 13 123 -31 33 12 42 32 4 34 33 41 53 31 36 25 -1.18 -150 0 0 32 23 57 8 2 4.1 14 124 -31 32 58 8 31 50 12 33 27 13 31 22 8 -1.18 -149 0 0 32 9 58 8 2 0.4 15 124 -32 32 44 3 31 36 18 33 13 3 31 8 19 -1.19 -148 0 0 31 56 27 8 1 56.5 16 125 -32 32 30 26 31 22 53 32 59 21 30 54 58 -1.19 -147 0 0 31 43 25 8 1 52.4 17 125 -33 32 17 18 31 9 56 32 46 9 30 42 5 -1.19 -146 0 0 31 30 51 8 1 48.1 17 126 -34 32 4 40 30 57 28 32 33 25 30 29 41 -1.19 -145 0 0 31 18 47 8 1 43.7 18 127 -34 31 52 30 30 45 28 32 21 11 30 17 46 -1.19 -144 0 0 31 7 12 8 1 39.0 19 127 -35 31 40 50 30 33 58 32 9 27 30 6 19 -1.19 -143 0 0 30 56 6 8 1 34.2 20 128 -35 31 29 40 30 22 57 31 58 13 29 55 22 -1.20 -142 0 0 30 45 30 8 1 29.2 21 129 -36 31 18 59 30 12 25 31 47 28 29 44 54 -1.20 -141 0 0 30 35 23 8 1 24.0 21 129 -36 31 8 48 30 2 23 31 37 13 29 34 55 -1.20 -140 0 0 30 25 47 8 1 18.6 22 130 -37 30 59 7 29 52 50 31 27 28 29 25 25 -1.20 -139 0 0 30 16 39 8 1 13.1 23 131 -37 30 49 56 29 43 46 31 18 14 29 16 25 -1.20 -138 0 0 30 8 2 8 1 7.4 24 131 -38 30 41 15 29 35 13 31 9 29 29 7 54 -1.20 -137 0 0 29 59 55 8 1 1.5 24 132 -38 30 33 4 29 27 9 31 1 15 28 59 53 -1.20 -136 0 0 29 52 17 8 0 55.5 25 133 -38 30 25 23 29 19 34 30 53 32 28 52 21 -1.20 -135 0 0 29 45 10 8 0 49.3 26 133 -39 30 18 12 29 12 30 30 46 18 28 45 19 -1.20 -134 0 0 29 38 32 8 0 43.0 26 134 -39 30 11 32 29 5 55 30 39 35 28 38 47 -1.20 -133 0 0 29 32 25 8 0 36.5 27 135 -39 30 5 22 28 59 51 30 33 23 28 32 45 -1.20 -132 0 0 29 26 48 8 0 29.8 28 136 -40 29 59 43 28 54 16 30 27 41 28 27 12 -1.20 -131 0 0 29 21 41 8 0 23.1 28 136 -40 29 54 33 28 49 12 30 22 30 28 22 9 -1.20 -130 0 0 29 17 4 8 0 16.2 29 137 -40 29 49 54 28 44 37 30 17 49 28 17 36 -1.20 -129 0 0 29 12 58 8 0 9.1 30 138 -40 29 45 46 28 40 32 30 13 39 28 13 33 -1.20 -128 0 0 29 9 21 8 0 1.9 30 139 -41 29 42 8 28 36 58 30 9 59 28 10 0 -1.20 -127 0 0 29 6 15 7 59 54.6 31 140 -41 29 39 0 28 33 53 30 6 50 28 6 56 -1.20 -126 0 0 29 3 39 7 59 47.2 31 140 -41 29 36 23 28 31 18 30 4 12 28 4 23 -1.20 -125 0 0 29 1 34 7 59 39.7 32 141 -41 29 34 16 28 29 14 30 2 4 28 2 19 -1.20 -124 0 0 28 59 58 7 59 32.0 33 142 -41 29 32 40 28 27 39 30 0 27 28 0 45 -1.20 -123 0 0 28 58 53 7 59 24.3 33 143 -41 29 31 33 28 26 34 29 59 20 27 59 41 -1.20 -122 0 0 28 58 17 7 59 16.4 34 144 -41 29 30 58 28 25 59 29 58 44 27 59 6 -1.21 -121 0 0 28 58 12 7 59 8.4 34 145 -41 29 30 52 28 25 54 29 58 38 27 59 2 -1.21 -120 0 0 28 58 37 7 59 0.4 35 146 -41 29 31 17 28 26 19 29 59 3 27 59 27 -1.21 -119 0 0 28 59 32 7 58 52.2 35 147 -41 29 32 12 28 27 14 29 59 58 28 0 21 -1.21 -118 0 0 29 0 57 7 58 44.0 35 148 -41 29 33 37 28 28 39 30 1 23 28 1 46 -1.21 -117 0 0 29 2 51 7 58 35.6 36 149 -41 29 35 32 28 30 33 30 3 19 28 3 39 -1.21 -116 0 0 29 5 16 7 58 27.2 36 150 -41 29 37 57 28 32 57 30 5 45 28 6 3 -1.21 -115 0 0 29 8 10 7 58 18.7 37 151 -41 29 40 52 28 35 50 30 8 41 28 8 56 -1.21 -114 0 0 29 11 34 7 58 10.2 37 152 -41 29 44 18 28 39 13 30 12 7 28 12 18 -1.21 -113 0 0 29 15 28 7 58 1.6 37 153 -41 29 48 13 28 43 6 30 16 3 28 16 9 -1.21 -112 0 0 29 19 51 7 57 52.9 38 154 -40 29 52 37 28 47 27 30 20 29 28 20 30 -1.21 -111 0 0 29 24 44 7 57 44.1 38 155 -40 29 57 32 28 52 19 30 25 25 28 25 20 -1.21 -110 0 0 29 30 6 7 57 35.3 38 156 -40 30 2 56 28 57 39 30 30 50 28 30 39 -1.21 -109 0 0 29 35 58 7 57 26.5 38 157 -40 30 8 50 29 3 28 30 36 46 28 36 26 -1.21 -108 0 0 29 42 18 7 57 17.6 39 158 -39 30 15 12 29 9 47 30 43 11 28 42 43 -1.21 -107 0 0 29 49 8 7 57 8.6 39 160 -39 30 22 5 29 16 34 30 50 5 28 49 28 -1.21 -106 0 0 29 56 27 7 56 59.7 39 161 -39 30 29 26 29 23 50 30 57 29 28 56 43 -1.21 -105 0 0 30 4 15 7 56 50.7 39 162 -38 30 37 17 29 31 35 31 5 22 29 4 25 -1.21 -104 0 0 30 12 31 7 56 41.6 39 163 -38 30 45 36 29 39 49 31 13 44 29 12 36 -1.21 -103 0 0 30 21 16 7 56 32.6 39 164 -37 30 54 25 29 48 31 31 22 35 29 21 16 -1.21 -102 0 0 30 30 30 7 56 23.5 39 165 -37 31 3 42 29 57 41 31 31 55 29 30 23 -1.21 -101 0 0 30 40 11 7 56 14.5 39 167 -36 31 13 27 30 7 19 31 41 44 29 39 59 -1.21 -100 0 0 30 50 22 7 56 5.4 39 168 -36 31 23 41 30 17 26 31 52 1 29 50 2 -1.21 - 99 0 0 31 1 0 7 55 56.3 39 169 -36 31 34 23 30 28 0 32 2 47 30 0 33 -1.21 - 98 0 0 31 12 6 7 55 47.2 39 170 -35 31 45 33 30 39 2 32 14 1 30 11 32 -1.22 - 97 0 0 31 23 39 7 55 38.1 39 171 -34 31 57 11 30 50 31 32 25 43 30 22 58 -1.22 - 96 0 0 31 35 41 7 55 29.0 39 172 -34 32 9 17 31 2 28 32 37 53 30 34 51 -1.22 - 95 0 0 31 48 9 7 55 20.0 39 174 -33 32 21 51 31 14 52 32 50 30 30 47 11 -1.22 - 94 0 0 32 1 5 7 55 11.0 39 175 -33 32 34 51 31 27 43 33 3 35 30 59 58 -1.22 - 93 0 0 32 14 27 7 55 2.0 39 176 -32 32 48 19 31 41 1 33 17 7 31 13 12 -1.22 - 92 0 0 32 28 17 7 54 53.0 39 177 -32 33 2 13 31 54 45 33 31 6 31 26 52 -1.22 - 91 0 0 32 42 32 7 54 44.1 39 178 -31 33 16 35 32 8 55 33 45 32 31 40 58 -1.22 - 90 0 0 32 57 14 7 54 35.2 38 180 -30 33 31 22 32 23 32 34 0 25 31 55 30 -1.22 - 89 0 0 33 12 22 7 54 26.3 38 181 -30 33 46 36 32 38 34 34 15 44 32 10 28 -1.22 - 88 0 0 33 27 56 7 54 17.5 38 182 -29 34 2 15 32 54 2 34 31 28 32 25 51 -1.22 - 87 0 0 33 43 55 7 54 8.8 37 183 -28 34 18 21 33 9 55 34 47 39 32 41 39 -1.22 - 86 0 0 34 0 19 7 54 0.1 37 184 -28 34 34 51 33 26 13 35 4 15 32 57 52 -1.22 - 85 0 0 34 17 8 7 53 51.5 37 185 -27 34 51 46 33 42 56 35 21 16 33 14 30 -1.22 - 84 0 0 34 34 21 7 53 43.0 36 186 -26 35 9 7 34 0 3 35 38 42 33 31 32 -1.23 - 83 0 0 34 51 59 7 53 34.5 36 187 -26 35 26 51 34 17 34 35 56 32 33 48 58 -1.23 - 82 0 0 35 10 0 7 53 26.1 36 189 -25 35 44 59 34 35 29 36 14 46 34 6 47 -1.23 - 81 0 0 35 28 25 7 53 17.8 35 190 -24 36 3 31 34 53 47 36 33 25 34 25 0 -1.23 - 80 0 0 35 47 13 7 53 9.6 35 191 -23 36 22 26 35 12 28 36 52 26 34 43 35 -1.23 - 79 0 0 36 6 24 7 53 1.5 34 192 -23 36 41 44 35 31 31 37 11 51 35 2 33 -1.23 - 78 0 0 36 25 57 7 52 53.5 34 193 -22 37 1 25 35 50 57 37 31 38 35 21 53 -1.23 - 77 0 0 36 45 52 7 52 45.6 33 194 -21 37 21 27 36 10 45 37 51 47 35 41 34 -1.23 - 76 0 0 37 6 8 7 52 37.8 33 195 -20 37 41 51 36 30 53 38 12 17 36 1 37 -1.23 - 75 0 0 37 26 45 7 52 30.2 32 196 -19 38 2 36 36 51 23 38 33 9 36 22 1 -1.23 - 74 0 0 37 47 43 7 52 22.6 32 197 -19 38 23 42 37 12 13 38 54 22 36 42 45 -1.23 - 73 0 0 38 9 1 7 52 15.2 31 198 -18 38 45 8 37 33 23 39 15 55 37 3 49 -1.24 - 72 0 0 38 30 38 7 52 7.9 31 199 -17 39 6 53 37 54 53 39 37 47 37 25 12 -1.24 - 71 0 0 38 52 34 7 52 0.7 30 200 -16 39 28 58 38 16 41 39 59 59 37 46 54 -1.24 - 70 0 0 39 14 49 7 51 53.7 29 201 -15 39 51 21 38 38 48 40 22 29 38 8 54 -1.24 - 69 0 0 39 37 21 7 51 46.8 29 202 -15 40 14 2 39 1 12 40 45 17 38 31 12 -1.24 - 68 0 0 40 0 11 7 51 40.0 28 203 -14 40 37 0 39 23 54 41 8 23 38 53 47 -1.24 - 67 0 0 40 23 17 7 51 33.4 27 203 -13 41 0 15 39 46 52 41 31 45 39 16 39 -1.24 - 66 0 0 40 46 40 7 51 27.0 27 204 -12 41 23 46 40 10 7 41 55 23 39 39 47 -1.24 - 65 0 0 41 10 18 7 51 20.7 26 205 -11 41 47 32 40 33 37 42 19 17 40 3 10 -1.24 - 64 0 0 41 34 10 7 51 14.6 25 206 -11 42 11 33 40 57 21 42 43 26 40 26 48 -1.24 - 63 0 0 41 58 17 7 51 8.6 25 207 -10 42 35 48 41 21 20 43 7 49 40 50 40 -1.24 - 62 0 0 42 22 37 7 51 2.8 24 208 -9 43 0 17 41 45 32 43 32 25 41 14 45 -1.24 - 61 0 0 42 47 10 7 50 57.2 23 209 -8 43 24 58 42 9 56 43 57 13 41 39 3 -1.25 - 60 0 0 43 11 55 7 50 51.7 23 210 -7 43 49 51 42 34 33 44 22 14 42 3 33 -1.25 - 59 0 0 43 36 50 7 50 46.5 22 210 -7 44 14 55 42 59 21 44 47 26 42 28 15 -1.25 - 58 0 0 44 1 57 7 50 41.3 21 211 -6 44 40 10 43 24 19 45 12 48 42 53 7 -1.25 - 57 0 0 44 27 13 7 50 36.4 21 212 -5 45 5 34 43 49 27 45 38 19 43 18 8 -1.25 - 56 0 0 44 52 37 7 50 31.7 20 213 -4 45 31 7 44 14 44 46 3 59 43 43 19 -1.25 - 55 0 0 45 18 10 7 50 27.1 19 214 -3 45 56 48 44 40 9 46 29 47 44 8 38 -1.25 - 54 0 0 45 43 50 7 50 22.7 18 215 -2 46 22 36 45 5 41 46 55 42 44 34 4 -1.25 - 53 0 0 46 9 37 7 50 18.5 18 215 -2 46 48 30 45 31 20 47 21 43 44 59 37 -1.25 - 52 0 0 46 35 29 7 50 14.5 17 216 -1 47 14 30 45 57 5 47 47 49 45 25 16 -1.25 - 51 0 0 47 1 25 7 50 10.7 16 217 0 47 40 34 46 22 54 48 14 0 45 51 0 -1.25 - 50 0 0 47 27 26 7 50 7.1 15 218 1 48 6 42 46 48 48 48 40 14 46 16 47 -1.26 - 49 0 0 47 53 29 7 50 3.6 15 219 2 48 32 52 47 14 45 49 6 31 46 42 39 -1.26 - 48 0 0 48 19 34 7 50 0.4 14 219 2 48 59 4 47 40 43 49 32 49 47 8 32 -1.26 - 47 0 0 48 45 41 7 49 57.3 13 220 3 49 25 18 48 6 44 49 59 8 47 34 27 -1.26 - 46 0 0 49 11 48 7 49 54.4 12 221 4 49 51 31 48 32 44 50 25 27 48 0 23 -1.26 - 45 0 0 49 37 54 7 49 51.7 12 222 5 50 17 43 48 58 45 50 51 45 48 26 19 -1.26 - 44 0 0 50 3 59 7 49 49.2 11 222 5 50 43 54 49 24 44 51 18 1 48 52 14 -1.26 - 43 0 0 50 30 1 7 49 46.8 10 223 6 51 10 2 49 50 41 51 44 14 49 18 6 -1.26 - 42 0 0 50 56 1 7 49 44.7 9 224 7 51 36 7 50 16 35 52 10 23 49 43 56 -1.27 - 41 0 0 51 21 56 7 49 42.7 9 225 8 52 2 7 50 42 26 52 36 28 50 9 43 -1.27 - 40 0 0 51 47 46 7 49 40.9 8 226 8 52 28 1 51 8 11 53 2 26 50 35 25 -1.27 - 39 0 0 52 13 30 7 49 39.3 7 226 9 52 53 50 51 33 52 53 28 19 51 1 2 -1.27 - 38 0 0 52 39 8 7 49 37.9 6 227 10 53 19 31 51 59 25 53 54 4 51 26 33 -1.27 - 37 0 0 53 4 38 7 49 36.6 6 228 11 53 45 5 52 24 52 54 19 40 51 51 57 -1.28 - 36 0 0 53 29 59 7 49 35.5 5 229 11 54 10 30 52 50 11 54 45 8 52 17 13 -1.28 - 35 0 0 53 55 12 7 49 34.5 4 230 12 54 35 45 53 15 21 55 10 26 52 42 21 -1.29 - 34 0 0 54 20 14 7 49 33.7 3 230 13 55 0 50 53 40 21 55 35 33 53 7 19 -1.30 - 33 0 0 54 45 6 7 49 33.1 3 231 13 55 25 44 54 5 11 56 0 29 53 32 8 -1.31 - 32 0 0 55 9 47 7 49 32.6 2 232 14 55 50 26 54 29 50 56 25 12 53 56 45 -1.34 - 31 0 0 55 34 15 7 49 32.3 1 233 15 56 14 56 54 54 17 56 49 42 54 21 12 -1.38 - 30 0 0 55 58 31 7 49 32.1 1 234 15 56 39 12 55 18 32 .. .. .. 54 45 26 -1.53 Uncertainty in time = +/- 4 secs Prediction of 2022 Apr 15.8 Data for the target star ------------------------ * name: UCAC4 356-111364 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 42 34.6459 DE: -18 52 59.980 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 42 34.6459 DE: -18 52 59.980 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.400,0.200) * V mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (598) Octavia asteroid class: approx. diameter [km]: 76 approx. diameter ["]: 0.050 distance from Earth [AU]: 2.11650 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 date of fit: 2022 Apr 12 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): 0.027", 0.019", 104.262° remarks: * orbital elements for (598)Octavia : Mean anomaly = 258.6490426849 deg Arg. of pericenter = 292.1304364689 deg Long. of node = 91.5076247106 deg Inclination = 12.2299193051 deg Eccentricity = 0.2509580918 Semimajor axis = 2.7594083011 AU Perihelion dist = 2.0669124593 AU Mag: H = 9.70, G = 0.15 Epoch of elements : MJD 59718.33048611 TDT (2022 May 19.3305) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522022Apr12,7.36,2022,5,19,7.934479,-0.146960,0.756635,-5.735690,-1.095433,-0.002668,-0.000313,0.000001,0.000000 -90.0142,-18.8941,60.11,19.79,False UCAC4 356-111364,17.70962387,-18.8833278,0.00,11.84,0.00,0.0,0,,17.73163858,-18.8941338,2.63,0.00,0,0,0 598,Octavia,14.37,76.1,2.1165,0,0,-1.679,-4.55,,5.0 0,258.5780,2022,5,19,292.1304,91.5076,12.2299,0.25096,2.75941,2.06691,9.72,5.0,0.15 1.420,0.0267,0.0193,104,0.0208,Known errors,-1.00,-1,-1,-1 20220519_111364,59684.83 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Apr 15, 19:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org