IOTA/IOTA-ES occultation update for (433) Eros / UCAC4 301-121701 event on 2023 Jan 16, 11:32 UT Visible from SE USA Summary ------- On 2023 Jan 16 UT, the 16.9 km diameter asteroid (433) Eros will occult a 11.6 mag star in the constellation Ophiuchus for observers along a path across SE USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.62 mag to 14.13 mag (the magnitude of the asteroid) for at most 0.410 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: 2023 Jan 16, 11:30 - 2023 Jan 16, 11:34 * geocentric midpoint of event [JD]: 2459960.98084800 * magnitude of target star: 11.61 * magnitude drop [mag]: 2.62 * estimated maximum duration [s]: 0.410 * Moon: 36 % sunlit, 38° distance * Sun: 37° distance * rough path description: SE USA Additional comments ------------------- short duration The occultation path -------------------- * approximate projected width [km]: 24 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 0.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.003, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.004", 0.003", 120°) * approx speed of asteroid's shadow [km/s]: 43.7197 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 301-121701 by 433 Eros on 2023 Jan 16 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 - 91 0 0 38 27 39 11 30 37.4 1 130 -21 38 19 15 38 36 5 38 14 58 38 40 24 .... - 90 0 0 37 48 28 11 30 37.5 2 131 -20 37 40 6 37 56 51 37 35 50 38 1 9 -0.54 - 89 0 0 37 9 22 11 30 37.7 3 132 -19 37 1 2 37 17 43 36 56 47 37 22 0 -0.66 - 88 0 0 36 30 23 11 30 37.9 4 132 -18 36 22 5 36 38 42 36 17 52 36 42 57 -0.72 - 87 0 0 35 51 33 11 30 38.2 5 133 -17 35 43 18 35 59 49 35 39 5 36 4 4 -0.76 - 86 0 0 35 12 53 11 30 38.5 6 133 -16 35 4 40 35 21 7 35 0 29 35 25 20 -0.79 - 85 0 0 34 34 25 11 30 38.9 7 134 -15 34 26 15 34 42 37 34 22 5 34 46 49 -0.80 - 84 0 0 33 56 11 11 30 39.4 8 135 -14 33 48 3 34 4 20 33 43 54 34 8 31 -0.82 - 83 0 0 33 18 12 11 30 39.9 9 135 -13 33 10 7 33 26 18 33 5 59 33 30 28 -0.83 - 82 0 0 32 40 29 11 30 40.5 10 136 -12 32 32 26 32 48 33 32 28 20 32 52 41 -0.83 - 81 0 0 32 3 4 11 30 41.2 11 136 -11 31 55 4 32 11 6 31 50 59 32 15 12 -0.84 - 80 0 0 31 25 59 11 30 41.9 12 137 -10 31 18 1 31 33 57 31 13 57 31 38 3 -0.85 - 79 0 0 30 49 14 11 30 42.7 13 137 -9 30 41 19 30 57 10 30 37 16 31 1 14 -0.85 - 78 0 0 30 12 51 11 30 43.6 14 138 -8 30 4 58 30 20 45 30 0 57 30 24 47 -0.86 - 77 0 0 29 36 51 11 30 44.5 15 139 -7 29 29 1 29 44 42 29 25 1 29 48 44 -0.86 - 76 0 0 29 1 16 11 30 45.5 16 139 -6 28 53 28 29 9 4 28 49 30 29 13 5 -0.86 - 75 0 0 28 26 6 11 30 46.6 17 140 -5 28 18 21 28 33 52 28 14 24 28 37 51 -0.86 - 74 0 0 27 51 23 11 30 47.7 18 140 -4 27 43 41 27 59 7 27 39 44 28 3 4 -0.87 - 73 0 0 27 17 8 11 30 48.9 19 141 -3 27 9 28 27 24 49 27 5 33 27 28 45 -0.87 - 72 0 0 26 43 22 11 30 50.1 20 141 -2 26 35 44 26 51 0 26 31 50 26 54 55 -0.87 - 71 0 0 26 10 5 11 30 51.4 21 142 -1 26 2 30 26 17 41 25 58 38 26 21 35 -0.87 - 70 0 0 25 37 19 11 30 52.8 22 143 0 25 29 47 25 44 53 25 25 55 25 48 45 -0.88 - 69 0 0 25 5 5 11 30 54.2 23 143 1 24 57 35 25 12 36 24 53 45 25 16 27 -0.88 - 68 0 0 24 33 23 11 30 55.6 24 144 2 24 25 55 24 40 52 24 22 7 24 44 42 -0.88 - 67 0 0 24 2 15 11 30 57.2 25 145 3 23 54 49 24 9 41 23 51 2 24 13 30 -0.88 - 66 0 0 23 31 40 11 30 58.7 26 145 4 23 24 17 23 39 4 23 20 31 23 42 52 -0.88 - 65 0 0 23 1 40 11 31 0.4 27 146 5 22 54 20 23 9 2 22 50 34 23 12 49 -0.88 - 64 0 0 22 32 16 11 31 2.0 28 146 6 22 24 57 22 39 36 22 21 13 22 43 21 -0.88 - 63 0 0 22 3 28 11 31 3.8 29 147 7 21 56 11 22 10 45 21 52 28 22 14 29 -0.89 - 62 0 0 21 35 16 11 31 5.5 30 148 8 21 28 2 21 42 31 21 24 20 21 46 14 -0.89 - 61 0 0 21 7 41 11 31 7.3 31 148 9 21 0 29 21 14 54 20 56 49 21 18 36 -0.89 - 60 0 0 20 40 45 11 31 9.2 32 149 10 20 33 34 20 47 55 20 29 55 20 51 36 -0.89 - 59 0 0 20 14 26 11 31 11.1 33 150 11 20 7 18 20 21 35 20 3 39 20 25 14 -0.89 - 58 0 0 19 48 46 11 31 13.0 33 151 12 19 41 40 19 55 53 19 38 2 19 59 31 -0.89 - 57 0 0 19 23 45 11 31 15.0 34 151 13 19 16 41 19 30 50 19 13 4 19 34 27 -0.89 - 56 0 0 18 59 23 11 31 17.0 35 152 14 18 52 21 19 6 26 18 48 45 19 10 3 -0.89 - 55 0 0 18 35 41 11 31 19.1 36 153 15 18 28 41 18 42 42 18 25 6 18 46 18 -0.89 - 54 0 0 18 12 40 11 31 21.2 37 154 17 18 5 41 18 19 39 18 2 7 18 23 14 -0.89 - 53 0 0 17 50 18 11 31 23.3 37 155 18 17 43 21 17 57 16 17 39 48 18 0 50 -0.90 - 52 0 0 17 28 38 11 31 25.5 38 155 19 17 21 42 17 35 34 17 18 10 17 39 7 -0.90 - 51 0 0 17 7 38 11 31 27.7 39 156 20 17 0 44 17 14 32 16 57 13 17 18 4 -0.90 - 50 0 0 16 47 19 11 31 29.9 39 157 21 16 40 27 16 54 12 16 36 57 16 57 44 -0.90 - 49 0 0 16 27 42 11 31 32.1 40 158 22 16 20 52 16 34 34 16 17 22 16 38 4 -0.90 - 48 0 0 16 8 47 11 31 34.4 41 159 23 16 1 58 16 15 37 15 58 29 16 19 6 -0.90 - 47 0 0 15 50 33 11 31 36.7 41 160 24 15 43 46 15 57 21 15 40 17 16 0 50 -0.90 - 46 0 0 15 33 1 11 31 39.0 42 161 24 15 26 15 15 39 48 15 22 48 15 43 17 -0.90 - 45 0 0 15 16 11 11 31 41.4 43 162 25 15 9 27 15 22 57 15 6 0 15 26 25 -0.90 - 44 0 0 15 0 4 11 31 43.7 43 163 26 14 53 20 15 6 48 14 49 54 15 10 15 -0.90 - 43 0 0 14 44 39 11 31 46.1 44 164 27 14 37 56 14 51 22 14 34 31 14 54 48 -0.90 - 42 0 0 14 29 56 11 31 48.5 44 165 28 14 23 14 14 36 38 14 19 49 14 40 3 -0.90 - 41 0 0 14 15 55 11 31 50.9 45 167 29 14 9 15 14 22 36 14 5 51 14 26 1 -0.90 - 40 0 0 14 2 37 11 31 53.4 45 168 30 13 55 58 14 9 17 13 52 34 14 12 42 -0.90 - 39 0 0 13 50 2 11 31 55.8 45 169 31 13 43 24 13 56 41 13 40 1 14 0 5 -0.90 - 38 0 0 13 38 10 11 31 58.3 46 170 32 13 31 32 13 44 47 13 28 10 13 48 11 -0.90 - 37 0 0 13 27 0 11 32 0.8 46 171 33 13 20 24 13 33 37 13 17 1 13 37 0 -0.90 - 36 0 0 13 16 33 11 32 3.2 46 172 34 13 9 57 13 23 9 13 6 35 13 26 32 -0.91 - 35 0 0 13 6 49 11 32 5.7 47 174 35 13 0 14 13 13 24 12 56 52 13 16 46 -0.91 - 34 0 0 12 57 47 11 32 8.2 47 175 36 12 51 13 13 4 22 12 47 52 13 7 44 -0.91 - 33 0 0 12 49 29 11 32 10.7 47 176 36 12 42 56 12 56 3 12 39 35 12 59 25 -0.91 - 32 0 0 12 41 53 11 32 13.2 47 178 37 12 35 21 12 48 27 12 32 0 12 51 48 -0.91 - 31 0 0 12 35 1 11 32 15.8 48 179 38 12 28 29 12 41 34 12 25 8 12 44 55 -0.91 - 30 0 0 12 28 51 11 32 18.3 48 180 39 12 22 19 12 35 23 12 18 59 12 38 44 -0.91 - 29 0 0 12 23 24 11 32 20.8 48 181 40 12 16 53 12 29 56 12 13 33 12 33 17 -0.91 - 28 0 0 12 18 41 11 32 23.3 48 183 41 12 12 10 12 25 12 12 8 50 12 28 33 -0.91 - 27 0 0 12 14 40 11 32 25.8 48 184 41 12 8 9 12 21 11 12 4 50 12 24 32 -0.91 - 26 0 0 12 11 22 11 32 28.4 48 185 42 12 4 52 12 17 53 12 1 32 12 21 13 -0.91 - 25 0 0 12 8 47 11 32 30.9 48 187 43 12 2 17 12 15 18 11 58 58 12 18 38 -0.91 - 24 0 0 12 6 55 11 32 33.4 48 188 44 12 0 25 12 13 26 11 57 6 12 16 46 -0.91 - 23 0 0 12 5 47 11 32 35.9 47 189 44 11 59 17 12 12 17 11 55 57 12 15 37 -0.91 - 22 0 0 12 5 21 11 32 38.4 47 190 45 11 58 51 12 11 51 11 55 32 12 15 11 -0.91 - 21 0 0 12 5 38 11 32 40.9 47 192 46 11 59 8 12 12 8 11 55 49 12 15 28 -0.91 - 20 0 0 12 6 38 11 32 43.4 47 193 46 12 0 8 12 13 8 11 56 49 12 16 28 -0.91 - 19 0 0 12 8 21 11 32 45.8 47 194 47 12 1 51 12 14 51 11 58 31 12 18 12 -0.91 - 18 0 0 12 10 47 11 32 48.3 46 195 47 12 4 17 12 17 18 12 0 57 12 20 38 -0.91 - 17 0 0 12 13 56 11 32 50.8 46 197 48 12 7 25 12 20 27 12 4 6 12 23 47 -0.91 - 16 0 0 12 17 47 11 32 53.2 46 198 49 12 11 17 12 24 19 12 7 57 12 27 39 -0.91 - 15 0 0 12 22 22 11 32 55.6 45 199 49 12 15 51 12 28 54 12 12 31 12 32 15 -0.91 - 14 0 0 12 27 40 11 32 58.0 45 200 50 12 21 8 12 34 12 12 17 48 12 37 33 -0.91 - 13 0 0 12 33 41 11 33 0.4 44 201 50 12 27 9 12 40 13 12 23 48 12 43 34 -0.91 - 12 0 0 12 40 24 11 33 2.8 44 202 51 12 33 51 12 46 57 12 30 31 12 50 19 -0.91 - 11 0 0 12 47 50 11 33 5.2 43 203 51 12 41 17 12 54 24 12 37 56 12 57 46 -0.91 - 10 0 0 12 55 59 11 33 7.5 43 204 51 12 49 26 13 2 34 12 46 5 13 5 56 -0.91 - 9 0 0 13 4 51 11 33 9.8 42 205 52 12 58 17 13 11 26 12 54 55 13 14 49 -0.91 - 8 0 0 13 14 26 11 33 12.1 42 206 52 13 7 51 13 21 2 13 4 29 13 24 25 -0.91 - 7 0 0 13 24 43 11 33 14.4 41 207 52 13 18 7 13 31 20 13 14 45 13 34 43 -0.91 - 6 0 0 13 35 44 11 33 16.7 41 208 52 13 29 7 13 42 21 13 25 44 13 45 45 -0.91 - 5 0 0 13 47 26 11 33 18.9 40 209 53 13 40 49 13 54 5 13 37 25 13 57 29 -0.91 - 4 0 0 13 59 52 11 33 21.1 39 210 53 13 53 13 14 6 31 13 49 49 14 9 56 -0.91 - 3 0 0 14 12 59 11 33 23.2 39 211 53 14 6 20 14 19 40 14 2 55 14 23 5 -0.91 - 2 0 0 14 26 50 11 33 25.4 38 211 53 14 20 9 14 33 31 14 16 44 14 36 57 -0.91 - 1 0 0 14 41 22 11 33 27.5 37 212 53 14 34 40 14 48 5 14 31 15 14 51 31 -0.91 0 0 0 14 56 37 11 33 29.6 36 213 53 14 49 54 15 3 21 14 46 28 15 6 48 -0.91 1 0 0 15 12 34 11 33 31.6 36 214 53 15 5 50 15 19 19 15 2 23 15 22 47 -0.91 2 0 0 15 29 13 11 33 33.6 35 214 53 15 22 28 15 36 0 15 19 0 15 39 28 -0.91 3 0 0 15 46 34 11 33 35.6 34 215 53 15 39 47 15 53 22 15 36 19 15 56 51 -0.91 4 0 0 16 4 37 11 33 37.5 33 216 53 15 57 48 16 11 26 15 54 20 16 14 56 -0.91 5 0 0 16 23 21 11 33 39.4 33 217 53 16 16 31 16 30 12 16 13 2 16 33 42 -0.91 6 0 0 16 42 47 11 33 41.3 32 217 52 16 35 56 16 49 39 16 32 25 16 53 10 -0.91 7 0 0 17 2 54 11 33 43.1 31 218 52 16 56 1 17 9 48 16 52 30 17 13 19 -0.91 8 0 0 17 23 42 11 33 44.9 30 218 52 17 16 47 17 30 37 17 13 16 17 34 10 -0.91 9 0 0 17 45 11 11 33 46.6 29 219 51 17 38 15 17 52 8 17 34 42 17 55 41 -0.91 10 0 0 18 7 20 11 33 48.3 28 220 51 18 0 22 18 14 19 17 56 49 18 17 53 -0.91 11 0 0 18 30 10 11 33 50.0 27 220 51 18 23 10 18 37 10 18 19 36 18 40 46 -0.91 12 0 0 18 53 39 11 33 51.6 26 221 50 18 46 38 19 0 42 18 43 2 19 4 18 -0.91 13 0 0 19 17 48 11 33 53.1 25 221 50 19 10 45 19 24 53 19 7 9 19 28 30 -0.91 14 0 0 19 42 37 11 33 54.6 25 222 49 19 35 32 19 49 43 19 31 54 19 53 21 -0.91 15 0 0 20 8 4 11 33 56.1 24 222 49 20 0 57 20 15 12 19 57 19 20 18 52 -0.91 16 0 0 20 34 10 11 33 57.5 23 223 48 20 27 1 20 41 20 20 23 22 20 45 1 -0.91 17 0 0 21 0 54 11 33 58.8 22 223 47 20 53 43 21 8 6 20 50 3 21 11 48 -0.92 18 0 0 21 28 16 11 34 0.1 21 224 47 21 21 2 21 35 30 21 17 21 21 39 12 -0.92 19 0 0 21 56 14 11 34 1.3 20 224 46 21 48 59 22 3 31 21 45 16 22 7 14 -0.92 20 0 0 22 24 49 11 34 2.5 19 225 45 22 17 32 22 32 8 22 13 48 22 35 53 -0.92 21 0 0 22 54 0 11 34 3.6 18 225 45 22 46 40 23 1 21 22 42 56 23 5 7 -0.92 22 0 0 23 23 47 11 34 4.7 17 226 44 23 16 24 23 31 10 23 12 39 23 34 57 -0.92 23 0 0 23 54 8 11 34 5.7 16 226 43 23 46 43 24 1 33 23 42 56 24 5 21 -0.92 24 0 0 24 25 3 11 34 6.6 15 227 42 24 17 36 24 32 30 24 13 48 24 36 20 -0.92 25 0 0 24 56 31 11 34 7.5 14 227 42 24 49 2 25 4 1 24 45 12 25 7 52 -0.92 26 0 0 25 28 31 11 34 8.3 13 228 41 25 21 0 25 36 4 25 17 9 25 39 56 -0.92 27 0 0 26 1 4 11 34 9.1 12 228 40 25 53 30 26 8 39 25 49 38 26 12 32 -0.92 28 0 0 26 34 7 11 34 9.8 11 229 39 26 26 30 26 41 44 26 22 37 26 45 39 -0.93 29 0 0 27 7 40 11 34 10.4 9 229 38 27 0 1 27 15 20 26 56 7 27 19 15 -0.93 30 0 0 27 41 42 11 34 10.9 8 230 37 27 34 0 27 49 24 27 30 5 27 53 21 -0.93 31 0 0 28 16 11 11 34 11.4 7 230 36 28 8 27 28 23 56 28 4 31 28 27 54 -0.93 32 0 0 28 51 8 11 34 11.9 6 231 36 28 43 21 28 58 55 28 39 23 29 2 55 -0.94 33 0 0 29 26 30 11 34 12.2 5 231 35 29 18 41 29 34 20 29 14 42 29 38 21 -0.95 34 0 0 30 2 17 11 34 12.5 4 232 34 29 54 26 30 10 9 29 50 25 30 14 12 -0.96 35 0 0 30 38 27 11 34 12.8 3 232 33 30 30 33 30 46 22 30 26 31 30 50 26 -0.98 36 0 0 31 15 0 11 34 12.9 2 233 32 31 7 3 31 22 57 31 3 0 31 27 2 -1.01 37 0 0 31 51 53 11 34 13.0 1 233 31 31 43 54 31 59 53 31 39 50 32 3 59 -1.11 38 0 0 32 29 6 11 34 13.0 0 234 30 32 21 5 .. .. .. 32 16 59 .. .. .. -6.47 Uncertainty in time = +/- 0 secs Prediction of 2022 Aug 13.9 Data for the target star ------------------------ * name: UCAC4 301-121701 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 13 08.5692 DE: -29 56 09.965 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 13 08.5692 DE: -29 56 09.965 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.6 * B mag [mag]: 13.7 * Diameter [mas]: 0.50 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (433) Eros asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.011 distance from Earth [AU]: 2.19460 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#659 date of fit: 2021 May 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): 0.004", 0.003", 120.4° remarks: * orbital elements for (433)Eros : Mean anomaly = 88.6526335017 deg Arg. of pericenter = 178.9303562245 deg Long. of node = 304.2880321008 deg Inclination = 10.8277071322 deg Eccentricity = 0.2227683466 Semimajor axis = 1.4581555858 AU Perihelion dist = 1.1333246769 AU Mag: H = 10.31, G = 0.46 Epoch of elements : MJD 59960.48084779 TDT (2023 Jan 16.4808) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#6592021May24,0.41,2023,1,16,11.540352,0.049113,0.670247,24.611895,-1.785884,-0.002673,-0.000235,-0.000002,0.000000 -30.1081,-29.9626,9.31,-20.94,False UCAC4 301-121701,17.21904689,-29.9361016,13.66,11.61,10.50,0.5,0,,17.24297253,-29.9625876,2.62,3.23,0,0,0 433,Eros,14.13,17.7,2.1946,0,0,7.590,-7.14,,0.2 0,88.3835,2023,1,16,178.9304,304.2880,10.8277,0.22277,1.45816,1.13332,10.43,5.0,0.15 1.256,0.0037,0.0026,120,0.0028,Known errors,-1.00,-1,-1,-1 20230116_121701,59804.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Aug 13, 20:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org