IOTA/IOTA-ES occultation update for (207) Hedda / TYC 6814-00941-1 event on 2023 Mar 24, 17:19 UT Visible from Japan Summary ------- On 2023 Mar 24 UT, the 58.8 km diameter asteroid (207) Hedda will occult a 10.0 mag star in the constellation Ophiuchus for observers along a path across Japan. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.21 mag to 14.20 mag (the magnitude of the asteroid) for at most 5.850 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 Mar 24, 17:11 - 2023 Mar 24, 17:27 * geocentric midpoint of event [JD]: 2460028.22197704 * magnitude of target star: 10.01 * magnitude drop [mag]: 4.21 * estimated maximum duration [s]: 5.850 * Moon: 11 % sunlit, 146° distance * Sun: 107° distance * rough path description: Japan Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 83 * 1 sigma uncertainty interval [path widths]: +/- 0.31 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.015) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.015", 99°) * approx speed of asteroid's shadow [km/s]: 10.0477 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6814-00941-1 by 207 Hedda on 2023 Mar 24 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 123 0 0 53 12 3 17 12 10.4 0 134 -33 52 41 27 .. .. .. 52 22 29 .. .. .. .... 124 0 0 52 37 2 17 12 10.5 1 135 -33 52 6 27 53 7 59 51 47 29 53 27 35 -0.30 125 0 0 52 1 34 17 12 10.8 2 136 -34 51 31 0 52 32 30 51 12 3 52 52 5 -0.61 126 0 0 51 25 41 17 12 11.3 3 136 -34 50 55 9 51 56 35 50 36 12 52 16 9 -0.72 127 0 0 50 49 23 17 12 12.0 4 137 -34 50 18 54 51 20 16 49 59 59 51 39 48 -0.78 128 0 0 50 12 43 17 12 13.0 4 138 -34 49 42 16 50 43 33 49 23 23 51 3 3 -0.82 129 0 0 49 35 42 17 12 14.1 5 139 -34 49 5 18 50 6 28 48 46 26 50 25 56 -0.84 130 0 0 48 58 20 17 12 15.5 6 139 -35 48 28 0 49 29 3 48 9 10 49 48 29 -0.86 131 0 0 48 20 40 17 12 17.2 7 140 -35 47 50 23 48 51 18 47 31 36 49 10 42 -0.87 132 0 0 47 42 43 17 12 19.1 8 141 -35 47 12 30 48 13 17 46 53 46 48 32 37 -0.88 133 0 0 47 4 30 17 12 21.2 9 142 -35 46 34 22 47 34 59 46 15 40 47 54 16 -0.89 134 0 0 46 26 3 17 12 23.6 10 142 -35 45 56 0 46 56 26 45 37 22 47 15 40 -0.90 135 0 0 45 47 24 17 12 26.3 11 143 -35 45 17 27 46 17 42 44 58 51 46 36 52 -0.90 136 0 0 45 8 34 17 12 29.2 12 144 -35 44 38 42 45 38 45 44 20 11 45 57 52 -0.91 137 0 0 44 29 35 17 12 32.4 13 145 -35 43 59 50 44 59 40 43 41 22 45 18 42 -0.91 138 0 0 43 50 29 17 12 35.9 14 146 -35 43 20 50 44 20 28 43 2 26 44 39 25 -0.92 139 0 0 43 11 17 17 12 39.6 15 146 -35 42 41 45 43 41 9 42 23 25 44 0 2 -0.92 140 0 0 42 32 2 17 12 43.6 16 147 -35 42 2 37 43 1 46 41 44 21 43 20 35 -0.92 141 0 0 41 52 45 17 12 47.9 17 148 -35 41 23 27 42 22 21 41 5 16 42 41 5 -0.93 142 0 0 41 13 28 17 12 52.5 18 149 -35 40 44 18 41 42 57 40 26 11 42 1 35 -0.93 143 0 0 40 34 12 17 12 57.4 18 149 -35 40 5 10 41 3 33 39 47 8 41 22 7 -0.93 144 0 0 39 55 0 17 13 2.5 19 150 -34 39 26 6 40 24 13 39 8 9 40 42 41 -0.93 145 0 0 39 15 53 17 13 8.0 20 151 -34 38 47 8 39 44 58 38 29 16 40 3 20 -0.94 146 0 0 38 36 53 17 13 13.7 21 152 -34 38 8 16 39 5 49 37 50 29 39 24 6 -0.94 147 0 0 37 58 2 17 13 19.6 22 153 -34 37 29 34 38 26 49 37 11 52 38 45 1 -0.94 148 0 0 37 19 22 17 13 25.9 23 153 -33 36 51 2 37 48 0 36 33 25 38 6 5 -0.94 149 0 0 36 40 54 17 13 32.4 24 154 -33 36 12 42 37 9 23 35 55 11 37 27 22 -0.94 150 0 0 36 2 40 17 13 39.2 25 155 -33 35 34 37 36 30 59 35 17 11 36 48 53 -0.95 151 0 0 35 24 41 17 13 46.3 26 156 -32 34 56 47 35 52 52 34 39 27 36 10 39 -0.95 152 0 0 34 47 0 17 13 53.6 27 157 -32 34 19 15 35 15 1 34 2 0 35 32 43 -0.95 153 0 0 34 9 37 17 14 1.2 28 158 -31 33 42 1 34 37 29 33 24 52 34 55 5 -0.95 154 0 0 33 32 35 17 14 9.0 29 158 -31 33 5 8 34 0 17 32 48 4 34 17 47 -0.95 155 0 0 32 55 54 17 14 17.0 30 159 -30 32 28 37 33 23 27 32 11 39 33 40 51 -0.95 156 0 0 32 19 37 17 14 25.3 30 160 -30 31 52 29 32 47 1 31 35 36 33 4 19 -0.96 157 0 0 31 43 44 17 14 33.8 31 161 -29 31 16 45 32 10 59 30 59 58 32 28 11 -0.96 158 0 0 31 8 18 17 14 42.6 32 162 -28 30 41 28 31 35 23 30 24 46 31 52 29 -0.96 159 0 0 30 33 19 17 14 51.5 33 163 -28 30 6 38 31 0 15 29 50 2 31 17 15 -0.96 160 0 0 29 58 49 17 15 0.7 34 164 -27 29 32 16 30 25 35 29 15 46 30 42 29 -0.96 161 0 0 29 24 48 17 15 10.0 35 165 -26 28 58 25 29 51 26 28 42 0 30 8 14 -0.96 162 0 0 28 51 19 17 15 19.5 35 166 -26 28 25 4 29 17 47 28 8 45 29 34 29 -0.97 163 0 0 28 18 21 17 15 29.3 36 167 -25 27 52 16 28 44 41 27 36 2 29 1 17 -0.97 164 0 0 27 45 57 17 15 39.2 37 168 -24 27 20 0 28 12 8 27 3 52 28 28 39 -0.97 165 0 0 27 14 7 17 15 49.2 38 169 -24 26 48 19 27 40 9 26 32 15 27 56 34 -0.97 166 0 0 26 42 53 17 15 59.4 38 170 -23 26 17 13 27 8 46 26 1 14 27 25 5 -0.97 167 0 0 26 12 14 17 16 9.8 39 172 -22 25 46 42 26 37 58 25 30 49 26 54 13 -0.97 168 0 0 25 42 12 17 16 20.3 39 173 -21 25 16 49 26 7 48 25 1 1 26 23 57 -0.97 169 0 0 25 12 48 17 16 30.9 40 174 -20 24 47 33 25 38 16 24 31 50 25 54 20 -0.98 170 0 0 24 44 3 17 16 41.6 41 175 -20 24 18 56 25 9 23 24 3 17 25 25 21 -0.98 171 0 0 24 15 57 17 16 52.5 41 176 -19 23 50 57 24 41 9 23 35 24 24 57 2 -0.98 172 0 0 23 48 31 17 17 3.4 42 178 -18 23 23 39 24 13 35 23 8 10 24 29 23 -0.98 173 0 0 23 21 45 17 17 14.4 42 179 -17 22 57 0 23 46 41 22 41 36 24 2 25 -0.98 174 0 0 22 55 40 17 17 25.5 43 180 -16 22 31 3 23 20 29 22 15 43 23 36 8 -0.98 175 0 0 22 30 17 17 17 36.7 43 181 -15 22 5 47 22 54 59 21 50 32 23 10 33 -0.98 176 0 0 22 5 37 17 17 48.0 43 183 -14 21 41 13 22 30 11 21 26 2 22 45 41 -0.98 177 0 0 21 41 38 17 17 59.3 44 184 -13 21 17 22 22 6 6 21 2 15 22 21 31 -0.99 178 0 0 21 18 23 17 18 10.7 44 185 -12 20 54 13 21 42 44 20 39 11 21 58 5 -0.99 179 0 0 20 55 52 17 18 22.1 44 187 -12 20 31 48 21 20 6 20 16 49 21 35 23 -0.99 180 0 0 20 34 4 17 18 33.5 45 188 -11 20 10 7 20 58 12 19 55 11 21 13 24 -0.99 -179 0 0 20 13 0 17 18 44.9 45 189 -10 19 49 9 20 37 2 19 34 17 20 52 11 -0.99 -178 0 0 19 52 41 17 18 56.4 45 191 -9 19 28 55 20 16 37 19 14 8 20 31 42 -0.99 -177 0 0 19 33 6 17 19 7.9 45 192 -8 19 9 26 19 56 56 18 54 42 20 11 58 -0.99 -176 0 0 19 14 16 17 19 19.3 45 194 -7 18 50 42 19 38 1 18 36 1 19 52 59 -0.99 -175 0 0 18 56 12 17 19 30.8 45 195 -6 18 32 43 19 19 51 18 18 5 19 34 45 -0.99 -174 0 0 18 38 53 17 19 42.2 45 196 -5 18 15 28 19 2 27 18 0 54 19 17 18 -0.99 -173 0 0 18 22 19 17 19 53.7 45 198 -4 17 58 59 18 45 48 17 44 28 19 0 36 -1.00 -172 0 0 18 6 31 17 20 5.0 45 199 -3 17 43 16 18 29 55 17 28 47 18 44 40 -1.00 -171 0 0 17 51 28 17 20 16.4 45 200 -2 17 28 18 18 14 48 17 13 52 18 29 30 -1.00 -170 0 0 17 37 12 17 20 27.7 45 202 -1 17 14 6 18 0 28 16 59 42 18 15 7 -1.00 -169 0 0 17 23 41 17 20 39.0 45 203 0 17 0 39 17 46 53 16 46 18 18 1 30 -1.00 -168 0 0 17 10 57 17 20 50.2 44 204 1 16 47 58 17 34 5 16 33 39 17 48 39 -1.00 -167 0 0 16 58 58 17 21 1.3 44 206 2 16 36 3 17 22 3 16 21 47 17 36 35 -1.00 -166 0 0 16 47 46 17 21 12.4 44 207 3 16 24 55 17 10 47 16 10 40 17 25 17 -1.00 -165 0 0 16 37 20 17 21 23.4 44 208 4 16 14 32 17 0 18 16 0 19 17 14 45 -1.00 -164 0 0 16 27 40 17 21 34.3 43 209 5 16 4 55 16 50 35 15 50 44 17 5 1 -1.00 -163 0 0 16 18 46 17 21 45.1 43 211 6 15 56 3 16 41 38 15 41 54 16 56 2 -1.00 -162 0 0 16 10 39 17 21 55.8 42 212 7 15 47 58 16 33 28 15 33 51 16 47 50 -1.00 -161 0 0 16 3 17 17 22 6.4 42 213 8 15 40 39 16 26 4 15 26 33 16 40 25 -1.00 -160 0 0 15 56 42 17 22 17.0 42 214 9 15 34 6 16 19 27 15 20 1 16 33 46 -1.00 -159 0 0 15 50 53 17 22 27.4 41 215 10 15 28 19 16 13 36 15 14 15 16 27 54 -1.00 -158 0 0 15 45 50 17 22 37.7 41 216 11 15 23 17 16 8 31 15 9 15 16 22 48 -1.00 -157 0 0 15 41 32 17 22 47.8 40 217 12 15 19 2 16 4 12 15 5 0 16 18 29 -1.00 -156 0 0 15 38 1 17 22 57.9 39 218 13 15 15 32 16 0 40 15 1 31 16 14 55 -1.00 -155 0 0 15 35 16 17 23 7.8 39 219 14 15 12 48 15 57 54 14 58 47 16 12 9 -1.00 -154 0 0 15 33 17 17 23 17.6 38 220 15 15 10 49 15 55 53 14 56 49 16 10 8 -1.00 -153 0 0 15 32 3 17 23 27.2 38 221 16 15 9 36 15 54 39 14 55 37 16 8 53 -1.00 -152 0 0 15 31 36 17 23 36.7 37 222 17 15 9 9 15 54 11 14 55 10 16 8 25 -1.00 -151 0 0 15 31 53 17 23 46.1 36 222 18 15 9 27 15 54 29 14 55 28 16 8 42 -1.00 -150 0 0 15 32 57 17 23 55.3 36 223 19 15 10 30 15 55 32 14 56 31 16 9 46 -1.00 -149 0 0 15 34 46 17 24 4.3 35 224 20 15 12 19 15 57 21 14 58 20 16 11 35 -1.00 -148 0 0 15 37 20 17 24 13.2 34 225 21 15 14 53 15 59 56 15 0 53 16 14 10 -1.00 -147 0 0 15 40 39 17 24 21.9 33 225 22 15 18 11 16 3 16 15 4 12 16 17 30 -1.00 -146 0 0 15 44 44 17 24 30.4 33 226 23 15 22 15 16 7 21 15 8 15 16 21 36 -1.00 -145 0 0 15 49 33 17 24 38.7 32 227 24 15 27 4 16 12 12 15 13 3 16 26 27 -1.00 -144 0 0 15 55 8 17 24 46.9 31 227 25 15 32 37 16 17 48 15 18 35 16 32 4 -1.00 -143 0 0 16 1 27 17 24 54.9 30 228 26 15 38 55 16 24 8 15 24 53 16 38 26 -1.00 -142 0 0 16 8 31 17 25 2.6 29 229 27 15 45 58 16 31 14 15 31 54 16 45 33 -1.00 -141 0 0 16 16 20 17 25 10.2 29 229 28 15 53 44 16 39 5 15 39 40 16 53 24 -1.00 -140 0 0 16 24 53 17 25 17.6 28 230 29 16 2 16 16 47 40 15 48 9 17 2 1 -1.00 -139 0 0 16 34 10 17 25 24.8 27 230 30 16 11 31 16 56 59 15 57 23 17 11 22 -1.00 -138 0 0 16 44 12 17 25 31.8 26 231 31 16 21 30 17 7 3 16 7 21 17 21 27 -1.00 -137 0 0 16 54 57 17 25 38.5 25 232 32 16 32 12 17 17 51 16 18 2 17 32 17 -1.00 -136 0 0 17 6 26 17 25 45.1 24 232 33 16 43 38 17 29 23 16 29 26 17 43 50 -1.00 -135 0 0 17 18 39 17 25 51.4 23 233 34 16 55 48 17 41 39 16 41 34 17 56 8 -1.00 -134 0 0 17 31 35 17 25 57.5 23 233 35 17 8 41 17 54 38 16 54 25 18 9 9 -1.00 -133 0 0 17 45 14 17 26 3.4 22 233 35 17 22 17 18 8 21 17 7 59 18 22 54 -1.00 -132 0 0 17 59 36 17 26 9.1 21 234 36 17 36 35 18 22 46 17 22 15 18 37 22 -1.00 -131 0 0 18 14 41 17 26 14.5 20 234 37 17 51 36 18 37 55 17 37 14 18 52 33 -1.00 -130 0 0 18 30 28 17 26 19.6 19 235 38 18 7 20 18 53 46 17 52 55 19 8 27 -1.00 -129 0 0 18 46 58 17 26 24.6 18 235 39 18 23 45 19 10 20 18 9 17 19 25 4 -1.00 -128 0 0 19 4 9 17 26 29.3 17 236 40 18 40 52 19 27 36 18 26 22 19 42 22 -1.00 -127 0 0 19 22 2 17 26 33.7 16 236 41 18 58 41 19 45 34 18 44 8 20 0 23 -1.00 -126 0 0 19 40 37 17 26 37.9 15 237 42 19 17 11 20 4 13 19 2 35 20 19 5 -1.00 -125 0 0 19 59 53 17 26 41.8 14 237 42 19 36 22 20 23 34 19 21 43 20 38 29 -1.00 -124 0 0 20 19 49 17 26 45.5 13 237 43 19 56 13 20 43 35 19 41 31 20 58 34 -1.00 -123 0 0 20 40 25 17 26 48.9 12 238 44 20 16 44 21 4 17 20 1 59 21 19 19 -1.00 -122 0 0 21 1 42 17 26 52.0 11 238 45 20 37 55 21 25 39 20 23 7 21 40 45 -1.00 -121 0 0 21 23 38 17 26 54.9 10 239 46 20 59 46 21 47 41 20 44 54 22 2 50 -1.00 -120 0 0 21 46 13 17 26 57.5 9 239 46 21 22 15 22 10 22 21 7 20 22 25 35 -1.01 -119 0 0 22 9 27 17 26 59.8 8 239 47 21 45 24 22 33 42 21 30 24 22 48 59 -1.01 -118 0 0 22 33 20 17 27 1.9 7 240 48 22 9 10 22 57 41 21 54 7 23 13 2 -1.02 -117 0 0 22 57 50 17 27 3.7 6 240 48 22 33 34 23 22 17 22 18 27 23 37 42 -1.02 -116 0 0 23 22 57 17 27 5.2 5 241 49 22 58 34 23 47 31 22 43 24 24 3 0 -1.03 -115 0 0 23 48 41 17 27 6.4 4 241 50 23 24 12 24 13 21 23 8 57 24 28 55 -1.04 -114 0 0 24 15 1 17 27 7.4 3 241 50 23 50 25 24 39 48 23 35 6 24 55 26 -1.07 -113 0 0 24 41 56 17 27 8.0 2 242 51 24 17 14 25 6 51 24 1 51 25 22 33 -1.12 -112 0 0 25 9 27 17 27 8.4 1 242 51 24 44 37 25 34 28 24 29 10 25 50 15 -1.27 -111 0 0 .. .. .... .. .. .. .. .. .. 25 12 35 .. .. .. 24 57 3 .. .. .. .... Uncertainty in time = +/- 3 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 6814-00941-1 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 59 26.6819 DE: -24 32 48.886 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 59 26.6820 DE: -24 32 48.886 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 10.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (207) Hedda asteroid class: approx. diameter [km]: 59 approx. diameter ["]: 0.047 distance from Earth [AU]: 1.70730 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#71 date of fit: 2023 Feb 07 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): 0.024", 0.015", 99.014° remarks: * orbital elements for (207)Hedda : Mean anomaly = 8.9814137001 deg Arg. of pericenter = 192.1858808855 deg Long. of node = 29.1422711885 deg Inclination = 3.8023839924 deg Eccentricity = 0.0295629459 Semimajor axis = 2.2840354793 AU Perihelion dist = 2.2165126620 AU Mag: H = 10.13, G = 0.15 Epoch of elements : MJD 60027.72194444 TDT (2023 Mar 24.7219) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#712023Feb07,5.85,2023,3,24,17.327449,0.202171,0.675213,5.433189,-1.625742,-0.005250,0.000589,0.000001,0.000000 173.3791,-24.5822,-78.34,1.51,False TYC 6814-00941-1,16.99074496,-24.5469128,0.00,10.01,0.00,0.0,0,,17.01428684,-24.5821533,4.21,0.00,0,0,0 207,Hedda,14.20,58.8,1.7073,0,0,2.051,-8.37,,3.2,0 0,8.7753,2023,3,24,192.1859,29.1423,3.8024,0.02956,2.28404,2.21651,10.14,5.0,0.15 1.313,0.0237,0.0147,99,0.0149,Known errors,-1.00,-1,-1,-1 20230324_0941-1,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:52 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org