IOTA/IOTA-ES occultation update for (206) Hersilia / TYC 6241-00632-1 event on 2023 Mar 05, 12:37 UT Visible from NUSA Summary ------- On 2023 Mar 05 UT, the 99 km diameter asteroid (206) Hersilia will occult a 12.1 mag star in the constellation Ophiuchus for observers along a path across NUSA. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.33 mag to 14.31 mag (the magnitude of the asteroid) for at most 5.110 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: 100 * date and approx. time of event: 2023 Mar 05, 12:34 - 2023 Mar 05, 12:39 * geocentric midpoint of event [JD]: 2460009.02597412 * magnitude of target star: 12.12 * magnitude drop [mag]: 2.33 * estimated maximum duration [s]: 5.110 * Moon: 96 % sunlit, 116° distance * Sun: 85° distance * rough path description: NUSA The occultation path -------------------- * approximate projected width [km]: 244 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.003", 93°) * approx speed of asteroid's shadow [km/s]: 19.3556 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6241-00632-1 by 206 Hersilia on 2023 Mar 5 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 -147 0 0 .. .. .... .. .. .. .. .. .. 58 52 46 .. .. .. 58 41 37 .. .. .. .... -146 0 0 59 51 54 12 35 12.4 0 131 -28 58 27 20 .. .. .. 58 16 16 .. .. .. .... -145 0 0 59 25 56 12 35 12.4 1 131 -28 58 2 7 .. .. .. 57 51 9 .. .. .. -0.63 -144 0 0 59 0 15 12 35 12.6 1 132 -28 57 37 10 60 29 45 57 26 18 60 42 31 -1.44 -143 0 0 58 34 51 12 35 12.9 2 133 -28 57 12 30 60 3 26 57 1 43 60 16 3 -1.71 -142 0 0 58 9 45 12 35 13.2 3 134 -28 56 48 7 59 37 27 56 37 25 59 49 56 -1.85 -141 0 0 57 44 58 12 35 13.7 3 135 -28 56 24 2 59 11 48 56 13 25 59 24 9 -1.94 -140 0 0 57 20 31 12 35 14.3 4 136 -28 56 0 16 58 46 30 55 49 44 58 58 43 -1.99 -139 0 0 56 56 25 12 35 15.1 5 137 -27 55 36 50 58 21 35 55 26 23 58 33 40 -2.03 -138 0 0 56 32 40 12 35 15.9 5 137 -27 55 13 44 57 57 2 55 3 22 58 9 0 -2.06 -137 0 0 56 9 18 12 35 16.9 6 138 -27 54 51 0 57 32 54 54 40 42 57 44 44 -2.09 -136 0 0 55 46 19 12 35 17.9 7 139 -27 54 28 38 57 9 9 54 18 25 57 20 53 -2.11 -135 0 0 55 23 43 12 35 19.1 7 140 -26 54 6 39 56 45 50 53 56 30 56 57 27 -2.12 -134 0 0 55 1 33 12 35 20.4 8 141 -26 53 45 3 56 22 57 53 34 59 56 34 28 -2.14 -133 0 0 54 39 47 12 35 21.8 9 142 -26 53 23 52 56 0 30 53 13 52 56 11 55 -2.15 -132 0 0 54 18 28 12 35 23.3 9 143 -25 53 3 5 55 38 31 52 53 9 55 49 49 -2.16 -131 0 0 53 57 34 12 35 25.0 10 143 -25 52 42 45 55 16 59 52 32 53 55 28 11 -2.17 -130 0 0 53 37 8 12 35 26.7 11 144 -25 52 22 50 54 55 56 52 13 1 55 7 2 -2.18 -129 0 0 53 17 10 12 35 28.5 11 145 -24 52 3 21 54 35 21 51 53 37 54 46 23 -2.18 -128 0 0 52 57 40 12 35 30.5 12 146 -24 51 44 20 54 15 16 51 34 40 54 26 12 -2.19 -127 0 0 52 38 38 12 35 32.5 12 147 -23 51 25 47 53 55 41 51 16 10 54 6 32 -2.20 -126 0 0 52 20 6 12 35 34.7 13 148 -23 51 7 42 53 36 36 50 58 8 53 47 23 -2.20 -125 0 0 52 2 3 12 35 36.9 14 149 -22 50 50 6 53 18 3 50 40 35 53 28 44 -2.21 -124 0 0 51 44 30 12 35 39.3 14 150 -22 50 32 58 53 0 0 50 23 31 53 10 37 -2.21 -123 0 0 51 27 29 12 35 41.8 15 150 -21 50 16 21 52 42 29 50 6 57 52 53 2 -2.21 -122 0 0 51 10 58 12 35 44.3 15 151 -21 50 0 14 52 25 31 49 50 52 52 35 59 -2.22 -121 0 0 50 54 58 12 35 46.9 16 152 -20 49 44 37 52 9 5 49 35 18 52 19 29 -2.22 -120 0 0 50 39 30 12 35 49.7 16 153 -20 49 29 31 51 53 11 49 20 15 52 3 32 -2.23 -119 0 0 50 24 35 12 35 52.5 17 154 -19 49 14 56 51 37 51 49 5 43 51 48 8 -2.23 -118 0 0 50 10 11 12 35 55.4 17 155 -19 49 0 53 51 23 5 48 51 42 51 33 18 -2.23 -117 0 0 49 56 21 12 35 58.3 18 156 -18 48 47 21 51 8 52 48 38 13 51 19 2 -2.24 -116 0 0 49 43 4 12 36 1.4 18 157 -17 48 34 22 50 55 14 48 25 16 51 5 21 -2.24 -115 0 0 49 30 20 12 36 4.5 19 158 -17 48 21 56 50 42 10 48 12 52 50 52 14 -2.24 -114 0 0 49 18 10 12 36 7.7 19 159 -16 48 10 2 50 29 41 48 1 0 50 39 42 -2.24 -113 0 0 49 6 33 12 36 11.0 20 160 -16 47 58 41 50 17 46 47 49 42 50 27 45 -2.25 -112 0 0 48 55 31 12 36 14.3 20 161 -15 47 47 54 50 6 27 47 38 56 50 16 23 -2.25 -111 0 0 48 45 4 12 36 17.7 20 162 -14 47 37 41 49 55 43 47 28 44 50 5 37 -2.25 -110 0 0 48 35 11 12 36 21.2 21 163 -14 47 28 1 49 45 35 47 19 6 49 55 26 -2.25 -109 0 0 48 25 53 12 36 24.7 21 164 -13 47 18 55 49 36 3 47 10 2 49 45 52 -2.26 -108 0 0 48 17 10 12 36 28.3 21 165 -12 47 10 23 49 27 6 47 1 32 49 36 54 -2.26 -107 0 0 48 9 2 12 36 31.9 22 166 -12 47 2 26 49 18 46 46 53 36 49 28 32 -2.26 -106 0 0 48 1 29 12 36 35.6 22 167 -11 46 55 3 49 11 2 46 46 14 49 20 46 -2.26 -105 0 0 47 54 32 12 36 39.3 22 168 -10 46 48 15 49 3 55 46 39 27 49 13 37 -2.26 -104 0 0 47 48 10 12 36 43.1 22 169 -10 46 42 2 48 57 24 46 33 15 49 7 5 -2.27 -103 0 0 47 42 25 12 36 46.9 23 170 -9 46 36 24 48 51 30 46 27 38 49 1 9 -2.27 -102 0 0 47 37 15 12 36 50.7 23 171 -8 46 31 21 48 46 12 46 22 36 48 55 50 -2.27 -101 0 0 47 32 41 12 36 54.5 23 172 -8 46 26 53 48 41 32 46 18 9 48 51 9 -2.27 -100 0 0 47 28 43 12 36 58.4 23 173 -7 46 23 0 48 37 28 46 14 16 48 47 4 -2.27 - 99 0 0 47 25 22 12 37 2.3 23 174 -6 46 19 43 48 34 1 46 11 0 48 43 37 -2.27 - 98 0 0 47 22 36 12 37 6.3 23 175 -6 46 17 1 48 31 12 46 8 18 48 40 47 -2.27 - 97 0 0 47 20 27 12 37 10.2 24 176 -5 46 14 55 48 29 0 46 6 12 48 38 34 -2.28 - 96 0 0 47 18 54 12 37 14.2 24 177 -4 46 13 24 48 27 24 46 4 41 48 36 59 -2.28 - 95 0 0 47 17 58 12 37 18.1 24 178 -3 46 12 28 48 26 26 46 3 46 48 36 1 -2.28 - 94 0 0 47 17 37 12 37 22.1 24 179 -3 46 12 8 48 26 6 46 3 26 48 35 40 -2.28 - 93 0 0 47 17 54 12 37 26.1 24 180 -2 46 12 24 48 26 22 46 3 42 48 35 56 -2.28 - 92 0 0 47 18 46 12 37 30.0 24 181 -1 46 13 15 48 27 16 46 4 33 48 36 50 -2.28 - 91 0 0 47 20 15 12 37 34.0 24 182 -1 46 14 42 48 28 47 46 6 0 48 38 22 -2.28 - 90 0 0 47 22 20 12 37 38.0 24 183 0 46 16 44 48 30 55 46 8 2 48 40 30 -2.28 - 89 0 0 47 25 1 12 37 41.9 23 184 1 46 19 22 48 33 40 46 10 39 48 43 16 -2.28 - 88 0 0 47 28 18 12 37 45.8 23 185 1 46 22 35 48 37 3 46 13 52 48 46 39 -2.28 - 87 0 0 47 32 12 12 37 49.7 23 186 2 46 26 24 48 41 2 46 17 40 48 50 39 -2.29 - 86 0 0 47 36 42 12 37 53.6 23 187 3 46 30 48 48 45 38 46 22 3 48 55 17 -2.29 - 85 0 0 47 41 47 12 37 57.5 23 188 3 46 35 47 48 50 51 46 27 1 49 0 31 -2.29 - 84 0 0 47 47 29 12 38 1.3 23 189 4 46 41 21 48 56 41 46 32 34 49 6 22 -2.29 - 83 0 0 47 53 46 12 38 5.1 22 191 5 46 47 30 49 3 8 46 38 42 49 12 50 -2.29 - 82 0 0 48 0 39 12 38 8.9 22 192 5 46 54 14 49 10 11 46 45 25 49 19 55 -2.29 - 81 0 0 48 8 8 12 38 12.6 22 193 6 47 1 33 49 17 51 46 52 43 49 27 36 -2.29 - 80 0 0 48 16 11 12 38 16.3 22 194 6 47 9 26 49 26 7 47 0 35 49 35 54 -2.29 - 79 0 0 48 24 51 12 38 19.9 21 195 7 47 17 54 49 35 0 47 9 1 49 44 49 -2.29 - 78 0 0 48 34 5 12 38 23.5 21 196 8 47 26 56 49 44 28 47 18 1 49 54 19 -2.29 - 77 0 0 48 43 54 12 38 27.0 21 197 8 47 36 32 49 54 32 47 27 35 50 4 25 -2.29 - 76 0 0 48 54 17 12 38 30.5 20 198 9 47 46 41 50 5 12 47 37 43 50 15 7 -2.29 - 75 0 0 49 5 16 12 38 33.9 20 199 9 47 57 25 50 16 27 47 48 25 50 26 25 -2.29 - 74 0 0 49 16 48 12 38 37.2 20 199 10 48 8 42 50 28 17 47 59 40 50 38 18 -2.29 - 73 0 0 49 28 54 12 38 40.5 19 200 10 48 20 31 50 40 42 48 11 28 50 50 46 -2.29 - 72 0 0 49 41 34 12 38 43.7 19 201 11 48 32 54 50 53 42 48 23 48 51 3 49 -2.29 - 71 0 0 49 54 48 12 38 46.8 18 202 11 48 45 50 51 7 17 48 36 41 51 17 27 -2.29 - 70 0 0 50 8 34 12 38 49.9 18 203 12 48 59 17 51 21 26 48 50 7 51 31 39 -2.29 - 69 0 0 50 22 54 12 38 52.9 17 204 12 49 13 17 51 36 8 49 4 4 51 46 25 -2.30 - 68 0 0 50 37 46 12 38 55.8 17 205 13 49 27 48 51 51 25 49 18 32 52 1 45 -2.30 - 67 0 0 50 53 10 12 38 58.6 16 206 13 49 42 51 52 7 14 49 33 32 52 17 38 -2.30 - 66 0 0 51 9 6 12 39 1.3 16 207 14 49 58 24 52 23 37 49 49 3 52 34 5 -2.30 - 65 0 0 51 25 34 12 39 3.9 15 208 14 50 14 29 52 40 32 50 5 4 52 51 4 -2.30 - 64 0 0 51 42 33 12 39 6.5 15 209 15 50 31 3 52 58 0 50 21 36 53 8 36 -2.30 - 63 0 0 52 0 2 12 39 8.9 14 210 15 50 48 7 53 15 59 50 38 36 53 26 40 -2.30 - 62 0 0 52 18 1 12 39 11.3 14 211 15 51 5 40 53 34 30 50 56 6 53 45 15 -2.30 - 61 0 0 52 36 31 12 39 13.6 13 212 16 51 23 42 53 53 31 51 14 5 54 4 22 -2.30 - 60 0 0 52 55 29 12 39 15.7 12 212 16 51 42 12 54 13 3 51 32 32 54 23 59 -2.30 - 59 0 0 53 14 57 12 39 17.8 12 213 16 52 1 10 54 33 5 51 51 26 54 44 6 -2.31 - 58 0 0 53 34 52 12 39 19.7 11 214 17 52 20 36 54 53 37 52 10 48 55 4 43 -2.31 - 57 0 0 53 55 16 12 39 21.6 11 215 17 52 40 28 55 14 37 52 30 36 55 25 49 -2.31 - 56 0 0 54 16 6 12 39 23.3 10 216 17 53 0 47 55 36 6 52 50 51 55 47 24 -2.31 - 55 0 0 54 37 23 12 39 24.9 9 217 17 53 21 31 55 58 3 53 11 31 56 9 26 -2.31 - 54 0 0 54 59 6 12 39 26.5 9 218 18 53 42 40 56 20 27 53 32 36 56 31 57 -2.32 - 53 0 0 55 21 14 12 39 27.9 8 218 18 54 4 13 56 43 17 53 54 5 56 54 54 -2.32 - 52 0 0 55 43 47 12 39 29.2 7 219 18 54 26 10 57 6 34 54 15 57 57 18 17 -2.33 - 51 0 0 56 6 44 12 39 30.4 7 220 18 54 48 30 57 30 16 54 38 13 57 42 6 -2.33 - 50 0 0 56 30 4 12 39 31.4 6 221 18 55 11 12 57 54 23 55 0 50 58 6 20 -2.34 - 49 0 0 56 53 47 12 39 32.4 5 222 18 55 34 16 58 18 53 55 23 49 58 30 58 -2.35 - 48 0 0 57 17 51 12 39 33.2 5 223 19 55 57 40 58 43 47 55 47 9 58 55 59 -2.36 - 47 0 0 57 42 17 12 39 34.0 4 224 19 56 21 25 59 9 2 56 10 48 59 21 23 -2.37 - 46 0 0 58 7 2 12 39 34.6 3 224 19 56 45 28 59 34 40 56 34 46 59 47 8 -2.39 - 45 0 0 58 32 7 12 39 35.1 3 225 19 57 9 50 60 0 38 56 59 3 60 13 14 -2.42 - 44 0 0 58 57 29 12 39 35.5 2 226 19 57 34 29 60 26 55 57 23 37 60 39 40 -2.46 - 43 0 0 59 23 10 12 39 35.7 1 227 19 57 59 25 60 53 32 57 48 27 61 6 26 -2.56 - 42 0 0 59 49 6 12 39 35.9 1 228 19 58 24 36 .. .. .. 58 13 33 .. .. .. -2.81 - 41 0 0 60 15 18 12 39 35.9 0 229 19 58 50 2 .. .. .. 58 38 53 .. .. .. -8.64 - 40 0 0 .. .. .... .. .. .. .. .. .. 59 15 41 .. .. .. 59 4 27 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 6241-00632-1 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 15 39.3258 DE: -19 08 41.104 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 15 39.3259 DE: -19 08 41.104 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (206) Hersilia asteroid class: approx. diameter [km]: 99 approx. diameter ["]: 0.050 distance from Earth [AU]: 2.74630 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#118 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): 0.013", 0.003", 92.813° remarks: * orbital elements for (206)Hersilia : Mean anomaly = 149.2057488874 deg Arg. of pericenter = 302.6023710688 deg Long. of node = 145.0352523734 deg Inclination = 3.7797351092 deg Eccentricity = 0.0395430567 Semimajor axis = 2.7407711981 AU Perihelion dist = 2.6323927272 AU Mag: H = 8.83, G = 0.15 Epoch of elements : MJD 60008.52597222 TDT (2023 Mar 05.5260) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1182023Feb07,5.11,2023,3,5,12.623379,-0.004460,0.913823,10.924740,0.052916,-0.005794,0.000465,0.000000,0.000000 -93.1026,-19.1715,-6.47,-6.04,False TYC 6241-00632-1,17.26092382,-19.1447509,0.00,12.12,0.00,0.0,0,,17.28342058,-19.1714768,2.32,0.00,0,0,0 206,Hersilia,14.31,99.0,2.7463,0,0,2.469,0.17,,5.2,0 0,149.0915,2023,3,5,302.6024,145.0353,3.7797,0.03954,2.74077,2.63239,8.84,5.0,0.15 1.068,0.0130,0.0033,93,0.0034,Known errors,-1.00,-1,-1,-1 20230305_0632-1,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:44 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org