IOTA/IOTA-ES occultation update for (44) Nysa / HIP 78753 event on 2023 May 16, 18:08 UT Visible from Russia Summary ------- On 2023 May 16 UT, the 74.5 km diameter asteroid (44) Nysa will occult a 8.1 mag star in the constellation Scorpius for observers along a path across Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.38 mag to 10.39 mag (the magnitude of the asteroid) for at most 6.420 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 May 16, 18:03 - 2023 May 16, 18:12 * geocentric midpoint of event [JD]: 2460081.25560745 * magnitude of target star: 8.14 * magnitude drop [mag]: 2.38 * estimated maximum duration [s]: 6.420 * Moon: 10 % sunlit, 136° distance * Sun: 171° distance * rough path description: Russia The occultation path -------------------- * approximate projected width [km]: 174 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.032, +/- 0.021) * 1 sigma uncertainty ellipse (major, minor, PA): (0.032", 0.021", 103°) * approx speed of asteroid's shadow [km/s]: 11.6029 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 78753 by 44 Nysa on 2023 May 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 47 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 68 5 38 .... 48 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 68 25 0 .. .. .. 67 43 43 .... 49 0 0 69 10 30 18 11 56.3 0 137 2 .. .. .. 68 2 45 .. .. .. 67 21 34 .... 50 0 0 68 47 48 18 11 56.3 1 137 2 .. .. .. 67 40 16 .. .. .. 66 59 13 -0.74 51 0 0 68 24 52 18 11 56.1 1 138 1 69 36 30 67 17 35 .. .. .. 66 36 40 -1.39 52 0 0 68 1 44 18 11 55.8 2 139 1 69 13 3 66 54 42 70 1 8 66 13 56 -1.64 53 0 0 67 38 25 18 11 55.4 2 140 0 68 49 24 66 31 40 69 37 13 65 51 3 -1.76 54 0 0 67 14 55 18 11 54.9 3 141 0 68 25 32 66 8 27 69 13 6 65 28 1 -1.84 55 0 0 66 51 15 18 11 54.3 3 142 -1 68 1 31 65 45 7 68 48 47 65 4 50 -1.90 56 0 0 66 27 27 18 11 53.5 4 143 -2 67 37 20 65 21 38 68 24 19 64 41 33 -1.93 57 0 0 66 3 32 18 11 52.6 4 144 -2 67 13 0 64 58 4 67 59 41 64 18 9 -1.96 58 0 0 65 39 31 18 11 51.5 5 145 -3 66 48 34 64 34 23 67 34 57 63 54 41 -1.99 59 0 0 65 15 25 18 11 50.3 6 146 -3 66 24 3 64 10 39 67 10 6 63 31 8 -2.00 60 0 0 64 51 15 18 11 49.0 6 147 -4 65 59 26 63 46 51 66 45 10 63 7 33 -2.02 61 0 0 64 27 1 18 11 47.5 7 148 -4 65 34 46 63 23 0 66 20 11 62 43 55 -2.03 62 0 0 64 2 47 18 11 45.9 7 149 -5 65 10 4 62 59 9 65 55 8 62 20 17 -2.04 63 0 0 63 38 31 18 11 44.2 8 149 -5 64 45 21 62 35 17 65 30 4 61 56 38 -2.05 64 0 0 63 14 16 18 11 42.3 8 150 -6 64 20 38 62 11 25 65 5 1 61 33 0 -2.06 65 0 0 62 50 2 18 11 40.2 9 151 -6 63 55 56 61 47 36 64 39 58 61 9 24 -2.07 66 0 0 62 25 51 18 11 38.0 10 152 -7 63 31 16 61 23 49 64 14 57 60 45 50 -2.07 67 0 0 62 1 43 18 11 35.6 10 153 -8 63 6 40 61 0 5 63 50 0 60 22 21 -2.08 68 0 0 61 37 40 18 11 33.1 11 154 -8 62 42 8 60 36 26 63 25 7 59 58 56 -2.09 69 0 0 61 13 42 18 11 30.5 11 155 -9 62 17 42 60 12 53 63 0 20 59 35 37 -2.09 70 0 0 60 49 51 18 11 27.6 12 156 -9 61 53 22 59 49 26 62 35 39 59 12 24 -2.09 71 0 0 60 26 7 18 11 24.7 12 157 -10 61 29 9 59 26 7 62 11 7 58 49 19 -2.10 72 0 0 60 2 32 18 11 21.6 13 158 -10 61 5 6 59 2 56 61 46 42 58 26 22 -2.10 73 0 0 59 39 5 18 11 18.3 13 159 -11 60 41 11 58 39 54 61 22 28 58 3 34 -2.10 74 0 0 59 15 49 18 11 14.9 14 160 -11 60 17 27 58 17 2 60 58 24 57 40 56 -2.11 75 0 0 58 52 44 18 11 11.4 15 160 -12 59 53 55 57 54 21 60 34 31 57 18 28 -2.11 76 0 0 58 29 51 18 11 7.7 15 161 -12 59 30 34 57 31 52 60 10 51 56 56 13 -2.11 77 0 0 58 7 11 18 11 3.8 16 162 -12 59 7 27 57 9 35 59 47 24 56 34 10 -2.11 78 0 0 57 44 44 18 10 59.9 16 163 -13 58 44 33 56 47 32 59 24 12 56 12 19 -2.12 79 0 0 57 22 31 18 10 55.8 17 164 -13 58 21 55 56 25 42 59 1 14 55 50 43 -2.12 80 0 0 57 0 34 18 10 51.5 17 165 -14 57 59 31 56 4 7 58 38 32 55 29 21 -2.12 81 0 0 56 38 52 18 10 47.1 18 166 -14 57 37 24 55 42 48 58 16 6 55 8 14 -2.12 82 0 0 56 17 26 18 10 42.6 18 167 -15 57 15 33 55 21 44 57 53 58 54 47 24 -2.12 83 0 0 55 56 18 18 10 38.0 19 168 -15 56 54 0 55 0 57 57 32 8 54 26 49 -2.12 84 0 0 55 35 27 18 10 33.3 19 169 -15 56 32 46 54 40 28 57 10 36 54 6 32 -2.12 85 0 0 55 14 55 18 10 28.4 19 170 -16 56 11 50 54 20 16 56 49 23 53 46 33 -2.12 86 0 0 54 54 41 18 10 23.4 20 171 -16 55 51 13 54 0 23 56 28 30 53 26 52 -2.13 87 0 0 54 34 48 18 10 18.3 20 172 -16 55 30 57 53 40 49 56 7 58 53 7 29 -2.13 88 0 0 54 15 14 18 10 13.2 21 173 -17 55 11 1 53 21 35 55 47 47 52 48 27 -2.13 89 0 0 53 56 0 18 10 7.9 21 174 -17 54 51 26 53 2 41 55 27 57 52 29 44 -2.13 90 0 0 53 37 8 18 10 2.5 21 175 -17 54 32 13 52 44 8 55 8 29 52 11 21 -2.13 91 0 0 53 18 38 18 9 57.0 22 176 -18 54 13 22 52 25 55 54 49 24 51 53 20 -2.13 92 0 0 53 0 30 18 9 51.4 22 177 -18 53 54 54 52 8 5 54 30 41 51 35 39 -2.13 93 0 0 52 42 44 18 9 45.7 22 178 -18 53 36 49 51 50 36 54 12 23 51 18 21 -2.13 94 0 0 52 25 21 18 9 40.0 23 179 -18 53 19 7 51 33 30 53 54 28 51 1 25 -2.13 95 0 0 52 8 21 18 9 34.2 23 180 -18 53 1 49 51 16 47 53 36 57 50 44 51 -2.13 96 0 0 51 51 46 18 9 28.3 23 181 -19 52 44 56 51 0 27 53 19 51 50 28 41 -2.13 97 0 0 51 35 34 18 9 22.3 24 182 -19 52 28 27 50 44 31 53 3 10 50 12 54 -2.13 98 0 0 51 19 47 18 9 16.3 24 183 -19 52 12 23 50 28 59 52 46 55 49 57 30 -2.13 99 0 0 51 4 25 18 9 10.3 24 184 -19 51 56 45 50 13 51 52 31 5 49 42 31 -2.13 100 0 0 50 49 28 18 9 4.1 24 185 -19 51 41 32 49 59 8 52 15 42 49 27 56 -2.13 101 0 0 50 34 56 18 8 58.0 24 186 -19 51 26 46 49 44 50 52 0 45 49 13 46 -2.13 102 0 0 50 20 50 18 8 51.7 25 187 -19 51 12 26 49 30 58 51 46 15 49 0 1 -2.13 103 0 0 50 7 11 18 8 45.5 25 188 -19 50 58 32 49 17 31 51 32 12 48 46 42 -2.13 104 0 0 49 53 58 18 8 39.2 25 189 -19 50 45 6 49 4 30 51 18 36 48 33 48 -2.13 105 0 0 49 41 11 18 8 32.9 25 190 -19 50 32 6 48 51 55 51 5 28 48 21 20 -2.13 106 0 0 49 28 52 18 8 26.5 25 192 -19 50 19 34 48 39 46 50 52 47 48 9 18 -2.13 107 0 0 49 16 59 18 8 20.2 25 193 -19 50 7 30 48 28 4 50 40 35 47 57 42 -2.13 108 0 0 49 5 34 18 8 13.8 25 194 -19 49 55 53 48 16 49 50 28 50 47 46 33 -2.13 109 0 0 48 54 36 18 8 7.4 25 195 -19 49 44 45 48 6 1 50 17 34 47 35 51 -2.13 110 0 0 48 44 6 18 8 1.0 25 196 -19 49 34 5 47 55 41 50 6 47 47 25 36 -2.13 111 0 0 48 34 4 18 7 54.7 25 197 -19 49 23 53 47 45 48 49 56 29 47 15 48 -2.14 112 0 0 48 24 30 18 7 48.3 25 198 -19 49 14 10 47 36 22 49 46 40 47 6 28 -2.14 113 0 0 48 15 25 18 7 41.9 25 199 -19 49 4 56 47 27 25 49 37 20 46 57 35 -2.14 114 0 0 48 6 48 18 7 35.6 25 200 -19 48 56 11 47 18 55 49 28 29 46 49 10 -2.14 115 0 0 47 58 40 18 7 29.2 25 201 -19 48 47 56 47 10 54 49 20 8 46 41 13 -2.14 116 0 0 47 51 1 18 7 22.9 25 202 -18 48 40 9 47 3 21 49 12 17 46 33 44 -2.14 117 0 0 47 43 50 18 7 16.7 25 203 -18 48 32 52 46 56 17 49 4 55 46 26 43 -2.14 118 0 0 47 37 9 18 7 10.4 24 204 -18 48 26 5 46 49 41 48 58 3 46 20 11 -2.14 119 0 0 47 30 57 18 7 4.2 24 205 -18 48 19 47 46 43 35 48 51 42 46 14 7 -2.14 120 0 0 47 25 14 18 6 58.1 24 206 -17 48 13 59 46 37 57 48 45 50 46 8 32 -2.14 121 0 0 47 20 1 18 6 51.9 24 207 -17 48 8 41 46 32 48 48 40 29 46 3 25 -2.14 122 0 0 47 15 18 18 6 45.9 24 208 -17 48 3 54 46 28 8 48 35 39 45 58 48 -2.14 123 0 0 47 11 4 18 6 39.9 23 209 -16 47 59 36 46 23 58 48 31 19 45 54 39 -2.14 124 0 0 47 7 20 18 6 34.0 23 210 -16 47 55 49 46 20 17 48 27 30 45 51 0 -2.14 125 0 0 47 4 6 18 6 28.1 23 211 -16 47 52 32 46 17 5 48 24 11 45 47 50 -2.14 126 0 0 47 1 22 18 6 22.3 22 212 -15 47 49 46 46 14 23 48 21 23 45 45 9 -2.15 127 0 0 46 59 8 18 6 16.6 22 213 -15 47 47 30 46 12 10 48 19 6 45 42 57 -2.15 128 0 0 46 57 24 18 6 10.9 22 214 -15 47 45 45 46 10 27 48 17 20 45 41 15 -2.15 129 0 0 46 56 10 18 6 5.4 21 215 -14 47 44 30 46 9 14 48 16 5 45 40 2 -2.15 130 0 0 46 55 26 18 5 59.9 21 216 -14 47 43 47 46 8 30 48 15 21 45 39 18 -2.15 131 0 0 46 55 13 18 5 54.5 21 217 -13 47 43 34 46 8 17 48 15 8 45 39 5 -2.15 132 0 0 46 55 30 18 5 49.2 20 217 -13 47 43 51 46 8 33 48 15 26 45 39 20 -2.15 133 0 0 46 56 17 18 5 44.1 20 218 -12 47 44 40 46 9 19 48 16 16 45 40 6 -2.15 134 0 0 46 57 34 18 5 39.0 19 219 -12 47 45 59 46 10 35 48 17 36 45 41 21 -2.16 135 0 0 46 59 22 18 5 34.0 19 220 -11 47 47 49 46 12 21 48 19 28 45 43 5 -2.16 136 0 0 47 1 41 18 5 29.1 18 221 -11 47 50 10 46 14 36 48 21 51 45 45 20 -2.16 137 0 0 47 4 29 18 5 24.4 18 222 -10 47 53 2 46 17 22 48 24 45 45 48 4 -2.16 138 0 0 47 7 49 18 5 19.8 18 223 -10 47 56 25 46 20 38 48 28 11 45 51 17 -2.16 139 0 0 47 11 38 18 5 15.3 17 224 -9 48 0 19 46 24 24 48 32 7 45 55 1 -2.16 140 0 0 47 15 58 18 5 10.9 16 224 -9 48 4 44 46 28 39 48 36 35 45 59 14 -2.17 141 0 0 47 20 49 18 5 6.7 16 225 -8 48 9 40 46 33 25 48 41 35 46 3 56 -2.17 142 0 0 47 26 9 18 5 2.6 15 226 -8 48 15 6 46 38 40 48 47 5 46 9 8 -2.17 143 0 0 47 32 0 18 4 58.6 15 227 -7 48 21 3 46 44 25 48 53 6 46 14 50 -2.17 144 0 0 47 38 21 18 4 54.8 14 228 -7 48 27 31 46 50 40 48 59 39 46 21 1 -2.17 145 0 0 47 45 12 18 4 51.1 14 229 -6 48 34 29 46 57 25 49 6 43 46 27 42 -2.18 146 0 0 47 52 34 18 4 47.6 13 229 -5 48 41 59 47 4 39 49 14 17 46 34 52 -2.18 147 0 0 48 0 25 18 4 44.2 13 230 -5 48 49 58 47 12 23 49 22 23 46 42 31 -2.18 148 0 0 48 8 46 18 4 41.0 12 231 -4 48 58 28 47 20 36 49 30 59 46 50 40 -2.19 149 0 0 48 17 37 18 4 37.9 11 232 -3 49 7 29 47 29 18 49 40 6 46 59 17 -2.19 150 0 0 48 26 58 18 4 35.0 11 233 -3 49 16 59 47 38 30 49 49 43 47 8 24 -2.19 151 0 0 48 36 49 18 4 32.2 10 233 -2 49 27 0 47 48 11 49 59 51 47 17 59 -2.20 152 0 0 48 47 8 18 4 29.6 9 234 -2 49 37 31 47 58 21 50 10 30 47 28 3 -2.20 153 0 0 48 57 58 18 4 27.2 9 235 -1 49 48 32 48 8 59 50 21 38 47 38 35 -2.20 154 0 0 49 9 16 18 4 24.9 8 236 0 50 0 2 48 20 7 50 33 17 47 49 36 -2.21 155 0 0 49 21 3 18 4 22.8 8 237 0 50 12 2 48 31 43 50 45 25 48 1 6 -2.22 156 0 0 49 33 19 18 4 20.9 7 237 1 50 24 31 48 43 48 50 58 4 48 13 3 -2.22 157 0 0 49 46 5 18 4 19.2 6 238 2 50 37 29 48 56 21 51 11 11 48 25 28 -2.23 158 0 0 49 59 18 18 4 17.6 6 239 2 50 50 57 49 9 21 51 24 49 48 38 21 -2.24 159 0 0 50 13 0 18 4 16.2 5 240 3 51 4 54 49 22 48 51 38 56 48 51 41 -2.25 160 0 0 50 27 9 18 4 15.0 4 240 4 51 19 19 49 36 44 51 53 32 49 5 28 -2.27 161 0 0 50 41 45 18 4 14.0 4 241 4 51 34 12 49 51 6 52 8 36 49 19 42 -2.29 162 0 0 50 56 49 18 4 13.1 3 242 5 51 49 32 50 5 55 52 24 8 49 34 22 -2.32 163 0 0 51 12 20 18 4 12.4 2 243 6 52 5 20 50 21 11 52 40 8 49 49 29 -2.37 164 0 0 51 28 18 18 4 11.9 2 243 6 52 21 35 50 36 53 52 56 35 50 5 2 -2.46 165 0 0 51 44 42 18 4 11.6 1 244 7 52 38 18 50 53 1 53 13 30 50 21 0 -2.69 166 0 0 52 1 32 18 4 11.5 0 245 8 .. .. .. 51 9 34 .. .. .. 50 37 24 -4.44 167 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 50 54 12 .... Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: HIP 78753 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 04 42.1704 DE: -14 54 36.622 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 04 42.1704 DE: -14 54 36.622 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 8.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (44) Nysa asteroid class: approx. diameter [km]: 75 approx. diameter ["]: 0.065 distance from Earth [AU]: 1.57950 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#133 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): 0.032", 0.021", 102.981° remarks: * orbital elements for (44)Nysa : Mean anomaly = 108.6294278228 deg Arg. of pericenter = 344.1626319208 deg Long. of node = 131.4925949175 deg Inclination = 3.7115321109 deg Eccentricity = 0.1491593961 Semimajor axis = 2.4230674747 AU Perihelion dist = 2.0616441935 AU Mag: H = 7.01, G = 0.46 Epoch of elements : MJD 60080.75555556 TDT (2023 May 16.7556) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1332023Apr24,6.42,2023,5,16,18.134579,0.161435,0.888925,-6.443603,1.170350,-0.000771,-0.000416,0.000001,0.000000 95.2935,-14.9750,-92.92,19.17,False HIP 78753,16.07838066,-14.9101729,0.00,8.14,0.00,0.0,0,,16.10053949,-14.9750106,2.38,0.00,0,0,0 44,Nysa,10.39,74.5,1.5795,0,0,-2.476,6.52,,4.0,0 0,108.4320,2023,5,16,344.1626,131.4926,3.7115,0.14916,2.42307,2.06164,7.00,5.0,0.15 1.318,0.0323,0.0207,103,0.0207,Known errors,-1.00,-1,-1,-1 20230516__78753,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org