IOTA/IOTA-ES occultation update for (169) Zelia / HIP 90493 event on 2024 Jun 09, 14:56 UT Visible from Summary ------- On 2024 Jun 09 UT, the 36.3 km diameter asteroid (169) Zelia will occult a 8.1 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.16 mag to 12.23 mag (the magnitude of the asteroid) for at most 5.040 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: 2024 Jun 09, 14:46 - 2024 Jun 09, 15:06 * geocentric midpoint of event [JD]: 2460471.12254508 * magnitude of target star: 8.09 * magnitude drop [mag]: 4.16 * estimated maximum duration [s]: 5.040 * Moon: 11 % sunlit, 158° distance * Sun: 160° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 54 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 4.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.038, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.038", 0.002", 87°) * approx speed of asteroid's shadow [km/s]: 7.2017 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 90493 by 169 Zelia on 2024 Jun 9 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 85 0 0 29 16 27 15 6 20.4 1 130 -20 29 35 52 28 57 11 29 41 19 28 51 50 .... 86 0 0 28 34 46 15 6 19.9 2 130 -21 28 53 57 28 15 43 28 59 21 28 10 26 -0.68 87 0 0 27 54 1 15 6 18.8 3 130 -22 28 13 0 27 35 12 28 18 20 27 29 58 -0.86 88 0 0 27 14 14 15 6 17.2 4 131 -23 27 33 0 26 55 37 27 38 16 26 50 26 -0.94 89 0 0 26 35 24 15 6 15.2 5 131 -25 26 53 57 26 16 58 26 59 10 26 11 51 -0.99 90 0 0 25 57 30 15 6 12.7 6 132 -26 26 15 52 25 39 16 26 21 1 25 34 11 -1.02 91 0 0 25 20 33 15 6 9.8 7 132 -27 25 38 44 25 2 30 25 43 50 24 57 29 -1.04 92 0 0 24 44 33 15 6 6.4 8 133 -28 25 2 33 24 26 41 25 7 37 24 21 43 -1.05 93 0 0 24 9 31 15 6 2.6 9 133 -29 24 27 20 23 51 48 24 32 20 23 46 53 -1.06 94 0 0 23 35 25 15 5 58.4 11 134 -30 23 53 4 23 17 52 23 58 1 23 13 0 -1.07 95 0 0 23 2 15 15 5 53.7 12 134 -31 23 19 45 22 44 52 23 24 39 22 40 2 -1.08 96 0 0 22 30 2 15 5 48.7 13 134 -32 22 47 22 22 12 48 22 52 14 22 8 1 -1.09 97 0 0 21 58 45 15 5 43.3 14 135 -33 22 15 56 21 41 40 22 20 46 21 36 55 -1.09 98 0 0 21 28 24 15 5 37.5 15 135 -34 21 45 27 21 11 28 21 50 14 21 6 45 -1.09 99 0 0 20 58 59 15 5 31.3 16 136 -35 21 15 53 20 42 11 21 20 38 20 37 31 -1.10 100 0 0 20 30 29 15 5 24.8 17 136 -36 20 47 16 20 13 49 20 51 58 20 9 11 -1.10 101 0 0 20 2 55 15 5 17.9 18 137 -37 20 19 33 19 46 22 20 24 13 19 41 46 -1.10 102 0 0 19 36 15 15 5 10.7 18 137 -38 19 52 46 19 19 50 19 57 24 19 15 16 -1.10 103 0 0 19 10 30 15 5 3.2 19 138 -38 19 26 54 18 54 11 19 31 30 18 49 39 -1.10 104 0 0 18 45 38 15 4 55.3 20 138 -39 19 1 56 18 29 27 19 6 30 18 24 56 -1.11 105 0 0 18 21 41 15 4 47.2 21 138 -40 18 37 52 18 5 36 18 42 24 18 1 7 -1.11 106 0 0 17 58 37 15 4 38.7 22 139 -41 18 14 42 17 42 38 18 19 12 17 38 11 -1.11 107 0 0 17 36 27 15 4 30.0 23 139 -42 17 52 25 17 20 33 17 56 54 17 16 8 -1.11 108 0 0 17 15 9 15 4 21.0 24 140 -43 17 31 2 16 59 21 17 35 29 16 54 57 -1.11 109 0 0 16 54 43 15 4 11.7 25 140 -43 17 10 31 16 39 1 17 14 57 16 34 39 -1.11 110 0 0 16 35 10 15 4 2.2 26 141 -44 16 50 53 16 19 33 16 55 17 16 15 12 -1.11 111 0 0 16 16 29 15 3 52.4 26 141 -45 16 32 6 16 0 56 16 36 29 15 56 37 -1.11 112 0 0 15 58 39 15 3 42.4 27 142 -46 16 14 12 15 43 11 16 18 33 15 38 53 -1.11 113 0 0 15 41 40 15 3 32.1 28 143 -46 15 57 9 15 26 17 16 1 29 15 22 0 -1.11 114 0 0 15 25 33 15 3 21.6 29 143 -47 15 40 57 15 10 13 15 45 16 15 5 57 -1.11 115 0 0 15 10 16 15 3 10.9 29 144 -48 15 25 36 14 55 0 15 29 54 14 50 45 -1.11 116 0 0 14 55 49 15 3 0.0 30 144 -48 15 11 6 14 40 37 15 15 22 14 36 23 -1.11 117 0 0 14 42 12 15 2 48.9 31 145 -49 14 57 25 14 27 4 15 1 41 14 22 51 -1.11 118 0 0 14 29 25 15 2 37.5 32 145 -49 14 44 35 14 14 20 14 48 50 14 10 8 -1.11 119 0 0 14 17 28 15 2 26.0 32 146 -50 14 32 35 14 2 26 14 36 49 13 58 15 -1.11 120 0 0 14 6 20 15 2 14.3 33 147 -50 14 21 24 13 51 21 14 25 37 13 47 10 -1.11 121 0 0 13 56 1 15 2 2.5 34 147 -51 14 11 2 13 41 4 14 15 15 13 36 55 -1.11 122 0 0 13 46 31 15 1 50.4 34 148 -51 14 1 30 13 31 37 14 5 42 13 27 28 -1.11 123 0 0 13 37 50 15 1 38.2 35 149 -52 13 52 46 13 22 57 13 56 57 13 18 49 -1.10 124 0 0 13 29 57 15 1 25.9 35 150 -52 13 44 51 13 15 6 13 49 2 13 10 59 -1.10 125 0 0 13 22 52 15 1 13.4 36 150 -53 13 37 45 13 8 4 13 41 55 13 3 56 -1.10 126 0 0 13 16 35 15 1 0.7 37 151 -53 13 31 26 13 1 49 13 35 36 12 57 42 -1.10 127 0 0 13 11 6 15 0 47.9 37 152 -53 13 25 56 12 56 21 13 30 5 12 52 15 -1.10 128 0 0 13 6 25 15 0 35.0 38 153 -53 13 21 14 12 51 41 13 25 23 12 47 35 -1.10 129 0 0 13 2 32 15 0 22.0 38 154 -54 13 17 19 12 47 49 13 21 28 12 43 43 -1.10 130 0 0 12 59 26 15 0 8.8 38 154 -54 13 14 12 12 44 44 13 18 21 12 40 38 -1.10 131 0 0 12 57 8 14 59 55.5 39 155 -54 13 11 53 12 42 26 13 16 1 12 38 21 -1.10 132 0 0 12 55 36 14 59 42.1 39 156 -54 13 10 21 12 40 55 13 14 29 12 36 50 -1.10 133 0 0 12 54 52 14 59 28.6 40 157 -54 13 9 37 12 40 12 13 13 45 12 36 6 -1.10 134 0 0 12 54 55 14 59 15.0 40 158 -54 13 9 40 12 40 15 13 13 48 12 36 10 -1.10 135 0 0 12 55 45 14 59 1.4 40 159 -54 13 10 30 12 41 5 13 14 38 12 37 0 -1.10 136 0 0 12 57 22 14 58 47.6 41 160 -54 13 12 7 12 42 42 13 16 15 12 38 37 -1.10 137 0 0 12 59 47 14 58 33.8 41 161 -54 13 14 32 12 45 6 13 18 40 12 41 0 -1.10 138 0 0 13 2 58 14 58 19.8 41 162 -54 13 17 43 12 48 16 13 21 52 12 44 11 -1.10 139 0 0 13 6 56 14 58 5.8 41 163 -54 13 21 42 12 52 13 13 25 51 12 48 8 -1.10 140 0 0 13 11 41 14 57 51.8 42 164 -54 13 26 28 12 56 58 13 30 37 12 52 52 -1.10 141 0 0 13 17 13 14 57 37.7 42 165 -53 13 32 1 13 2 28 13 36 10 12 58 22 -1.10 142 0 0 13 23 32 14 57 23.5 42 166 -53 13 38 22 13 8 46 13 42 31 13 4 39 -1.11 143 0 0 13 30 38 14 57 9.3 42 167 -53 13 45 29 13 15 51 13 49 39 13 11 44 -1.11 144 0 0 13 38 31 14 56 55.0 42 168 -53 13 53 24 13 23 42 13 57 34 13 19 35 -1.11 145 0 0 13 47 11 14 56 40.8 42 169 -52 14 2 6 13 32 21 14 6 17 13 28 13 -1.11 146 0 0 13 56 39 14 56 26.4 42 170 -52 14 11 36 13 41 47 14 15 48 13 37 38 -1.11 147 0 0 14 6 55 14 56 12.1 42 171 -51 14 21 54 13 52 0 14 26 6 13 47 50 -1.11 148 0 0 14 17 57 14 55 57.7 42 172 -51 14 32 58 14 2 59 14 37 11 13 58 49 -1.11 149 0 0 14 29 46 14 55 43.4 42 173 -50 14 44 51 14 14 46 14 49 4 14 10 36 -1.11 150 0 0 14 42 24 14 55 29.0 42 174 -50 14 57 31 14 27 21 15 1 46 14 23 10 -1.11 151 0 0 14 55 49 14 55 14.6 42 175 -49 15 11 0 14 40 43 15 15 15 14 36 31 -1.11 152 0 0 15 10 3 14 55 0.3 42 176 -49 15 25 16 14 54 53 15 29 32 14 50 40 -1.11 153 0 0 15 25 4 14 54 45.9 41 178 -48 15 40 21 15 9 51 15 44 38 15 5 37 -1.11 154 0 0 15 40 53 14 54 31.6 41 179 -48 15 56 14 15 25 37 16 0 32 15 21 22 -1.11 155 0 0 15 57 31 14 54 17.3 41 180 -47 16 12 56 15 42 11 16 17 15 15 37 55 -1.12 156 0 0 16 14 58 14 54 3.0 41 181 -46 16 30 27 15 59 34 16 34 47 15 55 16 -1.12 157 0 0 16 33 13 14 53 48.8 40 182 -46 16 48 46 16 17 45 16 53 8 16 13 26 -1.12 158 0 0 16 52 17 14 53 34.6 40 183 -45 17 7 55 16 36 44 17 12 18 16 32 24 -1.12 159 0 0 17 12 10 14 53 20.5 39 184 -44 17 27 53 16 56 32 17 32 17 16 52 11 -1.12 160 0 0 17 32 52 14 53 6.5 39 185 -44 17 48 40 17 17 10 17 53 6 17 12 47 -1.12 161 0 0 17 54 24 14 52 52.5 39 186 -43 18 10 17 17 38 36 18 14 44 17 34 12 -1.12 162 0 0 18 16 45 14 52 38.6 38 187 -42 18 32 44 18 0 52 18 37 13 17 56 27 -1.12 163 0 0 18 39 56 14 52 24.8 38 188 -41 18 56 1 18 23 58 19 0 31 18 19 31 -1.13 164 0 0 19 3 58 14 52 11.1 37 189 -40 19 20 8 18 47 53 19 24 40 18 43 24 -1.13 165 0 0 19 28 49 14 51 57.6 37 189 -39 19 45 5 19 12 38 19 49 39 19 8 8 -1.13 166 0 0 19 54 31 14 51 44.1 36 190 -39 20 10 54 19 38 13 20 15 29 19 33 41 -1.13 167 0 0 20 21 3 14 51 30.8 35 191 -38 20 37 33 20 4 39 20 42 10 20 0 5 -1.13 168 0 0 20 48 26 14 51 17.6 35 192 -37 21 5 3 20 31 54 21 9 42 20 27 19 -1.13 169 0 0 21 16 39 14 51 4.5 34 193 -36 21 33 24 21 0 1 21 38 6 20 55 23 -1.14 170 0 0 21 45 44 14 50 51.6 33 194 -35 22 2 36 21 28 58 22 7 20 21 24 18 -1.14 171 0 0 22 15 40 14 50 38.9 33 195 -34 22 32 40 21 58 46 22 37 27 21 54 4 -1.14 172 0 0 22 46 27 14 50 26.4 32 195 -33 23 3 36 22 29 25 23 8 25 22 24 41 -1.14 173 0 0 23 18 6 14 50 14.1 31 196 -32 23 35 23 23 0 56 23 40 14 22 56 9 -1.14 174 0 0 23 50 36 14 50 1.9 31 197 -31 24 8 2 23 33 17 24 12 56 23 28 28 -1.15 175 0 0 24 23 58 14 49 50.0 30 198 -30 24 41 33 24 6 29 24 46 30 24 1 38 -1.15 176 0 0 24 58 11 14 49 38.3 29 199 -29 25 15 56 24 40 33 25 20 55 24 35 39 -1.15 177 0 0 25 33 16 14 49 26.9 28 199 -28 25 51 11 25 15 28 25 56 13 25 10 31 -1.15 178 0 0 26 9 12 14 49 15.7 27 200 -27 26 27 18 25 51 15 26 32 23 25 46 15 -1.15 179 0 0 26 46 0 14 49 4.7 26 201 -26 27 4 17 26 27 52 27 9 24 26 22 49 -1.16 180 0 0 27 23 40 14 48 54.1 26 202 -25 27 42 7 27 5 21 27 47 18 27 0 15 -1.16 -179 0 0 28 2 11 14 48 43.7 25 202 -24 28 20 49 27 43 40 28 26 4 27 38 31 -1.16 -178 0 0 28 41 32 14 48 33.7 24 203 -23 29 0 23 28 22 50 29 5 41 28 17 38 -1.16 -177 0 0 29 21 45 14 48 24.0 23 204 -22 29 40 48 29 2 51 29 46 9 28 57 36 -1.16 -176 0 0 30 2 48 14 48 14.6 22 204 -21 30 22 4 29 43 42 30 27 29 29 38 23 -1.17 -175 0 0 30 44 42 14 48 5.5 21 205 -20 31 4 11 30 25 23 31 9 39 30 20 0 -1.17 -174 0 0 31 27 25 14 47 56.9 20 206 -19 31 47 8 31 7 53 31 52 40 31 2 27 -1.17 -173 0 0 32 10 58 14 47 48.5 19 206 -18 32 30 54 31 51 12 32 36 31 31 45 42 -1.17 -172 0 0 32 55 19 14 47 40.6 18 207 -17 33 15 30 32 35 19 33 21 10 32 29 45 -1.18 -171 0 0 33 40 28 14 47 33.1 17 208 -15 34 0 54 33 20 13 34 6 38 33 14 36 -1.18 -170 0 0 34 26 24 14 47 26.0 16 208 -14 34 47 5 34 5 54 34 52 54 34 0 13 -1.18 -169 0 0 35 13 7 14 47 19.3 15 209 -13 35 34 4 34 52 21 35 39 57 34 46 36 -1.18 -168 0 0 36 0 34 14 47 13.1 14 209 -12 36 21 47 35 39 33 36 27 45 35 33 43 -1.19 -167 0 0 36 48 46 14 47 7.3 12 210 -11 37 10 16 36 27 29 37 16 18 36 21 34 -1.19 -166 0 0 37 37 40 14 47 2.0 11 211 -10 37 59 27 37 16 6 38 5 35 37 10 7 -1.19 -165 0 0 38 27 16 14 46 57.2 10 211 -9 38 49 21 38 5 25 38 55 33 37 59 21 -1.20 -164 0 0 39 17 31 14 46 52.8 9 212 -8 39 39 54 38 55 23 39 46 12 38 49 15 -1.20 -163 0 0 40 8 25 14 46 49.0 8 213 -7 40 31 6 39 45 59 40 37 29 39 39 45 -1.21 -162 0 0 40 59 54 14 46 45.6 7 213 -5 41 22 54 40 37 10 41 29 23 40 30 52 -1.22 -161 0 0 41 51 58 14 46 42.8 6 214 -4 42 15 17 41 28 55 42 21 51 41 22 32 -1.23 -160 0 0 42 44 34 14 46 40.4 5 215 -3 43 8 12 42 21 12 43 14 52 42 14 43 -1.24 -159 0 0 43 37 38 14 46 38.6 3 215 -2 44 1 37 43 13 58 44 8 22 43 7 24 -1.27 -158 0 0 44 31 10 14 46 37.4 2 216 -1 44 55 28 44 7 10 45 2 19 44 0 30 -1.32 -157 0 0 45 25 5 14 46 36.6 1 217 0 45 49 44 45 0 45 45 56 40 44 54 1 -1.46 -156 0 0 46 19 21 14 46 36.4 0 218 1 .. .. .. 45 54 41 .. .. .. 45 47 51 -6.56 Uncertainty in time = +/- 5 secs Prediction of 2023 Jul 14.4 Data for the target star ------------------------ * name: HIP 90493 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 27 56.0838 DE: -33 19 29.539 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 27 56.0838 DE: -33 19 29.539 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.700,0.500) * V mag [mag]: 8.1 * B mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (169) Zelia asteroid class: approx. diameter [km]: 36 approx. diameter ["]: 0.042 distance from Earth [AU]: 1.19970 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.038", 0.002", 86.7° remarks: * orbital elements for (169)Zelia : Mean anomaly = 311.0394910954 deg Arg. of pericenter = 334.7956178390 deg Long. of node = 354.7221106856 deg Inclination = 5.4999740029 deg Eccentricity = 0.1302839952 Semimajor axis = 2.3585046927 AU Perihelion dist = 2.0512292786 AU Mag: H = 9.53, G = 0.15 Epoch of elements : MJD 60470.62254617 TDT (2024 Jun 09.6225) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,5.04,2024,6,9,14.941082,-0.150324,0.726541,-3.980541,-0.823507,-0.001569,0.000798,0.000001,0.000000 154.8058,-33.3096,-44.26,23.00,False HIP 90493,18.46557881,-33.3248718,12.45,8.09,5.74,0.0,4,,18.49272458,-33.3096281,4.16,6.04,0,0,0 169,Zelia,12.23,36.300,1.1997,0,0,-2.328,-6.03,,2.2,0 0,310.8701,2024,6,9,334.7956,354.7221,5.5000,0.13028,2.35850,2.05123,9.53,5.0,0.15 1.140,0.0383,0.0017,87,0.0058,Known errors,0.83,0,-1,-1 20240609__90493,60139.38 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 09:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org