IOTA/IOTA-ES occultation update for (5204) Herakleitos / TYC 6345-01142-1 event on 2024 Aug 10, 11:35 UT Visible from Summary ------- On 2024 Aug 10 UT, the 13.151 km diameter asteroid (5204) Herakleitos will occult a 11.2 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.88 mag to 18.09 mag (the magnitude of the asteroid) for at most 0.900 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 Aug 10, 11:31 - 2024 Aug 10, 11:40 * geocentric midpoint of event [JD]: 2460532.98324417 * magnitude of target star: 11.21 * magnitude drop [mag]: 6.88 * estimated maximum duration [s]: 0.900 * Moon: 31 % sunlit, 108° distance * Sun: 175° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 2.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.002", 74°) * approx speed of asteroid's shadow [km/s]: 14.6176 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6345-01142-1 by 5204 Herakleitos on 2024 Aug 10 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 104 0 0 36 59 49 11 39 56.1 0 111 3 37 6 41 36 52 59 37 10 1 36 49 41 .... 105 0 0 36 42 31 11 39 56.0 1 111 2 36 49 21 36 35 43 36 52 40 36 32 25 -0.82 106 0 0 36 25 48 11 39 55.7 2 112 1 36 32 36 36 19 1 36 35 54 36 15 44 -1.10 107 0 0 36 9 40 11 39 55.2 3 112 1 36 16 26 36 2 55 36 19 44 35 59 39 -1.22 108 0 0 35 54 7 11 39 54.5 4 113 0 36 0 51 35 47 24 36 4 8 35 44 8 -1.28 109 0 0 35 39 10 11 39 53.7 5 113 -1 35 45 53 35 32 28 35 49 9 35 29 14 -1.32 110 0 0 35 24 49 11 39 52.7 5 114 -2 35 31 30 35 18 9 35 34 45 35 14 55 -1.35 111 0 0 35 11 3 11 39 51.5 6 115 -3 35 17 43 35 4 24 35 20 58 35 1 11 -1.37 112 0 0 34 57 54 11 39 50.2 7 115 -4 35 4 32 34 51 16 35 7 46 34 48 4 -1.38 113 0 0 34 45 21 11 39 48.7 8 116 -4 34 51 58 34 38 45 34 55 11 34 35 33 -1.40 114 0 0 34 33 24 11 39 47.0 9 116 -5 34 39 59 34 26 49 34 43 12 34 23 38 -1.41 115 0 0 34 22 3 11 39 45.2 10 117 -6 34 28 38 34 15 30 34 31 50 34 12 19 -1.41 116 0 0 34 11 19 11 39 43.2 10 118 -7 34 17 52 34 4 46 34 21 4 34 1 36 -1.42 117 0 0 34 1 11 11 39 41.1 11 118 -8 34 7 44 33 54 40 34 10 55 33 51 30 -1.43 118 0 0 33 51 40 11 39 38.8 12 119 -9 33 58 12 33 45 10 34 1 22 33 42 1 -1.43 119 0 0 33 42 46 11 39 36.4 13 119 -9 33 49 17 33 36 17 33 52 27 33 33 8 -1.44 120 0 0 33 34 28 11 39 33.8 14 120 -10 33 40 58 33 28 0 33 44 8 33 24 52 -1.44 121 0 0 33 26 48 11 39 31.0 14 121 -11 33 33 16 33 20 20 33 36 26 33 17 12 -1.44 122 0 0 33 19 43 11 39 28.2 15 121 -12 33 26 11 33 13 17 33 29 20 33 10 9 -1.44 123 0 0 33 13 16 11 39 25.1 16 122 -13 33 19 43 33 6 50 33 22 52 33 3 43 -1.45 124 0 0 33 7 26 11 39 22.0 17 123 -13 33 13 52 33 1 0 33 17 0 32 57 53 -1.45 125 0 0 33 2 12 11 39 18.7 17 123 -14 33 8 38 32 55 47 33 11 46 32 52 40 -1.45 126 0 0 32 57 35 11 39 15.2 18 124 -15 33 4 0 32 51 10 33 7 8 32 48 4 -1.45 127 0 0 32 53 35 11 39 11.6 19 125 -16 33 0 0 32 47 11 33 3 7 32 44 4 -1.45 128 0 0 32 50 11 11 39 7.9 20 125 -16 32 56 36 32 43 48 32 59 43 32 40 42 -1.46 129 0 0 32 47 25 11 39 4.1 20 126 -17 32 53 49 32 41 1 32 56 56 32 37 55 -1.46 130 0 0 32 45 15 11 39 0.1 21 127 -18 32 51 39 32 38 52 32 54 46 32 35 46 -1.46 131 0 0 32 43 41 11 38 56.0 22 127 -18 32 50 5 32 37 19 32 53 12 32 34 13 -1.46 132 0 0 32 42 45 11 38 51.8 22 128 -19 32 49 8 32 36 22 32 52 15 32 33 17 -1.46 133 0 0 32 42 25 11 38 47.5 23 129 -20 32 48 48 32 36 2 32 51 55 32 32 57 -1.46 134 0 0 32 42 41 11 38 43.1 24 130 -21 32 49 4 32 36 19 32 52 11 32 33 13 -1.46 135 0 0 32 43 34 11 38 38.5 24 130 -21 32 49 57 32 37 11 32 53 4 32 34 6 -1.46 136 0 0 32 45 3 11 38 33.9 25 131 -22 32 51 27 32 38 41 32 54 34 32 35 35 -1.46 137 0 0 32 47 9 11 38 29.1 25 132 -22 32 53 33 32 40 46 32 56 39 32 37 41 -1.46 138 0 0 32 49 51 11 38 24.2 26 133 -23 32 56 15 32 43 28 32 59 22 32 40 22 -1.46 139 0 0 32 53 9 11 38 19.3 27 134 -24 32 59 33 32 46 46 33 2 40 32 43 40 -1.47 140 0 0 32 57 3 11 38 14.2 27 134 -24 33 3 27 32 50 39 33 6 34 32 47 34 -1.47 141 0 0 33 1 34 11 38 9.0 28 135 -25 33 7 58 32 55 10 33 11 6 32 52 4 -1.47 142 0 0 33 6 41 11 38 3.8 28 136 -25 33 13 6 33 0 16 33 16 13 32 57 10 -1.47 143 0 0 33 12 22 11 37 58.4 29 137 -26 33 18 48 33 5 58 33 21 56 33 2 51 -1.47 144 0 0 33 18 40 11 37 53.0 29 138 -27 33 25 6 33 12 15 33 28 14 33 9 8 -1.47 145 0 0 33 25 33 11 37 47.5 30 139 -27 33 32 0 33 19 7 33 35 9 33 16 0 -1.47 146 0 0 33 33 2 11 37 41.9 30 140 -28 33 39 30 33 26 36 33 42 39 33 23 29 -1.47 147 0 0 33 41 7 11 37 36.3 30 141 -28 33 47 35 33 34 40 33 50 44 33 31 32 -1.47 148 0 0 33 49 47 11 37 30.6 31 142 -29 33 56 16 33 43 19 33 59 25 33 40 11 -1.47 149 0 0 33 59 1 11 37 24.8 31 143 -29 34 5 31 33 52 33 34 8 41 33 49 24 -1.47 150 0 0 34 8 51 11 37 18.9 32 144 -29 34 15 22 34 2 22 34 18 32 33 59 13 -1.47 151 0 0 34 19 16 11 37 13.0 32 145 -30 34 25 48 34 12 45 34 28 58 34 9 36 -1.47 152 0 0 34 30 15 11 37 7.1 32 146 -30 34 36 48 34 23 44 34 39 59 34 20 34 -1.47 153 0 0 34 41 49 11 37 1.0 32 147 -31 34 48 23 34 35 17 34 51 35 34 32 6 -1.47 154 0 0 34 53 58 11 36 55.0 33 148 -31 35 0 33 34 47 24 35 3 45 34 44 13 -1.48 155 0 0 35 6 40 11 36 48.9 33 149 -31 35 13 16 35 0 5 35 16 29 34 56 54 -1.48 156 0 0 35 19 56 11 36 42.7 33 150 -31 35 26 34 35 13 20 35 29 47 35 10 8 -1.48 157 0 0 35 33 47 11 36 36.6 33 151 -32 35 40 25 35 27 9 35 43 40 35 23 56 -1.48 158 0 0 35 48 10 11 36 30.3 34 152 -32 35 54 51 35 41 32 35 58 5 35 38 18 -1.48 159 0 0 36 3 8 11 36 24.1 34 153 -32 36 9 49 35 56 27 36 13 5 35 53 13 -1.48 160 0 0 36 18 38 11 36 17.8 34 154 -32 36 25 21 36 11 56 36 28 37 36 8 41 -1.48 161 0 0 36 34 41 11 36 11.6 34 155 -33 36 41 26 36 27 58 36 44 43 36 24 42 -1.48 162 0 0 36 51 17 11 36 5.3 34 157 -33 36 58 3 36 44 32 37 1 21 36 41 16 -1.48 163 0 0 37 8 25 11 35 59.0 34 158 -33 37 15 13 37 1 38 37 18 31 36 58 21 -1.48 164 0 0 37 26 5 11 35 52.6 34 159 -33 37 32 54 37 19 17 37 36 14 37 15 59 -1.48 165 0 0 37 44 17 11 35 46.3 34 160 -33 37 51 8 37 37 27 37 54 29 37 34 8 -1.48 166 0 0 38 3 0 11 35 40.0 34 161 -33 38 9 53 37 56 8 38 13 14 37 52 48 -1.49 167 0 0 38 22 14 11 35 33.7 34 162 -33 38 29 9 38 15 20 38 32 32 38 12 0 -1.49 168 0 0 38 41 59 11 35 27.4 34 164 -33 38 48 56 38 35 3 38 52 20 38 31 42 -1.49 169 0 0 39 2 15 11 35 21.1 34 165 -33 39 9 14 38 55 17 39 12 38 38 51 54 -1.49 170 0 0 39 23 0 11 35 14.9 34 166 -33 39 30 1 39 16 0 39 33 26 39 12 37 -1.49 171 0 0 39 44 15 11 35 8.6 33 167 -33 39 51 18 39 37 13 39 54 45 39 33 48 -1.49 172 0 0 40 5 59 11 35 2.4 33 168 -33 40 13 4 39 58 54 40 16 32 39 55 29 -1.49 173 0 0 40 28 11 11 34 56.2 33 169 -33 40 35 19 40 21 5 40 38 47 40 17 38 -1.49 174 0 0 40 50 52 11 34 50.1 33 170 -33 40 58 2 40 43 43 41 1 32 40 40 15 -1.49 175 0 0 41 14 0 11 34 44.0 32 172 -32 41 21 13 41 6 49 41 24 44 41 3 20 -1.49 176 0 0 41 37 36 11 34 38.0 32 173 -32 41 44 51 41 30 22 41 48 23 41 26 52 -1.50 177 0 0 42 1 38 11 34 32.0 32 174 -32 42 8 55 41 54 22 42 12 28 41 50 50 -1.50 178 0 0 42 26 6 11 34 26.1 31 175 -32 42 33 26 42 18 47 42 37 0 42 15 15 -1.50 179 0 0 42 50 59 11 34 20.2 31 176 -31 42 58 22 42 43 38 43 1 58 42 40 4 -1.50 -180 0 0 43 16 17 11 34 14.4 31 177 -31 43 23 43 43 8 54 43 27 20 43 5 19 -1.50 -179 0 0 43 42 0 11 34 8.7 30 178 -31 43 49 28 43 34 33 43 53 6 43 30 57 -1.50 -178 0 0 44 8 5 11 34 3.0 30 179 -30 44 15 36 44 0 36 44 19 16 43 56 59 -1.50 -177 0 0 44 34 34 11 33 57.4 29 181 -30 44 42 7 44 27 2 44 45 49 44 23 23 -1.50 -176 0 0 45 1 24 11 33 51.9 29 182 -30 45 9 1 44 53 50 45 12 43 44 50 9 -1.50 -175 0 0 45 28 36 11 33 46.5 29 183 -29 45 36 15 45 20 58 45 39 59 45 17 17 -1.51 -174 0 0 45 56 8 11 33 41.2 28 184 -29 46 3 50 45 48 27 46 7 35 45 44 44 -1.51 -173 0 0 46 23 59 11 33 36.0 28 185 -28 46 31 44 46 16 16 46 35 31 46 12 31 -1.51 -172 0 0 46 52 9 11 33 30.9 27 186 -28 46 59 57 46 44 23 47 3 46 46 40 37 -1.51 -171 0 0 47 20 37 11 33 25.9 26 187 -27 47 28 28 47 12 48 47 32 18 47 9 1 -1.51 -170 0 0 47 49 22 11 33 20.9 26 188 -27 47 57 16 47 41 29 48 1 7 47 37 41 -1.51 -169 0 0 48 18 22 11 33 16.2 25 189 -26 48 26 20 48 10 27 48 30 12 48 6 37 -1.51 -168 0 0 48 47 38 11 33 11.5 25 190 -26 48 55 38 48 39 39 48 59 32 48 35 48 -1.51 -167 0 0 49 17 7 11 33 6.9 24 191 -25 49 25 10 49 9 5 49 29 6 49 5 12 -1.51 -166 0 0 49 46 48 11 33 2.5 24 192 -25 49 54 55 49 38 44 49 58 52 49 34 49 -1.51 -165 0 0 50 16 42 11 32 58.2 23 193 -24 50 24 52 50 8 34 50 28 50 50 4 38 -1.52 -164 0 0 50 46 46 11 32 54.0 22 194 -24 50 54 59 50 38 35 50 58 59 50 34 38 -1.52 -163 0 0 51 16 59 11 32 49.9 22 195 -23 51 25 15 51 8 46 51 29 17 51 4 47 -1.52 -162 0 0 51 47 21 11 32 46.0 21 196 -22 51 55 40 51 39 4 51 59 43 51 35 4 -1.52 -161 0 0 52 17 50 11 32 42.2 20 197 -22 52 26 12 52 9 30 52 30 17 52 5 28 -1.52 -160 0 0 52 48 24 11 32 38.5 20 198 -21 52 56 49 52 40 1 53 0 56 52 35 58 -1.52 -159 0 0 53 19 3 11 32 35.0 19 198 -21 53 27 31 53 10 37 53 31 39 53 6 32 -1.52 -158 0 0 53 49 45 11 32 31.6 18 199 -20 53 58 16 53 41 16 54 2 25 53 37 10 -1.52 -157 0 0 54 20 29 11 32 28.4 18 200 -19 54 29 3 54 11 57 54 33 14 54 7 50 -1.52 -156 0 0 54 51 13 11 32 25.3 17 201 -19 54 59 50 54 42 39 55 4 2 54 38 30 -1.52 -155 0 0 55 21 57 11 32 22.3 16 202 -18 55 30 37 55 13 20 55 34 51 55 9 10 -1.52 -154 0 0 55 52 39 11 32 19.5 16 203 -17 56 1 22 55 43 59 56 5 36 55 39 48 -1.53 -153 0 0 56 23 18 11 32 16.8 15 204 -17 56 32 3 56 14 35 56 36 19 56 10 22 -1.53 -152 0 0 56 53 51 11 32 14.2 14 205 -16 57 2 39 56 45 6 57 6 56 56 40 52 -1.53 -151 0 0 57 24 19 11 32 11.8 14 206 -15 57 33 9 57 15 32 57 37 28 57 11 16 -1.53 -150 0 0 57 54 39 11 32 9.6 13 207 -15 58 3 32 57 45 50 58 7 52 57 41 33 -1.53 -149 0 0 58 24 51 11 32 7.4 12 208 -14 58 33 46 58 15 59 58 38 7 58 11 42 -1.53 -148 0 0 58 54 53 11 32 5.4 11 208 -13 59 3 50 58 45 59 59 8 12 58 41 40 -1.53 -147 0 0 59 24 43 11 32 3.6 11 209 -13 59 33 42 59 15 47 59 38 5 59 11 28 -1.53 -146 0 0 59 54 21 11 32 1.8 10 210 -12 60 3 22 59 45 23 60 7 46 59 41 3 -1.53 -145 0 0 60 23 45 11 32 0.2 9 211 -11 60 32 48 60 14 45 60 37 12 60 10 24 -1.54 -144 0 0 60 52 54 11 31 58.8 9 212 -11 61 1 58 60 43 53 61 6 24 60 39 31 -1.54 -143 0 0 61 21 46 11 31 57.4 8 213 -10 61 30 52 61 12 44 61 35 19 61 8 21 -1.54 -142 0 0 61 50 22 11 31 56.2 7 214 -9 61 59 29 61 41 18 62 3 56 61 36 55 -1.54 -141 0 0 62 18 39 11 31 55.1 7 215 -9 62 27 47 62 9 34 62 32 15 62 5 10 -1.54 -140 0 0 62 46 37 11 31 54.1 6 216 -8 62 55 46 62 37 31 63 0 14 62 33 6 -1.54 -139 0 0 63 14 14 11 31 53.2 5 216 -8 63 23 24 63 5 7 63 27 52 63 0 42 -1.55 -138 0 0 63 41 29 11 31 52.5 5 217 -7 63 50 40 63 32 22 63 55 8 63 27 57 -1.55 -137 0 0 64 8 22 11 31 51.8 4 218 -6 64 17 33 63 59 14 64 22 2 63 54 49 -1.56 -136 0 0 64 34 52 11 31 51.2 4 219 -6 64 44 3 64 25 44 64 48 32 64 21 19 -1.56 -135 0 0 65 0 58 11 31 50.8 3 220 -5 65 10 9 64 51 50 65 14 39 64 47 24 -1.57 -134 0 0 65 26 39 11 31 50.4 2 221 -5 65 35 51 65 17 31 65 40 20 65 13 6 -1.58 -133 0 0 65 51 55 11 31 50.1 2 222 -4 66 1 6 65 42 47 66 5 35 65 38 22 -1.60 -132 0 0 66 16 45 11 31 49.9 1 223 -3 66 25 56 66 7 38 66 30 24 66 3 13 -1.65 -131 0 0 66 41 8 11 31 49.8 1 224 -3 66 50 18 66 32 1 66 54 46 66 27 37 -1.76 -130 0 0 67 5 4 11 31 49.7 0 225 -2 67 14 14 66 55 58 .. .. .. 66 51 34 -2.97 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: TYC 6345-01142-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 00 26.6809 DE: -16 11 02.090 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 00 26.6809 DE: -16 11 02.091 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5204) Herakleitos asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.55110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 date of fit: 2023 Apr 25 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): 0.022", 0.002", 74.244° remarks: * orbital elements for (5204)Herakleitos : Mean anomaly = 202.7468689435 deg Arg. of pericenter = 301.7812134101 deg Long. of node = 175.2910430547 deg Inclination = 0.8705639125 deg Eccentricity = 0.1448068864 Semimajor axis = 3.1349659784 AU Perihelion dist = 2.6810013160 AU Mag: H = 13.10, G = 0.15 Epoch of elements : MJD 60532.48324458 TDT (2024 Aug 10.4832) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Apr25,0.90,2024,8,10,11.597860,-0.245571,0.790554,-7.879098,-2.447811,0.000540,0.000078,0.000001,0.000000 -177.9502,-16.0869,7.36,15.33,False TYC 6345-01142-1,21.00741136,-16.1839140,11.48,11.21,11.06,0.0,0,,21.03066461,-16.0868918,6.88,6.58,0,0,0 5204,Herakleitos,18.09,13.151,2.5511,0,0,-1.884,-8.44,,1.2,0 0,202.6611,2024,8,10,301.7812,175.2910,0.8706,0.14481,3.13497,2.68100,13.10,5.0,0.15 1.243,0.0223,0.0016,74,0.0017,Known errors,0.77,0,-1,-1 20240810_1142-1,60140.24 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:44 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org