IOTA/IOTA-ES occultation update for (8454) Micheleferrero / TYC 6881-01288-1 event on 2024 Oct 02, 23:58 UT Visible from Summary ------- On 2024 Oct 02 UT, the 10.256 km diameter asteroid (8454) Micheleferrero will occult a 10.9 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 7.70 mag to 18.57 mag (the magnitude of the asteroid) for at most 0.610 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 Oct 02, 23:54 - 2024 Oct 03, 00:03 * geocentric midpoint of event [JD]: 2460586.49923841 * magnitude of target star: 10.87 * magnitude drop [mag]: 7.70 * estimated maximum duration [s]: 0.610 * Moon: 0 % sunlit, 91° distance * Sun: 93° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 0.33 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.001", 84°) * approx speed of asteroid's shadow [km/s]: 16.7659 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6881-01288-1 by 8454 Micheleferrero on 2024 Oct 2 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 -158 0 0 .. .. .... .. .. .. .. .. .. 30 59 16 .. .. .. 30 56 10 .. .. .. .... -157 0 0 30 32 34 23 54 36.7 1 122 48 30 27 49 30 37 19 30 24 44 30 40 25 .... -156 0 0 30 1 37 23 54 36.9 2 122 48 29 56 54 30 6 21 29 53 50 30 9 26 -0.68 -155 0 0 29 31 14 23 54 37.3 3 123 48 29 26 33 29 35 56 29 23 30 29 39 0 -0.81 -154 0 0 29 1 25 23 54 37.9 4 123 48 28 56 45 29 6 6 28 53 43 29 9 8 -0.88 -153 0 0 28 32 10 23 54 38.7 5 124 48 28 27 32 28 36 49 28 24 31 28 39 51 -0.92 -152 0 0 28 3 31 23 54 39.6 6 124 47 27 58 54 28 8 8 27 55 54 28 11 9 -0.94 -151 0 0 27 35 28 23 54 40.7 7 125 47 27 30 52 27 40 4 27 27 54 27 43 3 -0.96 -150 0 0 27 8 1 23 54 42.0 8 125 47 27 3 27 27 12 36 27 0 29 27 15 34 -0.98 -149 0 0 26 41 12 23 54 43.4 9 126 46 26 36 39 26 45 45 26 33 42 26 48 43 -0.99 -148 0 0 26 15 0 23 54 45.1 10 126 46 26 10 29 26 19 32 26 7 33 26 22 29 -1.00 -147 0 0 25 49 27 23 54 46.8 11 127 45 25 44 57 25 53 57 25 42 2 25 56 53 -1.01 -146 0 0 25 24 33 23 54 48.8 12 127 45 25 20 4 25 29 2 25 17 10 25 31 57 -1.01 -145 0 0 25 0 18 23 54 50.9 13 128 44 24 55 51 25 4 46 24 52 57 25 7 40 -1.02 -144 0 0 24 36 43 23 54 53.1 14 128 44 24 32 17 24 41 9 24 29 24 24 44 3 -1.02 -143 0 0 24 13 48 23 54 55.5 15 129 43 24 9 23 24 18 13 24 6 31 24 21 6 -1.03 -142 0 0 23 51 34 23 54 58.1 16 129 43 23 47 10 23 55 57 23 44 19 23 58 49 -1.03 -141 0 0 23 30 0 23 55 0.8 17 130 42 23 25 38 23 34 23 23 22 47 23 37 14 -1.04 -140 0 0 23 9 8 23 55 3.7 18 130 41 23 4 47 23 13 30 23 1 57 23 16 20 -1.04 -139 0 0 22 48 58 23 55 6.7 19 131 41 22 44 38 22 53 19 22 41 49 22 56 8 -1.04 -138 0 0 22 29 30 23 55 9.8 19 131 40 22 25 10 22 33 49 22 22 22 22 36 38 -1.04 -137 0 0 22 10 43 23 55 13.1 20 132 39 22 6 25 22 15 2 22 3 37 22 17 50 -1.05 -136 0 0 21 52 40 23 55 16.6 21 132 38 21 48 22 21 56 57 21 45 35 21 59 45 -1.05 -135 0 0 21 35 19 23 55 20.1 22 133 38 21 31 2 21 39 36 21 28 16 21 42 23 -1.05 -134 0 0 21 18 41 23 55 23.9 23 133 37 21 14 25 21 22 57 21 11 39 21 25 44 -1.05 -133 0 0 21 2 46 23 55 27.7 24 134 36 20 58 32 21 7 1 20 55 46 21 9 47 -1.05 -132 0 0 20 47 35 23 55 31.7 25 135 35 20 43 21 20 51 49 20 40 36 20 54 35 -1.06 -131 0 0 20 33 7 23 55 35.8 26 135 35 20 28 54 20 37 21 20 26 10 20 40 6 -1.06 -130 0 0 20 19 23 23 55 40.0 26 136 34 20 15 11 20 23 36 20 12 27 20 26 21 -1.06 -129 0 0 20 6 23 23 55 44.3 27 136 33 20 2 11 20 10 35 19 59 28 20 13 20 -1.06 -128 0 0 19 54 7 23 55 48.8 28 137 32 19 49 56 19 58 19 19 47 13 20 1 2 -1.06 -127 0 0 19 42 35 23 55 53.3 29 138 31 19 38 25 19 46 46 19 35 42 19 49 30 -1.06 -126 0 0 19 31 48 23 55 58.0 30 138 30 19 27 38 19 35 58 19 24 55 19 38 41 -1.07 -125 0 0 19 21 45 23 56 2.8 30 139 30 19 17 35 19 25 54 19 14 53 19 28 37 -1.07 -124 0 0 19 12 26 23 56 7.7 31 140 29 19 8 17 19 16 35 19 5 35 19 19 18 -1.07 -123 0 0 19 3 52 23 56 12.7 32 140 28 18 59 43 19 8 1 18 57 2 19 10 43 -1.07 -122 0 0 18 56 3 23 56 17.8 33 141 27 18 51 55 19 0 11 18 49 13 19 2 53 -1.07 -121 0 0 18 48 59 23 56 23.0 33 142 26 18 44 51 18 53 7 18 42 10 18 55 48 -1.07 -120 0 0 18 42 39 23 56 28.3 34 143 25 18 38 31 18 46 47 18 35 51 18 49 28 -1.07 -119 0 0 18 37 5 23 56 33.7 35 144 24 18 32 57 18 41 12 18 30 16 18 43 53 -1.07 -118 0 0 18 32 15 23 56 39.1 35 144 23 18 28 8 18 36 22 18 25 27 18 39 4 -1.08 -117 0 0 18 28 11 23 56 44.7 36 145 22 18 24 4 18 32 18 18 21 23 18 34 59 -1.08 -116 0 0 18 24 51 23 56 50.3 36 146 21 18 20 45 18 28 59 18 18 4 18 31 39 -1.08 -115 0 0 18 22 17 23 56 56.0 37 147 20 18 18 11 18 26 24 18 15 31 18 29 5 -1.08 -114 0 0 18 20 29 23 57 1.8 38 148 19 18 16 22 18 24 36 18 13 42 18 27 16 -1.08 -113 0 0 18 19 25 23 57 7.6 38 149 18 18 15 19 18 23 32 18 12 39 18 26 13 -1.08 -112 0 0 18 19 7 23 57 13.5 39 150 18 18 15 1 18 23 14 18 12 21 18 25 55 -1.08 -111 0 0 18 19 35 23 57 19.5 39 151 17 18 15 28 18 23 42 18 12 48 18 26 22 -1.08 -110 0 0 18 20 47 23 57 25.6 40 152 16 18 16 41 18 24 55 18 14 1 18 27 35 -1.08 -109 0 0 18 22 46 23 57 31.7 40 153 15 18 18 39 18 26 53 18 15 59 18 29 34 -1.08 -108 0 0 18 25 30 23 57 37.8 40 154 14 18 21 23 18 29 37 18 18 42 18 32 18 -1.08 -107 0 0 18 28 59 23 57 44.0 41 155 13 18 24 52 18 33 6 18 22 11 18 35 48 -1.08 -106 0 0 18 33 14 23 57 50.3 41 156 12 18 29 6 18 37 21 18 26 25 18 40 3 -1.08 -105 0 0 18 38 14 23 57 56.6 41 158 11 18 34 6 18 42 22 18 31 25 18 45 4 -1.08 -104 0 0 18 44 0 23 58 2.9 42 159 10 18 39 52 18 48 8 18 37 11 18 50 50 -1.08 -103 0 0 18 50 31 23 58 9.3 42 160 9 18 46 23 18 54 40 18 43 41 18 57 22 -1.08 -102 0 0 18 57 48 23 58 15.7 42 161 8 18 53 39 19 1 57 18 50 58 19 4 40 -1.09 -101 0 0 19 5 51 23 58 22.2 42 162 7 19 1 41 19 10 0 18 58 59 19 12 43 -1.09 -100 0 0 19 14 39 23 58 28.7 42 163 6 19 10 29 19 18 49 19 7 47 19 21 32 -1.09 - 99 0 0 19 24 12 23 58 35.2 42 165 5 19 20 2 19 28 23 19 17 19 19 31 6 -1.09 - 98 0 0 19 34 31 23 58 41.7 43 166 4 19 30 20 19 38 42 19 27 37 19 41 26 -1.09 - 97 0 0 19 45 36 23 58 48.2 43 167 3 19 41 24 19 49 48 19 38 41 19 52 32 -1.09 - 96 0 0 19 57 26 23 58 54.8 43 168 2 19 53 13 20 1 38 19 50 30 20 4 23 -1.09 - 95 0 0 20 10 1 23 59 1.3 43 170 1 20 5 48 20 14 14 20 3 4 20 16 59 -1.09 - 94 0 0 20 23 21 23 59 7.9 43 171 0 20 19 7 20 27 35 20 16 23 20 30 20 -1.09 - 93 0 0 20 37 26 23 59 14.5 42 172 -1 20 33 12 20 41 41 20 30 27 20 44 27 -1.09 - 92 0 0 20 52 17 23 59 21.0 42 173 -2 20 48 1 20 56 32 20 45 16 20 59 19 -1.09 - 91 0 0 21 7 52 23 59 27.6 42 175 -3 21 3 36 21 12 8 21 0 49 21 14 55 -1.09 - 90 0 0 21 24 12 23 59 34.1 42 176 -4 21 19 55 21 28 29 21 17 8 21 31 17 -1.09 - 89 0 0 21 41 17 23 59 40.6 42 177 -5 21 36 59 21 45 35 21 34 11 21 48 23 -1.09 - 88 0 0 21 59 6 23 59 47.1 41 178 -6 21 54 47 22 3 25 21 51 58 22 6 14 -1.09 - 87 0 0 22 17 39 23 59 53.6 41 180 -7 22 13 19 22 21 59 22 10 30 22 24 49 -1.09 - 86 0 0 22 36 56 0 0 0.1 + 41 181 -8 22 32 35 22 41 18 22 29 46 22 44 8 -1.09 - 85 0 0 22 56 58 0 0 6.5 + 41 182 -9 22 52 36 23 1 20 22 49 45 23 4 11 -1.09 - 84 0 0 23 17 43 0 0 12.9 + 40 183 -10 23 13 19 23 22 6 23 10 28 23 24 58 -1.09 - 83 0 0 23 39 11 0 0 19.2 + 40 184 -11 23 34 46 23 43 35 23 31 54 23 46 28 -1.09 - 82 0 0 24 1 22 0 0 25.5 + 39 186 -12 23 56 56 24 5 48 23 54 3 24 8 41 -1.09 - 81 0 0 24 24 15 0 0 31.7 + 39 187 -12 24 19 48 24 28 43 24 16 55 24 31 37 -1.09 - 80 0 0 24 47 51 0 0 37.9 + 38 188 -13 24 43 23 24 52 20 24 40 29 24 55 15 -1.09 - 79 0 0 25 12 9 0 0 44.0 + 38 189 -14 25 7 40 25 16 39 25 4 45 25 19 35 -1.09 - 78 0 0 25 37 9 0 0 50.1 + 37 190 -15 25 32 38 25 41 40 25 29 42 25 44 37 -1.08 - 77 0 0 26 2 50 0 0 56.0 + 37 191 -16 25 58 17 26 7 22 25 55 20 26 10 20 -1.08 - 76 0 0 26 29 11 0 1 1.9 + 36 192 -17 26 24 37 26 33 45 26 21 39 26 36 44 -1.08 - 75 0 0 26 56 12 0 1 7.8 + 35 193 -18 26 51 36 27 0 48 26 48 38 27 3 47 -1.08 - 74 0 0 27 23 52 0 1 13.5 + 35 194 -19 27 19 15 27 28 30 27 16 16 27 31 30 -1.08 - 73 0 0 27 52 12 0 1 19.1 + 34 195 -20 27 47 33 27 56 51 27 44 32 27 59 52 -1.08 - 72 0 0 28 21 9 0 1 24.7 + 33 196 -20 28 16 29 28 25 50 28 13 27 28 28 52 -1.08 - 71 0 0 28 50 44 0 1 30.1 + 33 197 -21 28 46 3 28 55 26 28 43 0 28 58 30 -1.08 - 70 0 0 29 20 56 0 1 35.5 + 32 198 -22 29 16 13 29 25 40 29 13 9 29 28 45 -1.08 - 69 0 0 29 51 44 0 1 40.7 + 31 199 -23 29 46 59 29 56 29 29 43 54 29 59 35 -1.08 - 68 0 0 30 23 7 0 1 45.8 + 30 200 -24 30 18 20 30 27 54 30 15 14 30 31 1 -1.08 - 67 0 0 30 55 4 0 1 50.9 + 29 201 -24 30 50 16 30 59 53 30 47 8 31 3 1 -1.08 - 66 0 0 31 27 35 0 1 55.7 + 29 202 -25 31 22 45 31 32 26 31 19 36 31 35 35 -1.08 - 65 0 0 32 0 38 0 2 0.5 + 28 203 -26 31 55 46 32 5 31 31 52 36 32 8 41 -1.08 - 64 0 0 32 34 13 0 2 5.1 + 27 203 -27 32 29 19 32 39 7 32 26 8 32 42 19 -1.08 - 63 0 0 33 8 18 0 2 9.6 + 26 204 -27 33 3 22 33 13 14 33 0 10 33 16 27 -1.08 - 62 0 0 33 42 52 0 2 13.9 + 25 205 -28 33 37 54 33 47 50 33 34 41 33 51 4 -1.08 - 61 0 0 34 17 54 0 2 18.1 + 24 206 -29 34 12 55 34 22 54 34 9 40 34 26 10 -1.08 - 60 0 0 34 53 24 0 2 22.2 + 23 207 -29 34 48 22 34 58 26 34 45 7 35 1 42 -1.08 - 59 0 0 35 29 19 0 2 26.1 + 22 207 -30 35 24 15 35 34 22 35 20 58 35 37 40 -1.08 - 58 0 0 36 5 38 0 2 29.8 + 22 208 -31 36 0 33 36 10 44 35 57 14 36 14 3 -1.08 - 57 0 0 36 42 20 0 2 33.4 + 21 209 -31 36 37 13 36 47 28 36 33 53 36 50 48 -1.08 - 56 0 0 37 19 24 0 2 36.9 + 20 210 -32 37 14 15 37 24 33 37 10 54 37 27 55 -1.08 - 55 0 0 37 56 47 0 2 40.1 + 19 210 -32 37 51 36 38 1 59 37 48 14 38 5 22 -1.08 - 54 0 0 38 34 30 0 2 43.2 + 18 211 -33 38 29 17 38 39 43 38 25 54 38 43 8 -1.09 - 53 0 0 39 12 29 0 2 46.2 + 17 212 -33 39 7 14 39 17 45 39 3 50 39 21 10 -1.09 - 52 0 0 39 50 44 0 2 49.0 + 16 213 -34 39 45 27 39 56 1 39 42 1 39 59 28 -1.09 - 51 0 0 40 29 13 0 2 51.6 + 15 213 -34 40 23 54 40 34 32 40 20 27 40 38 0 -1.09 - 50 0 0 41 7 53 0 2 54.0 + 14 214 -34 41 2 33 41 13 15 40 59 4 41 16 44 -1.09 - 49 0 0 41 46 45 0 2 56.3 + 13 215 -35 41 41 22 41 52 8 41 37 53 41 55 39 -1.09 - 48 0 0 42 25 44 0 2 58.4 + 12 216 -35 42 20 20 42 31 10 42 16 49 42 34 42 -1.09 - 47 0 0 43 4 51 0 3 0.3 + 11 216 -35 42 59 25 43 10 18 42 55 53 43 13 52 -1.09 - 46 0 0 43 44 4 0 3 2.0 + 10 217 -36 43 38 35 43 49 32 43 35 2 43 53 7 -1.09 - 45 0 0 44 23 19 0 3 3.6 + 9 218 -36 44 17 49 44 28 50 44 14 15 44 32 25 -1.10 - 44 0 0 45 2 36 0 3 5.1 + 8 219 -36 44 57 5 45 8 9 44 53 29 45 11 45 -1.10 - 43 0 0 45 41 53 0 3 6.3 + 7 219 -36 45 36 20 45 47 27 45 32 44 45 51 5 -1.10 - 42 0 0 46 21 8 0 3 7.4 + 6 220 -36 46 15 33 46 26 44 46 11 56 46 30 23 -1.11 - 41 0 0 47 0 19 0 3 8.3 + 5 221 -36 46 54 42 47 5 56 46 51 4 47 9 36 -1.11 - 40 0 0 47 39 24 0 3 9.1 + 4 221 -36 47 33 46 47 45 3 47 30 7 47 48 44 -1.12 - 39 0 0 48 18 22 0 3 9.7 + 4 222 -36 48 12 42 48 24 2 48 9 2 48 27 44 -1.13 - 38 0 0 48 57 10 0 3 10.2 + 3 223 -36 48 51 29 49 2 52 48 47 48 49 6 35 -1.16 - 37 0 0 49 35 47 0 3 10.5 + 2 224 -36 49 30 5 49 41 30 49 26 23 49 45 14 -1.20 - 36 0 0 50 14 12 0 3 10.7 + 1 225 -36 50 8 28 50 19 56 50 4 45 50 23 40 -1.35 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6881-01288-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 00 06.0826 DE: -26 38 52.509 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 00 06.0823 DE: -26 38 52.510 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.9 * B mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (8454) Micheleferrero asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.24110 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#41 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): 0.013", 0.001", 84.025° remarks: * orbital elements for (8454)Micheleferrero : Mean anomaly = 50.5280389205 deg Arg. of pericenter = 228.3430800358 deg Long. of node = 21.6763586370 deg Inclination = 3.6150392709 deg Eccentricity = 0.0681297335 Semimajor axis = 2.6148748046 AU Perihelion dist = 2.4367240811 AU Mag: H = 13.71, G = 0.15 Epoch of elements : MJD 60585.99923838 TDT (2024 Oct 02.9992) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#412023Apr25,0.61,2024,10,2,23.981722,-0.156530,0.718386,9.244670,2.021765,0.005621,0.000622,0.000000,0.000000 -86.5067,-26.6148,177.53,-4.07,False TYC 6881-01288-1,19.00168964,-26.6479192,11.18,10.87,10.70,0.0,0,,19.02727212,-26.6147740,7.70,7.42,0,0,0 8454,Micheleferrero,18.57,10.256,2.2411,0,0,2.705,7.93,,0.8,0 0,50.2951,2024,10,2,228.3431,21.6764,3.6150,0.06813,2.61487,2.43672,13.71,5.0,0.15 1.325,0.0130,0.0015,84,0.0021,Known errors,1.05,0,-1,-1 20241002_1288-1,60140.61 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:32 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org