IOTA/IOTA-ES occultation update for (393) Lampetia / UCAC4 402-085308 event on 2023 Apr 19, 21:45 UT Visible from India, Africa Summary ------- On 2023 Apr 19 UT, the 129.2 km diameter asteroid (393) Lampetia will occult a 12.5 mag star in the constellation Scutum for observers along a path across India, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.60 mag to 12.12 mag (the magnitude of the asteroid) for at most 7.930 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 Apr 19, 21:40 - 2023 Apr 19, 21:49 * geocentric midpoint of event [JD]: 2460054.40625588 * magnitude of target star: 12.45 * magnitude drop [mag]: 0.60 * estimated maximum duration [s]: 7.930 * Moon: 0 % sunlit, 104° distance * Sun: 107° distance * rough path description: India, Africa The occultation path -------------------- * approximate projected width [km]: 182 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.003", 78°) * approx speed of asteroid's shadow [km/s]: 16.3023 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 402-085308 by 393 Lampetia on 2023 Apr 19 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 20 0 0 .. .. .... .. .. .. .. .. .. 7 1 21 .. .. .. 6 52 29 .. .. .. .... 21 0 0 7 41 13 21 40 23.3 1 100 -67 6 51 38 8 31 32 6 42 47 8 40 40 .... 22 0 0 7 32 20 21 40 23.5 2 100 -67 6 42 50 8 22 33 6 34 0 8 31 40 -0.70 23 0 0 7 24 21 21 40 23.9 3 100 -68 6 34 57 8 14 29 6 26 8 8 23 35 -0.80 24 0 0 7 17 18 21 40 24.5 4 100 -69 6 27 58 8 7 21 6 19 9 8 16 26 -0.85 25 0 0 7 11 9 21 40 25.3 5 100 -69 6 21 53 8 1 9 6 13 5 8 10 13 -0.88 26 0 0 7 5 56 21 40 26.2 6 100 -70 6 16 43 7 55 52 6 7 56 8 4 56 -0.90 27 0 0 7 1 38 21 40 27.3 7 101 -70 6 12 27 7 51 31 6 3 40 8 0 35 -0.92 28 0 0 6 58 15 21 40 28.5 8 101 -71 6 9 5 7 48 7 6 0 19 7 57 10 -0.93 29 0 0 6 55 47 21 40 29.9 9 101 -71 6 6 38 7 45 38 5 57 52 7 54 41 -0.94 30 0 0 6 54 14 21 40 31.5 10 101 -71 6 5 6 7 44 5 5 56 20 7 53 8 -0.94 31 0 0 6 53 37 21 40 33.2 11 101 -71 6 4 28 7 43 28 5 55 42 7 52 31 -0.95 32 0 0 6 53 55 21 40 35.1 12 101 -72 6 4 45 7 43 47 5 55 59 7 52 50 -0.96 33 0 0 6 55 9 21 40 37.2 13 102 -72 6 5 57 7 45 3 5 57 10 7 54 6 -0.96 34 0 0 6 57 18 21 40 39.4 14 102 -72 6 8 4 7 47 15 5 59 17 7 56 19 -0.96 35 0 0 7 0 23 21 40 41.8 15 102 -72 6 11 6 7 50 23 6 2 18 7 59 28 -0.97 36 0 0 7 4 24 21 40 44.3 16 102 -72 6 15 3 7 54 28 6 6 15 8 3 34 -0.97 37 0 0 7 9 22 21 40 47.1 17 102 -71 6 19 56 7 59 31 6 11 7 8 8 37 -0.97 38 0 0 7 15 16 21 40 49.9 18 103 -71 6 25 45 8 5 30 6 16 55 8 14 37 -0.98 39 0 0 7 22 6 21 40 53.0 19 103 -71 6 32 29 8 12 27 6 23 38 8 21 35 -0.98 40 0 0 7 29 54 21 40 56.2 20 103 -70 6 40 10 8 20 21 6 31 18 8 29 31 -0.98 41 0 0 7 38 38 21 40 59.5 21 103 -70 6 48 47 8 29 14 6 39 54 8 38 25 -0.98 42 0 0 7 48 20 21 41 3.0 21 104 -70 6 58 21 8 39 4 6 49 26 8 48 17 -0.98 43 0 0 7 59 0 21 41 6.7 22 104 -69 7 8 52 8 49 53 6 59 55 8 59 7 -0.98 44 0 0 8 10 37 21 41 10.5 23 104 -68 7 20 20 9 1 41 7 11 21 9 10 57 -0.99 45 0 0 8 23 13 21 41 14.5 24 105 -68 7 32 45 9 14 28 7 23 45 9 23 46 -0.99 46 0 0 8 36 47 21 41 18.7 25 105 -67 7 46 8 9 28 14 7 37 6 9 37 34 -0.99 47 0 0 8 51 21 21 41 23.0 26 105 -66 8 0 29 9 42 59 7 51 25 9 52 22 -0.99 48 0 0 9 6 53 21 41 27.5 27 106 -66 8 15 49 9 58 45 8 6 42 10 8 11 -0.99 49 0 0 9 23 25 21 41 32.1 28 106 -65 8 32 7 10 15 32 8 22 58 10 25 0 -0.99 50 0 0 9 40 57 21 41 36.9 29 107 -64 8 49 25 10 33 19 8 40 13 10 42 50 -0.99 51 0 0 9 59 30 21 41 41.8 30 107 -63 9 7 42 10 52 7 8 58 28 11 1 41 -0.99 52 0 0 10 19 3 21 41 46.9 30 108 -62 9 26 59 11 11 58 9 17 42 11 21 34 -0.99 53 0 0 10 39 37 21 41 52.2 31 108 -61 9 47 16 11 32 50 9 37 56 11 42 30 -1.00 54 0 0 11 1 13 21 41 57.6 32 109 -60 10 8 34 11 54 44 9 59 11 12 4 28 -1.00 55 0 0 11 23 50 21 42 3.2 33 109 -59 10 30 53 12 17 42 10 21 26 12 27 29 -1.00 56 0 0 11 47 30 21 42 8.9 34 110 -58 10 54 13 12 41 42 10 44 43 12 51 33 -1.00 57 0 0 12 12 13 21 42 14.8 35 111 -57 11 18 34 13 6 47 11 9 1 13 16 42 -1.00 58 0 0 12 37 58 21 42 20.8 35 112 -56 11 43 58 13 32 55 11 34 21 13 42 54 -1.00 59 0 0 13 4 47 21 42 27.0 36 112 -55 12 10 25 14 0 8 12 0 44 14 10 12 -1.00 60 0 0 13 32 40 21 42 33.3 37 113 -54 12 37 54 14 28 26 12 28 9 14 38 34 -1.00 61 0 0 14 1 37 21 42 39.7 38 114 -53 13 6 26 14 57 48 12 56 37 15 8 2 -1.00 62 0 0 14 31 38 21 42 46.3 38 115 -52 13 36 2 15 28 17 13 26 8 15 38 35 -1.00 63 0 0 15 2 44 21 42 53.1 39 116 -51 14 6 41 15 59 51 13 56 43 16 10 15 -1.00 64 0 0 15 34 56 21 43 0.0 40 117 -50 14 38 25 16 32 32 14 28 21 16 43 1 -1.00 65 0 0 16 8 12 21 43 7.0 40 118 -49 15 11 12 17 6 19 15 1 4 17 16 54 -1.00 66 0 0 16 42 34 21 43 14.1 41 119 -48 15 45 4 17 41 13 15 34 50 17 51 53 -1.00 67 0 0 17 18 2 21 43 21.4 41 120 -47 16 20 1 18 17 14 16 9 42 18 28 0 -1.00 68 0 0 17 54 36 21 43 28.8 42 122 -45 16 56 2 18 54 21 16 45 38 19 5 15 -1.00 69 0 0 18 32 15 21 43 36.4 42 123 -44 17 33 8 19 32 37 17 22 38 19 43 36 -1.00 70 0 0 19 11 1 21 43 44.0 43 124 -43 18 11 19 20 11 59 18 0 43 20 23 6 -1.00 71 0 0 19 50 52 21 43 51.8 43 126 -42 18 50 35 20 52 29 18 39 52 21 3 43 -1.00 72 0 0 20 31 50 21 43 59.6 44 127 -41 19 30 55 21 34 6 19 20 6 21 45 27 -1.00 73 0 0 21 13 53 21 44 7.6 44 128 -40 20 12 20 22 16 50 20 1 24 22 28 19 -1.00 74 0 0 21 57 2 21 44 15.6 44 130 -38 20 54 49 23 0 41 20 43 46 23 12 18 -1.00 75 0 0 22 41 15 21 44 23.8 45 131 -37 21 38 22 23 45 39 21 27 12 23 57 24 -1.00 76 0 0 23 26 34 21 44 32.0 45 133 -36 22 22 58 24 31 42 22 11 41 24 43 36 -1.00 77 0 0 24 12 57 21 44 40.3 45 135 -35 23 8 37 25 18 52 22 57 13 25 30 54 -1.00 78 0 0 25 0 23 21 44 48.7 45 136 -34 23 55 19 26 7 7 23 43 46 26 19 18 -1.00 79 0 0 25 48 52 21 44 57.1 45 138 -32 24 43 2 26 56 26 24 31 21 27 8 46 -1.00 80 0 0 26 38 23 21 45 5.6 45 140 -31 25 31 45 27 46 48 25 19 57 27 59 18 -1.00 81 0 0 27 28 55 21 45 14.1 45 141 -30 26 21 28 28 38 12 26 9 31 28 50 52 -1.00 82 0 0 28 20 26 21 45 22.6 45 143 -29 27 12 10 29 30 36 27 0 4 29 43 27 -1.00 83 0 0 29 12 54 21 45 31.2 45 145 -27 28 3 47 30 24 1 27 51 33 30 37 3 -1.00 84 0 0 30 6 20 21 45 39.7 44 147 -26 28 56 19 31 18 25 28 43 56 31 31 37 -1.00 85 0 0 31 0 41 21 45 48.3 44 148 -25 29 49 47 32 13 45 29 37 14 32 27 9 -1.00 86 0 0 31 55 56 21 45 56.8 44 150 -24 30 44 6 33 10 0 30 31 24 33 23 35 -1.00 87 0 0 32 52 1 21 46 5.3 43 152 -22 31 39 15 34 7 7 31 26 23 34 20 54 -1.00 88 0 0 33 48 56 21 46 13.8 43 154 -21 32 35 12 35 5 5 32 22 10 35 19 3 -1.00 89 0 0 34 46 36 21 46 22.2 42 155 -20 33 31 54 36 3 50 33 18 42 36 18 1 -1.00 90 0 0 35 45 0 21 46 30.5 42 157 -19 34 29 18 37 3 20 34 15 56 37 17 44 -0.99 91 0 0 36 44 5 21 46 38.8 41 158 -18 35 27 22 38 3 32 35 13 50 38 18 9 -0.99 92 0 0 37 43 48 21 46 47.0 41 160 -16 36 26 3 39 4 23 36 12 21 39 19 13 -0.99 93 0 0 38 44 4 21 46 55.0 40 162 -15 37 25 18 40 5 49 37 11 25 40 20 52 -0.99 94 0 0 39 44 52 21 47 3.0 39 163 -14 38 25 2 41 7 46 38 10 59 41 23 3 -0.99 95 0 0 40 46 5 21 47 10.8 39 165 -13 39 25 13 42 10 11 39 10 59 42 25 41 -0.99 96 0 0 41 47 42 21 47 18.5 38 166 -12 40 25 46 43 12 59 40 11 21 43 28 43 -0.99 97 0 0 42 49 37 21 47 25.9 37 168 -10 41 26 38 44 16 6 41 12 2 44 32 4 -0.99 98 0 0 43 51 46 21 47 33.3 36 169 -9 42 27 43 45 19 27 42 12 57 45 35 39 -0.99 99 0 0 44 54 5 21 47 40.4 35 170 -8 43 28 59 46 22 58 43 14 2 46 39 24 -0.99 100 0 0 45 56 28 21 47 47.4 34 172 -7 44 30 19 47 26 33 44 15 12 47 43 14 -0.99 101 0 0 46 58 52 21 47 54.1 33 173 -6 45 31 40 48 30 8 45 16 23 48 47 2 -0.99 102 0 0 48 1 10 21 48 0.6 32 174 -5 46 32 57 49 33 36 46 17 29 49 50 45 -0.99 103 0 0 49 3 17 21 48 6.9 31 176 -4 47 34 5 50 36 53 47 18 27 50 54 15 -1.00 104 0 0 50 5 9 21 48 13.0 30 177 -3 48 34 58 51 39 53 48 19 10 51 57 28 -1.00 105 0 0 51 6 39 21 48 18.8 29 178 -2 49 35 32 52 42 29 49 19 35 53 0 17 -1.00 106 0 0 52 7 44 21 48 24.4 28 179 -1 50 35 42 53 44 37 50 19 36 54 2 37 -1.00 107 0 0 53 8 16 21 48 29.8 27 180 0 51 35 22 54 46 10 51 19 8 55 4 23 -1.00 108 0 0 54 8 11 21 48 34.9 26 181 1 52 34 28 55 47 2 52 18 6 56 5 27 -1.00 109 0 0 55 7 23 21 48 39.7 25 183 2 53 32 55 56 47 9 53 16 25 57 5 44 -1.00 110 0 0 56 5 48 21 48 44.3 24 184 2 54 30 38 57 46 24 54 14 1 58 5 9 -1.00 111 0 0 57 3 20 21 48 48.6 23 185 3 55 27 32 58 44 42 55 10 49 59 3 37 -1.00 112 0 0 57 59 56 21 48 52.7 22 186 4 56 23 33 59 41 58 56 6 44 60 1 1 -1.00 113 0 0 58 55 29 21 48 56.5 21 187 5 57 18 37 60 38 8 57 1 43 60 57 18 -1.00 114 0 0 59 49 57 21 49 0.1 20 188 5 58 12 39 61 33 6 57 55 42 61 52 22 -1.00 115 0 0 60 43 15 21 49 3.5 19 189 6 59 5 37 62 26 48 58 48 36 62 46 10 -1.00 116 0 0 61 35 20 21 49 6.6 19 190 7 59 57 27 63 19 12 59 40 24 63 38 37 -1.00 117 0 0 62 26 8 21 49 9.5 18 191 7 60 48 6 64 10 12 60 31 1 64 29 40 -1.00 118 0 0 63 15 38 21 49 12.2 17 192 8 61 37 30 64 59 48 61 20 25 65 19 17 -1.00 119 0 0 64 3 46 21 49 14.7 16 193 9 62 25 39 65 47 56 62 8 34 66 7 24 -1.00 120 0 0 64 50 31 21 49 17.0 15 194 9 63 12 30 66 34 34 62 55 25 66 54 1 -1.00 121 0 0 65 35 51 21 49 19.1 14 195 10 63 58 1 67 19 41 63 40 59 67 39 6 -1.01 122 0 0 66 19 45 21 49 21.0 13 196 10 64 42 13 68 3 16 64 25 13 68 22 38 -1.01 123 0 0 67 2 14 21 49 22.7 13 197 11 65 25 3 68 45 20 65 8 6 69 4 36 -1.01 124 0 0 67 43 16 21 49 24.3 12 198 11 66 6 31 69 25 51 65 49 39 69 45 1 -1.01 125 0 0 68 22 52 21 49 25.8 11 199 11 66 46 38 70 4 50 66 29 51 70 23 53 -1.01 126 0 0 69 1 2 21 49 27.1 10 200 12 67 25 23 70 42 19 67 8 42 71 1 14 -1.01 127 0 0 69 37 48 21 49 28.3 10 201 12 68 2 48 71 18 19 67 46 14 71 37 4 -1.01 128 0 0 70 13 10 21 49 29.3 9 202 13 68 38 54 71 52 50 68 22 26 72 11 25 -1.01 129 0 0 70 47 10 21 49 30.3 8 203 13 69 13 40 72 25 56 68 57 21 72 44 20 -1.01 130 0 0 71 19 50 21 49 31.1 8 203 13 69 47 10 72 57 38 69 30 58 73 15 50 -1.01 131 0 0 71 51 12 21 49 31.8 7 204 13 70 19 24 73 27 58 70 3 21 73 45 59 -1.01 132 0 0 72 21 17 21 49 32.5 6 205 14 70 50 24 73 56 59 70 34 30 74 14 47 -1.01 133 0 0 72 50 8 21 49 33.1 6 206 14 71 20 12 74 24 44 71 4 28 74 42 19 -1.01 134 0 0 73 17 47 21 49 33.6 5 207 14 71 48 50 74 51 15 71 33 15 75 8 37 -1.01 135 0 0 73 44 16 21 49 34.0 5 208 14 72 16 19 75 16 35 72 0 55 75 33 43 -1.01 136 0 0 74 9 39 21 49 34.4 4 209 15 72 42 43 75 40 47 72 27 29 75 57 41 -1.01 137 0 0 74 33 57 21 49 34.8 4 210 15 73 8 3 76 3 54 72 52 59 76 20 34 -1.01 138 0 0 74 57 12 21 49 35.0 3 211 15 73 32 22 76 25 58 73 17 28 76 42 24 -1.01 139 0 0 75 19 28 21 49 35.3 3 212 15 73 55 41 76 47 2 73 40 58 77 3 14 -1.02 140 0 0 75 40 47 21 49 35.5 2 213 15 74 18 3 77 7 8 74 3 31 77 23 6 -1.02 141 0 0 76 1 11 21 49 35.6 2 214 15 74 39 30 77 26 20 74 25 8 77 42 4 -1.02 142 0 0 76 20 42 21 49 35.7 2 215 16 75 0 4 77 44 40 74 45 53 78 0 10 -1.02 143 0 0 76 39 23 21 49 35.8 1 216 16 75 19 47 78 2 11 75 5 47 .. .. .. -1.02 144 0 0 76 57 15 21 49 35.9 1 217 16 75 38 42 .. .. .. 75 24 52 .. .. .. -1.02 145 0 0 77 14 22 21 49 35.9 1 218 16 75 56 50 .. .. .. 75 43 11 .. .. .. -1.03 146 0 0 77 30 44 21 49 36.0 0 219 16 76 14 13 .. .. .. 76 0 44 .. .. .. -1.08 147 0 0 .. .. .... .. .. .. .. .. .. 76 30 54 .. .. .. 76 17 34 .. .. .. .... 148 0 0 .. .. .... .. .. .. .. .. .. 76 46 53 .. .. .. 76 33 44 .. .. .. .... 149 0 0 .. .. .... .. .. .. .. .. .. 77 2 13 .. .. .. 76 49 14 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Mar 1.1 Data for the target star ------------------------ * name: UCAC4 402-085308 * constellation : Scutum * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 44 59.9624 DE: -09 36 31.739 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 44 59.9624 DE: -09 36 31.739 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (393) Lampetia asteroid class: approx. diameter [km]: 129 approx. diameter ["]: 0.119 distance from Earth [AU]: 1.49940 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#126 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): 0.024", 0.003", 78.088° remarks: * orbital elements for (393)Lampetia : Mean anomaly = 335.0490299357 deg Arg. of pericenter = 90.8669722075 deg Long. of node = 212.3931411467 deg Inclination = 14.8773253188 deg Eccentricity = 0.3299844573 Semimajor axis = 2.7797231872 AU Perihelion dist = 1.8624577397 AU Mag: H = 8.43, G = 0.15 Epoch of elements : MJD 60053.90625000 TDT (2023 Apr 19.9063) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1262023Feb07,7.93,2023,4,19,21.750141,-0.424231,0.563713,7.350833,5.534633,-0.004991,-0.000787,0.000000,0.000000 107.5848,-9.5867,-146.48,11.32,False UCAC4 402-085308,18.74998952,-9.6088164,0.00,12.45,0.00,0.0,4,,18.77125154,-9.5866700,0.60,0.00,0,0,1 393,Lampetia,12.12,129.2,1.4994,0,0,2.915,32.47,,8.4,0 0,334.8563,2023,4,19,90.8670,212.3931,14.8773,0.32998,2.77972,1.86246,8.45,5.0,0.15 1.090,0.0243,0.0031,78,0.0107,Known errors,-1.00,-1,-1,-1 20230419_085308,60004.05 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Mar 01, 01:18 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org