IOTA/IOTA-ES occultation update for (393) Lampetia / 2UCAC 28968942 event on 2023 Apr 26, 19:41 UT Visible from Australia Summary ------- On 2023 Apr 26 UT, the 129.2 km diameter asteroid (393) Lampetia will occult a 12.4 mag star in the constellation Scutum for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.55 mag to 11.96 mag (the magnitude of the asteroid) for at most 8.830 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 Apr 26, 19:34 - 2023 Apr 26, 19:48 * geocentric midpoint of event [JD]: 2460061.32062338 * magnitude of target star: 12.40 * magnitude drop [mag]: 0.55 * estimated maximum duration [s]: 8.830 * Moon: 39 % sunlit, 157° distance * Sun: 112° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 142 * 1 sigma uncertainty interval [path widths]: +/- 0.11 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.025, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.003", 78°) * approx speed of asteroid's shadow [km/s]: 14.6327 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of 2UCAC 28968942 by 393 Lampetia on 2023 Apr 26 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 27 0 0 -65 52 8 19 35 6.1 0 110 -32 -66 32 58 .. .. .. -66 41 39 .. .. .. .... 28 0 0 -66 0 48 19 35 6.1 0 109 -32 -66 41 26 -65 20 23 -66 50 5 -65 11 51 0.44 29 0 0 -66 9 4 19 35 6.1 1 108 -32 -66 49 31 -65 28 50 -66 58 8 -65 20 20 0.45 30 0 0 -66 16 57 19 35 6.2 1 107 -32 -66 57 15 -65 36 53 -67 5 49 -65 28 25 0.45 31 0 0 -66 24 28 19 35 6.3 2 106 -32 -67 4 36 -65 44 33 -67 13 8 -65 36 7 0.45 32 0 0 -66 31 37 19 35 6.4 2 105 -33 -67 11 35 -65 51 51 -67 20 5 -65 43 27 0.45 33 0 0 -66 38 24 19 35 6.6 3 104 -33 -67 18 13 -65 58 47 -67 26 41 -65 50 25 0.45 34 0 0 -66 44 49 19 35 6.7 3 103 -33 -67 24 30 -66 5 21 -67 32 57 -65 57 0 0.45 35 0 0 -66 50 54 19 35 6.9 3 102 -33 -67 30 27 -66 11 34 -67 38 52 -66 3 15 0.45 36 0 0 -66 56 38 19 35 7.2 4 102 -33 -67 36 3 -66 17 25 -67 44 26 -66 9 8 0.45 37 0 0 -67 2 1 19 35 7.4 4 101 -33 -67 41 19 -66 22 56 -67 49 41 -66 14 40 0.45 38 0 0 -67 7 5 19 35 7.6 5 100 -33 -67 46 16 -66 28 6 -67 54 36 -66 19 51 0.45 39 0 0 -67 11 48 19 35 7.9 5 99 -34 -67 50 53 -66 32 55 -67 59 12 -66 24 42 0.45 40 0 0 -67 16 12 19 35 8.2 5 98 -34 -67 55 11 -66 37 25 -68 3 28 -66 29 13 0.45 41 0 0 -67 20 16 19 35 8.6 6 97 -34 -67 59 10 -66 41 35 -68 7 26 -66 33 24 0.45 42 0 0 -67 24 1 19 35 8.9 6 96 -34 -68 2 50 -66 45 25 -68 11 5 -66 37 15 0.45 43 0 0 -67 27 28 19 35 9.3 7 95 -34 -68 6 11 -66 48 56 -68 14 25 -66 40 47 0.45 44 0 0 -67 30 35 19 35 9.6 7 94 -34 -68 9 14 -66 52 7 -68 17 27 -66 43 59 0.45 45 0 0 -67 33 23 19 35 10.1 7 93 -34 -68 11 59 -66 55 0 -68 20 11 -66 46 53 0.45 46 0 0 -67 35 53 19 35 10.5 8 92 -35 -68 14 25 -66 57 33 -68 22 37 -66 49 27 0.45 47 0 0 -67 38 5 19 35 10.9 8 91 -35 -68 16 34 -66 59 48 -68 24 45 -66 51 42 0.45 48 0 0 -67 39 58 19 35 11.4 9 90 -35 -68 18 24 -67 1 44 -68 26 35 -66 53 38 0.45 49 0 0 -67 41 33 19 35 11.9 9 90 -35 -68 19 57 -67 3 21 -68 28 7 -66 55 16 0.45 50 0 0 -67 42 50 19 35 12.4 9 89 -35 -68 21 12 -67 4 39 -68 29 21 -66 56 35 0.45 51 0 0 -67 43 49 19 35 12.9 10 88 -35 -68 22 9 -67 5 40 -68 30 18 -66 57 36 0.45 52 0 0 -67 44 29 19 35 13.4 10 87 -35 -68 22 49 -67 6 21 -68 30 58 -66 58 18 0.45 53 0 0 -67 44 52 19 35 14.0 10 86 -35 -68 23 11 -67 6 45 -68 31 20 -66 58 41 0.45 54 0 0 -67 44 57 19 35 14.6 11 85 -35 -68 23 15 -67 6 50 -68 31 24 -66 58 46 0.45 55 0 0 -67 44 43 19 35 15.2 11 84 -35 -68 23 2 -67 6 36 -68 31 11 -66 58 32 0.45 56 0 0 -67 44 12 19 35 15.8 12 83 -36 -68 22 31 -67 6 4 -68 30 40 -66 58 0 0.45 57 0 0 -67 43 22 19 35 16.5 12 82 -36 -68 21 43 -67 5 14 -68 29 52 -66 57 10 0.45 58 0 0 -67 42 15 19 35 17.2 12 81 -36 -68 20 36 -67 4 5 -68 28 46 -66 56 1 0.45 59 0 0 -67 40 49 19 35 17.8 13 80 -36 -68 19 12 -67 2 37 -68 27 22 -66 54 33 0.45 60 0 0 -67 39 5 19 35 18.6 13 79 -36 -68 17 31 -67 0 51 -68 25 41 -66 52 46 0.45 61 0 0 -67 37 3 19 35 19.3 13 78 -36 -68 15 31 -66 58 46 -68 23 42 -66 50 41 0.45 62 0 0 -67 34 42 19 35 20.1 14 77 -36 -68 13 13 -66 56 23 -68 21 25 -66 48 17 0.45 63 0 0 -67 32 3 19 35 20.8 14 76 -36 -68 10 37 -66 53 40 -68 18 50 -66 45 33 0.44 64 0 0 -67 29 5 19 35 21.7 15 76 -36 -68 7 43 -66 50 38 -68 15 56 -66 42 31 0.44 65 0 0 -67 25 48 19 35 22.5 15 75 -36 -68 4 30 -66 47 17 -68 12 44 -66 39 9 0.44 66 0 0 -67 22 12 19 35 23.3 15 74 -36 -68 0 59 -66 43 37 -68 9 14 -66 35 27 0.44 67 0 0 -67 18 17 19 35 24.2 16 73 -36 -67 57 9 -66 39 36 -68 5 25 -66 31 26 0.44 68 0 0 -67 14 2 19 35 25.1 16 72 -36 -67 53 0 -66 35 16 -68 1 17 -66 27 5 0.44 69 0 0 -67 9 28 19 35 26.1 17 71 -36 -67 48 31 -66 30 36 -67 56 50 -66 22 23 0.44 70 0 0 -67 4 33 19 35 27.0 17 70 -36 -67 43 43 -66 25 35 -67 52 3 -66 17 21 0.44 71 0 0 -66 59 19 19 35 28.0 17 69 -37 -67 38 35 -66 20 14 -67 46 57 -66 11 59 0.44 72 0 0 -66 53 44 19 35 29.0 18 68 -37 -67 33 8 -66 14 32 -67 41 31 -66 6 15 0.44 73 0 0 -66 47 48 19 35 30.1 18 67 -37 -67 27 19 -66 8 29 -67 35 44 -66 0 10 0.44 74 0 0 -66 41 31 19 35 31.2 19 66 -37 -67 21 11 -66 2 4 -67 29 37 -65 53 44 0.44 75 0 0 -66 34 53 19 35 32.3 19 65 -37 -67 14 41 -65 55 17 -67 23 9 -65 46 55 0.44 76 0 0 -66 27 52 19 35 33.4 19 64 -37 -67 7 49 -65 48 8 -67 16 19 -65 39 45 0.44 77 0 0 -66 20 30 19 35 34.6 20 63 -37 -67 0 36 -65 40 37 -67 9 8 -65 32 11 0.44 78 0 0 -66 12 45 19 35 35.8 20 62 -37 -66 53 1 -65 32 42 -67 1 35 -65 24 14 0.44 79 0 0 -66 4 37 19 35 37.1 21 61 -37 -66 45 4 -65 24 24 -66 53 40 -65 15 54 0.44 80 0 0 -65 56 6 19 35 38.4 21 60 -37 -66 36 43 -65 15 42 -66 45 21 -65 7 10 0.44 81 0 0 -65 47 10 19 35 39.7 21 60 -37 -66 27 59 -65 6 36 -66 36 40 -64 58 1 0.44 82 0 0 -65 37 50 19 35 41.1 22 59 -37 -66 18 50 -64 57 4 -66 27 34 -64 48 28 0.44 83 0 0 -65 28 6 19 35 42.5 22 58 -37 -66 9 18 -64 47 8 -66 18 4 -64 38 28 0.44 84 0 0 -65 17 55 19 35 44.0 23 57 -37 -65 59 20 -64 36 45 -66 8 9 -64 28 3 0.44 85 0 0 -65 7 19 19 35 45.5 23 56 -37 -65 48 57 -64 25 56 -65 57 48 -64 17 11 0.44 86 0 0 -64 56 16 19 35 47.0 24 55 -37 -65 38 7 -64 14 40 -65 47 1 -64 5 52 0.44 87 0 0 -64 44 46 19 35 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33 14 -15 40 36 -17 45 19 -15 28 48 0.46 161 0 0 -15 35 16 19 43 23.8 62 282 3 -16 31 30 -14 39 37 -16 43 30 -14 27 53 0.46 162 0 0 -14 34 25 19 43 34.3 61 280 5 -15 30 16 -13 39 8 -15 42 11 -13 27 29 0.46 163 0 0 -13 34 7 19 43 44.6 60 277 6 -14 29 35 -12 39 14 -14 41 25 -12 27 40 0.46 164 0 0 -12 34 27 19 43 54.8 59 275 7 -13 29 30 -11 39 57 -13 41 15 -11 28 28 0.46 165 0 0 -11 35 27 19 44 4.9 58 273 8 -12 30 5 -10 41 21 -12 41 45 -10 29 57 0.47 166 0 0 -10 37 9 19 44 14.8 57 272 10 -11 31 23 - 9 43 28 -11 42 57 - 9 32 9 0.47 167 0 0 - 9 39 37 19 44 24.6 56 270 11 -10 33 25 - 8 46 20 -10 44 54 - 8 35 6 0.47 168 0 0 - 8 42 52 19 44 34.2 55 268 12 - 9 36 15 - 7 50 1 - 9 47 38 - 7 38 52 0.47 169 0 0 - 7 46 58 19 44 43.6 54 267 13 - 8 39 55 - 6 54 31 - 8 51 12 - 6 43 28 0.47 170 0 0 - 6 51 55 19 44 52.9 53 266 15 - 7 44 26 - 5 59 54 - 7 55 38 - 5 48 56 0.47 171 0 0 - 5 57 47 19 45 1.9 52 265 16 - 6 49 52 - 5 6 10 - 7 0 58 - 4 55 17 0.47 172 0 0 - 5 4 33 19 45 10.8 51 263 17 - 5 56 12 - 4 13 22 - 6 7 13 - 4 2 34 0.47 173 0 0 - 4 12 17 19 45 19.4 50 262 18 - 5 3 30 - 3 21 31 - 5 14 25 - 3 10 48 0.47 174 0 0 - 3 20 58 19 45 27.9 48 262 19 - 4 11 46 - 2 30 37 - 4 22 36 - 2 20 0 0.47 175 0 0 - 2 30 39 19 45 36.1 47 261 21 - 3 21 1 - 1 40 42 - 3 31 45 - 1 30 10 0.47 176 0 0 - 1 41 19 19 45 44.1 46 260 22 - 2 31 16 - 0 51 48 - 2 41 55 - 0 41 21 0.47 177 0 0 - 0 53 1 19 45 51.9 45 259 23 - 1 42 33 - 0 3 53 - 1 53 7 0 6 28 0.47 178 0 0 - 0 5 44 19 45 59.5 44 259 24 - 0 54 51 0 43 0 - 1 5 20 0 53 16 0.47 179 0 0 0 40 32 19 46 6.8 43 258 25 - 0 8 12 1 28 51 - 0 18 35 1 39 3 0.48 180 0 0 1 25 44 19 46 14.0 42 258 27 0 37 25 2 13 40 0 27 7 2 23 47 0.48 -179 0 0 2 9 55 19 46 20.9 40 258 28 1 21 59 2 57 28 1 11 46 3 7 30 0.48 -178 0 0 2 53 2 19 46 27.6 39 257 29 2 5 29 3 40 12 1 55 21 3 50 10 0.48 -177 0 0 3 35 7 19 46 34.0 38 257 30 2 47 56 4 21 55 2 37 53 4 31 48 0.48 -176 0 0 4 16 9 19 46 40.3 37 257 31 3 29 21 5 2 35 3 19 22 5 12 23 0.48 -175 0 0 4 56 8 19 46 46.3 36 256 32 4 9 42 5 42 13 3 59 48 5 51 56 0.48 -174 0 0 5 35 4 19 46 52.1 35 256 34 4 49 0 6 20 49 4 39 11 6 30 28 0.48 -173 0 0 6 12 59 19 46 57.7 33 256 35 5 27 15 6 58 23 5 17 30 7 7 58 0.48 -172 0 0 6 49 51 19 47 3.1 32 256 36 6 4 28 7 34 55 5 54 48 7 44 26 0.48 -171 0 0 7 25 42 19 47 8.2 31 256 37 6 40 38 8 10 27 6 31 3 8 19 54 0.48 -170 0 0 8 0 32 19 47 13.2 30 256 38 7 15 48 8 44 58 7 6 16 8 54 21 0.48 -169 0 0 8 34 21 19 47 18.0 29 256 39 7 49 55 9 18 28 7 40 28 9 27 47 0.48 -168 0 0 9 7 10 19 47 22.5 28 256 40 8 23 2 9 50 59 8 13 39 10 0 14 0.48 -167 0 0 9 38 59 19 47 26.9 27 256 41 8 55 9 10 22 31 8 45 49 10 31 42 0.48 -166 0 0 10 9 48 19 47 31.0 26 256 42 9 26 16 10 53 3 9 17 0 11 2 12 0.48 -165 0 0 10 39 39 19 47 35.0 25 256 43 9 56 24 11 22 38 9 47 11 11 31 43 0.48 -164 0 0 11 8 32 19 47 38.7 24 256 45 10 25 33 11 51 15 10 16 24 12 0 16 0.48 -163 0 0 11 36 27 19 47 42.3 22 256 46 10 53 44 12 18 55 10 44 38 12 27 53 0.48 -162 0 0 12 3 25 19 47 45.7 21 256 47 11 20 57 12 45 38 11 11 54 12 54 33 0.48 -161 0 0 12 29 27 19 47 48.9 20 256 48 11 47 13 13 11 25 11 38 14 13 20 17 0.48 -160 0 0 12 54 33 19 47 51.9 19 257 49 12 12 33 13 36 17 12 3 37 13 45 6 0.48 -159 0 0 13 18 43 19 47 54.8 18 257 50 12 36 57 14 0 14 12 28 4 14 9 0 0.48 -158 0 0 13 41 59 19 47 57.4 17 257 51 13 0 26 14 23 17 12 51 36 14 32 0 0.48 -157 0 0 14 4 21 19 47 59.9 16 257 52 13 23 1 14 45 26 13 14 13 14 54 7 0.49 -156 0 0 14 25 49 19 48 2.3 15 257 53 13 44 41 15 6 42 13 35 56 15 15 21 0.49 -155 0 0 14 46 24 19 48 4.4 14 258 54 14 5 28 15 27 6 13 56 45 15 35 42 0.49 -154 0 0 15 6 6 19 48 6.4 13 258 55 14 25 21 15 46 37 14 16 41 15 55 11 0.49 -153 0 0 15 24 57 19 48 8.3 12 258 56 14 44 23 16 5 17 14 35 45 16 13 49 0.49 -152 0 0 15 42 56 19 48 10.0 11 258 57 15 2 32 16 23 6 14 53 56 16 31 36 0.49 -151 0 0 16 0 5 19 48 11.5 10 259 58 15 19 50 16 40 5 15 11 17 16 48 32 0.49 -150 0 0 16 16 22 19 48 12.9 9 259 59 15 36 17 16 56 14 15 27 46 17 4 39 0.50 -149 0 0 16 31 50 19 48 14.1 8 259 60 15 51 54 17 11 33 15 43 24 17 19 57 0.50 -148 0 0 16 46 29 19 48 15.2 7 259 61 16 6 41 17 26 3 15 58 13 17 34 25 0.50 -147 0 0 17 0 18 19 48 16.1 6 260 61 16 20 38 17 39 45 16 12 12 17 48 5 0.51 -146 0 0 17 13 19 19 48 16.9 5 260 62 16 33 47 17 52 38 16 25 22 18 0 57 0.52 -145 0 0 17 25 31 19 48 17.6 4 260 63 16 46 6 18 4 44 16 37 43 18 13 1 0.53 -144 0 0 17 36 56 19 48 18.1 3 261 64 16 57 38 18 16 2 16 49 16 18 24 18 0.55 -143 0 0 17 47 33 19 48 18.4 2 261 65 17 8 21 18 26 33 17 0 1 18 34 48 0.59 -142 0 0 17 57 24 19 48 18.7 1 261 66 17 18 17 18 36 18 17 9 58 18 44 31 0.70 -141 0 0 18 6 27 19 48 18.7 0 261 67 17 27 26 18 45 16 17 19 8 18 53 28 1.90 Uncertainty in time = +/- 2 secs Prediction of 2023 Mar 1.1 Data for the target star ------------------------ * name: 2UCAC 28968942 * constellation : Scutum * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 52 33.6410 DE: -08 03 48.101 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 52 33.6411 DE: -08 03 48.101 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (393) Lampetia asteroid class: approx. diameter [km]: 129 approx. diameter ["]: 0.126 distance from Earth [AU]: 1.41780 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): 0.025", 0.003", 78.341° remarks: * orbital elements for (393)Lampetia : Mean anomaly = 336.5190866163 deg Arg. of pericenter = 90.8673613208 deg Long. of node = 212.3931354854 deg Inclination = 14.8773237433 deg Eccentricity = 0.3299814064 Semimajor axis = 2.7797085221 AU Perihelion dist = 1.8624563946 AU Mag: H = 8.43, G = 0.15 Epoch of elements : MJD 60060.82055556 TDT (2023 Apr 26.8206) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1262023Feb07,8.83,2023,4,26,19.694961,0.279141,-0.303651,6.082171,5.587506,-0.004739,-0.000978,0.000001,0.000000 133.4849,-8.0370,-115.97,13.63,False 2UCAC 28968942,18.87601138,-8.0633616,0.00,12.40,0.00,0.0,0,,18.89708512,-8.0369779,0.56,0.00,0,0,0 393,Lampetia,11.96,129.2,1.4178,0,0,2.540,34.66,,8.4,0 0,336.3446,2023,4,26,90.8674,212.3931,14.8773,0.32998,2.77971,1.86246,8.45,5.0,0.15 1.106,0.0253,0.0033,78,0.0133,Known errors,-1.00,-1,-1,-1 20230426_968942,60004.06 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Mar 01, 01:20 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org