IOTA/IOTA-ES occultation update for (162) Laurentia / UCAC4 393-059114 event on 2023 Mar 05, 12:55 UT Visible from Mexico Summary ------- On 2023 Mar 05 UT, the 97 km diameter asteroid (162) Laurentia will occult a 13.4 mag star in the constellation Virgo for observers along a path across Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.73 mag to 13.34 mag (the magnitude of the asteroid) for at most 76.170 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: 94 * date and approx. time of event: 2023 Mar 05, 11:30 - 2023 Mar 05, 14:20 * geocentric midpoint of event [JD]: 2460009.03838779 * magnitude of target star: 13.38 * magnitude drop [mag]: 0.73 * estimated maximum duration [s]: 76.170 * Moon: 96 % sunlit, 74° distance * Sun: 128° distance * rough path description: Mexico The occultation path -------------------- * approximate projected width [km]: 97 * 1 sigma uncertainty interval [path widths]: +/- 0.46 * 1 sigma uncertainty interval [seconds]: +/- 4.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.029, +/- 0.015) * 1 sigma uncertainty ellipse (major, minor, PA): (0.033", 0.004", 116°) * approx speed of asteroid's shadow [km/s]: 1.2737 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 393-059114 by 162 Laurentia on 2023 Mar 5 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 154 0 0 .. .. .... .. .. .. .. .. .. -61 21 40 .. .. .. -60 53 48 .. .. .. .... 155 0 0 -61 35 23 14 6 55.8 30 54 -22 -61 4 38 .. .. .. -60 36 35 .. .. .. .... 156 0 0 -61 17 58 14 6 32.7 31 53 -23 -60 47 0 -61 48 59 -60 18 45 -62 17 24 0.14 157 0 0 -60 59 56 14 6 8.9 31 53 -23 -60 28 45 -61 31 12 -60 0 19 -61 59 49 0.14 158 0 0 -60 41 17 14 5 44.4 32 52 -23 -60 9 53 -61 12 46 -59 41 14 -61 41 36 0.15 159 0 0 -60 22 0 14 5 19.1 32 51 -23 -59 50 22 -60 53 43 -59 21 30 -61 22 46 0.15 160 0 0 -60 2 4 14 4 53.0 33 50 -24 -59 30 11 -60 34 1 -59 1 7 -61 3 17 0.15 161 0 0 -59 41 27 14 4 26.0 33 49 -24 -59 9 20 -60 13 38 -58 40 4 -60 43 8 0.15 162 0 0 -59 20 9 14 3 58.3 34 49 -24 -58 47 49 -59 52 35 -58 18 19 -60 22 18 0.15 163 0 0 -58 58 10 14 3 29.6 35 48 -25 -58 25 35 -59 30 51 -57 55 52 -60 0 47 0.15 164 0 0 -58 35 28 14 3 0.0 35 47 -25 -58 2 38 -59 8 23 -57 32 42 -59 38 34 0.15 165 0 0 -58 12 2 14 2 29.5 36 46 -25 -57 38 57 -58 45 13 -57 8 48 -59 15 37 0.16 166 0 0 -57 47 52 14 1 58.0 36 46 -25 -57 14 32 -58 21 17 -56 44 10 -58 51 56 0.16 167 0 0 -57 22 56 14 1 25.5 37 45 -26 -56 49 21 -57 56 37 -56 18 46 -58 27 29 0.16 168 0 0 -56 57 14 14 0 51.9 38 44 -26 -56 23 24 -57 31 10 -55 52 35 -58 2 16 0.16 169 0 0 -56 30 44 14 0 17.2 38 43 -26 -55 56 40 -57 4 56 -55 25 37 -57 36 16 0.16 170 0 0 -56 3 27 13 59 41.4 39 43 -26 -55 29 8 -56 37 54 -54 57 52 -57 9 29 0.16 171 0 0 -55 35 21 13 59 4.5 40 42 -27 -55 0 46 -56 10 3 -54 29 17 -56 41 52 0.16 172 0 0 -55 6 25 13 58 26.4 40 41 -27 -54 31 36 -55 41 22 -53 59 53 -56 13 25 0.17 173 0 0 -54 36 38 13 57 47.0 41 41 -27 -54 1 34 -55 11 50 -53 29 38 -55 44 8 0.17 174 0 0 -54 6 1 13 57 6.4 42 40 -28 -53 30 42 -54 41 28 -52 58 33 -55 13 59 0.17 175 0 0 -53 34 31 13 56 24.5 42 39 -28 -52 58 58 -54 10 13 -52 26 36 -54 42 58 0.17 176 0 0 -53 2 9 13 55 41.3 43 38 -28 -52 26 21 -53 38 5 -51 53 46 -54 11 4 0.17 177 0 0 -52 28 53 13 54 56.7 44 38 -28 -51 52 52 -53 5 4 -51 20 4 -53 38 16 0.17 178 0 0 -51 54 44 13 54 10.6 45 37 -29 -51 18 28 -52 31 9 -50 45 28 -53 4 34 0.17 179 0 0 -51 19 40 13 53 23.2 45 36 -29 -50 43 11 -51 56 19 -50 9 59 -52 29 58 0.17 -180 0 0 -50 43 42 13 52 34.3 46 36 -29 -50 6 59 -51 20 34 -49 33 35 -51 54 25 0.17 -179 0 0 -50 6 48 13 51 43.9 47 35 -30 -49 29 53 -50 43 54 -48 56 17 -51 17 57 0.17 -178 0 0 -49 28 59 13 50 51.9 48 34 -30 -48 51 51 -50 6 18 -48 18 4 -50 40 33 0.17 -177 0 0 -48 50 14 13 49 58.5 49 34 -30 -48 12 54 -49 27 45 -47 38 56 -50 2 12 0.17 -176 0 0 -48 10 34 13 49 3.4 49 33 -30 -47 33 2 -48 48 16 -46 58 53 -49 22 55 0.17 -175 0 0 -47 29 57 13 48 6.7 50 32 -31 -46 52 14 -48 7 51 -46 17 55 -48 42 40 0.17 -174 0 0 -46 48 24 13 47 8.4 51 32 -31 -46 10 31 -47 26 30 -45 36 2 -48 1 29 0.17 -173 0 0 -46 5 56 13 46 8.4 52 31 -31 -45 27 52 -46 44 12 -44 53 14 -47 19 21 0.17 -172 0 0 -45 22 32 13 45 6.8 53 30 -32 -44 44 18 -46 0 58 -44 9 32 -46 36 16 0.17 -171 0 0 -44 38 12 13 44 3.5 54 30 -32 -43 59 49 -45 16 48 -43 24 55 -45 52 15 0.17 -170 0 0 -43 52 58 13 42 58.6 55 29 -32 -43 14 26 -44 31 42 -42 39 24 -45 7 18 0.17 -169 0 0 -43 6 49 13 41 51.9 56 29 -32 -42 28 9 -43 45 41 -41 52 59 -44 21 25 0.17 -168 0 0 -42 19 46 13 40 43.5 57 28 -33 -41 40 58 -42 58 46 -41 5 41 -43 34 36 0.17 -167 0 0 -41 31 49 13 39 33.4 58 27 -33 -40 52 54 -42 10 56 -40 17 31 -42 46 53 0.17 -166 0 0 -40 42 59 13 38 21.6 58 27 -33 -40 3 58 -41 22 13 -39 28 29 -41 58 17 0.17 -165 0 0 -39 53 18 13 37 8.1 59 26 -33 -39 14 11 -40 32 38 -38 38 37 -41 8 47 0.17 -164 0 0 -39 2 46 13 35 53.0 60 25 -33 -38 23 33 -39 42 11 -37 47 54 -40 18 24 0.16 -163 0 0 -38 11 23 13 34 36.1 61 25 -34 -37 32 5 -38 50 53 -36 56 22 -39 27 11 0.16 -162 0 0 -37 19 11 13 33 17.6 62 24 -34 -36 39 49 -37 58 45 -36 4 2 -38 35 7 0.16 -161 0 0 -36 26 11 13 31 57.4 63 24 -34 -35 46 45 -37 5 49 -35 10 54 -37 42 14 0.16 -160 0 0 -35 32 23 13 30 35.7 64 23 -34 -34 52 55 -36 12 5 -34 17 0 -36 48 32 0.15 -159 0 0 -34 37 50 13 29 12.3 66 22 -34 -33 58 18 -35 17 34 -33 22 21 -35 54 4 0.15 -158 0 0 -33 42 32 13 27 47.3 67 21 -34 -33 2 58 -34 22 18 -32 26 59 -34 58 50 0.15 -157 0 0 -32 46 30 13 26 20.9 68 21 -35 -32 6 54 -33 26 18 -31 30 53 -34 2 52 0.15 -156 0 0 -31 49 46 13 24 52.9 69 20 -35 -31 10 9 -32 29 36 -30 34 6 -33 6 10 0.14 -155 0 0 -30 52 22 13 23 23.5 70 19 -35 -30 12 43 -31 32 12 -29 36 39 -32 8 47 0.14 -154 0 0 -29 54 17 13 21 52.6 71 18 -35 -29 14 38 -30 34 8 -28 38 32 -31 10 43 0.14 -153 0 0 -28 55 34 13 20 20.4 72 17 -35 -28 15 54 -29 35 25 -27 39 48 -30 12 1 0.13 -152 0 0 -27 56 14 13 18 46.8 73 16 -35 -27 16 34 -28 36 5 -26 40 27 -29 12 40 0.13 -151 0 0 -26 56 18 13 17 12.0 74 15 -35 -26 16 38 -27 36 9 -25 40 31 -28 12 44 0.13 -150 0 0 -25 55 48 13 15 35.9 75 14 -35 -25 16 8 -26 35 38 -24 40 1 -27 12 12 0.12 -149 0 0 -24 54 45 13 13 58.7 76 12 -35 -24 15 5 -25 34 35 -23 38 58 -26 11 8 0.12 -148 0 0 -23 53 10 13 12 20.3 77 11 -35 -23 13 31 -24 32 59 -22 37 24 -25 9 31 0.11 -147 0 0 -22 51 5 13 10 40.9 79 9 -35 -22 11 26 -23 30 52 -21 35 20 -24 7 23 0.11 -146 0 0 -21 48 30 13 9 0.4 80 7 -35 -21 8 53 -22 28 17 -20 32 47 -23 4 46 0.10 -145 0 0 -20 45 28 13 7 19.1 81 4 -35 -20 5 51 -21 25 14 -19 29 46 -22 1 41 0.10 -144 0 0 -19 42 0 13 5 36.8 82 0 -35 -19 2 23 -20 21 44 -18 26 18 -20 58 10 0.09 -143 0 0 -18 38 6 13 3 53.7 83 356 -35 -17 58 30 -19 17 49 -17 22 26 -19 54 13 0.09 -142 0 0 -17 33 48 13 2 9.9 84 349 -35 -16 54 13 -18 13 30 -16 18 9 -18 49 53 0.08 -141 0 0 -16 29 8 13 0 25.4 85 341 -35 -15 49 34 -17 8 48 -15 13 29 -17 45 10 0.08 -140 0 0 -15 24 6 12 58 40.2 86 329 -34 -14 44 33 -16 3 45 -14 8 28 -16 40 5 0.07 -139 0 0 -14 18 43 12 56 54.5 86 314 -34 -13 39 11 -14 58 22 -13 3 7 -15 34 40 0.07 -138 0 0 -13 13 2 12 55 8.4 86 295 -34 -12 33 30 -13 52 39 -11 57 26 -14 28 57 0.06 -137 0 0 -12 7 3 12 53 21.8 86 276 -34 -11 27 32 -12 46 40 -10 51 28 -13 22 56 0.06 -136 0 0 -11 0 47 12 51 34.9 85 261 -34 -10 21 16 -11 40 23 - 9 45 12 -12 16 38 0.05 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14 -0.07 - 72 0 0 50 1 35 11 34 50.3 15 230 1 50 35 15 49 27 58 51 6 2 48 57 17 -0.07 - 71 0 0 50 32 5 11 34 33.1 14 231 1 51 5 27 49 58 46 51 35 59 49 28 21 -0.06 - 70 0 0 51 1 37 11 34 17.1 13 232 2 51 34 41 50 28 35 52 4 57 49 58 25 -0.06 - 69 0 0 51 30 10 11 34 2.2 13 232 2 52 2 58 50 57 25 52 32 57 50 27 31 -0.06 - 68 0 0 51 57 47 11 33 48.3 12 233 3 52 30 17 51 25 19 53 0 1 50 55 40 -0.05 - 67 0 0 52 24 28 11 33 35.5 11 234 3 52 56 41 51 52 17 53 26 10 51 22 53 -0.05 - 66 0 0 52 50 15 11 33 23.7 10 235 4 53 22 11 52 18 20 53 51 24 51 49 11 -0.05 - 65 0 0 53 15 8 11 33 12.8 10 235 4 53 46 48 52 43 29 54 15 46 52 14 35 -0.04 - 64 0 0 53 39 8 11 33 2.9 9 236 5 54 10 32 53 7 45 54 39 15 52 39 5 -0.04 - 63 0 0 54 2 18 11 32 53.8 8 237 5 54 33 26 53 31 10 55 1 55 53 2 44 -0.03 - 62 0 0 54 24 37 11 32 45.5 8 238 6 54 55 30 53 53 45 55 23 44 53 25 33 -0.03 - 61 0 0 54 46 7 11 32 38.1 7 238 6 55 16 45 54 15 30 55 44 45 53 47 31 -0.03 - 60 0 0 55 6 49 11 32 31.4 6 239 6 55 37 12 54 36 26 56 4 59 54 8 41 -0.02 - 59 0 0 55 26 44 11 32 25.5 6 240 7 55 56 53 54 56 36 56 24 26 54 29 3 -0.02 - 58 0 0 55 45 53 11 32 20.2 5 241 7 56 15 48 55 15 58 56 43 9 54 48 39 -0.01 - 57 0 0 56 4 17 11 32 15.7 4 242 8 56 33 58 55 34 36 57 1 7 55 7 29 -0.01 - 56 0 0 56 21 57 11 32 11.8 4 243 8 56 51 25 55 52 29 57 18 22 55 25 34 0.00 - 55 0 0 56 38 54 11 32 8.5 3 243 8 57 8 10 56 9 39 57 34 54 55 42 55 0.01 - 54 0 0 56 55 9 11 32 5.8 3 244 9 57 24 12 56 26 7 57 50 46 55 59 34 0.02 - 53 0 0 57 10 43 11 32 3.8 2 245 9 57 39 34 56 41 52 58 5 57 56 15 30 0.03 - 52 0 0 57 25 37 11 32 2.3 1 246 9 57 54 16 56 56 57 58 20 28 56 30 46 0.05 - 51 0 0 57 39 51 11 32 1.3 1 247 10 58 8 19 57 11 22 58 34 21 56 45 21 0.09 - 50 0 0 57 53 26 11 32 0.8 0 247 10 58 21 44 57 25 8 .. .. .. 56 59 17 0.31 - 49 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 57 12 33 .... Uncertainty in time = +/- 35 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 393-059114 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 20 32.2345 DE: -11 28 46.801 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 20 32.2346 DE: -11 28 46.801 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 13.4 * B mag [mag]: 13.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (162) Laurentia asteroid class: approx. diameter [km]: 97 approx. diameter ["]: 0.071 distance from Earth [AU]: 1.87140 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#65 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): 0.033", 0.004", 116.133° remarks: * orbital elements for (162)Laurentia : Mean anomaly = 33.7184594598 deg Arg. of pericenter = 115.7153562391 deg Long. of node = 35.4462350224 deg Inclination = 6.0915631932 deg Eccentricity = 0.1821651048 Semimajor axis = 3.0166199454 AU Perihelion dist = 2.4670970568 AU Mag: H = 8.97, G = 0.15 Epoch of elements : MJD 60008.53838750 TDT (2023 Mar 05.5384) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#652023Feb07,76.17,2023,3,5,12.921307,0.056196,-0.028777,-0.327505,-0.639971,-0.004351,0.001334,0.000001,0.000000 -141.3882,-11.5867,-10.94,-6.03,False UCAC4 393-059114,14.34228735,-11.4796668,13.73,13.38,13.19,0.0,0,,14.36312592,-11.5867099,0.73,0.61,0,0,0 162,Laurentia,13.34,97.0,1.8714,0,0,-0.105,-3.01,,6.6,0 0,33.6172,2023,3,5,115.7154,35.4462,6.0916,0.18217,3.01662,2.46710,8.98,5.0,0.15 1.457,0.0327,0.0037,116,0.0327,Known errors,1.06,-1,-1,-1 20230305_059114,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:44 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org