IOTA/IOTA-ES occultation update for (469) Argentina / TYC 1409-00100-1 event on 2024 Oct 19, 02:37 UT Visible from Summary ------- On 2024 Oct 19 UT, the 130.613 km diameter asteroid (469) Argentina will occult a 10.2 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.31 mag to 14.50 mag (the magnitude of the asteroid) for at most 4.570 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 19, 02:33 - 2024 Oct 19, 02:41 * geocentric midpoint of event [JD]: 2460602.60947708 * magnitude of target star: 10.21 * magnitude drop [mag]: 4.31 * estimated maximum duration [s]: 4.570 * Moon: 96 % sunlit, 90° distance * Sun: 67° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 132 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.017) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.013", 121°) * approx speed of asteroid's shadow [km/s]: 28.5860 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1409-00100-1 by 469 Argentina on 2024 Oct 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 - 24 0 0 27 50 37 2 33 59.1 1 67 -65 27 11 37 28 29 41 26 53 3 28 48 21 .... - 23 0 0 28 13 16 2 33 59.2 1 67 -64 27 34 22 28 52 15 27 15 51 29 10 52 -0.20 - 22 0 0 28 35 31 2 33 59.3 2 68 -64 27 56 42 29 14 24 27 38 13 29 32 58 -0.19 - 21 0 0 28 57 20 2 33 59.5 3 68 -63 28 18 37 29 36 7 28 0 10 29 54 39 -0.18 - 20 0 0 29 18 43 2 33 59.7 4 69 -62 28 40 6 29 57 25 28 21 42 30 15 54 -0.18 - 19 0 0 29 39 41 2 34 0.1 5 69 -61 29 1 10 30 18 18 28 42 48 30 36 44 -0.18 - 18 0 0 30 0 14 2 34 0.4 6 70 -60 29 21 47 30 38 45 29 3 29 30 57 9 -0.17 - 17 0 0 30 20 20 2 34 0.9 7 70 -59 29 42 0 30 58 46 29 23 43 31 17 7 -0.17 - 16 0 0 30 40 1 2 34 1.3 8 71 -58 30 1 46 31 18 21 29 43 32 31 36 39 -0.17 - 15 0 0 30 59 16 2 34 1.9 9 71 -57 30 21 6 31 37 30 30 2 55 31 55 46 -0.17 - 14 0 0 31 18 4 2 34 2.5 10 72 -56 30 40 0 31 56 13 30 21 52 32 14 26 -0.17 - 13 0 0 31 36 27 2 34 3.1 11 72 -55 30 58 28 32 14 30 30 40 22 32 32 41 -0.17 - 12 0 0 31 54 23 2 34 3.8 12 73 -55 31 16 30 32 32 21 30 58 26 32 50 29 -0.17 - 11 0 0 32 11 53 2 34 4.6 13 73 -54 31 34 5 32 49 46 31 16 4 33 7 52 -0.17 - 10 0 0 32 28 58 2 34 5.4 13 74 -53 31 51 14 33 6 45 31 33 16 33 24 48 -0.17 - 9 0 0 32 45 35 2 34 6.2 14 75 -52 32 7 57 33 23 17 31 50 2 33 41 18 -0.17 - 8 0 0 33 1 47 2 34 7.1 15 75 -51 32 24 14 33 39 24 32 6 21 33 57 22 -0.17 - 7 0 0 33 17 33 2 34 8.1 16 76 -50 32 40 5 33 55 4 32 22 14 34 13 0 -0.17 - 6 0 0 33 32 52 2 34 9.1 17 76 -49 32 55 29 34 10 19 32 37 40 34 28 12 -0.17 - 5 0 0 33 47 45 2 34 10.1 18 77 -48 33 10 27 34 25 7 32 52 41 34 42 58 -0.17 - 4 0 0 34 2 12 2 34 11.2 19 77 -48 33 24 59 34 39 29 33 7 15 34 57 18 -0.17 - 3 0 0 34 16 13 2 34 12.3 20 78 -47 33 39 5 34 53 26 33 21 23 35 11 12 -0.17 - 2 0 0 34 29 48 2 34 13.5 20 79 -46 33 52 44 35 6 56 33 35 5 35 24 40 -0.17 - 1 0 0 34 42 57 2 34 14.7 21 79 -45 34 5 58 35 20 0 33 48 21 35 37 42 -0.17 0 0 0 34 55 40 2 34 15.9 22 80 -44 34 18 46 35 32 39 34 1 10 35 50 19 -0.17 1 0 0 35 7 58 2 34 17.2 23 80 -43 34 31 7 35 44 52 34 13 34 36 2 30 -0.17 2 0 0 35 19 49 2 34 18.6 24 81 -43 34 43 3 35 56 39 34 25 32 36 14 15 -0.17 3 0 0 35 31 15 2 34 19.9 25 81 -42 34 54 33 36 8 1 34 37 3 36 25 35 -0.17 4 0 0 35 42 15 2 34 21.3 26 82 -41 35 5 37 36 18 57 34 48 9 36 36 29 -0.17 5 0 0 35 52 49 2 34 22.8 26 83 -40 35 16 15 36 29 28 34 58 49 36 46 58 -0.16 6 0 0 36 2 58 2 34 24.3 27 83 -39 35 26 28 36 39 33 35 9 4 36 57 1 -0.16 7 0 0 36 12 42 2 34 25.8 28 84 -38 35 36 15 36 49 13 35 18 52 37 6 39 -0.16 8 0 0 36 22 0 2 34 27.4 29 85 -38 35 45 36 36 58 27 35 28 16 37 15 52 -0.16 9 0 0 36 30 52 2 34 28.9 30 85 -37 35 54 32 37 7 17 35 37 13 37 24 40 -0.16 10 0 0 36 39 20 2 34 30.6 31 86 -36 36 3 2 37 15 41 35 45 45 37 33 2 -0.16 11 0 0 36 47 22 2 34 32.2 31 87 -35 36 11 8 37 23 40 35 53 52 37 41 0 -0.16 12 0 0 36 54 59 2 34 33.9 32 87 -34 36 18 47 37 31 14 36 1 33 37 48 33 -0.16 13 0 0 37 2 11 2 34 35.7 33 88 -33 36 26 2 37 38 23 36 8 49 37 55 40 -0.16 14 0 0 37 8 57 2 34 37.4 34 89 -33 36 32 51 37 45 7 36 15 39 38 2 23 -0.16 15 0 0 37 15 19 2 34 39.2 35 89 -32 36 39 16 37 51 26 36 22 5 38 8 41 -0.16 16 0 0 37 21 16 2 34 41.1 35 90 -31 36 45 15 37 57 21 36 28 5 38 14 35 -0.16 17 0 0 37 26 48 2 34 42.9 36 91 -30 36 50 49 38 2 50 36 33 40 38 20 3 -0.16 18 0 0 37 31 55 2 34 44.8 37 91 -29 36 55 58 38 7 56 36 38 50 38 25 8 -0.16 19 0 0 37 36 37 2 34 46.7 38 92 -29 37 0 42 38 12 36 36 43 35 38 29 47 -0.16 20 0 0 37 40 55 2 34 48.7 39 93 -28 37 5 1 38 16 52 36 47 55 38 34 2 -0.16 21 0 0 37 44 48 2 34 50.7 39 93 -27 37 8 56 38 20 43 36 51 50 38 37 53 -0.16 22 0 0 37 48 16 2 34 52.7 40 94 -26 37 12 25 38 24 10 36 55 20 38 41 19 -0.16 23 0 0 37 51 19 2 34 54.8 41 95 -25 37 15 30 38 27 12 36 58 26 38 44 20 -0.16 24 0 0 37 53 58 2 34 56.9 42 95 -25 37 18 10 38 29 50 37 1 6 38 46 57 -0.16 25 0 0 37 56 12 2 34 59.0 42 96 -24 37 20 25 38 32 3 37 3 21 38 49 10 -0.16 26 0 0 37 58 1 2 35 1.1 43 97 -23 37 22 15 38 33 52 37 5 12 38 50 59 -0.16 27 0 0 37 59 26 2 35 3.3 44 98 -22 37 23 40 38 35 16 37 6 38 38 52 23 -0.16 28 0 0 38 0 27 2 35 5.5 45 98 -21 37 24 41 38 36 16 37 7 39 38 53 22 -0.16 29 0 0 38 1 3 2 35 7.7 46 99 -21 37 25 17 38 36 51 37 8 15 38 53 58 -0.16 30 0 0 38 1 14 2 35 10.0 46 100 -20 37 25 29 38 37 2 37 8 26 38 54 9 -0.16 31 0 0 38 1 0 2 35 12.3 47 101 -19 37 25 15 38 36 49 37 8 13 38 53 55 -0.16 32 0 0 38 0 22 2 35 14.6 48 101 -18 37 24 37 38 36 11 37 7 35 38 53 18 -0.16 33 0 0 37 59 20 2 35 17.0 49 102 -18 37 23 34 38 35 9 37 6 31 38 52 16 -0.16 34 0 0 37 57 52 2 35 19.3 50 103 -17 37 22 6 38 33 42 37 5 3 38 50 49 -0.16 35 0 0 37 56 0 2 35 21.7 50 104 -16 37 20 13 38 31 51 37 3 10 38 48 58 -0.16 36 0 0 37 53 44 2 35 24.2 51 105 -15 37 17 56 38 29 35 37 0 52 38 46 43 -0.16 37 0 0 37 51 2 2 35 26.7 52 105 -14 37 15 13 38 26 55 36 58 9 38 44 3 -0.16 38 0 0 37 47 56 2 35 29.2 53 106 -14 37 12 6 38 23 50 36 55 1 38 40 59 -0.16 39 0 0 37 44 25 2 35 31.7 53 107 -13 37 8 34 38 20 20 36 51 28 38 37 30 -0.16 40 0 0 37 40 29 2 35 34.3 54 108 -12 37 4 36 38 16 26 36 47 30 38 33 36 -0.16 41 0 0 37 36 9 2 35 36.9 55 109 -11 37 0 14 38 12 7 36 43 7 38 29 18 -0.16 42 0 0 37 31 23 2 35 39.5 56 110 -10 36 55 26 38 7 23 36 38 19 38 24 35 -0.16 43 0 0 37 26 12 2 35 42.1 57 111 -10 36 50 13 38 2 14 36 33 5 38 19 27 -0.16 44 0 0 37 20 36 2 35 44.8 57 112 -9 36 44 35 37 56 41 36 27 26 38 13 54 -0.16 45 0 0 37 14 35 2 35 47.5 58 112 -8 36 38 32 37 50 42 36 21 21 38 7 57 -0.16 46 0 0 37 8 9 2 35 50.3 59 113 -7 36 32 3 37 44 18 36 14 51 38 1 34 -0.16 47 0 0 37 1 17 2 35 53.0 60 114 -6 36 25 9 37 37 29 36 7 56 37 54 47 -0.16 48 0 0 36 54 0 2 35 55.8 61 115 -5 36 17 49 37 30 15 36 0 35 37 47 34 -0.16 49 0 0 36 46 18 2 35 58.7 61 116 -5 36 10 4 37 22 36 35 52 48 37 39 56 -0.16 50 0 0 36 38 10 2 36 1.5 62 118 -4 36 1 53 37 14 31 35 44 36 37 31 52 -0.16 51 0 0 36 29 36 2 36 4.4 63 119 -3 35 53 16 37 6 0 35 35 57 37 23 23 -0.16 52 0 0 36 20 37 2 36 7.3 64 120 -2 35 44 13 36 57 4 35 26 53 37 14 29 -0.16 53 0 0 36 11 12 2 36 10.3 64 121 -1 35 34 45 36 47 43 35 17 23 37 5 9 -0.16 54 0 0 36 1 21 2 36 13.3 65 122 0 35 24 50 36 37 55 35 7 26 36 55 23 -0.16 55 0 0 35 51 4 2 36 16.3 66 123 0 35 14 29 36 27 42 34 57 4 36 45 12 -0.16 56 0 0 35 40 21 2 36 19.3 67 125 1 35 3 42 36 17 3 34 46 15 36 34 35 -0.16 57 0 0 35 29 11 2 36 22.4 68 126 2 34 52 29 36 5 58 34 34 59 36 23 31 -0.16 58 0 0 35 17 36 2 36 25.5 68 128 3 34 40 49 35 54 26 34 23 18 36 12 2 -0.16 59 0 0 35 5 34 2 36 28.7 69 129 4 34 28 43 35 42 29 34 11 9 36 0 7 -0.16 60 0 0 34 53 6 2 36 31.8 70 131 5 34 16 10 35 30 5 33 58 35 35 47 45 -0.16 61 0 0 34 40 11 2 36 35.0 71 132 5 34 3 11 35 17 15 33 45 33 35 34 57 -0.16 62 0 0 34 26 49 2 36 38.2 71 134 6 33 49 45 35 3 58 33 32 5 35 21 42 -0.16 63 0 0 34 13 1 2 36 41.5 72 136 7 33 35 52 34 50 15 33 18 10 35 8 1 -0.16 64 0 0 33 58 46 2 36 44.8 73 138 8 33 21 32 34 36 5 33 3 48 34 53 54 -0.16 65 0 0 33 44 5 2 36 48.1 74 140 9 33 6 46 34 21 28 32 48 59 34 39 19 -0.16 66 0 0 33 28 56 2 36 51.5 74 143 10 32 51 32 34 6 25 32 33 43 34 24 18 -0.16 67 0 0 33 13 21 2 36 54.8 75 145 11 32 35 51 33 50 54 32 18 0 34 8 51 -0.16 68 0 0 32 57 18 2 36 58.2 76 148 12 32 19 44 33 34 57 32 1 49 33 52 56 -0.16 69 0 0 32 40 49 2 37 1.7 76 151 13 32 3 9 33 18 33 31 45 12 33 36 34 -0.16 70 0 0 32 23 52 2 37 5.1 77 154 13 31 46 7 33 1 42 31 28 7 33 19 46 -0.16 71 0 0 32 6 29 2 37 8.6 78 158 14 31 28 38 32 44 24 31 10 36 33 2 30 -0.16 72 0 0 31 48 38 2 37 12.1 78 161 15 31 10 41 32 26 38 30 52 37 32 44 48 -0.16 73 0 0 31 30 20 2 37 15.7 79 166 16 30 52 18 32 8 26 30 34 10 32 26 38 -0.17 74 0 0 31 11 35 2 37 19.2 79 170 17 30 33 27 31 49 47 30 15 17 32 8 2 -0.17 75 0 0 30 52 23 2 37 22.8 80 175 18 30 14 9 31 30 40 29 55 56 31 48 58 -0.17 76 0 0 30 32 43 2 37 26.5 80 181 19 29 54 24 31 11 7 29 36 9 31 29 27 -0.17 77 0 0 30 12 37 2 37 30.1 80 187 20 29 34 12 30 51 6 29 15 54 31 9 29 -0.17 78 0 0 29 52 4 2 37 33.8 80 193 21 29 13 33 30 30 39 28 55 12 30 49 5 -0.17 79 0 0 29 31 3 2 37 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35 23 38 29 24 58 16 23 19 31 25 17 20 -0.17 93 0 0 23 51 22 2 38 31.1 73 262 36 23 11 26 24 31 23 22 52 25 24 50 30 -0.17 94 0 0 23 24 1 2 38 35.0 73 265 37 22 44 0 24 4 7 22 24 56 24 23 16 -0.17 95 0 0 22 56 17 2 38 38.9 72 267 38 22 16 10 23 36 28 21 57 4 23 55 40 -0.17 96 0 0 22 28 10 2 38 42.9 71 269 39 21 47 59 23 8 26 21 28 51 23 27 40 -0.17 97 0 0 21 59 42 2 38 46.8 70 270 40 21 19 26 22 40 2 21 0 15 22 59 19 -0.17 98 0 0 21 30 52 2 38 50.7 69 272 41 20 50 32 22 11 17 20 31 19 22 30 36 -0.17 99 0 0 21 1 42 2 38 54.6 68 273 42 20 21 17 21 42 11 20 2 2 22 1 32 -0.17 100 0 0 20 32 11 2 38 58.5 67 275 43 19 51 42 21 12 45 19 32 25 21 32 8 -0.17 101 0 0 20 2 21 2 39 2.4 66 276 44 19 21 48 20 42 59 19 2 29 21 2 24 -0.17 102 0 0 19 32 12 2 39 6.3 65 277 45 18 51 35 20 12 54 18 32 14 20 32 21 -0.17 103 0 0 19 1 45 2 39 10.1 64 278 46 18 21 4 19 42 31 18 1 42 20 2 0 -0.17 104 0 0 18 31 1 2 39 14.0 63 279 47 17 50 16 19 11 50 17 30 52 19 31 21 -0.17 105 0 0 17 59 59 2 39 17.8 62 280 48 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69 - 9 34 13 - 8 16 34 - 9 52 42 - 7 57 59 -0.22 158 0 0 - 9 19 42 2 41 19.1 3 291 68 - 9 58 23 - 8 40 55 -10 16 49 - 8 22 24 -0.24 159 0 0 - 9 43 31 2 41 19.3 2 291 67 -10 22 7 - 9 4 51 -10 40 31 - 8 46 22 -0.27 160 0 0 -10 6 54 2 41 19.4 1 291 66 -10 45 25 - 9 28 19 -11 3 45 - 9 9 53 -0.39 161 0 0 .. .. .... .. .. .. .. .. .. .. .. .. - 9 51 21 .. .. .. - 9 32 58 .... Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1409-00100-1 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 31 44.7418 DE: +20 42 23.726 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 31 44.7422 DE: +20 42 23.723 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.2 * B mag [mag]: 10.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (469) Argentina asteroid class: approx. diameter [km]: 131 approx. diameter ["]: 0.057 distance from Earth [AU]: 3.15840 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 date of fit: 2023 Apr 27 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): 0.026", 0.013", 120.658° remarks: * orbital elements for (469)Argentina : Mean anomaly = 307.8279627038 deg Arg. of pericenter = 215.5903011420 deg Long. of node = 332.6708279772 deg Inclination = 11.4535749800 deg Eccentricity = 0.1614018491 Semimajor axis = 3.1785458157 AU Perihelion dist = 2.6655226437 AU Mag: H = 8.73, G = 0.15 Epoch of elements : MJD 60602.10947688 TDT (2024 Oct 19.1095) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr27,4.57,2024,10,19,2.627450,0.054108,0.150476,15.130450,-5.603434,-0.004988,0.001923,-0.000001,0.000000 75.8025,20.5982,136.83,-10.12,False TYC 1409-00100-1,9.52909492,20.7065906,10.55,10.21,10.03,0.0,0,,9.55220019,20.5981814,4.31,4.05,0,0,0 469,Argentina,14.50,130.613,3.1584,0,0,3.001,-15.61,,7.4,0 0,307.8089,2024,10,19,215.5903,332.6708,11.4536,0.16140,3.17855,2.66552,8.73,5.0,0.15 1.239,0.0260,0.0130,121,0.0136,Known errors,1.03,0,-1,-1 20241019_0100-1,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org