IOTA/IOTA-ES occultation update for (1284) Latvia / UCAC4 642-021868 event on 2024 Nov 19, 12:10 UT Visible from Summary ------- On 2024 Nov 19 UT, the 40.5756086083715 km diameter asteroid (1284) Latvia will occult a 9.3 mag star in the constellation Auriga for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.94 mag to 13.17 mag (the magnitude of the asteroid) for at most 5.700 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 Nov 19, 11:57 - 2024 Nov 19, 12:22 * geocentric midpoint of event [JD]: 2460634.00702391 * magnitude of target star: 9.26 * magnitude drop [mag]: 3.94 * estimated maximum duration [s]: 5.700 * Moon: 84 % sunlit, 28° distance * Sun: 154° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 51 * 1 sigma uncertainty interval [path widths]: +/- 0.19 * 1 sigma uncertainty interval [seconds]: +/- 3.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.028, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.028", 0.006", 91°) * approx speed of asteroid's shadow [km/s]: 7.1315 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 642-021868 by 1284 Latvia on 2024 Nov 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 84 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 20 41 53 .. .. .. .... 85 0 0 21 7 6 12 21 57.9 1 49 -11 21 25 19 20 48 58 21 32 21 20 42 2 .... 86 0 0 21 58 0 12 21 57.2 2 49 -12 22 16 23 21 39 44 22 23 28 21 32 44 -0.62 87 0 0 22 49 32 12 21 55.9 4 50 -13 23 8 4 22 31 7 23 15 12 22 24 4 -0.65 88 0 0 23 41 40 12 21 54.1 5 50 -14 24 0 21 23 23 5 24 7 33 23 15 59 -0.67 89 0 0 24 34 21 12 21 51.7 6 50 -15 24 53 11 24 15 37 25 0 26 24 8 27 -0.68 90 0 0 25 27 33 12 21 48.8 7 51 -16 25 46 32 25 8 40 25 53 51 25 1 26 -0.68 91 0 0 26 21 13 12 21 45.4 9 51 -17 26 40 22 26 2 11 26 47 44 25 54 54 -0.69 92 0 0 27 15 20 12 21 41.4 10 52 -18 27 34 38 26 56 9 27 42 4 26 48 49 -0.69 93 0 0 28 9 51 12 21 36.9 11 52 -19 28 29 18 27 50 31 28 36 48 27 43 7 -0.69 94 0 0 29 4 44 12 21 31.9 12 53 -20 29 24 20 28 45 15 29 31 54 28 37 48 -0.70 95 0 0 29 59 55 12 21 26.4 13 53 -21 30 19 41 29 40 17 30 27 18 29 32 47 -0.70 96 0 0 30 55 23 12 21 20.4 15 54 -22 31 15 18 30 35 35 31 22 58 30 28 2 -0.70 97 0 0 31 51 3 12 21 13.9 16 54 -23 32 11 7 31 31 7 32 18 51 31 23 30 -0.70 98 0 0 32 46 55 12 21 6.9 17 55 -24 33 7 7 32 26 50 33 14 55 32 19 9 -0.70 99 0 0 33 42 53 12 20 59.5 18 56 -25 34 3 15 33 22 40 34 11 6 33 14 56 -0.70 100 0 0 34 38 57 12 20 51.6 20 56 -26 34 59 27 34 18 35 35 7 21 34 10 48 -0.71 101 0 0 35 35 2 12 20 43.4 21 57 -27 35 55 41 35 14 31 36 3 38 35 6 41 -0.71 102 0 0 36 31 5 12 20 34.7 22 58 -28 36 51 52 36 10 27 36 59 53 36 2 34 -0.71 103 0 0 37 27 4 12 20 25.6 23 58 -29 37 48 0 37 6 18 37 56 4 36 58 22 -0.71 104 0 0 38 22 56 12 20 16.1 24 59 -30 38 43 59 38 2 2 38 52 7 37 54 3 -0.71 105 0 0 39 18 37 12 20 6.3 25 60 -30 39 39 48 38 57 36 39 47 58 38 49 34 -0.71 106 0 0 40 14 5 12 19 56.2 26 61 -31 40 35 23 39 52 56 40 43 36 39 44 52 -0.72 107 0 0 41 9 16 12 19 45.8 27 62 -32 41 30 41 40 48 0 41 38 57 40 39 53 -0.72 108 0 0 42 4 7 12 19 35.1 28 63 -32 42 25 39 41 42 45 42 33 57 41 34 36 -0.72 109 0 0 42 58 36 12 19 24.1 29 63 -33 43 20 14 42 37 8 43 28 35 42 28 56 -0.72 110 0 0 43 52 39 12 19 12.9 31 64 -34 44 14 23 43 31 6 44 22 47 43 22 52 -0.72 111 0 0 44 46 15 12 19 1.5 31 65 -34 45 8 4 44 24 36 45 16 29 44 16 20 -0.72 112 0 0 45 39 19 12 18 49.9 32 66 -35 46 1 13 45 17 35 46 9 41 45 9 17 -0.72 113 0 0 46 31 50 12 18 38.2 33 67 -35 46 53 49 46 10 1 47 2 18 46 1 42 -0.73 114 0 0 47 23 44 12 18 26.3 34 68 -36 47 45 47 47 1 52 47 54 18 46 53 31 -0.73 115 0 0 48 15 0 12 18 14.3 35 70 -36 48 37 7 47 53 4 48 45 39 47 44 42 -0.73 116 0 0 49 5 35 12 18 2.2 36 71 -37 49 27 45 48 43 36 49 36 18 48 35 13 -0.73 117 0 0 49 55 27 12 17 50.1 37 72 -37 50 17 39 49 33 25 50 26 13 49 25 1 -0.73 118 0 0 50 44 33 12 17 37.9 38 73 -38 51 6 47 50 22 30 51 15 22 50 14 5 -0.73 119 0 0 51 32 52 12 17 25.7 39 74 -38 51 55 7 51 10 48 52 3 43 51 2 22 -0.74 120 0 0 52 20 22 12 17 13.5 39 75 -38 52 42 38 51 58 17 52 51 14 51 49 51 -0.74 121 0 0 53 7 2 12 17 1.3 40 77 -39 53 29 18 52 44 56 53 37 54 52 36 31 -0.74 122 0 0 53 52 49 12 16 49.1 41 78 -39 54 15 5 53 30 44 54 23 41 53 22 19 -0.74 123 0 0 54 37 43 12 16 37.0 42 79 -39 54 59 58 54 15 39 55 8 33 54 7 14 -0.74 124 0 0 55 21 42 12 16 25.0 42 81 -39 55 43 55 54 59 40 55 52 30 54 51 15 -0.74 125 0 0 56 4 46 12 16 13.1 43 82 -39 56 26 57 55 42 46 56 35 31 55 34 22 -0.74 126 0 0 56 46 53 12 16 1.3 43 83 -40 57 9 1 56 24 56 57 17 34 56 16 33 -0.74 127 0 0 57 28 3 12 15 49.6 44 85 -40 57 50 8 57 6 9 57 58 40 56 57 48 -0.75 128 0 0 58 8 16 12 15 38.0 45 86 -40 58 30 17 57 46 26 58 38 47 57 38 6 -0.75 129 0 0 58 47 31 12 15 26.6 45 88 -40 59 9 27 58 25 45 59 17 56 58 17 26 -0.75 130 0 0 59 25 47 12 15 15.3 46 89 -40 59 47 39 59 4 6 59 56 6 58 55 50 -0.75 131 0 0 60 3 6 12 15 4.2 46 91 -40 60 24 52 59 41 30 60 33 16 59 33 15 -0.75 132 0 0 60 39 26 12 14 53.2 47 92 -40 61 1 7 60 17 56 61 9 29 60 9 44 -0.75 133 0 0 61 14 49 12 14 42.5 47 94 -40 61 36 23 60 53 25 61 44 42 60 45 15 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11.2 26 301 0 57 8 36 56 24 15 57 17 12 56 15 50 -0.75 - 61 0 0 56 3 24 12 0 3.6 25 302 0 56 25 43 55 41 16 56 34 20 55 32 49 -0.75 - 60 0 0 55 19 27 11 59 56.2 24 303 1 55 41 49 54 57 16 55 50 28 54 48 48 -0.75 - 59 0 0 54 34 31 11 59 48.8 23 304 2 54 56 55 54 12 17 55 5 34 54 3 49 -0.75 - 58 0 0 53 48 35 11 59 41.5 22 305 3 54 11 1 53 26 20 54 19 41 53 17 50 -0.75 - 57 0 0 53 1 41 11 59 34.4 21 306 4 53 24 8 52 39 25 53 32 49 52 30 55 -0.75 - 56 0 0 52 13 51 11 59 27.5 20 307 5 52 36 18 51 51 34 52 44 59 51 43 4 -0.76 - 55 0 0 51 25 5 11 59 20.7 19 308 6 51 47 33 51 2 48 51 56 13 50 54 18 -0.76 - 54 0 0 50 35 26 11 59 14.1 18 309 7 50 57 53 50 13 10 51 6 33 50 4 40 -0.76 - 53 0 0 49 44 54 11 59 7.7 17 309 8 50 7 20 49 22 40 50 16 0 49 14 10 -0.76 - 52 0 0 48 53 33 11 59 1.6 16 310 9 49 15 57 48 31 20 49 24 36 48 22 52 -0.76 - 51 0 0 48 1 25 11 58 55.8 15 311 10 48 23 46 47 39 14 48 32 24 47 30 46 -0.76 - 50 0 0 47 8 31 11 58 50.3 14 312 11 47 30 49 46 46 23 47 39 25 46 37 56 -0.77 - 49 0 0 46 14 54 11 58 45.0 13 313 12 46 37 8 45 52 50 46 45 44 45 44 24 -0.77 - 48 0 0 45 20 37 11 58 40.2 12 313 13 45 42 47 44 58 37 45 51 21 44 50 13 -0.77 - 47 0 0 44 25 43 11 58 35.7 11 314 15 44 47 48 44 3 47 44 56 20 43 55 25 -0.78 - 46 0 0 43 30 14 11 58 31.5 10 315 16 43 52 15 43 8 24 44 0 44 43 0 4 -0.79 - 45 0 0 42 34 14 11 58 27.8 8 315 17 42 56 9 42 12 29 43 4 36 42 4 11 -0.79 - 44 0 0 41 37 46 11 58 24.6 7 316 18 41 59 35 41 16 7 42 8 0 41 7 51 -0.81 - 43 0 0 40 40 53 11 58 21.7 6 317 19 41 2 35 40 19 20 41 10 58 40 11 7 -0.83 - 42 0 0 39 43 38 11 58 19.4 5 317 21 40 5 14 39 22 13 40 13 33 39 14 1 -0.85 - 41 0 0 38 46 5 11 58 17.5 4 318 22 39 7 34 38 24 47 39 15 50 38 16 38 -0.90 - 40 0 0 37 48 18 11 58 16.2 2 319 23 38 9 38 37 27 7 38 17 52 37 19 1 -1.00 - 39 0 0 36 50 19 11 58 15.4 1 319 24 37 11 32 36 29 16 37 19 42 36 21 13 -1.31 - 38 0 0 .. .. .... .. .. .. .. .. .. 36 13 17 .. .. .. 36 21 24 .. .. .. .... Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 642-021868 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 01 17.0363 DE: +38 20 02.320 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 01 17.0367 DE: +38 20 02.324 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 9.3 * B mag [mag]: 9.6 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1284) Latvia asteroid class: Barbarian approx. diameter [km]: 41 approx. diameter ["]: 0.044 distance from Earth [AU]: 1.26010 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#89 date of fit: 2023 Apr 24 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): 0.028", 0.006", 91.326° remarks: * orbital elements for (1284)Latvia : Mean anomaly = 7.1348864139 deg Arg. of pericenter = 115.3632003756 deg Long. of node = 302.6685215526 deg Inclination = 10.8886630824 deg Eccentricity = 0.1730101788 Semimajor axis = 2.6451893084 AU Perihelion dist = 2.1875446331 AU Mag: H = 10.27, G = 0.15 Epoch of elements : MJD 60633.50702221 TDT (2024 Nov 19.5070) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#892023Apr24,5.70,2024,11,19,12.168574,-0.115333,0.593517,-3.952186,-0.763383,-0.001853,-0.001592,0.000001,0.000000 -165.7929,38.3709,-6.15,-19.64,False UCAC4 642-021868,5.02139895,38.3339777,9.57,9.26,9.09,0.1,0,,5.05011086,38.3709000,3.94,3.67,0,0,0 1284,Latvia,13.17,40.667,1.2601,0,0,-2.345,-5.33,,2.0,0 0,7.0187,2024,11,19,115.3632,302.6685,10.8887,0.17301,2.64519,2.18754,10.27,5.0,0.15 1.192,0.0277,0.0063,91,0.0085,Known errors,0.80,0,-1,-1 20241119_021868,60140.70 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org