IOTA/IOTA-ES occultation update for (1303) Luthera / TYC 1887-00457-1 event on 2024 Oct 13, 19:53 UT Visible from Summary ------- On 2024 Oct 13 UT, the 85.5929795357036 km diameter asteroid (1303) Luthera will occult a 10.3 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.98 mag to 15.25 mag (the magnitude of the asteroid) for at most 8.330 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 13, 19:43 - 2024 Oct 13, 20:03 * geocentric midpoint of event [JD]: 2460597.32916421 * magnitude of target star: 10.28 * magnitude drop [mag]: 4.98 * estimated maximum duration [s]: 8.330 * Moon: 81 % sunlit, 127° distance * Sun: 104° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 91 * 1 sigma uncertainty interval [path widths]: +/- 0.22 * 1 sigma uncertainty interval [seconds]: +/- 4.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.002", 74°) * approx speed of asteroid's shadow [km/s]: 10.2943 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1887-00457-1 by 1303 Luthera on 2024 Oct 13 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 58 0 0 -16 59 34 19 44 13.3 0 62 -65 -17 27 26 -16 31 35 -17 39 45 -16 19 11 .... 59 0 0 -16 28 41 19 44 13.5 1 62 -65 -16 56 45 -16 0 32 -17 9 8 -15 48 3 -0.32 60 0 0 -15 56 51 19 44 13.9 3 62 -66 -16 25 6 -15 28 30 -16 37 34 -15 15 56 -0.34 61 0 0 -15 24 1 19 44 14.6 4 62 -66 -15 52 28 -14 55 29 -16 5 1 -14 42 49 -0.35 62 0 0 -14 50 12 19 44 15.5 5 61 -67 -15 18 51 -14 21 27 -15 31 29 -14 8 42 -0.35 63 0 0 -14 15 22 19 44 16.7 6 61 -67 -14 44 13 -13 46 25 -14 56 57 -13 33 35 -0.35 64 0 0 -13 39 32 19 44 18.2 7 61 -68 -14 8 35 -13 10 22 -14 21 24 -12 57 26 -0.36 65 0 0 -13 2 40 19 44 19.9 8 61 -68 -13 31 56 -12 33 17 -13 44 51 -12 20 15 -0.36 66 0 0 -12 24 45 19 44 21.9 9 60 -69 -12 54 15 -11 55 9 -13 7 15 -11 42 1 -0.36 67 0 0 -11 45 48 19 44 24.2 11 60 -69 -12 15 31 -11 15 58 -12 28 38 -11 2 44 -0.36 68 0 0 -11 5 48 19 44 26.9 12 60 -69 -11 35 44 -10 35 44 -11 48 57 -10 22 23 -0.36 69 0 0 -10 24 43 19 44 29.8 13 60 -70 -10 54 54 - 9 54 25 -11 8 13 - 9 40 58 -0.36 70 0 0 - 9 42 35 19 44 33.0 14 60 -70 -10 13 0 - 9 12 2 -10 26 25 - 8 58 29 -0.36 71 0 0 - 8 59 22 19 44 36.6 15 60 -70 - 9 30 2 - 8 28 34 - 9 43 33 - 8 14 55 -0.36 72 0 0 - 8 15 4 19 44 40.5 17 59 -70 - 8 45 59 - 7 44 1 - 8 59 37 - 7 30 15 -0.36 73 0 0 - 7 29 41 19 44 44.8 18 59 -70 - 8 0 51 - 6 58 23 - 8 14 36 - 6 44 30 -0.36 74 0 0 - 6 43 13 19 44 49.4 19 59 -70 - 7 14 39 - 6 11 40 - 7 28 30 - 5 57 40 -0.36 75 0 0 - 5 55 40 19 44 54.3 20 59 -70 - 6 27 21 - 5 23 51 - 6 41 20 - 5 9 44 -0.36 76 0 0 - 5 7 3 19 44 59.6 22 59 -69 - 5 39 0 - 4 34 57 - 5 53 5 - 4 20 43 -0.36 77 0 0 - 4 17 20 19 45 5.3 23 59 -69 - 4 49 33 - 3 44 59 - 5 3 45 - 3 30 37 -0.36 78 0 0 - 3 26 33 19 45 11.4 24 59 -69 - 3 59 3 - 2 53 56 - 4 13 22 - 2 39 26 -0.36 79 0 0 - 2 34 43 19 45 17.8 26 59 -68 - 3 7 28 - 2 1 48 - 3 21 55 - 1 47 12 -0.36 80 0 0 - 1 41 49 19 45 24.6 27 59 -68 - 2 14 51 - 1 8 38 - 2 29 25 - 0 53 54 -0.36 81 0 0 - 0 47 54 19 45 31.9 28 59 -67 - 1 21 12 - 0 14 26 - 1 35 53 0 0 26 -0.36 82 0 0 0 7 3 19 45 39.5 30 59 -67 - 0 26 31 0 40 48 - 0 41 20 0 55 47 -0.36 83 0 0 1 3 0 19 45 47.5 31 60 -66 0 29 9 1 37 1 0 14 13 1 52 8 -0.36 84 0 0 1 59 56 19 45 55.9 32 60 -65 1 25 48 2 34 13 1 10 45 2 49 27 -0.36 85 0 0 2 57 48 19 46 4.7 34 60 -65 2 23 24 3 32 22 2 8 14 3 47 43 -0.36 86 0 0 3 56 35 19 46 13.8 35 60 -64 3 21 55 4 31 26 3 6 38 4 46 54 -0.36 87 0 0 4 56 15 19 46 23.4 37 61 -63 4 21 18 5 31 22 4 5 54 5 46 58 -0.36 88 0 0 5 56 45 19 46 33.4 38 61 -62 5 21 33 6 32 8 5 6 2 6 47 51 -0.36 89 0 0 6 58 4 19 46 43.7 39 62 -61 6 22 36 7 33 43 6 6 58 7 49 33 -0.36 90 0 0 8 0 7 19 46 54.4 41 62 -60 7 24 24 8 36 1 7 8 40 8 51 58 -0.36 91 0 0 9 2 53 19 47 5.5 42 63 -59 8 26 55 9 39 2 8 11 4 9 55 6 -0.36 92 0 0 10 6 17 19 47 17.0 44 63 -58 9 30 5 10 42 41 9 14 8 10 58 51 -0.36 93 0 0 11 10 17 19 47 28.7 45 64 -57 10 33 51 11 46 54 10 17 48 12 3 10 -0.36 94 0 0 12 14 47 19 47 40.8 46 65 -56 11 38 9 12 51 38 11 22 0 13 8 0 -0.36 95 0 0 13 19 45 19 47 53.3 48 65 -55 12 42 54 13 56 49 12 26 40 14 13 17 -0.36 96 0 0 14 25 7 19 48 6.0 49 66 -54 13 48 4 15 2 22 13 31 44 15 18 55 -0.36 97 0 0 15 30 47 19 48 19.0 50 67 -53 14 53 33 16 8 13 14 37 9 16 24 51 -0.36 98 0 0 16 36 41 19 48 32.2 52 68 -51 15 59 17 17 14 18 15 42 49 17 31 0 -0.36 99 0 0 17 42 45 19 48 45.7 53 70 -50 17 5 12 18 20 31 16 48 39 18 37 17 -0.36 100 0 0 18 48 54 19 48 59.4 54 71 -49 18 11 12 19 26 48 17 54 36 19 43 38 -0.36 101 0 0 19 55 2 19 49 13.3 56 72 -48 19 17 14 20 33 4 19 0 34 20 49 57 -0.36 102 0 0 21 1 6 19 49 27.4 57 74 -47 20 23 11 21 39 13 20 6 29 21 56 10 -0.36 103 0 0 22 6 59 19 49 41.6 58 75 -46 21 29 0 22 45 12 21 12 15 23 2 10 -0.35 104 0 0 23 12 38 19 49 55.9 59 77 -44 22 34 34 23 50 54 22 17 48 24 7 55 -0.35 105 0 0 24 17 57 19 50 10.3 61 79 -43 23 39 50 24 56 16 23 23 3 25 13 18 -0.35 106 0 0 25 22 51 19 50 24.8 62 81 -42 24 44 43 26 1 12 24 27 55 26 18 14 -0.35 107 0 0 26 27 16 19 50 39.3 63 83 -41 25 49 7 27 5 37 25 32 19 27 22 40 -0.35 108 0 0 27 31 7 19 50 53.8 64 86 -40 26 52 59 28 9 28 26 36 11 28 26 30 -0.35 109 0 0 28 34 21 19 51 8.3 65 88 -39 27 56 14 29 12 39 27 39 27 29 29 40 -0.35 110 0 0 29 36 51 19 51 22.7 66 91 -37 28 58 48 30 15 7 28 42 2 30 32 7 -0.35 111 0 0 30 38 36 19 51 37.1 67 94 -36 30 0 37 31 16 48 29 43 53 31 33 46 -0.35 112 0 0 31 39 31 19 51 51.4 67 97 -35 31 1 38 32 17 38 30 44 55 32 34 33 -0.35 113 0 0 32 39 33 19 52 5.6 68 100 -34 32 1 46 33 17 33 31 45 6 33 34 26 -0.35 114 0 0 33 38 39 19 52 19.7 69 104 -33 33 0 59 34 16 31 32 44 23 34 33 21 -0.35 115 0 0 34 36 46 19 52 33.6 69 108 -32 33 59 14 35 14 30 33 42 41 35 31 15 -0.35 116 0 0 35 33 51 19 52 47.4 70 111 -31 34 56 28 36 11 25 34 39 59 36 28 7 -0.35 117 0 0 36 29 52 19 53 1.0 70 115 -30 35 52 39 37 7 16 35 36 15 37 23 53 -0.35 118 0 0 37 24 48 19 53 14.4 71 119 -29 36 47 46 38 2 1 36 31 26 38 18 33 -0.35 119 0 0 38 18 36 19 53 27.6 71 123 -28 37 41 46 38 55 38 37 25 32 39 12 4 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Uncertainty in time = +/- 5 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1887-00457-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 29 57.4918 DE: +26 15 26.257 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 29 57.4918 DE: +26 15 26.257 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 10.3 * B mag [mag]: 11.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1303) Luthera asteroid class: approx. diameter [km]: 86 approx. diameter ["]: 0.042 distance from Earth [AU]: 2.84060 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.025", 0.002", 73.713° remarks: * orbital elements for (1303)Luthera : Mean anomaly = 277.6816781301 deg Arg. of pericenter = 101.3451520314 deg Long. of node = 71.8063963447 deg Inclination = 19.5356093322 deg Eccentricity = 0.0970284661 Semimajor axis = 3.2402926413 AU Perihelion dist = 2.9258920167 AU Mag: H = 9.52, G = 0.15 Epoch of elements : MJD 60596.82916159 TDT (2024 Oct 13.8292) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr27,8.33,2024,10,13,19.899941,-0.197088,0.253902,4.588185,3.564968,-0.005670,0.000237,0.000000,0.000000 136.5120,26.2411,-121.99,-8.19,False TYC 1887-00457-1,6.49930326,26.2572937,11.28,10.28,9.74,0.1,0,,6.52503510,26.2411473,4.98,5.07,0,0,0 1303,Luthera,15.25,85.799,2.8406,0,0,1.056,11.04,,4.2,0 0,277.5416,2024,10,13,101.3452,71.8064,19.5356,0.09703,3.24029,2.92589,9.52,5.0,0.15 1.221,0.0247,0.0018,74,0.0092,Known errors,0.89,0,-1,-1 20241013_0457-1,60140.63 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org