IOTA/IOTA-ES occultation update for (735) Marghanna / UCAC4 262-183542 event on 2024 Nov 03, 18:00 UT Visible from Summary ------- On 2024 Nov 03 UT, the 73.633 km diameter asteroid (735) Marghanna will occult a 11.7 mag star in the constellation Corona Australis for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.59 mag to 14.21 mag (the magnitude of the asteroid) for at most 2.220 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: 100 * date and approx. time of event: 2024 Nov 03, 17:56 - 2024 Nov 03, 18:03 * geocentric midpoint of event [JD]: 2460618.25011175 * magnitude of target star: 11.73 * magnitude drop [mag]: 2.59 * estimated maximum duration [s]: 2.220 * Moon: 4 % sunlit, 40° distance * Sun: 65° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 75 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.002", 91°) * approx speed of asteroid's shadow [km/s]: 33.2101 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 262-183542 by 735 Marghanna on 2024 Nov 3 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 -129 0 0 -20 1 39 17 57 0.4 1 130 56 -20 28 15 -19 35 6 -20 32 48 -19 30 34 .... -128 0 0 -20 49 29 17 57 0.6 2 130 57 -21 16 2 -20 22 59 -21 20 34 -20 18 27 0.22 -127 0 0 -21 36 50 17 57 0.7 3 129 58 -22 3 19 -21 10 23 -22 7 51 -21 5 52 0.20 -126 0 0 -22 23 41 17 57 1.0 4 129 58 -22 50 6 -21 57 17 -22 54 37 -21 52 47 0.20 -125 0 0 -23 9 59 17 57 1.4 6 129 59 -23 36 21 -22 43 40 -23 40 51 -22 39 11 0.19 -124 0 0 -23 55 44 17 57 1.8 7 128 60 -24 22 1 -23 29 30 -24 26 31 -23 25 1 0.19 -123 0 0 -24 40 54 17 57 2.4 8 128 61 -25 7 7 -24 14 45 -25 11 36 -24 10 17 0.19 -122 0 0 -25 25 29 17 57 3.0 9 127 61 -25 51 36 -24 59 24 -25 56 4 -24 54 57 0.19 -121 0 0 -26 9 25 17 57 3.7 10 127 62 -26 35 28 -25 43 26 -26 39 55 -25 38 59 0.19 -120 0 0 -26 52 44 17 57 4.4 12 127 63 -27 18 41 -26 26 49 -27 23 7 -26 22 24 0.19 -119 0 0 -27 35 23 17 57 5.2 13 126 63 -28 1 14 -27 9 34 -28 5 39 -27 5 10 0.18 -118 0 0 -28 17 21 17 57 6.1 14 126 64 -28 43 7 -27 51 38 -28 47 31 -27 47 15 0.18 -117 0 0 -28 58 39 17 57 7.0 15 125 64 -29 24 18 -28 33 2 -29 28 41 -28 28 40 0.18 -116 0 0 -29 39 14 17 57 8.1 16 125 65 -30 4 47 -29 13 44 -30 9 9 -29 9 23 0.18 -115 0 0 -30 19 7 17 57 9.1 17 124 65 -30 44 34 -29 53 43 -30 48 55 -29 49 23 0.18 -114 0 0 -30 58 18 17 57 10.2 18 124 66 -31 23 38 -30 33 0 -31 27 57 -30 28 41 0.18 -113 0 0 -31 36 44 17 57 11.4 19 123 66 -32 1 57 -31 11 33 -32 6 16 -31 7 16 0.18 -112 0 0 -32 14 27 17 57 12.6 20 122 66 -32 39 33 -31 49 23 -32 43 51 -31 45 6 0.18 -111 0 0 -32 51 26 17 57 13.9 21 122 66 -33 16 25 -32 26 29 -33 20 41 -32 22 13 0.18 -110 0 0 -33 27 40 17 57 15.2 22 121 67 -33 52 32 -33 2 50 -33 56 47 -32 58 36 0.18 -109 0 0 -34 3 10 17 57 16.6 23 121 67 -34 27 55 -33 38 27 -34 32 9 -33 34 14 0.18 -108 0 0 -34 37 55 17 57 18.0 24 120 67 -35 2 33 -34 13 19 -35 6 45 -34 9 7 0.18 -107 0 0 -35 11 55 17 57 19.4 25 119 67 -35 36 26 -34 47 27 -35 40 37 -34 43 16 0.18 -106 0 0 -35 45 11 17 57 20.9 26 119 67 -36 9 34 -35 20 50 -36 13 44 -35 16 40 0.18 -105 0 0 -36 17 42 17 57 22.4 27 118 67 -36 41 58 -35 53 28 -36 46 7 -35 49 20 0.18 -104 0 0 -36 49 29 17 57 24.0 28 118 67 -37 13 37 -36 25 22 -37 17 45 -36 21 15 0.18 -103 0 0 -37 20 31 17 57 25.5 29 117 66 -37 44 33 -36 56 32 -37 48 39 -36 52 26 0.18 -102 0 0 -37 50 49 17 57 27.1 30 116 66 -38 14 44 -37 26 57 -38 18 49 -37 22 53 0.18 -101 0 0 -38 20 24 17 57 28.7 31 116 66 -38 44 11 -37 56 39 -38 48 15 -37 52 36 0.18 -100 0 0 -38 49 15 17 57 30.4 32 115 66 -39 12 55 -38 25 37 -39 16 57 -38 21 35 0.18 - 99 0 0 -39 17 23 17 57 32.1 33 114 66 -39 40 55 -38 53 52 -39 44 57 -38 49 52 0.18 - 98 0 0 -39 44 48 17 57 33.8 34 114 65 -40 8 13 -39 21 24 -40 12 13 -39 17 25 0.18 - 97 0 0 -40 11 30 17 57 35.5 35 113 65 -40 34 48 -39 48 14 -40 38 47 -39 44 16 0.18 - 96 0 0 -40 37 31 17 57 37.2 36 112 65 -41 0 42 -40 14 21 -41 4 39 -40 10 24 0.18 - 95 0 0 -41 2 49 17 57 39.0 36 111 64 -41 25 53 -40 39 47 -41 29 50 -40 35 51 0.18 - 94 0 0 -41 27 27 17 57 40.7 37 111 64 -41 50 24 -41 4 31 -41 54 19 -41 0 37 0.18 - 93 0 0 -41 51 23 17 57 42.5 38 110 64 -42 14 14 -41 28 35 -42 18 8 -41 24 41 0.18 - 92 0 0 -42 14 40 17 57 44.3 39 109 63 -42 37 23 -41 51 58 -42 41 16 -41 48 5 0.18 - 91 0 0 -42 37 16 17 57 46.1 40 108 63 -42 59 53 -42 14 41 -43 3 45 -42 10 49 0.18 - 90 0 0 -42 59 13 17 57 47.9 41 108 62 -43 21 44 -42 36 44 -43 25 35 -42 32 54 0.18 - 89 0 0 -43 20 31 17 57 49.7 41 107 62 -43 42 55 -42 58 9 -43 46 45 -42 54 20 0.18 - 88 0 0 -43 41 11 17 57 51.6 42 106 61 -44 3 29 -43 18 55 -44 7 18 -43 15 7 0.17 - 87 0 0 -44 1 13 17 57 53.4 43 105 61 -44 23 24 -43 39 2 -44 27 12 -43 35 15 0.17 - 86 0 0 -44 20 37 17 57 55.3 44 104 60 -44 42 42 -43 58 33 -44 46 29 -43 54 47 0.17 - 85 0 0 -44 39 24 17 57 57.2 45 103 60 -45 1 24 -44 17 26 -45 5 9 -44 13 41 0.17 - 84 0 0 -44 57 35 17 57 59.0 45 103 59 -45 19 29 -44 35 42 -45 23 13 -44 31 58 0.17 - 83 0 0 -45 15 9 17 58 0.9 46 102 59 -45 36 58 -44 53 22 -45 40 41 -44 49 39 0.17 - 82 0 0 -45 32 8 17 58 2.8 47 101 58 -45 53 51 -45 10 27 -45 57 34 -45 6 44 0.17 - 81 0 0 -45 48 32 17 58 4.7 48 100 58 -46 10 10 -45 26 56 -46 13 51 -45 23 14 0.17 - 80 0 0 -46 4 21 17 58 6.6 48 99 57 -46 25 53 -45 42 50 -46 29 34 -45 39 10 0.17 - 79 0 0 -46 19 36 17 58 8.5 49 98 57 -46 41 3 -45 58 10 -46 44 43 -45 54 30 0.17 - 78 0 0 -46 34 17 17 58 10.4 50 97 56 -46 55 39 -46 12 56 -46 59 19 -46 9 17 0.17 - 77 0 0 -46 48 25 17 58 12.3 50 96 56 -47 9 42 -46 27 8 -47 13 21 -46 23 30 0.17 - 76 0 0 -47 1 59 17 58 14.2 51 96 55 -47 23 12 -46 40 47 -47 26 50 -46 37 10 0.17 - 75 0 0 -47 15 1 17 58 16.2 52 95 55 -47 36 10 -46 53 54 -47 39 47 -46 50 18 0.17 - 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9 56 24 18 3 4.5 22 233 -42 -10 23 18 - 9 29 33 -10 27 54 - 9 24 58 0.19 45 0 0 - 9 4 45 18 3 6.1 21 233 -43 - 9 31 37 - 8 37 56 - 9 36 13 - 8 33 21 0.19 46 0 0 - 8 13 7 18 3 7.6 20 233 -45 - 8 39 57 - 7 46 20 - 8 44 32 - 7 41 45 0.19 47 0 0 - 7 21 32 18 3 9.1 18 233 -46 - 7 48 20 - 6 54 47 - 7 52 55 - 6 50 13 0.20 48 0 0 - 6 30 3 18 3 10.5 17 233 -47 - 6 56 48 - 6 3 21 - 7 1 22 - 5 58 47 0.20 49 0 0 - 5 38 42 18 3 11.7 16 232 -49 - 6 5 24 - 5 12 2 - 6 9 58 - 5 7 30 0.20 50 0 0 - 4 47 31 18 3 12.9 14 232 -50 - 5 14 9 - 4 20 55 - 5 18 43 - 4 16 23 0.20 51 0 0 - 3 56 32 18 3 13.9 13 232 -51 - 4 23 7 - 3 30 0 - 4 27 40 - 3 25 29 0.20 52 0 0 - 3 5 49 18 3 14.9 12 232 -52 - 3 32 20 - 2 39 21 - 3 36 52 - 2 34 50 0.20 53 0 0 - 2 15 23 18 3 15.8 10 232 -54 - 2 41 49 - 1 48 59 - 2 46 20 - 1 44 29 0.21 54 0 0 - 1 25 15 18 3 16.5 9 232 -55 - 1 51 37 - 0 58 56 - 1 56 8 - 0 54 27 0.21 55 0 0 - 0 35 29 18 3 17.2 8 232 -56 - 1 1 46 - 0 9 15 - 1 6 16 - 0 4 46 0.22 56 0 0 0 13 54 18 3 17.7 7 232 -58 - 0 12 18 0 40 3 - 0 16 47 0 44 31 0.22 57 0 0 1 2 52 18 3 18.2 5 232 -59 0 36 46 1 28 55 0 32 18 1 33 22 0.24 58 0 0 1 51 23 18 3 18.5 4 232 -60 1 25 23 2 17 21 1 20 56 2 21 47 0.25 59 0 0 2 39 26 18 3 18.8 3 232 -61 2 13 31 3 5 18 2 9 5 3 9 43 0.29 60 0 0 3 26 59 18 3 19.0 1 232 -63 3 1 10 3 52 45 2 56 45 3 57 8 0.38 61 0 0 4 13 59 18 3 19.0 0 232 -64 3 48 17 .. .. .. 3 43 53 .. .. .. 1.56 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 262-183542 * constellation : Corona Australis * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 13 41.5676 DE: -37 40 34.060 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 13 41.5674 DE: -37 40 34.060 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.7 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (735) Marghanna asteroid class: approx. diameter [km]: 74 approx. diameter ["]: 0.047 distance from Earth [AU]: 2.17540 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.013", 0.002", 90.964° remarks: * orbital elements for (735)Marghanna : Mean anomaly = 339.8715578288 deg Arg. of pericenter = 309.9902888704 deg Long. of node = 42.9172935869 deg Inclination = 16.8667665361 deg Eccentricity = 0.3205561347 Semimajor axis = 2.7300745071 AU Perihelion dist = 1.8549323756 AU Mag: H = 9.84, G = 0.15 Epoch of elements : MJD 60617.75011146 TDT (2024 Nov 03.7501) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,2.22,2024,11,3,18.002682,0.043604,-0.161884,18.094853,4.892973,0.004839,0.000016,-0.000001,0.000000 -24.6860,-37.6361,-94.15,-15.38,False UCAC4 262-183542,19.22821327,-37.6761277,11.98,11.73,11.60,0.0,0,,19.25594225,-37.6361090,2.59,2.30,0,0,0 735,Marghanna,14.21,73.633,2.1754,0,0,6.159,19.79,,4.2,0 0,339.7077,2024,11,3,309.9903,42.9173,16.8668,0.32056,2.73007,1.85493,9.84,5.0,0.15 1.085,0.0130,0.0018,91,0.0040,Known errors,0.94,0,-1,-1 20241103_183542,60140.68 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org