IOTA/IOTA-ES occultation update for (310) Margarita / UCAC4 349-080483 event on 2024 Oct 12, 19:15 UT Visible from Summary ------- On 2024 Oct 12 UT, the 32.4925469054118 km diameter asteroid (310) Margarita will occult a 11.9 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.84 mag to 15.66 mag (the magnitude of the asteroid) for at most 0.870 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 Oct 12, 19:12 - 2024 Oct 12, 19:17 * geocentric midpoint of event [JD]: 2460596.30213958 * magnitude of target star: 11.85 * magnitude drop [mag]: 3.84 * estimated maximum duration [s]: 0.870 * Moon: 71 % sunlit, 65° distance * Sun: 51° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.001", 95°) * approx speed of asteroid's shadow [km/s]: 37.6081 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 349-080483 by 310 Margarita on 2024 Oct 12 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 - 9 52 47 19 12 23.7 0 111 48 -10 2 47 - 9 42 48 -10 4 12 - 9 41 23 .... -153 0 0 -10 15 27 19 12 23.7 1 111 49 -10 25 28 -10 5 27 -10 26 52 -10 4 2 0.30 -152 0 0 -10 38 17 19 12 23.8 2 110 50 -10 48 19 -10 28 16 -10 49 43 -10 26 52 0.31 -151 0 0 -11 1 17 19 12 24.0 3 110 51 -11 11 19 -10 51 16 -11 12 44 -10 49 51 0.32 -150 0 0 -11 24 27 19 12 24.2 4 110 52 -11 34 30 -11 14 25 -11 35 54 -11 13 0 0.32 -149 0 0 -11 47 45 19 12 24.5 5 110 53 -11 57 49 -11 37 43 -11 59 14 -11 36 18 0.32 -148 0 0 -12 11 12 19 12 24.8 6 110 54 -12 21 16 -12 1 9 -12 22 41 -11 59 44 0.32 -147 0 0 -12 34 46 19 12 25.2 8 109 55 -12 44 51 -12 24 42 -12 46 16 -12 23 17 0.32 -146 0 0 -12 58 28 19 12 25.7 9 109 56 -13 8 33 -12 48 23 -13 9 58 -12 46 58 0.32 -145 0 0 -13 22 16 19 12 26.2 10 109 57 -13 32 21 -13 12 11 -13 33 46 -13 10 46 0.33 -144 0 0 -13 46 9 19 12 26.8 11 109 58 -13 56 15 -13 36 4 -13 57 41 -13 34 39 0.33 -143 0 0 -14 10 9 19 12 27.4 12 108 58 -14 20 15 -14 0 3 -14 21 40 -13 58 38 0.33 -142 0 0 -14 34 13 19 12 28.1 13 108 59 -14 44 19 -14 24 6 -14 45 45 -14 22 41 0.33 -141 0 0 -14 58 21 19 12 28.9 14 108 60 -15 8 28 -14 48 14 -15 9 53 -14 46 49 0.33 -140 0 0 -15 22 32 19 12 29.7 15 108 61 -15 32 40 -15 12 25 -15 34 5 -15 11 0 0.33 -139 0 0 -15 46 47 19 12 30.5 16 107 62 -15 56 54 -15 36 40 -15 58 20 -15 35 14 0.33 -138 0 0 -16 11 3 19 12 31.5 17 107 63 -16 21 12 -16 0 56 -16 22 37 -15 59 30 0.33 -137 0 0 -16 35 22 19 12 32.4 18 107 64 -16 45 30 -16 25 14 -16 46 56 -16 23 49 0.33 -136 0 0 -16 59 41 19 12 33.5 19 106 64 -17 9 50 -16 49 33 -17 11 16 -16 48 8 0.33 -135 0 0 -17 24 1 19 12 34.5 20 106 65 -17 34 10 -17 13 53 -17 35 36 -17 12 28 0.33 -134 0 0 -17 48 21 19 12 35.7 21 106 66 -17 58 30 -17 38 13 -17 59 56 -17 36 47 0.33 -133 0 0 -18 12 40 19 12 36.9 22 105 67 -18 22 49 -18 2 32 -18 24 15 -18 1 6 0.33 -132 0 0 -18 36 58 19 12 38.1 23 105 67 -18 47 7 -18 26 49 -18 48 33 -18 25 23 0.33 -131 0 0 -19 1 13 19 12 39.4 24 105 68 -19 11 22 -18 51 5 -19 12 48 -18 49 39 0.33 -130 0 0 -19 25 26 19 12 40.8 25 104 69 -19 35 35 -19 15 18 -19 37 1 -19 13 52 0.33 -129 0 0 -19 49 36 19 12 42.1 26 104 69 -19 59 45 -19 39 27 -20 1 11 -19 38 2 0.33 -128 0 0 -20 13 42 19 12 43.6 27 103 70 -20 23 51 -20 3 33 -20 25 17 -20 2 7 0.33 -127 0 0 -20 37 43 19 12 45.1 28 103 70 -20 47 52 -20 27 35 -20 49 18 -20 26 9 0.33 -126 0 0 -21 1 39 19 12 46.6 29 102 71 -21 11 48 -20 51 31 -21 13 14 -20 50 6 0.33 -125 0 0 -21 25 30 19 12 48.2 30 102 71 -21 35 39 -21 15 22 -21 37 5 -21 13 57 0.33 -124 0 0 -21 49 15 19 12 49.8 31 101 72 -21 59 24 -21 39 7 -22 0 49 -21 37 42 0.33 -123 0 0 -22 12 53 19 12 51.4 32 101 72 -22 23 1 -22 2 45 -22 24 27 -22 1 20 0.33 -122 0 0 -22 36 24 19 12 53.1 33 100 72 -22 46 32 -22 26 16 -22 47 58 -22 24 51 0.33 -121 0 0 -22 59 47 19 12 54.9 34 100 72 -23 9 55 -22 49 40 -23 11 20 -22 48 14 0.33 -120 0 0 -23 23 1 19 12 56.7 35 99 73 -23 33 9 -23 12 55 -23 34 34 -23 11 29 0.33 -119 0 0 -23 46 7 19 12 58.5 36 99 73 -23 56 14 -23 36 1 -23 57 40 -23 34 35 0.33 -118 0 0 -24 9 4 19 13 0.3 37 98 73 -24 19 10 -23 58 58 -24 20 36 -23 57 32 0.33 -117 0 0 -24 31 50 19 13 2.2 38 98 73 -24 41 57 -24 21 45 -24 43 22 -24 20 19 0.33 -116 0 0 -24 54 27 19 13 4.1 39 97 72 -25 4 32 -24 44 21 -25 5 58 -24 42 56 0.33 -115 0 0 -25 16 52 19 13 6.1 40 96 72 -25 26 57 -25 6 47 -25 28 23 -25 5 22 0.33 -114 0 0 -25 39 6 19 13 8.1 41 96 72 -25 49 11 -25 29 2 -25 50 36 -25 27 37 0.33 -113 0 0 -26 1 9 19 13 10.1 42 95 72 -26 11 13 -25 51 5 -26 12 38 -25 49 40 0.33 -112 0 0 -26 22 59 19 13 12.1 43 94 71 -26 33 2 -26 12 56 -26 34 28 -26 11 31 0.33 -111 0 0 -26 44 36 19 13 14.2 44 94 71 -26 54 40 -26 34 34 -26 56 5 -26 33 9 0.33 -110 0 0 -27 6 1 19 13 16.3 45 93 71 -27 16 4 -26 55 59 -27 17 29 -26 54 35 0.33 -109 0 0 -27 27 13 19 13 18.4 46 92 70 -27 37 14 -27 17 11 -27 38 39 -27 15 47 0.33 -108 0 0 -27 48 10 19 13 20.6 46 91 70 -27 58 11 -27 38 10 -27 59 36 -27 36 45 0.33 -107 0 0 -28 8 54 19 13 22.8 47 90 69 -28 18 54 -27 58 54 -28 20 19 -27 57 29 0.33 -106 0 0 -28 29 23 19 13 25.0 48 90 69 -28 39 22 -28 19 23 -28 40 47 -28 17 59 0.33 -105 0 0 -28 49 37 19 13 27.2 49 89 68 -28 59 36 -28 39 38 -29 1 0 -28 38 14 0.33 -104 0 0 -29 9 36 19 13 29.4 50 88 67 -29 19 34 -28 59 38 -29 20 58 -28 58 14 0.33 -103 0 0 -29 29 19 19 13 31.7 51 87 67 -29 39 17 -29 19 23 -29 40 41 -29 17 59 0.33 -102 0 0 -29 48 47 19 13 33.9 52 86 66 -29 58 44 -29 38 51 -30 0 8 -29 37 27 0.33 -101 0 0 -30 7 59 19 13 36.2 52 85 66 -30 17 55 -29 58 4 -30 19 19 -29 56 40 0.33 -100 0 0 -30 26 55 19 13 38.5 53 84 65 -30 36 50 -30 17 0 -30 38 14 -30 15 37 0.33 - 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73 0 0 -37 4 26 19 14 43.6 70 36 44 -37 13 58 -36 54 55 -37 15 18 -36 53 34 0.33 - 72 0 0 -37 14 43 19 14 46.0 71 33 43 -37 24 14 -37 5 12 -37 25 35 -37 3 52 0.33 - 71 0 0 -37 24 40 19 14 48.4 71 30 42 -37 34 11 -37 15 11 -37 35 31 -37 13 50 0.33 - 70 0 0 -37 34 18 19 14 50.8 71 27 42 -37 43 48 -37 24 49 -37 45 8 -37 23 29 0.33 - 69 0 0 -37 43 37 19 14 53.2 71 24 41 -37 53 6 -37 34 9 -37 54 26 -37 32 49 0.33 - 68 0 0 -37 52 36 19 14 55.6 72 21 40 -38 2 4 -37 43 8 -38 3 24 -37 41 48 0.33 - 67 0 0 -38 1 16 19 14 58.0 72 18 39 -38 10 43 -37 51 49 -38 12 3 -37 50 29 0.33 - 66 0 0 -38 9 36 19 15 0.4 72 15 39 -38 19 3 -38 0 9 -38 20 23 -37 58 50 0.33 - 65 0 0 -38 17 36 19 15 2.8 72 12 38 -38 27 3 -38 8 10 -38 28 22 -38 6 51 0.33 - 64 0 0 -38 25 17 19 15 5.2 72 9 37 -38 34 43 -38 15 52 -38 36 3 -38 14 33 0.33 - 63 0 0 -38 32 39 19 15 7.5 72 6 36 -38 42 4 -38 23 14 -38 43 24 -38 21 55 0.33 - 62 0 0 -38 39 41 19 15 9.9 72 3 35 -38 49 6 -38 30 17 -38 50 25 -38 28 58 0.33 - 61 0 0 -38 46 24 19 15 12.3 72 360 35 -38 55 48 -38 37 0 -38 57 7 -38 35 41 0.33 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.010", 0.001", 95.326° remarks: * orbital elements for (310)Margarita : Mean anomaly = 61.1893586387 deg Arg. of pericenter = 324.8541852696 deg Long. of node = 229.0406724947 deg Inclination = 3.1718645970 deg Eccentricity = 0.1170281793 Semimajor axis = 2.7611650770 AU Perihelion dist = 2.4380309552 AU Mag: H = 10.16, G = 0.15 Epoch of elements : MJD 60595.80213954 TDT (2024 Oct 12.8021) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,0.87,2024,10,12,19.251350,-0.041162,-0.305441,21.044389,-2.778720,0.004380,-0.000508,-0.000001,0.000000 -61.1223,-20.4324,-112.20,-7.80,False UCAC4 349-080483,16.60929833,-20.3819353,13.26,11.85,11.09,0.1,0,,16.63333772,-20.4323871,3.84,4.15,0,0,0 310,Margarita,15.66,32.721,3.1499,0,0,4.180,-7.76,,1.6,0 0,61.0170,2024,10,12,324.8542,229.0407,3.1719,0.11703,2.76117,2.43803,10.16,5.0,0.15 1.070,0.0097,0.0009,95,0.0010,Known errors,0.98,0,-1,-1 20241012_080483,60140.63 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:06 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org