IOTA/IOTA-ES occultation update for (711) Marmulla / UCAC4 438-056269 event on 2024 Dec 19, 10:20 UT Visible from Summary ------- On 2024 Dec 19 UT, the 9.745 km diameter asteroid (711) Marmulla will occult a 11.7 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.13 mag to 16.86 mag (the magnitude of the asteroid) for at most 0.420 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 Dec 19, 10:16 - 2024 Dec 19, 10:24 * geocentric midpoint of event [JD]: 2460663.93088071 * magnitude of target star: 11.74 * magnitude drop [mag]: 5.13 * estimated maximum duration [s]: 0.420 * Moon: 82 % sunlit, 51° distance * Sun: 79° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 10 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.001", 119°) * approx speed of asteroid's shadow [km/s]: 23.2773 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 438-056269 by 711 Marmulla on 2024 Dec 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 -143 0 0 5 48 22 10 16 11.9 0 93 -69 5 45 32 5 51 11 5 44 11 5 52 32 .... -142 0 0 5 45 12 10 16 12.0 1 93 -68 5 42 22 5 48 2 5 41 1 5 49 23 0.23 -141 0 0 5 41 33 10 16 12.1 2 93 -68 5 38 42 5 44 23 5 37 21 5 45 44 0.30 -140 0 0 5 37 23 10 16 12.4 3 93 -67 5 34 32 5 40 13 5 33 11 5 41 34 0.33 -139 0 0 5 32 42 10 16 12.7 4 93 -67 5 29 52 5 35 33 5 28 31 5 36 54 0.34 -138 0 0 5 27 32 10 16 13.1 5 93 -66 5 24 41 5 30 22 5 23 20 5 31 43 0.35 -137 0 0 5 21 51 10 16 13.6 6 93 -65 5 19 0 5 24 41 5 17 39 5 26 3 0.36 -136 0 0 5 15 40 10 16 14.2 7 93 -64 5 12 49 5 18 30 5 11 27 5 19 52 0.36 -135 0 0 5 8 58 10 16 14.9 8 93 -64 5 6 7 5 11 49 5 4 45 5 13 10 0.36 -134 0 0 5 1 46 10 16 15.6 9 94 -63 4 58 55 5 4 37 4 57 33 5 5 59 0.37 -133 0 0 4 54 4 10 16 16.5 10 94 -62 4 51 12 4 56 55 4 49 51 4 58 16 0.37 -132 0 0 4 45 51 10 16 17.5 11 94 -61 4 42 59 4 48 42 4 41 37 4 50 4 0.37 -131 0 0 4 37 8 10 16 18.5 12 94 -60 4 34 16 4 39 59 4 32 54 4 41 21 0.37 -130 0 0 4 27 54 10 16 19.6 13 94 -59 4 25 2 4 30 46 4 23 40 4 32 8 0.37 -129 0 0 4 18 10 10 16 20.9 14 94 -59 4 15 18 4 21 2 4 13 56 4 22 24 0.37 -128 0 0 4 7 56 10 16 22.2 15 94 -58 4 5 4 4 10 48 4 3 41 4 12 11 0.37 -127 0 0 3 57 12 10 16 23.6 16 94 -57 3 54 19 4 0 4 3 52 57 4 1 27 0.38 -126 0 0 3 45 57 10 16 25.1 17 94 -56 3 43 4 3 48 50 3 41 41 3 50 12 0.38 -125 0 0 3 34 12 10 16 26.7 18 94 -55 3 31 19 3 37 5 3 29 56 3 38 28 0.38 -124 0 0 3 21 57 10 16 28.4 19 94 -54 3 19 3 3 24 50 3 17 40 3 26 13 0.38 -123 0 0 3 9 11 10 16 30.2 20 94 -53 3 6 17 3 12 5 3 4 55 3 13 28 0.38 -122 0 0 2 55 56 10 16 32.0 21 94 -52 2 53 2 2 58 50 2 51 39 3 0 13 0.38 -121 0 0 2 42 10 10 16 34.0 22 94 -51 2 39 16 2 45 5 2 37 53 2 46 28 0.38 -120 0 0 2 27 55 10 16 36.0 23 94 -50 2 25 0 2 30 50 2 23 37 2 32 13 0.38 -119 0 0 2 13 9 10 16 38.2 24 94 -49 2 10 14 2 16 5 2 8 51 2 17 28 0.38 -118 0 0 1 57 54 10 16 40.4 25 94 -48 1 54 59 2 0 50 1 53 35 2 2 13 0.38 -117 0 0 1 42 10 10 16 42.8 26 94 -47 1 39 14 1 45 5 1 37 50 1 46 29 0.38 -116 0 0 1 25 55 10 16 45.2 27 94 -46 1 22 59 1 28 51 1 21 35 1 30 15 0.38 -115 0 0 1 9 12 10 16 47.7 28 94 -45 1 6 15 1 12 8 1 4 51 1 13 32 0.38 -114 0 0 0 51 59 10 16 50.3 29 94 -44 0 49 2 0 54 56 0 47 37 0 56 20 0.38 -113 0 0 0 34 17 10 16 53.0 31 93 -43 0 31 19 0 37 14 0 29 55 0 38 38 0.38 -112 0 0 0 16 5 10 16 55.8 32 93 -42 0 13 8 0 19 3 0 11 43 0 20 28 0.38 -111 0 0 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.010", 0.001", 119.399° remarks: * orbital elements for (711)Marmulla : Mean anomaly = 247.4277773329 deg Arg. of pericenter = 300.2757051096 deg Long. of node = 357.0024106393 deg Inclination = 6.0871641029 deg Eccentricity = 0.1961751592 Semimajor axis = 2.2365580330 AU Perihelion dist = 1.7978009047 AU Mag: H = 11.84, G = 0.15 Epoch of elements : MJD 60663.43088100 TDT (2024 Dec 19.4309) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Feb11,0.42,2024,12,19,10.341137,-0.158532,-0.317156,11.753003,-5.872226,-0.005223,0.002255,0.000000,0.000000 -54.4819,-2.6872,24.20,-23.42,False UCAC4 438-056269,12.58842119,-2.5499033,12.10,11.74,11.55,0.0,0,,12.60972637,-2.6871767,5.13,4.87,0,0,0 711,Marmulla,16.86,9.745,2.4689,0,0,2.795,-20.92,,1.0,0 0,247.3008,2024,12,19,300.2757,357.0024,6.0872,0.19618,2.23656,1.79780,11.84,5.0,0.15 1.239,0.0097,0.0012,119,0.0013,Known errors,1.04,0,-1,-1 20241219_056269,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org