IOTA/IOTA-ES occultation update for (10938) Lorenzalevy / UCAC4 416-057411 event on 2024 Dec 29, 17:31 UT Visible from Summary ------- On 2024 Dec 29 UT, the 25.6814087530097 km diameter asteroid (10938) Lorenzalevy will occult a 9.9 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 8.09 mag to 18.01 mag (the magnitude of the asteroid) for at most 1.170 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: 94 * date and approx. time of event: 2024 Dec 29, 17:26 - 2024 Dec 29, 17:36 * geocentric midpoint of event [JD]: 2460674.23000234 * magnitude of target star: 9.92 * magnitude drop [mag]: 8.09 * estimated maximum duration [s]: 1.170 * Moon: 2 % sunlit, 62° distance * Sun: 77° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 26 * 1 sigma uncertainty interval [path widths]: +/- 0.45 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.004", 132°) * approx speed of asteroid's shadow [km/s]: 22.0995 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 416-057411 by 10938 Lorenzalevy on 2024 Dec 29 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 117 0 0 42 31 17 17 26 26.2 0 100 -65 42 24 7 42 38 26 42 17 42 42 44 52 .... 118 0 0 42 23 32 17 26 26.2 1 100 -65 42 16 22 42 30 43 42 9 56 42 37 9 -0.01 119 0 0 42 15 19 17 26 26.3 2 101 -65 42 8 8 42 22 30 42 1 41 42 28 57 -0.06 120 0 0 42 6 37 17 26 26.4 2 102 -64 41 59 25 42 13 49 41 52 58 42 20 17 -0.08 121 0 0 41 57 25 17 26 26.6 3 102 -64 41 50 13 42 4 38 41 43 44 42 11 7 -0.09 122 0 0 41 47 44 17 26 26.9 4 103 -63 41 40 30 41 54 58 41 34 1 42 1 27 -0.09 123 0 0 41 37 33 17 26 27.2 5 104 -63 41 30 19 41 44 48 41 23 48 41 51 18 -0.10 124 0 0 41 26 52 17 26 27.5 6 104 -62 41 19 36 41 34 8 41 13 5 41 40 39 -0.10 125 0 0 41 15 41 17 26 27.9 6 105 -62 41 8 24 41 22 58 41 1 52 41 29 30 -0.10 126 0 0 41 3 59 17 26 28.4 7 106 -61 40 56 41 41 11 17 40 50 8 41 17 50 -0.10 127 0 0 40 51 46 17 26 28.9 8 106 -61 40 44 27 40 59 5 40 37 53 41 5 40 -0.10 128 0 0 40 39 3 17 26 29.4 9 107 -60 40 31 42 40 46 23 40 25 7 40 52 58 -0.11 129 0 0 40 25 48 17 26 30.1 9 108 -59 40 18 26 40 33 9 40 11 50 40 39 46 -0.11 130 0 0 40 12 1 17 26 30.8 10 108 -59 40 4 38 40 19 24 39 58 1 40 26 1 -0.11 131 0 0 39 57 42 17 26 31.5 11 109 -58 39 50 18 40 5 6 39 43 40 40 11 45 -0.11 132 0 0 39 42 51 17 26 32.3 12 109 -58 39 35 26 39 50 17 39 28 46 39 56 57 -0.11 133 0 0 39 27 28 17 26 33.2 13 110 -57 39 20 1 39 34 55 39 13 20 39 41 36 -0.11 134 0 0 39 11 32 17 26 34.1 13 111 -56 39 4 4 39 19 0 38 57 21 39 25 43 -0.11 135 0 0 38 55 3 17 26 35.1 14 111 -56 38 47 33 39 2 32 38 40 49 39 9 16 -0.11 136 0 0 38 38 0 17 26 36.2 15 112 -55 38 30 29 38 45 31 38 23 43 38 52 17 -0.11 137 0 0 38 20 23 17 26 37.4 16 113 -54 38 12 51 38 27 56 38 6 4 38 34 43 -0.11 138 0 0 38 2 13 17 26 38.6 17 113 -54 37 54 38 38 9 47 37 47 50 38 16 36 -0.11 139 0 0 37 43 28 17 26 39.9 18 114 -53 37 35 52 37 51 4 37 29 2 37 57 54 -0.11 140 0 0 37 24 8 17 26 41.2 19 115 -52 37 16 31 37 31 46 37 9 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32 10 8 32 26 11 32 2 55 32 33 24 -0.11 154 0 0 31 50 16 17 27 8.7 31 123 -41 31 42 12 31 58 20 31 34 58 32 5 35 -0.11 155 0 0 31 21 45 17 27 11.3 32 123 -40 31 13 39 31 29 51 31 6 23 31 37 7 -0.11 156 0 0 30 52 35 17 27 14.0 33 124 -39 30 44 28 31 0 43 30 37 10 31 8 2 -0.11 157 0 0 30 22 48 17 27 16.8 34 125 -38 30 14 38 30 30 58 30 7 18 30 38 18 -0.11 158 0 0 29 52 22 17 27 19.8 35 125 -37 29 44 10 30 0 34 29 36 49 30 7 56 -0.11 159 0 0 29 21 18 17 27 22.8 36 126 -36 29 13 4 29 29 32 29 5 41 29 36 55 -0.11 160 0 0 28 49 36 17 27 25.9 37 126 -35 28 41 20 28 57 52 28 33 55 29 5 17 -0.11 161 0 0 28 17 16 17 27 29.2 38 127 -34 28 8 58 28 25 33 28 1 31 28 33 1 -0.11 162 0 0 27 44 18 17 27 32.5 39 127 -33 27 35 58 27 52 38 27 28 29 28 0 7 -0.11 163 0 0 27 10 42 17 27 36.0 41 128 -32 27 2 21 27 19 4 26 54 50 27 26 35 -0.11 164 0 0 26 36 30 17 27 39.5 42 129 -31 26 28 6 26 44 53 26 20 34 26 52 26 -0.11 165 0 0 26 1 40 17 27 43.2 43 129 -30 25 53 14 26 10 5 25 45 41 26 17 40 -0.11 166 0 0 25 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52 47 17 35 57.8 3 264 78 -28 59 53 -28 45 41 -29 6 16 -28 39 18 -0.13 - 71 0 0 -28 47 13 17 35 58.1 2 263 77 -28 54 20 -28 40 7 -29 0 43 -28 33 43 -0.13 - 70 0 0 -28 41 6 17 35 58.2 2 263 77 -28 48 13 -28 33 59 -28 54 37 -28 27 35 -0.13 - 69 0 0 -28 34 26 17 35 58.3 1 262 76 -28 41 34 -28 27 18 -28 47 57 -28 20 54 -0.14 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: UCAC4 416-057411 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 13 21 13.9279 DE: -06 49 55.154 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 13 21 13.9279 DE: -06 49 55.154 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.9 * B mag [mag]: 10.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (10938) Lorenzalevy asteroid class: approx. diameter [km]: 26 approx. diameter ["]: 0.010 distance from Earth [AU]: 3.38620 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 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): 0.019", 0.004", 131.682° remarks: * orbital elements for (10938)Lorenzalevy : Mean anomaly = 251.2247347415 deg Arg. of pericenter = 291.5561049039 deg Long. of node = 8.5841364280 deg Inclination = 21.7502493192 deg Eccentricity = 0.0684322215 Semimajor axis = 3.2200901769 AU Perihelion dist = 2.9997322528 AU Mag: H = 11.87, G = 0.15 Epoch of elements : MJD 60673.73000271 TDT (2024 Dec 29.7300) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Apr27,1.17,2024,12,29,17.520056,0.072138,0.100158,10.136135,-7.269696,-0.005492,0.002249,0.000000,0.000000 -160.8304,-6.9628,-82.21,-23.17,False UCAC4 416-057411,13.35386884,-6.8319871,10.77,9.92,9.46,0.1,0,,13.37550401,-6.9628065,8.09,8.10,0,0,0 10938,Lorenzalevy,18.01,25.927,3.3862,0,0,1.769,-18.89,,2.0,0 0,251.1002,2024,12,29,291.5561,8.5841,21.7502,0.06843,3.22009,2.99973,11.87,5.0,0.15 1.449,0.0190,0.0043,132,0.0048,Known errors,1.08,0,-1,-1 20241229_057411,60140.76 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org