IOTA/IOTA-ES occultation update for (292) Ludovica / TYC 4680-00930-1 event on 2024 Oct 16, 18:53 UT Visible from Summary ------- On 2024 Oct 16 UT, the 30.733 km diameter asteroid (292) Ludovica will occult a 11.0 mag star in the constellation Cetus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.41 mag to 13.31 mag (the magnitude of the asteroid) for at most 2.640 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: 92 * date and approx. time of event: 2024 Oct 16, 18:45 - 2024 Oct 16, 19:02 * geocentric midpoint of event [JD]: 2460600.28748120 * magnitude of target star: 11.02 * magnitude drop [mag]: 2.41 * estimated maximum duration [s]: 2.640 * Moon: 99 % sunlit, 13° distance * Sun: 162° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.49 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.012) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.004", 58°) * approx speed of asteroid's shadow [km/s]: 11.6378 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 4680-00930-1 by 292 Ludovica on 2024 Oct 16 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 - 29 0 0 -20 22 50 19 2 12.9 1 97 12 -20 13 33 -20 32 8 -20 4 30 -20 41 13 .... - 28 0 0 -20 30 2 19 2 12.7 2 97 11 -20 20 44 -20 39 20 -20 11 41 -20 48 25 0.36 - 27 0 0 -20 37 19 19 2 12.3 2 96 10 -20 28 1 -20 46 37 -20 18 58 -20 55 42 0.40 - 26 0 0 -20 44 41 19 2 11.8 3 96 10 -20 35 24 -20 53 59 -20 26 20 -21 3 4 0.42 - 25 0 0 -20 52 8 19 2 11.1 4 95 9 -20 42 51 -21 1 27 -20 33 48 -21 10 32 0.43 - 24 0 0 -20 59 41 19 2 10.3 5 95 8 -20 50 23 -21 8 59 -20 41 20 -21 18 5 0.44 - 23 0 0 -21 7 18 19 2 9.3 6 95 7 -20 58 1 -21 16 37 -20 48 57 -21 25 42 0.44 - 22 0 0 -21 15 1 19 2 8.1 7 94 6 -21 5 43 -21 24 19 -20 56 39 -21 33 25 0.45 - 21 0 0 -21 22 47 19 2 6.8 8 94 5 -21 13 29 -21 32 6 -21 4 26 -21 41 12 0.45 - 20 0 0 -21 30 38 19 2 5.3 9 94 4 -21 21 20 -21 39 57 -21 12 17 -21 49 3 0.45 - 19 0 0 -21 38 34 19 2 3.7 10 93 3 -21 29 16 -21 47 52 -21 20 12 -21 56 58 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0 0 -32 36 6 18 46 10.7 17 273 -14 -32 26 51 -32 45 22 -32 17 50 -32 54 25 0.49 142 0 0 -32 31 10 18 46 8.2 16 272 -14 -32 21 55 -32 40 26 -32 12 54 -32 49 29 0.49 143 0 0 -32 26 7 18 46 5.7 15 272 -13 -32 16 52 -32 35 23 -32 7 51 -32 44 26 0.49 144 0 0 -32 20 57 18 46 3.5 14 271 -12 -32 11 42 -32 30 13 -32 2 40 -32 39 16 0.49 145 0 0 -32 15 39 18 46 1.3 14 271 -11 -32 6 24 -32 24 55 -31 57 22 -32 33 59 0.49 146 0 0 -32 10 14 18 45 59.2 13 270 -11 -32 0 59 -32 19 31 -31 51 57 -32 28 34 0.49 147 0 0 -32 4 43 18 45 57.3 12 269 -10 -31 55 27 -32 13 59 -31 46 25 -32 23 3 0.49 148 0 0 -31 59 4 18 45 55.5 11 269 -9 -31 49 48 -32 8 20 -31 40 47 -32 17 24 0.50 149 0 0 -31 53 18 18 45 53.9 10 268 -8 -31 44 2 -32 2 35 -31 35 1 -32 11 39 0.50 150 0 0 -31 47 26 18 45 52.3 9 268 -8 -31 38 10 -31 56 42 -31 29 8 -32 5 46 0.50 151 0 0 -31 41 26 18 45 50.9 9 267 -7 -31 32 10 -31 50 43 -31 23 8 -31 59 47 0.50 152 0 0 -31 35 20 18 45 49.6 8 267 -6 -31 26 4 -31 44 37 -31 17 2 -31 53 42 0.51 153 0 0 -31 29 8 18 45 48.5 7 266 -5 -31 19 52 -31 38 25 -31 10 49 -31 47 29 0.51 154 0 0 -31 22 49 18 45 47.5 6 266 -4 -31 13 32 -31 32 6 -31 4 30 -31 41 10 0.51 155 0 0 -31 16 23 18 45 46.6 5 265 -4 -31 7 7 -31 25 41 -30 58 4 -31 34 45 0.52 156 0 0 -31 9 51 18 45 45.9 4 265 -3 -31 0 35 -31 19 9 -30 51 32 -31 28 13 0.53 157 0 0 -31 3 13 18 45 45.2 3 264 -2 -30 53 56 -31 12 31 -30 44 53 -31 21 35 0.55 158 0 0 -30 56 29 18 45 44.8 3 264 -1 -30 47 12 -31 5 46 -30 38 9 -31 14 51 0.58 159 0 0 -30 49 38 18 45 44.4 2 263 0 -30 40 21 -30 58 56 -30 31 18 -31 8 1 0.63 160 0 0 -30 42 41 18 45 44.2 1 263 1 -30 33 24 -30 51 59 -30 24 21 -31 1 4 0.81 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 4680-00930-1 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 55 22.7058 DE: -06 49 15.607 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 55 22.7057 DE: -06 49 15.608 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.0 * B mag [mag]: 11.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (292) Ludovica asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.028 distance from Earth [AU]: 1.50090 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 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): 0.022", 0.004", 58.485° remarks: * orbital elements for (292)Ludovica : Mean anomaly = 41.4395978707 deg Arg. of pericenter = 287.2182003525 deg Long. of node = 43.4723877707 deg Inclination = 14.8870756105 deg Eccentricity = 0.0326570806 Semimajor axis = 2.5293245563 AU Perihelion dist = 2.4467242005 AU Mag: H = 9.94, G = 0.15 Epoch of elements : MJD 60599.78748071 TDT (2024 Oct 16.7875) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,2.64,2024,10,16,18.899549,-0.038687,-0.428458,-6.542001,0.591452,0.000776,0.001543,0.000001,0.000000 64.8897,-6.6848,-107.14,-9.28,False TYC 4680-00930-1,0.92297383,-6.8210020,11.29,11.02,10.87,0.0,0,,0.94420711,-6.6848368,2.41,2.14,0,0,0 292,Ludovica,13.31,30.733,1.5009,0,0,-2.573,3.47,,1.4,0 0,41.2467,2024,10,16,287.2182,43.4724,14.8871,0.03266,2.52932,2.44672,9.94,5.0,0.15 1.488,0.0223,0.0043,58,0.0138,Known errors,1.14,0,-1,-1 20241016_0930-1,60140.64 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:20 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org