IOTA/IOTA-ES occultation update for (292) Ludovica / UCAC4 416-001351 event on 2024 Oct 08, 04:47 UT Visible from Summary ------- On 2024 Oct 08 UT, the 30.727 km diameter asteroid (292) Ludovica will occult a 11.7 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 1.78 mag to 13.19 mag (the magnitude of the asteroid) for at most 2.570 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: 95 * date and approx. time of event: 2024 Oct 08, 04:38 - 2024 Oct 08, 04:56 * geocentric midpoint of event [JD]: 2460591.69967338 * magnitude of target star: 11.65 * magnitude drop [mag]: 1.78 * estimated maximum duration [s]: 2.570 * Moon: 25 % sunlit, 115° distance * Sun: 167° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 33 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.005", 58°) * approx speed of asteroid's shadow [km/s]: 11.9561 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 416-001351 by 292 Ludovica on 2024 Oct 8 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 -167 0 0 -19 18 55 4 55 55.5 0 97 2 -19 10 2 -19 27 48 -19 2 18 -19 35 33 .... -166 0 0 -19 26 5 4 55 55.4 1 97 1 -19 17 13 -19 34 58 -19 9 29 -19 42 44 0.25 -165 0 0 -19 33 15 4 55 55.1 2 96 0 -19 24 23 -19 42 8 -19 16 39 -19 49 54 0.29 -164 0 0 -19 40 24 4 55 54.7 3 96 -1 -19 31 32 -19 49 17 -19 23 48 -19 57 3 0.31 -163 0 0 -19 47 33 4 55 54.1 4 96 -2 -19 38 40 -19 56 25 -19 30 56 -20 4 11 0.31 -162 0 0 -19 54 40 4 55 53.4 5 95 -3 -19 45 47 -20 3 33 -19 38 3 -20 11 18 0.32 -161 0 0 -20 1 46 4 55 52.5 6 95 -4 -19 52 53 -20 10 39 -19 45 9 -20 18 24 0.32 -160 0 0 -20 8 51 4 55 51.5 7 95 -5 -19 59 58 -20 17 43 -19 52 14 -20 25 29 0.33 -159 0 0 -20 15 54 4 55 50.3 8 94 -5 -20 7 2 -20 24 47 -19 59 17 -20 32 32 0.33 -158 0 0 -20 22 56 4 55 49.0 9 94 -6 -20 14 4 -20 31 49 -20 6 19 -20 39 34 0.33 -157 0 0 -20 29 56 4 55 47.5 10 94 -7 -20 21 4 -20 38 49 -20 13 20 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270 -13 -21 13 58 -21 31 43 -21 6 14 -21 39 28 0.35 2 0 0 -21 16 8 4 39 37.2 18 270 -12 -21 7 16 -21 25 0 -20 59 32 -21 32 45 0.35 3 0 0 -21 9 22 4 39 34.4 18 269 -11 -21 0 30 -21 18 15 -20 52 46 -21 26 0 0.35 4 0 0 -21 2 34 4 39 31.7 17 269 -10 -20 53 42 -21 11 27 -20 45 58 -21 19 12 0.36 5 0 0 -20 55 44 4 39 29.1 16 269 -9 -20 46 52 -21 4 37 -20 39 8 -21 12 22 0.36 6 0 0 -20 48 52 4 39 26.7 15 268 -8 -20 40 0 -20 57 45 -20 32 16 -21 5 30 0.36 7 0 0 -20 41 58 4 39 24.4 14 268 -7 -20 33 5 -20 50 50 -20 25 21 -20 58 36 0.36 8 0 0 -20 35 1 4 39 22.3 13 267 -6 -20 26 9 -20 43 54 -20 18 25 -20 51 39 0.36 9 0 0 -20 28 3 4 39 20.3 12 267 -5 -20 19 11 -20 36 56 -20 11 27 -20 44 41 0.36 10 0 0 -20 21 3 4 39 18.5 11 267 -4 -20 12 11 -20 29 56 -20 4 27 -20 37 41 0.36 11 0 0 -20 14 2 4 39 16.8 10 266 -4 -20 5 9 -20 22 54 -19 57 25 -20 30 40 0.36 12 0 0 -20 6 59 4 39 15.2 9 266 -3 -19 58 6 -20 15 51 -19 50 22 -20 23 37 0.37 13 0 0 -19 59 54 4 39 13.8 8 266 -2 -19 51 2 -20 8 47 -19 43 17 -20 16 32 0.37 14 0 0 -19 52 49 4 39 12.6 7 265 -1 -19 43 56 -20 1 41 -19 36 12 -20 9 27 0.37 15 0 0 -19 45 42 4 39 11.5 6 265 0 -19 36 49 -19 54 35 -19 29 5 -20 2 20 0.38 16 0 0 -19 38 34 4 39 10.5 5 265 1 -19 29 42 -19 47 27 -19 21 57 -19 55 12 0.38 17 0 0 -19 31 26 4 39 9.7 4 264 2 -19 22 33 -19 40 18 -19 14 49 -19 48 4 0.39 18 0 0 -19 24 16 4 39 9.1 3 264 3 -19 15 24 -19 33 9 -19 7 40 -19 40 55 0.40 19 0 0 -19 17 6 4 39 8.6 3 264 4 -19 8 14 -19 25 59 -19 0 30 -19 33 45 0.43 20 0 0 -19 9 56 4 39 8.2 2 263 5 -19 1 4 -19 18 49 -18 53 19 -19 26 35 0.48 21 0 0 -19 2 46 4 39 8.0 1 263 6 -18 53 53 -19 11 38 -18 46 9 -19 19 24 0.68 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 416-001351 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 01 04 28.8008 DE: -06 54 48.883 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 01 04 28.8008 DE: -06 54 48.884 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 11.7 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (292) Ludovica asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.029 distance from Earth [AU]: 1.48290 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): 0.023", 0.005", 58.4° remarks: * orbital elements for (292)Ludovica : Mean anomaly = 39.3544057538 deg Arg. of pericenter = 287.1987840255 deg Long. of node = 43.4722890081 deg Inclination = 14.8871197926 deg Eccentricity = 0.0326516446 Semimajor axis = 2.5292951191 AU Perihelion dist = 2.4467094738 AU Mag: H = 9.94, G = 0.15 Epoch of elements : MJD 60591.19967284 TDT (2024 Oct 08.1997) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,2.57,2024,10,8,4.792161,0.000910,-0.327896,-6.748346,-0.018971,-0.000196,0.001268,0.000001,0.000001 -72.7604,-6.7786,104.99,-6.07,False UCAC4 416-001351,1.07466687,-6.9135786,11.99,11.65,11.47,0.0,0,,1.09584064,-6.7786301,1.77,1.57,0,0,0 292,Ludovica,13.19,30.727,1.4829,0,0,-2.686,-0.11,,1.4,0 0,39.3055,2024,10,8,287.1988,43.4723,14.8871,0.03265,2.52930,2.44671,9.94,5.0,0.15 1.436,0.0227,0.0047,58,0.0125,Known errors,1.41,0,-1,-1 20241008_001351,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org