IOTA/IOTA-ES occultation update for (564) Dudu / TYC 6914-01727-1 event on 2024 Apr 01, 10:24 UT Visible from Summary ------- On 2024 Apr 01 UT, the 51.7336649648662 km diameter asteroid (564) Dudu will occult a 11.3 mag star in the constellation Capricornus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.45 mag to 14.69 mag (the magnitude of the asteroid) for at most 1.600 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 Apr 01, 10:21 - 2024 Apr 01, 10:27 * geocentric midpoint of event [JD]: 2460401.93378438 * magnitude of target star: 11.29 * magnitude drop [mag]: 3.45 * estimated maximum duration [s]: 1.600 * Moon: 58 % sunlit, 29° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 54 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.018, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.002", 91°) * approx speed of asteroid's shadow [km/s]: 32.3804 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6914-01727-1 by 564 Dudu on 2024 Apr 1 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 -122 0 0 16 18 12 10 21 29.5 0 118 -52 16 1 45 16 34 41 16 0 11 16 36 15 .... -121 0 0 15 48 2 10 21 29.5 1 118 -51 15 31 35 16 4 30 15 30 1 16 6 4 -0.02 -120 0 0 15 17 50 10 21 29.7 2 118 -50 15 1 23 15 34 18 14 59 49 15 35 52 -0.14 -119 0 0 14 47 36 10 21 29.9 3 118 -50 14 31 10 15 4 4 14 29 36 15 5 38 -0.19 -118 0 0 14 17 22 10 21 30.1 5 119 -49 14 0 56 14 33 49 13 59 22 14 35 23 -0.21 -117 0 0 13 47 8 10 21 30.5 6 119 -48 13 30 43 14 3 35 13 29 9 14 5 9 -0.22 -116 0 0 13 16 56 10 21 30.9 7 119 -48 13 0 31 13 33 22 12 58 58 13 34 56 -0.23 -115 0 0 12 46 46 10 21 31.4 8 119 -47 12 30 22 13 3 11 12 28 48 13 4 45 -0.24 -114 0 0 12 16 38 10 21 31.9 9 119 -46 12 0 15 12 33 3 11 58 42 12 34 37 -0.24 -113 0 0 11 46 35 10 21 32.6 10 120 -46 11 30 12 12 2 59 11 28 39 12 4 32 -0.25 -112 0 0 11 16 36 10 21 33.3 11 120 -45 11 0 15 11 32 59 10 58 42 11 34 33 -0.25 -111 0 0 10 46 43 10 21 34.1 12 120 -44 10 30 23 11 3 5 10 28 50 11 4 39 -0.25 -110 0 0 10 16 57 10 21 35.0 13 120 -43 10 0 37 10 33 17 9 59 4 10 34 51 -0.26 -109 0 0 9 47 17 10 21 35.9 14 121 -42 9 30 59 10 3 37 9 29 26 10 5 10 -0.26 -108 0 0 9 17 46 10 21 36.9 15 121 -42 9 1 29 9 34 5 8 59 56 9 35 38 -0.26 -107 0 0 8 48 23 10 21 38.0 17 121 -41 8 32 8 9 4 41 8 30 35 9 6 14 -0.26 -106 0 0 8 19 11 10 21 39.2 18 121 -40 8 2 56 8 35 27 8 1 24 8 37 0 -0.26 -105 0 0 7 50 9 10 21 40.4 19 121 -39 7 33 55 8 6 23 7 32 23 8 7 56 -0.26 -104 0 0 7 21 18 10 21 41.7 20 121 -38 7 5 6 7 37 31 7 3 34 7 39 4 -0.26 -103 0 0 6 52 39 10 21 43.1 21 122 -37 6 36 29 7 8 51 6 34 57 7 10 23 -0.26 -102 0 0 6 24 13 10 21 44.5 22 122 -36 6 8 4 6 40 24 6 6 32 6 41 56 -0.27 -101 0 0 5 56 1 10 21 46.0 23 122 -36 5 39 54 6 12 10 5 38 22 6 13 42 -0.27 -100 0 0 5 28 3 10 21 47.6 24 122 -35 5 11 57 5 44 10 5 10 26 5 45 42 -0.27 - 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Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: TYC 6914-01727-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 19 23.6201 DE: -26 21 55.825 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 19 23.6201 DE: -26 21 55.825 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.3 * B mag [mag]: 12.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (564) Dudu asteroid class: approx. diameter [km]: 52 approx. diameter ["]: 0.034 distance from Earth [AU]: 2.08660 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#63 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): 0.018", 0.002", 91.1° remarks: * orbital elements for (564)Dudu : Mean anomaly = 353.4308869463 deg Arg. of pericenter = 214.9016409876 deg Long. of node = 70.7352704091 deg Inclination = 17.9836845311 deg Eccentricity = 0.2762867910 Semimajor axis = 2.7476425616 AU Perihelion dist = 1.9885052154 AU Mag: H = 10.34, G = 0.15 Epoch of elements : MJD 60401.43378412 TDT (2024 Apr 01.4338) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#632023Apr24,1.60,2024,4,1,10.410825,0.011480,0.273471,18.261402,-0.740140,-0.004788,-0.001341,-0.000001,0.000000 -41.2245,-26.2903,24.77,4.82,False TYC 6914-01727-1,20.32322776,-26.3655071,12.00,11.29,10.91,0.1,4,,20.34738096,-26.2902764,3.45,3.38,0,0,0 564,Dudu,14.69,51.885,2.0866,0,0,5.724,-3.11,,2.8,0 0,353.3370,2024,4,1,214.9016,70.7353,17.9837,0.27629,2.74764,1.98851,10.34,5.0,0.15 1.048,0.0183,0.0016,91,0.0016,Known errors,0.83,0,-1,-1 20240401_1727-1,60139.27 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 06:26 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org