IOTA/IOTA-ES occultation update for (565) Marbachia / TYC 5188-00124-1 event on 2024 Oct 29, 10:53 UT Visible from Summary ------- On 2024 Oct 29 UT, the 27.549 km diameter asteroid (565) Marbachia will occult a 11.1 mag star in the constellation Aquila for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.01 mag to 16.12 mag (the magnitude of the asteroid) for at most 1.740 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 Oct 29, 10:46 - 2024 Oct 29, 11:00 * geocentric midpoint of event [JD]: 2460612.95390162 * magnitude of target star: 11.12 * magnitude drop [mag]: 5.01 * estimated maximum duration [s]: 1.740 * Moon: 8 % sunlit, 125° distance * Sun: 93° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 28 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 73°) * approx speed of asteroid's shadow [km/s]: 15.7991 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5188-00124-1 by 565 Marbachia on 2024 Oct 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 18 0 0 - 7 47 24 10 47 5.1 0 97 83 - 7 55 10 - 7 39 38 - 7 59 48 - 7 35 0 .... 19 0 0 - 7 54 37 10 47 5.2 1 97 82 - 8 2 23 - 7 46 52 - 8 7 2 - 7 42 13 0.19 20 0 0 - 8 1 58 10 47 5.5 2 96 82 - 8 9 44 - 7 54 12 - 8 14 23 - 7 49 34 0.22 21 0 0 - 8 9 26 10 47 5.8 3 96 81 - 8 17 12 - 8 1 40 - 8 21 51 - 7 57 1 0.23 22 0 0 - 8 17 1 10 47 6.3 4 96 81 - 8 24 47 - 8 9 14 - 8 29 26 - 8 4 36 0.23 23 0 0 - 8 24 42 10 47 6.9 5 96 80 - 8 32 28 - 8 16 56 - 8 37 8 - 8 12 17 0.24 24 0 0 - 8 32 30 10 47 7.7 6 96 79 - 8 40 16 - 8 24 44 - 8 44 56 - 8 20 5 0.24 25 0 0 - 8 40 24 10 47 8.6 7 96 78 - 8 48 11 - 8 32 38 - 8 52 50 - 8 27 59 0.24 26 0 0 - 8 48 25 10 47 9.6 8 96 77 - 8 56 12 - 8 40 39 - 9 0 51 - 8 36 0 0.24 27 0 0 - 8 56 32 10 47 10.7 9 95 76 - 9 4 19 - 8 48 45 - 9 8 58 - 8 44 6 0.24 28 0 0 - 9 4 45 10 47 11.9 10 95 76 - 9 12 32 - 8 56 58 - 9 17 11 - 8 52 19 0.24 29 0 0 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64 304 -18 -22 42 58 -22 27 33 -22 47 35 -22 22 57 0.25 129 0 0 -22 38 31 10 56 12.5 63 302 -19 -22 46 13 -22 30 49 -22 50 50 -22 26 12 0.25 130 0 0 -22 41 37 10 56 18.6 62 301 -19 -22 49 19 -22 33 55 -22 53 56 -22 29 18 0.25 131 0 0 -22 44 33 10 56 24.7 61 300 -20 -22 52 15 -22 36 51 -22 56 52 -22 32 15 0.25 132 0 0 -22 47 20 10 56 30.7 60 299 -21 -22 55 2 -22 39 38 -22 59 39 -22 35 2 0.25 133 0 0 -22 49 57 10 56 36.6 60 298 -22 -22 57 39 -22 42 15 -23 2 15 -22 37 39 0.25 134 0 0 -22 52 24 10 56 42.5 59 296 -23 -23 0 6 -22 44 42 -23 4 43 -22 40 6 0.25 135 0 0 -22 54 41 10 56 48.4 58 295 -24 -23 2 24 -22 47 0 -23 7 0 -22 42 24 0.25 136 0 0 -22 56 49 10 56 54.1 57 294 -24 -23 4 31 -22 49 8 -23 9 8 -22 44 31 0.25 137 0 0 -22 58 47 10 56 59.8 56 294 -25 -23 6 29 -22 51 6 -23 11 6 -22 46 29 0.25 138 0 0 -23 0 35 10 57 5.5 55 293 -26 -23 8 17 -22 52 54 -23 12 54 -22 48 18 0.25 139 0 0 -23 2 14 10 57 11.1 54 292 -27 -23 9 55 -22 54 32 -23 14 32 -22 49 56 0.25 140 0 0 -23 3 42 10 57 16.6 53 291 -28 -23 11 24 -22 56 1 -23 16 0 -22 51 25 0.25 141 0 0 -23 5 1 10 57 22.1 53 290 -28 -23 12 42 -22 57 19 -23 17 19 -22 52 43 0.25 142 0 0 -23 6 9 10 57 27.5 52 289 -29 -23 13 51 -22 58 28 -23 18 28 -22 53 52 0.25 143 0 0 -23 7 8 10 57 32.8 51 289 -30 -23 14 50 -22 59 27 -23 19 26 -22 54 51 0.25 144 0 0 -23 7 57 10 57 38.1 50 288 -31 -23 15 39 -23 0 16 -23 20 15 -22 55 40 0.25 145 0 0 -23 8 36 10 57 43.2 49 287 -32 -23 16 18 -23 0 55 -23 20 54 -22 56 19 0.25 146 0 0 -23 9 5 10 57 48.4 48 286 -32 -23 16 47 -23 1 24 -23 21 23 -22 56 48 0.25 147 0 0 -23 9 25 10 57 53.4 47 286 -33 -23 17 6 -23 1 43 -23 21 43 -22 57 7 0.25 148 0 0 -23 9 34 10 57 58.4 46 285 -34 -23 17 16 -23 1 53 -23 21 52 -22 57 17 0.25 149 0 0 -23 9 34 10 58 3.2 45 284 -35 -23 17 15 -23 1 52 -23 21 52 -22 57 16 0.25 150 0 0 -23 9 23 10 58 8.1 44 284 -35 -23 17 5 -23 1 42 -23 21 41 -22 57 6 0.25 151 0 0 -23 9 3 10 58 12.8 44 283 -36 -23 16 45 -23 1 22 -23 21 21 -22 56 46 0.25 152 0 0 -23 8 33 10 58 17.4 43 283 -37 -23 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23 -20 58 54 -21 19 1 -20 54 16 0.27 -171 0 0 -21 0 36 11 0 4.4 8 266 -55 -21 8 21 -20 52 52 -21 12 59 -20 48 14 0.27 -170 0 0 -20 54 27 11 0 5.3 7 266 -55 -21 2 12 -20 46 42 -21 6 50 -20 42 4 0.27 -169 0 0 -20 48 10 11 0 6.1 6 265 -56 -20 55 55 -20 40 25 -21 0 33 -20 35 47 0.28 -168 0 0 -20 41 45 11 0 6.8 5 265 -56 -20 49 31 -20 34 0 -20 54 9 -20 29 22 0.28 -167 0 0 -20 35 14 11 0 7.4 4 264 -56 -20 42 59 -20 27 29 -20 47 38 -20 22 51 0.29 -166 0 0 -20 28 35 11 0 7.9 4 264 -56 -20 36 21 -20 20 50 -20 40 59 -20 16 12 0.30 -165 0 0 -20 21 50 11 0 8.2 3 264 -56 -20 29 35 -20 14 4 -20 34 14 -20 9 26 0.32 -164 0 0 -20 14 57 11 0 8.5 2 263 -56 -20 22 43 -20 7 12 -20 27 22 -20 2 34 0.35 -163 0 0 -20 7 58 11 0 8.6 1 263 -56 -20 15 44 -20 0 13 -20 20 23 -19 55 34 0.50 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5188-00124-1 * constellation : Aquila * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 32 54.4586 DE: -06 48 24.517 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 32 54.4584 DE: -06 48 24.518 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 11.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (565) Marbachia asteroid class: approx. diameter [km]: 28 approx. diameter ["]: 0.015 distance from Earth [AU]: 2.52980 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.011", 0.002", 72.512° remarks: * orbital elements for (565)Marbachia : Mean anomaly = 169.9469195109 deg Arg. of pericenter = 292.1817616978 deg Long. of node = 225.6587422014 deg Inclination = 10.9939731779 deg Eccentricity = 0.1316436136 Semimajor axis = 2.4422063504 AU Perihelion dist = 2.1207054812 AU Mag: H = 10.87, G = 0.15 Epoch of elements : MJD 60612.45390133 TDT (2024 Oct 29.4539) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,1.74,2024,10,29,10.893639,-0.025488,-0.238983,8.865996,-0.956847,0.005665,0.001422,0.000000,0.000000 106.8878,-6.7220,12.52,-13.69,False TYC 5188-00124-1,20.54846073,-6.8068102,11.34,11.12,11.00,0.0,0,,20.57047865,-6.7220382,5.01,4.69,0,0,0 565,Marbachia,16.12,27.549,2.5298,0,0,2.069,-3.32,,1.4,0 0,169.8297,2024,10,29,292.1818,225.6587,10.9940,0.13164,2.44221,2.12071,10.87,5.0,0.15 1.299,0.0107,0.0015,73,0.0045,Known errors,0.91,0,-1,-1 20241029_0124-1,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:59 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org