IOTA/IOTA-ES occultation update for (888) Parysatis / UCAC4 504-032850 event on 2024 Dec 13, 06:40 UT Visible from Summary ------- On 2024 Dec 13 UT, the 45.33 km diameter asteroid (888) Parysatis will occult a 11.5 mag star in the constellation Monoceros for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.29 mag to 12.42 mag (the magnitude of the asteroid) for at most 5.470 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: 98 * date and approx. time of event: 2024 Dec 13, 06:28 - 2024 Dec 13, 06:53 * geocentric midpoint of event [JD]: 2460657.77837838 * magnitude of target star: 11.52 * magnitude drop [mag]: 1.29 * estimated maximum duration [s]: 5.470 * Moon: 94 % sunlit, 53° distance * Sun: 155° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 46 * 1 sigma uncertainty interval [path widths]: +/- 0.36 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.029, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.029", 0.004", 81°) * approx speed of asteroid's shadow [km/s]: 8.2827 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 504-032850 by 888 Parysatis on 2024 Dec 13 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 -175 0 0 16 5 22 6 53 28.7 0 79 -24 16 18 7 15 52 37 16 27 11 15 43 32 .... -174 0 0 16 16 25 6 53 28.6 1 79 -25 16 29 8 16 3 40 16 38 11 15 54 36 0.05 -173 0 0 16 26 57 6 53 28.2 2 80 -26 16 39 39 16 14 14 16 48 41 16 5 11 0.12 -172 0 0 16 36 59 6 53 27.6 3 80 -27 16 49 40 16 24 17 16 58 42 16 15 15 0.15 -171 0 0 16 46 32 6 53 26.8 4 80 -28 16 59 12 16 33 51 17 8 12 16 24 50 0.16 -170 0 0 16 55 35 6 53 25.7 5 80 -29 17 8 14 16 42 55 17 17 13 16 33 54 0.17 -169 0 0 17 4 8 6 53 24.5 6 81 -30 17 16 46 16 51 29 17 25 45 16 42 29 0.17 -168 0 0 17 12 11 6 53 23.0 7 81 -31 17 24 48 16 59 33 17 33 47 16 50 34 0.17 -167 0 0 17 19 45 6 53 21.3 8 81 -32 17 32 22 17 7 9 17 41 19 16 58 10 0.18 -166 0 0 17 26 50 6 53 19.4 9 82 -33 17 39 26 17 14 14 17 48 23 17 5 16 0.18 -165 0 0 17 33 26 6 53 17.3 10 82 -34 17 46 0 17 20 50 17 54 57 17 11 53 0.18 -164 0 0 17 39 32 6 53 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16 294 9 -31 52 0 -32 18 42 -31 42 30 -32 28 13 0.20 - 11 0 0 -32 24 8 6 28 41.2 15 293 10 -32 10 48 -32 37 27 -32 1 20 -32 46 57 0.20 - 10 0 0 -32 42 30 6 28 38.2 14 293 11 -32 29 13 -32 55 48 -32 19 46 -33 5 16 0.20 - 9 0 0 -33 0 28 6 28 35.4 13 292 12 -32 47 12 -33 13 44 -32 37 47 -33 23 10 0.20 - 8 0 0 -33 18 1 6 28 32.8 12 291 13 -33 4 47 -33 31 15 -32 55 23 -33 40 40 0.20 - 7 0 0 -33 35 9 6 28 30.4 11 291 14 -33 21 57 -33 48 21 -33 12 34 -33 57 45 0.20 - 6 0 0 -33 51 52 6 28 28.2 10 290 15 -33 38 42 -34 5 3 -33 29 20 -34 14 26 0.20 - 5 0 0 -34 8 11 6 28 26.2 9 290 15 -33 55 2 -34 21 20 -33 45 42 -34 30 41 0.20 - 4 0 0 -34 24 4 6 28 24.3 9 289 16 -34 10 58 -34 37 12 -34 1 38 -34 46 32 0.20 - 3 0 0 -34 39 33 6 28 22.7 8 289 17 -34 26 28 -34 52 39 -34 17 10 -35 1 58 0.20 - 2 0 0 -34 54 37 6 28 21.2 7 288 18 -34 41 34 -35 7 41 -34 32 17 -35 16 58 0.20 - 1 0 0 -35 9 16 6 28 19.9 6 288 19 -34 56 14 -35 22 18 -34 46 58 -35 31 34 0.20 0 0 0 -35 23 29 6 28 18.8 5 287 20 -35 10 30 -35 36 30 -35 1 15 -35 45 45 0.20 1 0 0 -35 37 18 6 28 17.8 4 286 21 -35 24 20 -35 50 17 -35 15 7 -35 59 31 0.20 2 0 0 -35 50 42 6 28 17.0 4 286 21 -35 37 46 -36 3 39 -35 28 33 -36 12 53 0.20 3 0 0 -36 3 41 6 28 16.4 3 285 22 -35 50 46 -36 16 37 -35 41 35 -36 25 49 0.20 4 0 0 -36 16 15 6 28 16.0 2 285 23 -36 3 22 -36 29 9 -35 54 12 -36 38 20 0.20 5 0 0 -36 28 24 6 28 15.7 1 284 24 -36 15 32 -36 41 17 -36 6 23 -36 50 27 0.20 6 0 0 -36 40 8 6 28 15.6 0 283 25 -36 27 18 -36 53 0 -36 18 10 -37 2 8 0.21 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 504-032850 * constellation : Monoceros * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 53 38.1072 DE: +10 41 01.747 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 53 38.1072 DE: +10 41 01.747 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.5 * B mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (888) Parysatis asteroid class: approx. diameter [km]: 45 approx. diameter ["]: 0.048 distance from Earth [AU]: 1.30090 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.029", 0.004", 81.406° remarks: * orbital elements for (888)Parysatis : Mean anomaly = 20.9974568328 deg Arg. of pericenter = 297.9127816342 deg Long. of node = 123.8976425338 deg Inclination = 13.8538594971 deg Eccentricity = 0.1957237771 Semimajor axis = 2.7089858426 AU Perihelion dist = 2.1787729013 AU Mag: H = 9.44, G = 0.15 Epoch of elements : MJD 60657.27837995 TDT (2024 Dec 13.2784) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,5.47,2024,12,13,6.681081,-0.082154,-0.162849,-4.174333,2.104807,-0.001991,0.001298,0.000001,0.000000 -78.9034,10.6535,78.36,-23.18,False UCAC4 504-032850,6.89391865,10.6838188,11.96,11.52,11.28,0.0,0,,6.91727178,10.6534638,1.29,1.15,0,0,0 888,Parysatis,12.42,45.330,1.3009,0,0,-1.914,14.23,,2.2,0 0,20.9359,2024,12,13,297.9128,123.8976,13.8539,0.19572,2.70899,2.17877,9.43,5.0,0.15 1.356,0.0290,0.0040,81,0.0171,Known errors,1.20,0,-1,-1 20241213_032850,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org