IOTA/IOTA-ES occultation update for (547) Praxedis / UCAC4 483-002038 event on 2024 Oct 04, 06:28 UT Visible from Summary ------- On 2024 Oct 04 UT, the 63.134 km diameter asteroid (547) Praxedis will occult a 11.3 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.25 mag to 12.16 mag (the magnitude of the asteroid) for at most 6.200 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 Oct 04, 06:18 - 2024 Oct 04, 06:39 * geocentric midpoint of event [JD]: 2460587.76998179 * magnitude of target star: 11.33 * magnitude drop [mag]: 1.25 * estimated maximum duration [s]: 6.200 * Moon: 2 % sunlit, 173° distance * Sun: 169° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 65 * 1 sigma uncertainty interval [path widths]: +/- 0.37 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.033, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.033", 0.005", 84°) * approx speed of asteroid's shadow [km/s]: 10.1876 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 483-002038 by 547 Praxedis on 2024 Oct 4 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 -174 0 0 -49 22 28 6 38 55.0 0 80 -8 -49 4 43 -49 40 12 -48 51 42 -49 53 10 .... -173 0 0 -49 14 57 6 38 54.9 1 79 -9 -48 57 9 -49 32 44 -48 44 6 -49 45 45 -0.19 -172 0 0 -49 6 46 6 38 54.8 1 78 -10 -48 48 55 -49 24 37 -48 35 49 -49 37 40 -0.21 -171 0 0 -48 57 55 6 38 54.5 2 77 -10 -48 40 0 -49 15 49 -48 26 51 -49 28 55 -0.21 -170 0 0 -48 48 23 6 38 54.2 3 77 -11 -48 30 23 -49 6 21 -48 17 12 -49 19 30 -0.22 -169 0 0 -48 38 9 6 38 53.8 4 76 -12 -48 20 5 -48 56 11 -48 6 51 -49 9 23 -0.22 -168 0 0 -48 27 13 6 38 53.3 4 75 -12 -48 9 4 -48 45 20 -47 55 46 -48 58 35 -0.22 -167 0 0 -48 15 33 6 38 52.7 5 74 -13 -47 57 20 -48 33 45 -47 43 59 -48 47 4 -0.22 -166 0 0 -48 3 10 6 38 51.9 6 74 -14 -47 44 52 -48 21 27 -47 31 27 -48 34 50 -0.22 -165 0 0 -47 50 3 6 38 51.1 6 73 -15 -47 31 39 -48 8 25 -47 18 9 -48 21 52 -0.22 -164 0 0 -47 36 10 6 38 50.2 7 72 -15 -47 17 40 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6 18 40.4 4 280 0 76 12 19 75 36 48 76 25 21 75 23 49 -0.25 13 0 0 75 51 31 6 18 40.2 4 281 1 76 9 21 75 33 43 76 22 25 75 20 41 -0.25 14 0 0 75 48 14 6 18 40.0 4 282 1 76 6 8 75 30 22 76 19 15 75 17 18 -0.25 15 0 0 75 44 42 6 18 39.8 3 283 1 76 2 39 75 26 45 76 15 49 75 13 38 -0.25 16 0 0 75 40 53 6 18 39.7 3 284 1 75 58 55 75 22 52 76 12 8 75 9 42 -0.26 17 0 0 75 36 48 6 18 39.5 3 285 2 75 54 55 75 18 43 76 8 12 75 5 29 -0.26 18 0 0 75 32 27 6 18 39.4 3 286 2 75 50 39 75 14 17 76 3 59 75 1 0 -0.26 19 0 0 75 27 49 6 18 39.2 2 287 2 75 46 6 75 9 34 75 59 30 74 56 12 -0.27 20 0 0 75 22 54 6 18 39.1 2 288 2 75 41 16 75 4 33 75 54 45 74 51 7 -0.27 21 0 0 75 17 41 6 18 39.0 2 289 3 75 36 9 74 59 14 75 49 42 74 45 44 -0.28 22 0 0 75 12 9 6 18 38.9 2 290 3 75 30 44 74 53 36 75 44 22 74 40 2 -0.29 23 0 0 75 6 20 6 18 38.8 1 291 3 75 25 1 74 47 40 75 38 43 74 34 1 -0.31 24 0 0 75 0 11 6 18 38.8 1 292 3 75 18 59 74 41 24 75 32 46 74 27 40 -0.33 25 0 0 74 53 42 6 18 38.7 1 293 4 75 12 38 74 34 48 75 26 31 74 20 58 -0.37 26 0 0 74 46 53 6 18 38.7 1 294 4 75 5 57 74 27 51 75 19 55 74 13 56 -0.45 27 0 0 74 39 43 6 18 38.6 0 295 4 74 58 55 74 20 33 75 12 59 74 6 32 -0.73 28 0 0 .. .. .... .. .. .. .. .. .. 74 51 32 .. .. .. 75 5 43 .. .. .. .... Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 483-002038 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 01 23 29.1898 DE: +06 29 54.109 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 01 23 29.1899 DE: +06 29 54.109 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.3 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (547) Praxedis asteroid class: approx. diameter [km]: 63 approx. diameter ["]: 0.076 distance from Earth [AU]: 1.13800 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): 0.033", 0.005", 84.037° remarks: * orbital elements for (547)Praxedis : Mean anomaly = 352.2997320423 deg Arg. of pericenter = 196.6859086305 deg Long. of node = 193.0514783660 deg Inclination = 16.8635214908 deg Eccentricity = 0.2359216546 Semimajor axis = 2.7731608339 AU Perihelion dist = 2.1189121415 AU Mag: H = 9.83, G = 0.15 Epoch of elements : MJD 60587.26998100 TDT (2024 Oct 04.2700) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,6.20,2024,10,4,6.479563,-0.201431,0.103609,-2.630142,-5.113417,-0.000987,-0.000181,0.000001,0.000001 -89.4371,6.6298,79.97,-4.56,False UCAC4 483-002038,1.39144162,6.4983635,11.87,11.33,11.04,0.0,0,,1.41325094,6.6298085,1.25,1.14,0,0,0 547,Praxedis,12.16,63.134,1.1380,0,0,-1.364,-39.52,,3.0,0 0,352.2421,2024,10,4,196.6859,193.0515,16.8635,0.23592,2.77316,2.11891,9.82,5.0,0.15 1.366,0.0333,0.0047,84,0.0280,Known errors,1.04,0,-1,-1 20241004_002038,60140.61 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:36 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org