IOTA/IOTA-ES occultation update for (2354) Lavrov / HIP 26183 event on 2024 Dec 08, 02:18 UT Visible from Summary ------- On 2024 Dec 08 UT, the 13.6693085361443 km diameter asteroid (2354) Lavrov will occult a 9.0 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.51 mag to 15.54 mag (the magnitude of the asteroid) for at most 1.200 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: 99 * date and approx. time of event: 2024 Dec 08, 02:08 - 2024 Dec 08, 02:27 * geocentric midpoint of event [JD]: 2460652.59593250 * magnitude of target star: 9.03 * magnitude drop [mag]: 6.51 * estimated maximum duration [s]: 1.200 * Moon: 43 % sunlit, 105° distance * Sun: 171° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.003", 87°) * approx speed of asteroid's shadow [km/s]: 11.4664 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 26183 by 2354 Lavrov on 2024 Dec 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 -122 0 0 6 41 0 2 27 14.9 0 72 -9 6 45 0 6 37 0 6 47 6 6 34 55 .... -121 0 0 7 0 51 2 27 14.8 1 72 -10 7 4 52 6 56 51 7 6 57 6 54 46 -0.20 -120 0 0 7 20 46 2 27 14.4 2 72 -11 7 24 46 7 16 46 7 26 52 7 14 40 -0.19 -119 0 0 7 40 44 2 27 13.9 3 72 -12 7 44 44 7 36 43 7 46 50 7 34 38 -0.18 -118 0 0 8 0 44 2 27 13.2 4 72 -13 8 4 44 7 56 44 8 6 50 7 54 38 -0.18 -117 0 0 8 20 47 2 27 12.3 5 72 -14 8 24 47 8 16 46 8 26 53 8 14 40 -0.18 -116 0 0 8 40 51 2 27 11.3 6 73 -15 8 44 51 8 36 50 8 46 57 8 34 45 -0.18 -115 0 0 9 0 56 2 27 10.0 8 73 -16 9 4 57 8 56 56 9 7 3 8 54 50 -0.18 -114 0 0 9 21 3 2 27 8.6 9 73 -17 9 25 3 9 17 2 9 27 9 9 14 57 -0.18 -113 0 0 9 41 10 2 27 7.0 10 73 -18 9 45 10 9 37 9 9 47 16 9 35 3 -0.18 -112 0 0 10 1 16 2 27 5.2 11 73 -19 10 5 17 9 57 16 10 7 23 9 55 10 -0.18 -111 0 0 10 21 23 2 27 3.2 12 73 -20 10 25 23 10 17 22 10 27 29 10 15 16 -0.18 -110 0 0 10 41 28 2 27 1.1 13 74 -21 10 45 29 10 37 27 10 47 35 10 35 22 -0.18 -109 0 0 11 1 32 2 26 58.7 14 74 -22 11 5 33 10 57 31 11 7 39 10 55 26 -0.18 -108 0 0 11 21 34 2 26 56.2 15 74 -23 11 25 35 11 17 34 11 27 41 11 15 28 -0.18 -107 0 0 11 41 34 2 26 53.6 16 74 -24 11 45 35 11 37 34 11 47 41 11 35 28 -0.18 -106 0 0 12 1 31 2 26 50.7 17 74 -25 12 5 32 11 57 31 12 7 38 11 55 25 -0.18 -105 0 0 12 21 26 2 26 47.7 18 75 -26 12 25 26 12 17 25 12 27 32 12 15 19 -0.18 -104 0 0 12 41 16 2 26 44.6 19 75 -27 12 45 17 12 37 16 12 47 23 12 35 10 -0.18 -103 0 0 13 1 3 2 26 41.3 20 75 -28 13 5 4 12 57 3 13 7 10 12 54 57 -0.18 -102 0 0 13 20 46 2 26 37.8 21 75 -29 13 24 46 13 16 46 13 26 52 13 14 40 -0.18 -101 0 0 13 40 24 2 26 34.1 22 76 -30 13 44 24 13 36 23 13 46 30 13 34 18 -0.18 -100 0 0 13 59 56 2 26 30.3 23 76 -31 14 3 57 13 55 56 14 6 2 13 53 51 -0.18 - 99 0 0 14 19 24 2 26 26.4 24 76 -32 14 23 24 14 15 24 14 25 30 14 13 18 -0.18 - 98 0 0 14 38 45 2 26 22.3 25 76 -33 14 42 45 14 34 45 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Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: HIP 26183 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 34 54.5317 DE: +18 07 20.904 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 34 54.5318 DE: +18 07 20.903 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.0 * B mag [mag]: 9.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2354) Lavrov asteroid class: Barbarian approx. diameter [km]: 14 approx. diameter ["]: 0.011 distance from Earth [AU]: 1.65030 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.020", 0.003", 87.014° remarks: * orbital elements for (2354)Lavrov : Mean anomaly = 62.8742951471 deg Arg. of pericenter = 190.9312283582 deg Long. of node = 175.9175946190 deg Inclination = 3.2682342947 deg Eccentricity = 0.1053361608 Semimajor axis = 2.7325833898 AU Perihelion dist = 2.4447435465 AU Mag: H = 12.02, G = 0.15 Epoch of elements : MJD 60652.09593263 TDT (2024 Dec 08.0959) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,1.20,2024,12,8,2.302380,-0.012635,0.185788,-6.457575,-0.431349,-0.000793,0.000496,0.000001,0.000000 -27.7765,18.1399,143.45,-22.75,False HIP 26183,5.58181437,18.1224734,9.29,9.03,8.89,0.1,0,,5.60649600,18.1398853,6.52,6.21,0,0,0 2354,Lavrov,15.54,13.789,1.6503,0,0,-2.414,-2.30,,1.2,0 0,62.8534,2024,12,8,190.9312,175.9176,3.2682,0.10534,2.73258,2.44474,12.02,5.0,0.15 1.262,0.0203,0.0030,87,0.0030,Known errors,1.03,0,-1,-1 20241208__26183,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:32 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org