IOTA/IOTA-ES occultation update for (1597) Laugier / TYC 739-02463-1 event on 2024 Sep 07, 09:26 UT Visible from Summary ------- On 2024 Sep 07 UT, the 13.191130005364 km diameter asteroid (1597) Laugier will occult a 9.0 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.67 mag to 17.66 mag (the magnitude of the asteroid) for at most 0.510 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: 93 * date and approx. time of event: 2024 Sep 07, 09:23 - 2024 Sep 07, 09:30 * geocentric midpoint of event [JD]: 2460560.89357067 * magnitude of target star: 8.99 * magnitude drop [mag]: 8.67 * estimated maximum duration [s]: 0.510 * Moon: 16 % sunlit, 116° distance * Sun: 70° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.47 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.010", 0.001", 86°) * approx speed of asteroid's shadow [km/s]: 26.1808 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 739-02463-1 by 1597 Laugier on 2024 Sep 7 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 -117 0 0 -21 54 49 9 23 20.4 0 77 -61 -21 59 17 -21 50 22 -22 3 30 -21 46 10 .... -116 0 0 -21 41 39 9 23 20.4 1 76 -61 -21 46 6 -21 37 13 -21 50 19 -21 33 0 0.25 -115 0 0 -21 28 44 9 23 20.5 2 76 -60 -21 33 10 -21 24 17 -21 37 23 -21 20 5 0.44 -114 0 0 -21 16 2 9 23 20.7 3 76 -59 -21 20 28 -21 11 36 -21 24 41 -21 7 24 0.51 -113 0 0 -21 3 35 9 23 21.0 4 75 -59 -21 8 1 -20 59 9 -21 12 14 -20 54 58 0.54 -112 0 0 -20 51 23 9 23 21.4 5 75 -58 -20 55 49 -20 46 58 -21 0 1 -20 42 46 0.56 -111 0 0 -20 39 27 9 23 21.8 6 74 -57 -20 43 53 -20 35 2 -20 48 4 -20 30 50 0.58 -110 0 0 -20 27 46 9 23 22.4 7 74 -56 -20 32 11 -20 23 21 -20 36 23 -20 19 10 0.59 -109 0 0 -20 16 21 9 23 23.0 8 74 -55 -20 20 46 -20 11 56 -20 24 57 -20 7 45 0.59 -108 0 0 -20 5 12 9 23 23.7 9 73 -55 -20 9 37 -20 0 47 -20 13 48 -19 56 36 0.60 -107 0 0 -19 54 19 9 23 24.4 10 73 -54 -19 58 44 -19 49 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30 1.9 13 297 45 -38 41 20 -38 32 11 -38 45 40 -38 27 52 0.65 30 0 0 -38 52 52 9 30 2.8 12 296 45 -38 57 26 -38 48 18 -39 1 46 -38 43 59 0.65 31 0 0 -39 8 50 9 30 3.6 11 296 45 -39 13 24 -39 4 17 -39 17 44 -38 59 57 0.66 32 0 0 -39 24 39 9 30 4.4 10 295 45 -39 29 13 -39 20 6 -39 33 33 -39 15 47 0.66 33 0 0 -39 40 19 9 30 5.1 9 295 44 -39 44 53 -39 35 45 -39 49 12 -39 31 27 0.66 34 0 0 -39 55 49 9 30 5.7 8 294 44 -40 0 22 -39 51 16 -40 4 42 -39 46 57 0.66 35 0 0 -40 11 9 9 30 6.3 8 293 44 -40 15 42 -40 6 36 -40 20 1 -40 2 17 0.66 36 0 0 -40 26 19 9 30 6.8 7 293 44 -40 30 52 -40 21 46 -40 35 11 -40 17 28 0.66 37 0 0 -40 41 18 9 30 7.2 6 292 44 -40 45 51 -40 36 46 -40 50 10 -40 32 28 0.67 38 0 0 -40 56 8 9 30 7.6 5 291 43 -41 0 40 -40 51 35 -41 4 59 -40 47 17 0.67 39 0 0 -41 10 46 9 30 8.0 4 291 43 -41 15 18 -41 6 14 -41 19 37 -41 1 56 0.67 40 0 0 -41 25 13 9 30 8.2 4 290 43 -41 29 46 -41 20 41 -41 34 4 -41 16 24 0.68 41 0 0 -41 39 30 9 30 8.5 3 289 43 -41 44 2 -41 34 58 -41 48 19 -41 30 41 0.69 42 0 0 -41 53 35 9 30 8.6 2 289 42 -41 58 7 -41 49 3 -42 2 24 -41 44 46 0.71 43 0 0 -42 7 28 9 30 8.7 1 288 42 -42 12 0 -42 2 57 -42 16 17 -41 58 41 0.75 44 0 0 -42 21 11 9 30 8.8 1 287 42 -42 25 42 -42 16 40 -42 29 59 -42 12 23 0.90 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: TYC 739-02463-1 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 21 20.4149 DE: +12 23 00.732 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 21 20.4152 DE: +12 23 00.732 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.0 * B mag [mag]: 9.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1597) Laugier asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.21080 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2023 Feb 11 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): 0.010", 0.001", 86.176° remarks: * orbital elements for (1597)Laugier : Mean anomaly = 231.1788390700 deg Arg. of pericenter = 54.2103647981 deg Long. of node = 158.3734495649 deg Inclination = 11.7856569687 deg Eccentricity = 0.0870920579 Semimajor axis = 2.8506794698 AU Perihelion dist = 2.6024079285 AU Mag: H = 11.78, G = 0.15 Epoch of elements : MJD 60560.39356971 TDT (2024 Sep 07.3936) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Feb11,0.51,2024,9,7,9.445696,-0.100810,-0.533989,14.525391,-2.716152,-0.005392,-0.000159,-0.000001,0.000000 -32.9584,12.3741,37.79,5.81,False TYC 739-02463-1,6.35567078,12.3835366,9.04,8.99,8.96,0.1,0,,6.37859679,12.3740987,8.67,8.24,0,0,0 1597,Laugier,17.66,13.424,3.2108,0,0,2.716,-7.44,,1.2,0 0,231.0982,2024,9,7,54.2104,158.3734,11.7857,0.08709,2.85068,2.60241,11.78,5.0,0.15 1.474,0.0100,0.0011,86,0.0027,Known errors,1.18,0,-1,-1 20240907_2463-1,60140.55 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org