IOTA/IOTA-ES occultation update for (1597) Laugier / TYC 733-02092-1 event on 2024 Dec 29, 21:40 UT Visible from Summary ------- On 2024 Dec 29 UT, the 13.327 km diameter asteroid (1597) Laugier will occult a 11.9 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 4.11 mag to 16.02 mag (the magnitude of the asteroid) for at most 0.990 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: 92 * date and approx. time of event: 2024 Dec 29, 21:32 - 2024 Dec 29, 21:47 * geocentric midpoint of event [JD]: 2460674.40277841 * magnitude of target star: 11.94 * magnitude drop [mag]: 4.11 * estimated maximum duration [s]: 0.990 * Moon: 1 % sunlit, 156° distance * Sun: 165° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.49 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.003", 88°) * approx speed of asteroid's shadow [km/s]: 13.4318 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 733-02092-1 by 1597 Laugier on 2024 Dec 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 - 60 0 0 17 40 23 21 47 50.9 0 82 -4 17 44 4 .. .. .. 17 47 38 .. .. .. .... - 59 0 0 17 48 37 21 47 50.8 1 82 -5 17 52 18 17 44 57 17 55 52 17 41 22 -0.12 - 58 0 0 17 56 40 21 47 50.6 2 82 -5 18 0 21 17 53 0 18 3 55 17 49 25 -0.12 - 57 0 0 18 4 31 21 47 50.3 3 83 -6 18 8 12 18 0 51 18 11 46 17 57 17 -0.12 - 56 0 0 18 12 10 21 47 49.8 4 83 -7 18 15 51 18 8 30 18 19 25 18 4 56 -0.12 - 55 0 0 18 19 37 21 47 49.2 5 83 -8 18 23 18 18 15 57 18 26 52 18 12 23 -0.12 - 54 0 0 18 26 53 21 47 48.4 6 84 -9 18 30 33 18 23 12 18 34 7 18 19 39 -0.12 - 53 0 0 18 33 56 21 47 47.6 7 84 -10 18 37 36 18 30 16 18 41 9 18 26 42 -0.12 - 52 0 0 18 40 46 21 47 46.6 8 84 -11 18 44 26 18 37 6 18 48 0 18 33 33 -0.12 - 51 0 0 18 47 25 21 47 45.5 9 85 -12 18 51 5 18 43 45 18 54 38 18 40 12 -0.12 - 50 0 0 18 53 51 21 47 44.2 10 85 -13 18 57 31 18 50 11 19 1 5 18 46 38 -0.12 - 49 0 0 19 0 5 21 47 42.8 10 85 -14 19 3 45 18 56 25 19 7 18 18 52 52 -0.12 - 48 0 0 19 6 6 21 47 41.3 11 86 -15 19 9 46 19 2 27 19 13 19 18 58 53 -0.12 - 47 0 0 19 11 55 21 47 39.7 12 86 -16 19 15 35 19 8 16 19 19 8 19 4 42 -0.12 - 46 0 0 19 17 32 21 47 37.9 13 86 -17 19 21 11 19 13 52 19 24 44 19 10 19 -0.12 - 45 0 0 19 22 55 21 47 36.1 14 87 -17 19 26 35 19 19 16 19 30 8 19 15 43 -0.12 - 44 0 0 19 28 6 21 47 34.1 15 87 -18 19 31 46 19 24 27 19 35 19 19 20 54 -0.12 - 43 0 0 19 33 5 21 47 32.0 16 87 -19 19 36 44 19 29 25 19 40 17 19 25 53 -0.12 - 42 0 0 19 37 50 21 47 29.7 17 88 -20 19 41 30 19 34 11 19 45 3 19 30 38 -0.12 - 41 0 0 19 42 23 21 47 27.4 18 88 -21 19 46 2 19 38 44 19 49 35 19 35 11 -0.12 - 40 0 0 19 46 43 21 47 24.9 19 88 -22 19 50 22 19 43 4 19 53 55 19 39 32 -0.12 - 39 0 0 19 50 51 21 47 22.3 20 89 -23 19 54 30 19 47 12 19 58 2 19 43 39 -0.12 - 38 0 0 19 54 45 21 47 19.6 21 89 -24 19 58 24 19 51 6 20 1 57 19 47 33 -0.12 - 37 0 0 19 58 27 21 47 16.7 22 89 -25 20 2 5 19 54 48 20 5 38 19 51 15 -0.12 - 36 0 0 20 1 55 21 47 13.8 23 90 -26 20 5 34 19 58 16 20 9 7 19 54 44 -0.13 - 35 0 0 20 5 11 21 47 10.7 24 90 -27 20 8 50 20 1 32 20 12 22 19 58 0 -0.13 - 34 0 0 20 8 14 21 47 7.6 25 90 -27 20 11 52 20 4 35 20 15 25 20 1 2 -0.13 - 33 0 0 20 11 3 21 47 4.3 25 91 -28 20 14 42 20 7 25 20 18 15 20 3 52 -0.13 - 32 0 0 20 13 40 21 47 0.9 26 91 -29 20 17 19 20 10 2 20 20 51 20 6 29 -0.13 - 31 0 0 20 16 4 21 46 57.4 27 91 -30 20 19 43 20 12 26 20 23 15 20 8 53 -0.13 - 30 0 0 20 18 15 21 46 53.8 28 92 -31 20 21 54 20 14 36 20 25 26 20 11 4 -0.13 - 29 0 0 20 20 13 21 46 50.1 29 92 -32 20 23 52 20 16 34 20 27 24 20 13 2 -0.13 - 28 0 0 20 21 58 21 46 46.3 30 93 -33 20 25 37 20 18 19 20 29 9 20 14 47 -0.13 - 27 0 0 20 23 30 21 46 42.4 31 93 -34 20 27 8 20 19 51 20 30 41 20 16 19 -0.13 - 26 0 0 20 24 49 21 46 38.4 32 93 -35 20 28 27 20 21 10 20 32 0 20 17 38 -0.13 - 25 0 0 20 25 55 21 46 34.2 33 94 -36 20 29 33 20 22 16 20 33 6 20 18 44 -0.13 - 24 0 0 20 26 48 21 46 30.0 34 94 -36 20 30 26 20 23 9 20 33 58 20 19 37 -0.13 - 23 0 0 20 27 28 21 46 25.7 35 95 -37 20 31 6 20 23 49 20 34 38 20 20 17 -0.13 - 22 0 0 20 27 55 21 46 21.3 36 95 -38 20 31 33 20 24 16 20 35 5 20 20 44 -0.13 - 21 0 0 20 28 9 21 46 16.7 36 95 -39 20 31 47 20 24 30 20 35 19 20 20 58 -0.13 - 20 0 0 20 28 10 21 46 12.1 37 96 -40 20 31 48 20 24 31 20 35 21 20 20 59 -0.13 - 19 0 0 20 27 58 21 46 7.4 38 96 -41 20 31 36 20 24 19 20 35 9 20 20 47 -0.13 - 18 0 0 20 27 33 21 46 2.6 39 97 -42 20 31 12 20 23 55 20 34 44 20 20 22 -0.13 - 17 0 0 20 26 56 21 45 57.7 40 97 -43 20 30 34 20 23 17 20 34 6 20 19 45 -0.13 - 16 0 0 20 26 5 21 45 52.7 41 97 -44 20 29 44 20 22 27 20 33 16 20 18 54 -0.13 - 15 0 0 20 25 2 21 45 47.6 42 98 -44 20 28 40 20 21 23 20 32 13 20 17 51 -0.13 - 14 0 0 20 23 46 21 45 42.5 43 98 -45 20 27 24 20 20 7 20 30 57 20 16 35 -0.13 - 13 0 0 20 22 17 21 45 37.2 44 99 -46 20 25 55 20 18 38 20 29 28 20 15 6 -0.13 - 12 0 0 20 20 35 21 45 31.8 45 99 -47 20 24 14 20 16 56 20 27 46 20 13 24 -0.13 - 11 0 0 20 18 41 21 45 26.4 46 100 -48 20 22 19 20 15 2 20 25 52 20 11 30 -0.13 - 10 0 0 20 16 34 21 45 20.9 47 100 -49 20 20 12 20 12 55 20 23 45 20 9 22 -0.13 - 9 0 0 20 14 14 21 45 15.3 47 101 -50 20 17 53 20 10 35 20 21 25 20 7 3 -0.13 - 8 0 0 20 11 41 21 45 9.6 48 101 -51 20 15 20 20 8 3 20 18 53 20 4 30 -0.13 - 7 0 0 20 8 56 21 45 3.8 49 102 -52 20 12 35 20 5 18 20 16 8 20 1 45 -0.13 - 6 0 0 20 5 59 21 44 58.0 50 102 -52 20 9 38 20 2 20 20 13 10 19 58 48 -0.13 - 5 0 0 20 2 49 21 44 52.0 51 103 -53 20 6 28 19 59 10 20 10 1 19 55 37 -0.13 - 4 0 0 19 59 26 21 44 46.0 52 103 -54 20 3 5 19 55 48 20 6 38 19 52 15 -0.13 - 3 0 0 19 55 52 21 44 40.0 53 104 -55 19 59 31 19 52 13 20 3 3 19 48 40 -0.13 - 2 0 0 19 52 4 21 44 33.8 54 104 -56 19 55 44 19 48 25 19 59 16 19 44 53 -0.13 - 1 0 0 19 48 5 21 44 27.6 55 105 -57 19 51 44 19 44 26 19 55 17 19 40 53 -0.13 0 0 0 19 43 53 21 44 21.3 56 105 -58 19 47 32 19 40 14 19 51 5 19 36 41 -0.13 1 0 0 19 39 29 21 44 14.9 56 106 -59 19 43 9 19 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Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.8 Data for the target star ------------------------ * name: TYC 733-02092-1 * constellation : Monoceros * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 31 49.0341 DE: +07 52 46.134 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 31 49.0341 DE: +07 52 46.134 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1597) Laugier asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.009 distance from Earth [AU]: 1.97690 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): 0.017", 0.003", 87.851° remarks: * orbital elements for (1597)Laugier : Mean anomaly = 254.0414915229 deg Arg. of pericenter = 54.6195481832 deg Long. of node = 158.3183913105 deg Inclination = 11.7892329027 deg Eccentricity = 0.0870986226 Semimajor axis = 2.8493713006 AU Perihelion dist = 2.6011949849 AU Mag: H = 11.78, G = 0.15 Epoch of elements : MJD 60673.90277921 TDT (2024 Dec 29.9028) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Feb11,0.99,2024,12,29,21.666682,0.023020,0.125430,-7.456683,1.368952,0.000105,0.001593,0.000002,0.000000 34.4668,7.8618,-144.39,-23.15,False TYC 733-02092-1,6.53028726,7.8794818,12.18,11.94,11.81,0.0,0,,6.55329548,7.8617899,4.11,3.80,0,0,0 1597,Laugier,16.02,13.327,1.9769,0,0,-2.232,6.09,,1.2,0 0,253.8565,2024,12,29,54.6195,158.3184,11.7892,0.08710,2.84937,2.60119,11.78,5.0,0.15 1.486,0.0170,0.0027,88,0.0045,Known errors,0.85,0,-1,-1 20241229_2092-1,60140.76 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 18:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org