IOTA/IOTA-ES occultation update for (5107) Laurenbacall / TYC 719-01038-1 event on 2024 Dec 14, 09:09 UT Visible from Summary ------- On 2024 Dec 14 UT, the 17.143 km diameter asteroid (5107) Laurenbacall will occult a 11.1 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 5.30 mag to 16.42 mag (the magnitude of the asteroid) for at most 1.440 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: 97 * date and approx. time of event: 2024 Dec 14, 09:01 - 2024 Dec 14, 09:18 * geocentric midpoint of event [JD]: 2460658.88181833 * magnitude of target star: 11.13 * magnitude drop [mag]: 5.30 * estimated maximum duration [s]: 1.440 * Moon: 98 % sunlit, 26° distance * Sun: 165° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.38 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.033, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.033", 0.004", 89°) * approx speed of asteroid's shadow [km/s]: 11.8690 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 719-01038-1 by 5107 Laurenbacall on 2024 Dec 14 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 140 0 0 -23 9 16 9 18 14.4 0 79 0 -23 4 14 -23 14 18 -23 0 26 -23 18 6 .... 141 0 0 -22 58 47 9 18 14.3 1 79 -1 -22 53 45 -23 3 49 -22 49 57 -23 7 37 0.19 142 0 0 -22 48 15 9 18 14.0 2 78 -2 -22 43 12 -22 53 17 -22 39 25 -22 57 5 0.26 143 0 0 -22 37 39 9 18 13.5 3 78 -3 -22 32 36 -22 42 41 -22 28 49 -22 46 29 0.29 144 0 0 -22 27 0 9 18 12.9 4 78 -4 -22 21 58 -22 32 3 -22 18 10 -22 35 50 0.31 145 0 0 -22 16 19 9 18 12.1 5 77 -5 -22 11 16 -22 21 21 -22 7 29 -22 25 9 0.32 146 0 0 -22 5 34 9 18 11.2 6 77 -6 -22 0 32 -22 10 37 -21 56 45 -22 14 25 0.33 147 0 0 -21 54 48 9 18 10.2 7 77 -7 -21 49 45 -21 59 50 -21 45 58 -22 3 38 0.33 148 0 0 -21 43 59 9 18 8.9 8 76 -7 -21 38 56 -21 49 2 -21 35 9 -21 52 49 0.34 149 0 0 -21 33 8 9 18 7.6 9 76 -8 -21 28 5 -21 38 11 -21 24 18 -21 41 58 0.34 150 0 0 -21 22 15 9 18 6.0 10 75 -9 -21 17 13 -21 27 18 -21 13 25 -21 31 6 0.34 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- 63 0 0 -12 54 34 9 1 55.3 19 285 -9 -12 49 34 -12 59 34 -12 45 49 -13 3 20 0.37 - 62 0 0 -13 2 53 9 1 52.2 18 285 -8 -12 57 53 -13 7 54 -12 54 8 -13 11 39 0.37 - 61 0 0 -13 11 21 9 1 49.3 17 285 -8 -13 6 21 -13 16 21 -13 2 35 -13 20 7 0.37 - 60 0 0 -13 19 56 9 1 46.5 16 284 -7 -13 14 56 -13 24 57 -13 11 10 -13 28 43 0.37 - 59 0 0 -13 28 39 9 1 43.8 15 284 -6 -13 23 39 -13 33 40 -13 19 53 -13 37 26 0.37 - 58 0 0 -13 37 30 9 1 41.4 14 284 -5 -13 32 30 -13 42 31 -13 28 44 -13 46 17 0.37 - 57 0 0 -13 46 28 9 1 39.0 13 284 -4 -13 41 28 -13 51 29 -13 37 42 -13 55 15 0.37 - 56 0 0 -13 55 34 9 1 36.9 12 283 -3 -13 50 33 -14 0 34 -13 46 47 -14 4 21 0.38 - 55 0 0 -14 4 46 9 1 34.9 11 283 -2 -13 59 45 -14 9 47 -13 55 59 -14 13 33 0.38 - 54 0 0 -14 14 5 9 1 33.0 10 283 -1 -14 9 5 -14 19 6 -14 5 18 -14 22 53 0.38 - 53 0 0 -14 23 32 9 1 31.4 9 283 0 -14 18 31 -14 28 33 -14 14 44 -14 32 19 0.38 - 52 0 0 -14 33 4 9 1 29.8 8 282 1 -14 28 3 -14 38 6 -14 24 17 -14 41 52 0.38 - 51 0 0 -14 42 44 9 1 28.5 8 282 2 -14 37 42 -14 47 45 -14 33 56 -14 51 32 0.38 - 50 0 0 -14 52 29 9 1 27.3 7 282 3 -14 47 28 -14 57 30 -14 43 41 -15 1 17 0.38 - 49 0 0 -15 2 21 9 1 26.3 6 282 4 -14 57 19 -15 7 22 -14 53 33 -15 11 9 0.39 - 48 0 0 -15 12 18 9 1 25.4 5 281 5 -15 7 16 -15 17 20 -15 3 30 -15 21 6 0.39 - 47 0 0 -15 22 21 9 1 24.7 4 281 6 -15 17 19 -15 27 23 -15 13 33 -15 31 10 0.40 - 46 0 0 -15 32 30 9 1 24.2 3 281 7 -15 27 28 -15 37 31 -15 23 41 -15 41 18 0.41 - 45 0 0 -15 42 43 9 1 23.8 2 281 8 -15 37 42 -15 47 45 -15 33 55 -15 51 32 0.43 - 44 0 0 -15 53 2 9 1 23.6 1 280 9 -15 48 1 -15 58 4 -15 44 14 -16 1 52 0.53 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 719-01038-1 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 52 10.7754 DE: +09 46 03.308 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 52 10.7755 DE: +09 46 03.307 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (5107) Laurenbacall asteroid class: approx. diameter [km]: 17 approx. diameter ["]: 0.012 distance from Earth [AU]: 1.91320 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#53 date of fit: 2023 Apr 27 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", 0.004", 89.325° remarks: * orbital elements for (5107)Laurenbacall : Mean anomaly = 358.9495169078 deg Arg. of pericenter = 268.8750454832 deg Long. of node = 178.5192840942 deg Inclination = 9.0463502900 deg Eccentricity = 0.0830199247 Semimajor axis = 3.1365253209 AU Perihelion dist = 2.8761312249 AU Mag: H = 12.30, G = 0.15 Epoch of elements : MJD 60658.38182050 TDT (2024 Dec 14.3818) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#532023Apr27,1.44,2024,12,14,9.163640,0.021563,-0.337998,-6.685559,-0.427128,-0.000576,0.001385,0.000001,0.000000 -132.5945,9.7744,41.25,-23.25,False TYC 719-01038-1,5.86965985,9.7675855,11.44,11.13,10.96,0.0,0,,5.89293321,9.7744381,5.30,5.02,0,0,0 5107,Laurenbacall,16.42,17.143,1.9132,0,0,-2.078,-1.96,,1.6,0 0,358.8818,2024,12,14,268.8750,178.5193,9.0464,0.08302,3.13653,2.87613,12.30,5.0,0.15 1.376,0.0330,0.0043,89,0.0047,Known errors,0.94,0,-1,-1 20241214_1038-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org