IOTA/IOTA-ES occultation update for (1264) Letaba / TYC 5414-00850-1 event on 2024 Jan 15, 18:37 UT Visible from Summary ------- On 2024 Jan 15 UT, the 70.447 km diameter asteroid (1264) Letaba will occult a 10.7 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 4.04 mag to 14.66 mag (the magnitude of the asteroid) for at most 4.540 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 Jan 15, 18:30 - 2024 Jan 15, 18:44 * geocentric midpoint of event [JD]: 2460325.27571458 * magnitude of target star: 10.65 * magnitude drop [mag]: 4.04 * estimated maximum duration [s]: 4.540 * Moon: 24 % sunlit, 119° distance * Sun: 148° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 71 * 1 sigma uncertainty interval [path widths]: +/- 0.20 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.004", 115°) * approx speed of asteroid's shadow [km/s]: 15.5055 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5414-00850-1 by 1264 Letaba on 2024 Jan 15 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 - 10 0 0 - 1 23 34 18 43 52.4 0 101 2 - 1 4 4 - 1 43 5 - 0 56 18 - 1 50 50 .... - 9 0 0 - 1 35 15 18 43 52.3 1 101 1 - 1 15 44 - 1 54 44 - 1 7 59 - 2 2 29 0.01 - 8 0 0 - 1 46 49 18 43 52.1 2 101 0 - 1 27 19 - 2 6 18 - 1 19 34 - 2 14 3 -0.02 - 7 0 0 - 1 58 17 18 43 51.7 3 101 -1 - 1 38 47 - 2 17 46 - 1 31 2 - 2 25 30 -0.03 - 6 0 0 - 2 9 38 18 43 51.2 4 101 -2 - 1 50 9 - 2 29 7 - 1 42 24 - 2 36 51 -0.04 - 5 0 0 - 2 20 53 18 43 50.6 5 101 -3 - 2 1 24 - 2 40 21 - 1 53 39 - 2 48 5 -0.04 - 4 0 0 - 2 32 1 18 43 49.8 6 101 -3 - 2 12 32 - 2 51 28 - 2 4 48 - 2 59 13 -0.05 - 3 0 0 - 2 43 1 18 43 49.0 7 101 -4 - 2 23 33 - 3 2 29 - 2 15 49 - 3 10 13 -0.05 - 2 0 0 - 2 53 55 18 43 47.9 8 101 -5 - 2 34 27 - 3 13 22 - 2 26 43 - 3 21 6 -0.05 - 1 0 0 - 3 4 41 18 43 46.8 9 101 -6 - 2 45 14 - 3 24 8 - 2 37 30 - 3 31 51 -0.05 - 0 0 0 - 3 15 19 18 43 45.6 10 101 -7 - 2 55 53 - 3 34 46 - 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1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.015", 0.004", 114.779° remarks: * orbital elements for (1264)Letaba : Mean anomaly = 225.0273773560 deg Arg. of pericenter = 31.3389609012 deg Long. of node = 234.9484049870 deg Inclination = 24.9750945001 deg Eccentricity = 0.1569077948 Semimajor axis = 2.8628292649 AU Perihelion dist = 2.4136290380 AU Mag: H = 9.66, G = 0.15 Epoch of elements : MJD 60324.77571466 TDT (2024 Jan 15.7757) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#642023Apr24,4.54,2024,1,15,18.617150,-0.004577,0.056919,-8.723323,-0.704791,0.000174,0.003222,0.000002,0.000000 81.6374,-11.0093,-96.92,-21.11,False TYC 5414-00850-1,7.68804740,-10.9531325,10.77,10.65,10.59,0.0,0,,7.70731945,-11.0092687,4.03,3.66,0,0,0 1264,Letaba,14.66,70.447,2.3345,0,0,-2.232,-2.65,,3.6,0 0,224.8695,2024,1,15,31.3390,234.9484,24.9751,0.15691,2.86283,2.41363,9.66,5.0,0.15 1.199,0.0150,0.0043,115,0.0083,Known errors,1.17,0,-1,-1 20240115_0850-1,60137.02 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org