IOTA/IOTA-ES occultation update for (46303) 2001 OZ44 / TYC 6284-00737-1 event on 2024 Oct 06, 18:56 UT Visible from Summary ------- On 2024 Oct 06 UT, the 11.1157045451575 km diameter asteroid (46303) 2001 OZ44 will occult a 11.1 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.93 mag to 19.06 mag (the magnitude of the asteroid) for at most 0.620 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 Oct 06, 18:50 - 2024 Oct 06, 19:02 * geocentric midpoint of event [JD]: 2460590.28929917 * magnitude of target star: 11.13 * magnitude drop [mag]: 7.93 * estimated maximum duration [s]: 0.620 * Moon: 13 % sunlit, 46° distance * Sun: 87° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.48 * 1 sigma uncertainty interval [seconds]: +/- 1.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.001", 72°) * approx speed of asteroid's shadow [km/s]: 18.2380 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6284-00737-1 by 46303 2001 OZ44 on 2024 Oct 6 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 -111 0 0 -14 35 40 18 50 47.9 0 108 80 -14 38 55 -14 32 25 -14 42 6 -14 29 14 .... -110 0 0 -14 55 4 18 50 48.0 1 108 80 -14 58 19 -14 51 49 -15 1 30 -14 48 39 0.16 -109 0 0 -15 14 17 18 50 48.2 2 108 80 -15 17 32 -15 11 2 -15 20 42 -15 7 53 0.14 -108 0 0 -15 33 19 18 50 48.5 3 108 80 -15 36 34 -15 30 4 -15 39 44 -15 26 54 0.13 -107 0 0 -15 52 9 18 50 48.9 4 107 80 -15 55 23 -15 48 54 -15 58 33 -15 45 45 0.13 -106 0 0 -16 10 46 18 50 49.4 5 107 79 -16 14 1 -16 7 32 -16 17 10 -16 4 23 0.13 -105 0 0 -16 29 11 18 50 50.1 6 107 79 -16 32 26 -16 25 57 -16 35 35 -16 22 48 0.12 -104 0 0 -16 47 23 18 50 50.8 7 107 79 -16 50 38 -16 44 9 -16 53 47 -16 41 0 0.12 -103 0 0 -17 5 22 18 50 51.7 8 106 78 -17 8 36 -17 2 8 -17 11 45 -16 59 0 0.12 -102 0 0 -17 23 8 18 50 52.7 9 106 78 -17 26 21 -17 19 54 -17 29 30 -17 16 45 0.12 -101 0 0 -17 40 39 18 50 53.7 10 106 77 -17 43 53 -17 37 26 -17 47 1 -17 34 17 0.12 -100 0 0 -17 57 57 18 50 54.9 11 105 76 -18 1 10 -17 54 43 -18 4 18 -17 51 35 0.12 - 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5 16 43 19 1 52.6 24 253 -63 - 5 20 1 - 5 13 26 - 5 23 13 - 5 10 13 0.12 48 0 0 - 4 54 33 19 1 55.2 23 253 -64 - 4 57 51 - 4 51 16 - 5 1 3 - 4 48 4 0.12 49 0 0 - 4 32 26 19 1 57.7 22 253 -65 - 4 35 43 - 4 29 8 - 4 38 55 - 4 25 56 0.12 50 0 0 - 4 10 20 19 2 0.1 21 252 -66 - 4 13 38 - 4 7 3 - 4 16 50 - 4 3 51 0.12 51 0 0 - 3 48 18 19 2 2.4 20 252 -68 - 3 51 35 - 3 45 1 - 3 54 48 - 3 41 49 0.13 52 0 0 - 3 26 19 19 2 4.6 19 252 -69 - 3 29 37 - 3 23 2 - 3 32 49 - 3 19 50 0.13 53 0 0 - 3 4 25 19 2 6.6 18 252 -70 - 3 7 42 - 3 1 8 - 3 10 54 - 2 57 56 0.13 54 0 0 - 2 42 35 19 2 8.5 17 252 -71 - 2 45 52 - 2 39 18 - 2 49 4 - 2 36 6 0.13 55 0 0 - 2 20 50 19 2 10.4 16 252 -72 - 2 24 7 - 2 17 33 - 2 27 19 - 2 14 22 0.13 56 0 0 - 1 59 11 19 2 12.1 14 252 -73 - 2 2 28 - 1 55 54 - 2 5 40 - 1 52 43 0.13 57 0 0 - 1 37 38 19 2 13.6 13 252 -74 - 1 40 55 - 1 34 21 - 1 44 7 - 1 31 10 0.13 58 0 0 - 1 16 12 19 2 15.1 12 252 -75 - 1 19 29 - 1 12 55 - 1 22 40 - 1 9 44 0.13 59 0 0 - 0 54 53 19 2 16.4 11 252 -76 - 0 58 9 - 0 51 36 - 1 1 21 - 0 48 25 0.13 60 0 0 - 0 33 41 19 2 17.6 10 252 -77 - 0 36 57 - 0 30 25 - 0 40 9 - 0 27 13 0.13 61 0 0 - 0 12 37 19 2 18.7 9 252 -78 - 0 15 54 - 0 9 21 - 0 19 5 - 0 6 10 0.14 62 0 0 0 8 18 19 2 19.7 8 252 -79 0 5 2 0 11 34 0 1 51 0 14 45 0.14 63 0 0 0 29 4 19 2 20.6 7 252 -80 0 25 48 0 32 20 0 22 37 0 35 31 0.14 64 0 0 0 49 41 19 2 21.3 6 252 -81 0 46 25 0 52 56 0 43 14 0 56 7 0.15 65 0 0 1 10 8 19 2 21.9 5 252 -82 1 6 52 1 13 23 1 3 41 1 16 34 0.15 66 0 0 1 30 24 19 2 22.4 4 252 -83 1 27 9 1 33 40 1 23 58 1 36 50 0.16 67 0 0 1 50 30 19 2 22.8 3 252 -84 1 47 15 1 53 46 1 44 5 1 56 56 0.18 68 0 0 2 10 25 19 2 23.0 2 252 -85 2 7 10 2 13 40 2 4 0 2 16 50 0.22 69 0 0 2 30 9 19 2 23.1 1 252 -86 2 26 54 2 33 24 2 23 44 2 36 34 0.38 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 6284-00737-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 46 39.6981 DE: -17 55 08.605 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 46 39.6980 DE: -17 55 08.605 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.1 * B mag [mag]: 11.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (46303) 2001 OZ44 asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.72030 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#44 date of fit: 2023 Apr 25 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): 0.016", 0.001", 72.03° remarks: * orbital elements for (46303)2001 OZ44 : Mean anomaly = 99.1733589445 deg Arg. of pericenter = 273.8781545907 deg Long. of node = 279.0703936189 deg Inclination = 12.3931730264 deg Eccentricity = 0.0908084491 Semimajor axis = 2.7942009737 AU Perihelion dist = 2.5404639167 AU Mag: H = 13.59, G = 0.15 Epoch of elements : MJD 60589.78929891 TDT (2024 Oct 06.7893) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#442023Apr25,0.62,2024,10,6,18.943180,0.016603,-0.105913,10.167817,1.607021,0.005765,0.000508,0.000000,0.000000 -18.0480,-17.8929,-107.17,-5.53,False TYC 6284-00737-1,18.77769394,-17.9190570,11.81,11.13,10.76,0.1,0,,18.80168318,-17.8929327,7.93,7.84,0,0,0 46303,2001 OZ44,19.06,11.313,2.7203,0,0,2.303,5.20,,1.0,0 0,99.0068,2024,10,6,273.8782,279.0704,12.3932,0.09081,2.79420,2.54046,13.59,5.0,0.15 1.487,0.0160,0.0012,72,0.0028,Known errors,0.69,0,-1,-1 20241006_0737-1,60140.61 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org