IOTA/IOTA-ES occultation update for (3269) Vibert-Douglas / TYC 7405-03037-1 event on 2024 Oct 29, 17:27 UT Visible from Summary ------- On 2024 Oct 29 UT, the 11.2549506987619 km diameter asteroid (3269) Vibert-Douglas will occult a 8.9 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 9.62 mag to 18.49 mag (the magnitude of the asteroid) for at most 0.410 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: 95 * date and approx. time of event: 2024 Oct 29, 17:25 - 2024 Oct 29, 17:30 * geocentric midpoint of event [JD]: 2460613.22770454 * magnitude of target star: 8.87 * magnitude drop [mag]: 9.62 * estimated maximum duration [s]: 0.410 * Moon: 7 % sunlit, 89° distance * Sun: 59° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.002", 83°) * approx speed of asteroid's shadow [km/s]: 32.8898 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7405-03037-1 by 3269 Vibert-Douglas on 2024 Oct 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 -102 0 0 16 17 27 17 25 15.0 0 128 56 16 11 43 .. .. .. 16 6 42 .. .. .. 16 13 39 ... .. .. .... -101 0 0 15 31 43 17 25 15.1 1 129 57 15 26 2 15 37 25 15 21 4 15 42 24 15 27 58 15 35 29 -0.18 -100 0 0 14 46 47 17 25 15.3 2 129 58 14 41 9 14 52 26 14 36 13 14 57 23 14 43 3 14 50 31 -0.43 - 99 0 0 14 2 39 17 25 15.5 4 129 59 13 57 3 14 8 15 13 52 9 14 13 10 13 58 56 14 6 21 -0.52 - 98 0 0 13 19 19 17 25 15.9 5 130 60 13 13 46 13 24 53 13 8 55 13 29 45 13 15 39 13 23 0 -0.56 - 97 0 0 12 36 49 17 25 16.4 6 130 61 12 31 18 12 42 20 12 26 29 12 47 10 12 33 10 12 40 28 -0.59 - 96 0 0 11 55 10 17 25 16.9 7 130 62 11 49 41 12 0 38 11 44 55 12 5 26 11 51 32 11 58 47 -0.61 - 95 0 0 11 14 21 17 25 17.6 8 130 63 11 8 55 11 19 47 11 4 11 11 24 33 11 10 46 11 17 57 -0.62 - 94 0 0 10 34 24 17 25 18.4 10 130 64 10 29 1 10 39 48 10 24 19 10 44 32 10 30 51 10 37 59 -0.63 - 93 0 0 9 55 20 17 25 19.2 11 131 65 9 49 59 10 0 41 9 45 18 10 5 23 9 51 48 9 58 53 -0.64 - 92 0 0 9 17 8 17 25 20.2 12 131 66 9 11 50 9 22 27 9 7 11 9 27 7 9 13 37 9 20 39 -0.64 - 91 0 0 8 39 50 17 25 21.3 13 131 67 8 34 33 8 45 6 8 29 57 8 49 44 8 36 20 8 43 19 -0.65 - 90 0 0 8 3 24 17 25 22.4 14 131 68 7 58 10 8 8 39 7 53 35 8 13 15 7 59 56 8 6 53 -0.65 - 89 0 0 7 27 53 17 25 23.6 15 131 69 7 22 41 7 33 5 7 18 8 7 37 39 7 24 26 7 31 20 -0.66 - 88 0 0 6 53 15 17 25 24.9 17 132 69 6 48 5 6 58 26 6 43 34 7 2 58 6 49 50 6 56 41 -0.66 - 87 0 0 6 19 32 17 25 26.3 18 132 70 6 14 24 6 24 40 6 9 55 6 29 10 6 16 8 6 22 56 -0.66 - 86 0 0 5 46 42 17 25 27.8 19 132 70 5 41 36 5 51 49 5 37 9 5 56 17 5 43 20 5 50 5 -0.67 - 85 0 0 5 14 47 17 25 29.3 20 132 71 5 9 43 5 19 52 5 5 18 5 24 18 5 11 26 5 18 9 -0.67 - 84 0 0 4 43 47 17 25 31.0 21 132 71 4 38 45 4 48 49 4 34 20 4 53 14 4 40 27 4 47 7 -0.67 - 83 0 0 4 13 40 17 25 32.7 22 133 72 4 8 40 4 18 41 4 4 17 4 23 4 4 10 22 4 16 59 -0.67 - 82 0 0 3 44 28 17 25 34.4 23 133 72 3 39 30 3 49 27 3 35 9 3 53 49 3 41 11 3 47 46 -0.67 - 81 0 0 3 16 11 17 25 36.3 24 133 72 3 11 14 3 21 8 3 6 54 3 25 28 3 12 54 3 19 27 -0.67 - 80 0 0 2 48 47 17 25 38.2 25 133 73 2 43 52 2 53 43 2 39 34 2 58 2 2 45 32 2 52 3 -0.68 - 79 0 0 2 22 18 17 25 40.1 26 133 73 2 17 24 2 27 12 2 13 7 2 31 29 2 19 3 2 25 32 -0.68 - 78 0 0 1 56 42 17 25 42.2 27 134 73 1 51 50 2 1 34 1 47 35 2 5 51 1 53 29 1 59 55 -0.68 - 77 0 0 1 32 0 17 25 44.3 28 134 73 1 27 10 1 36 51 1 22 56 1 41 6 1 28 48 1 35 13 -0.68 - 76 0 0 1 8 13 17 25 46.4 29 134 72 1 3 24 1 13 2 0 59 11 1 17 16 1 5 1 1 11 24 -0.68 - 75 0 0 0 45 18 17 25 48.6 30 134 72 0 40 31 0 50 6 0 36 19 0 54 19 0 42 8 0 48 29 -0.68 - 74 0 0 0 23 17 17 25 50.9 31 135 72 0 18 31 0 28 4 0 14 20 0 32 15 0 20 8 0 26 27 -0.68 - 73 0 0 0 2 9 17 25 53.2 32 135 71 - 0 2 36 0 6 55 - 0 6 45 0 11 5 - 0 0 59 0 5 18 -0.68 - 72 0 0 - 0 18 5 17 25 55.6 33 135 71 - 0 22 49 - 0 13 21 - 0 26 58 - 0 9 12 - 0 21 13 - 0 14 57 -0.69 - 71 0 0 - 0 37 28 17 25 58.0 34 136 70 - 0 42 10 - 0 32 45 - 0 46 17 - 0 28 37 - 0 40 35 - 0 34 20 -0.69 - 70 0 0 - 0 55 57 17 26 0.5 35 136 70 - 1 0 39 - 0 51 15 - 1 4 45 - 0 47 8 - 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Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 7405-03037-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 19 34.0592 DE: -36 41 46.867 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 19 34.0591 DE: -36 41 46.867 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 8.9 * B mag [mag]: 10.6 * Diameter [mas]: 1.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3269) Vibert-Douglas asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.005 distance from Earth [AU]: 3.23610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#45 date of fit: 2023 Apr 24 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): 0.012", 0.002", 83.399° remarks: * orbital elements for (3269)Vibert-Douglas : Mean anomaly = 270.9326871749 deg Arg. of pericenter = 44.3687108153 deg Long. of node = 353.2248153374 deg Inclination = 17.1764094998 deg Eccentricity = 0.1574853574 Semimajor axis = 2.7859757144 AU Perihelion dist = 2.3472253333 AU Mag: H = 12.76, G = 0.15 Epoch of elements : MJD 60612.72770433 TDT (2024 Oct 29.7277) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#452023Apr24,0.41,2024,10,29,17.464909,-0.145916,0.555285,17.958077,4.703819,0.004992,-0.000536,-0.000001,0.000000 -25.2004,-36.6879,-86.06,-13.78,False TYC 7405-03037-1,18.32612760,-36.6963521,10.62,8.87,7.93,1.0,4,,18.35386310,-36.6878955,9.62,10.12,0,0,0 3269,Vibert-Douglas,18.49,13.602,3.2361,0,0,4.057,12.79,,1.0,0 0,270.7784,2024,10,29,44.3687,353.2248,17.1764,0.15749,2.78598,2.34723,12.76,5.0,0.15 1.437,0.0117,0.0019,83,0.0025,Known errors,0.94,0,-1,-1 20241029_3037-1,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org