IOTA/IOTA-ES occultation update for (2765) Dinant / TYC 0602-00385-1 event on 2023 Nov 07, 13:20 UT Visible from Australia Summary ------- On 2023 Nov 07 UT, the 23.6 km diameter asteroid (2765) Dinant will occult a 10.6 mag star in the constellation Pisces for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.69 mag to 17.30 mag (the magnitude of the asteroid) for at most 2.560 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: 2023 Nov 07, 13:11 - 2023 Nov 07, 13:29 * geocentric midpoint of event [JD]: 2460256.05596208 * magnitude of target star: 10.61 * magnitude drop [mag]: 6.69 * estimated maximum duration [s]: 2.560 * Moon: 30 % sunlit, 143° distance * Sun: 146° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 30 * 1 sigma uncertainty interval [path widths]: +/- 0.33 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 52°) * approx speed of asteroid's shadow [km/s]: 9.2341 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0602-00385-1 by 2765 Dinant on 2023 Nov 7 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 50 0 0 -53 48 48 13 29 39.1 0 64 21 -53 39 44 -53 57 53 -53 33 44 -54 3 56 .... 51 0 0 -53 31 10 13 29 39.0 1 63 20 -53 22 5 -53 40 17 -53 16 4 -53 46 21 0.32 52 0 0 -53 13 13 13 29 38.8 2 62 20 -53 4 6 -53 22 21 -52 58 4 -53 28 25 0.52 53 0 0 -52 54 55 13 29 38.5 2 61 19 -52 45 47 -53 4 4 -52 39 43 -53 10 10 0.60 54 0 0 -52 36 17 13 29 38.0 3 61 19 -52 27 7 -52 45 27 -52 21 3 -52 51 34 0.64 55 0 0 -52 17 19 13 29 37.4 4 60 18 -52 8 8 -52 26 31 -52 2 3 -52 32 38 0.67 56 0 0 -51 58 1 13 29 36.7 4 59 17 -51 48 49 -52 7 14 -51 42 43 -52 13 22 0.69 57 0 0 -51 38 23 13 29 35.9 5 58 17 -51 29 10 -51 47 38 -51 23 3 -51 53 46 0.71 58 0 0 -51 18 26 13 29 34.9 6 57 16 -51 9 11 -51 27 41 -51 3 4 -51 33 51 0.72 59 0 0 -50 58 9 13 29 33.7 6 57 15 -50 48 54 -51 7 26 -50 42 45 -51 13 36 0.73 60 0 0 -50 37 33 13 29 32.5 7 56 15 -50 28 17 -50 46 51 -50 22 8 -50 53 2 0.73 61 0 0 -50 16 38 13 29 31.0 8 55 14 -50 7 20 -50 25 57 -50 1 11 -50 32 9 0.74 62 0 0 -49 55 24 13 29 29.4 9 54 13 -49 46 6 -50 4 44 -49 39 55 -50 10 57 0.74 63 0 0 -49 33 52 13 29 27.7 9 54 13 -49 24 32 -49 43 13 -49 18 21 -49 49 26 0.75 64 0 0 -49 12 1 13 29 25.8 10 53 12 -49 2 41 -49 21 23 -48 56 29 -49 27 37 0.75 65 0 0 -48 49 53 13 29 23.8 11 52 11 -48 40 31 -48 59 16 -48 34 19 -49 5 30 0.75 66 0 0 -48 27 26 13 29 21.6 12 51 10 -48 18 4 -48 36 50 -48 11 51 -48 43 5 0.76 67 0 0 -48 4 43 13 29 19.2 12 50 10 -47 55 20 -48 14 7 -47 49 7 -48 20 23 0.76 68 0 0 -47 41 42 13 29 16.6 13 50 9 -47 32 18 -47 51 7 -47 26 5 -47 57 23 0.76 69 0 0 -47 18 25 13 29 13.9 14 49 8 -47 9 1 -47 27 51 -47 2 47 -47 34 7 0.76 70 0 0 -46 54 52 13 29 11.0 15 48 8 -46 45 27 -47 4 18 -46 39 13 -47 10 35 0.77 71 0 0 -46 31 3 13 29 7.9 15 47 7 -46 21 38 -46 40 30 -46 15 23 -46 46 47 0.77 72 0 0 -46 6 59 13 29 4.6 16 47 6 -45 57 33 -46 16 26 -45 51 18 -46 22 44 0.77 73 0 0 -45 42 40 13 29 1.2 17 46 5 -45 33 14 -45 52 8 -45 26 58 -45 58 26 0.77 74 0 0 -45 18 7 13 28 57.6 18 45 4 -45 8 40 -45 27 35 -45 2 25 -45 33 53 0.77 75 0 0 -44 53 20 13 28 53.8 18 44 4 -44 43 53 -45 2 49 -44 37 37 -45 9 7 0.77 76 0 0 -44 28 20 13 28 49.7 19 44 3 -44 18 53 -44 37 49 -44 12 37 -44 44 7 0.77 77 0 0 -44 3 8 13 28 45.6 20 43 2 -43 53 40 -44 12 36 -43 47 24 -44 18 55 0.78 78 0 0 -43 37 43 13 28 41.2 21 42 1 -43 28 15 -43 47 12 -43 21 59 -43 53 30 0.78 79 0 0 -43 12 7 13 28 36.6 22 41 0 -43 2 39 -43 21 36 -42 56 23 -43 27 54 0.78 80 0 0 -42 46 20 13 28 31.8 22 41 0 -42 36 52 -42 55 49 -42 30 36 -43 2 8 0.78 81 0 0 -42 20 23 13 28 26.8 23 40 -1 -42 10 55 -42 29 52 -42 4 39 -42 36 10 0.78 82 0 0 -41 54 16 13 28 21.7 24 39 -2 -41 44 49 -42 3 45 -41 38 33 -42 10 3 0.78 83 0 0 -41 28 1 13 28 16.3 25 38 -3 -41 18 34 -41 37 29 -41 12 18 -41 43 48 0.78 84 0 0 -41 1 37 13 28 10.8 26 37 -4 -40 52 11 -41 11 6 -40 45 55 -41 17 24 0.78 85 0 0 -40 35 6 13 28 5.0 26 37 -5 -40 25 40 -40 44 34 -40 19 24 -40 50 52 0.78 86 0 0 -40 8 29 13 27 59.1 27 36 -6 -39 59 3 -40 17 56 -39 52 47 -40 24 14 0.78 87 0 0 -39 41 45 13 27 52.9 28 35 -6 -39 32 19 -39 51 12 -39 26 4 -39 57 29 0.78 88 0 0 -39 14 56 13 27 46.6 29 34 -7 -39 5 31 -39 24 23 -38 59 16 -39 30 40 0.78 89 0 0 -38 48 2 13 27 40.0 30 33 -8 -38 38 38 -38 57 28 -38 32 24 -39 3 45 0.78 90 0 0 -38 21 5 13 27 33.3 30 33 -9 -38 11 41 -38 30 30 -38 5 27 -38 36 47 0.78 91 0 0 -37 54 5 13 27 26.4 31 32 -10 -37 44 41 -38 3 29 -37 38 28 -38 9 45 0.78 92 0 0 -37 27 2 13 27 19.3 32 31 -11 -37 17 39 -37 36 26 -37 11 27 -37 42 41 0.78 93 0 0 -36 59 58 13 27 12.0 33 30 -12 -36 50 36 -37 9 21 -36 44 24 -37 15 36 0.78 94 0 0 -36 32 53 13 27 4.5 33 29 -13 -36 23 32 -36 42 15 -36 17 20 -36 48 29 0.78 95 0 0 -36 5 48 13 26 56.9 34 28 -14 -35 56 28 -36 15 9 -35 50 16 -36 21 23 0.78 96 0 0 -35 38 44 13 26 49.0 35 27 -14 -35 29 24 -35 48 4 -35 23 14 -35 54 17 0.78 97 0 0 -35 11 41 13 26 41.0 36 26 -15 -35 2 23 -35 21 0 -34 56 13 -35 27 13 0.78 98 0 0 -34 44 40 13 26 32.8 37 25 -16 -34 35 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49 0.97 -153 0 0 -18 24 29 13 11 29.9 1 286 -31 -18 16 0 -18 32 59 -18 10 23 -18 38 38 1.29 Uncertainty in time = +/- 3 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 0602-00385-1 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 26 58.1558 DE: +14 54 00.647 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 26 58.1557 DE: +14 54 00.647 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2765) Dinant asteroid class: approx. diameter [km]: 24 approx. diameter ["]: 0.014 distance from Earth [AU]: 2.27870 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 date of fit: 2023 Oct 09 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): 0.014", 0.001", 51.895° remarks: * orbital elements for (2765)Dinant : Mean anomaly = 274.0108286079 deg Arg. of pericenter = 126.8038219452 deg Long. of node = 348.0384617973 deg Inclination = 14.0281324715 deg Eccentricity = 0.0532492317 Semimajor axis = 3.1521279718 AU Perihelion dist = 2.9842795791 AU Mag: H = 12.48, G = 0.15 Epoch of elements : MJD 60255.55562500 TDT (2023 Nov 07.5556) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Oct09,2.56,2023,11,7,13.343090,0.196697,-0.580581,-4.936818,-1.671144,0.003288,0.000391,0.000001,0.000001 120.4194,15.0339,-24.23,-16.30,False TYC 0602-00385-1,0.44948772,14.9001798,0.00,10.61,0.00,0.0,0,,0.47024999,15.0338735,6.69,0.00,0,0,0 2765,Dinant,17.30,23.600,2.2787,0,0,-1.315,-6.45,,2.0,0 0,273.9130,2023,11,7,126.8038,348.0385,14.0281,0.05325,3.15213,2.98428,12.37,5.0,0.15 1.332,0.0140,0.0010,52,0.0140,Known errors,-1.00,0,-1,-1 20231107_0385-1,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:02 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org