IOTA/IOTA-ES occultation update for (178) Belisana / TYC 6362-00448-1 event on 2023 Nov 04, 13:21 UT Visible from Australia Summary ------- On 2023 Nov 04 UT, the 37.0117102289278 km diameter asteroid (178) Belisana will occult a 10.2 mag star in the constellation Capricornus 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 3.88 mag to 14.05 mag (the magnitude of the asteroid) for at most 2.900 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: 100 * date and approx. time of event: 2023 Nov 04, 13:13 - 2023 Nov 04, 13:28 * geocentric midpoint of event [JD]: 2460253.05654104 * magnitude of target star: 10.20 * magnitude drop [mag]: 3.88 * estimated maximum duration [s]: 2.900 * Moon: 58 % sunlit, 160° distance * Sun: 101° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 42 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 1.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.001", 71°) * approx speed of asteroid's shadow [km/s]: 12.8151 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6362-00448-1 by 178 Belisana on 2023 Nov 4 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 - 25 0 0 -49 21 22 13 14 5.9 1 114 56 -49 33 55 -49 8 50 -49 34 53 -49 7 52 .... - 24 0 0 -49 39 2 13 14 6.0 1 113 56 -49 51 33 -49 26 33 -49 52 31 -49 25 35 0.50 - 23 0 0 -49 56 18 13 14 6.2 2 113 55 -50 8 46 -49 43 51 -50 9 44 -49 42 53 0.51 - 22 0 0 -50 13 9 13 14 6.5 3 112 55 -50 25 35 -50 0 44 -50 26 33 -49 59 46 0.52 - 21 0 0 -50 29 35 13 14 6.9 3 111 55 -50 41 59 -50 17 13 -50 42 57 -50 16 15 0.52 - 20 0 0 -50 45 37 13 14 7.3 4 110 55 -50 57 58 -50 33 17 -50 58 56 -50 32 19 0.53 - 19 0 0 -51 1 14 13 14 7.9 5 110 54 -51 13 34 -50 48 57 -51 14 31 -50 47 59 0.53 - 18 0 0 -51 16 28 13 14 8.5 5 109 54 -51 28 45 -51 4 13 -51 29 42 -51 3 15 0.53 - 17 0 0 -51 31 17 13 14 9.1 6 108 54 -51 43 32 -51 19 4 -51 44 29 -51 18 7 0.53 - 16 0 0 -51 45 43 13 14 9.9 7 107 53 -51 57 55 -51 33 32 -51 58 52 -51 32 35 0.53 - 15 0 0 -51 59 44 13 14 10.7 7 106 53 -52 11 54 -51 47 36 -52 12 51 -51 46 39 0.53 - 14 0 0 -52 13 22 13 14 11.6 8 106 53 -52 25 30 -52 1 16 -52 26 27 -52 0 19 0.53 - 13 0 0 -52 26 37 13 14 12.5 9 105 52 -52 38 43 -52 14 33 -52 39 40 -52 13 36 0.53 - 12 0 0 -52 39 29 13 14 13.6 9 104 52 -52 51 32 -52 27 26 -52 52 29 -52 26 30 0.53 - 11 0 0 -52 51 57 13 14 14.6 10 103 51 -53 3 59 -52 39 57 -53 4 55 -52 39 1 0.53 - 10 0 0 -53 4 3 13 14 15.8 11 102 51 -53 16 2 -52 52 4 -53 16 59 -52 51 8 0.53 - 9 0 0 -53 15 46 13 14 17.0 11 102 51 -53 27 43 -53 3 49 -53 28 39 -53 2 53 0.53 - 8 0 0 -53 27 6 13 14 18.2 12 101 50 -53 39 2 -53 15 11 -53 39 57 -53 14 16 0.53 - 7 0 0 -53 38 4 13 14 19.5 13 100 50 -53 49 58 -53 26 11 -53 50 53 -53 25 16 0.53 - 6 0 0 -53 48 39 13 14 20.9 13 99 49 -54 0 31 -53 36 49 -54 1 27 -53 35 53 0.53 - 5 0 0 -53 58 53 13 14 22.3 14 98 49 -54 10 43 -53 47 4 -54 11 39 -53 46 9 0.53 - 4 0 0 -54 8 45 13 14 23.8 14 97 49 -54 20 33 -53 56 58 -54 21 28 -53 56 3 0.53 - 3 0 0 -54 18 15 13 14 25.3 15 97 48 -54 30 1 -54 6 30 -54 30 57 -54 5 35 0.53 - 2 0 0 -54 27 23 13 14 26.9 16 96 48 -54 39 8 -54 15 40 -54 40 3 -54 14 45 0.53 - 1 0 0 -54 36 10 13 14 28.6 16 95 47 -54 47 54 -54 24 28 -54 48 49 -54 23 34 0.53 - 0 0 0 -54 44 36 13 14 30.2 17 94 47 -54 56 18 -54 32 56 -54 57 13 -54 32 1 0.53 1 0 0 -54 52 41 13 14 32.0 17 93 46 -55 4 21 -54 41 2 -55 5 16 -54 40 8 0.53 2 0 0 -55 0 25 13 14 33.8 18 92 46 -55 12 3 -54 48 47 -55 12 58 -54 47 53 0.53 3 0 0 -55 7 48 13 14 35.6 19 92 46 -55 19 25 -54 56 12 -55 20 19 -54 55 17 0.53 4 0 0 -55 14 50 13 14 37.5 19 91 45 -55 26 26 -55 3 15 -55 27 20 -55 2 21 0.53 5 0 0 -55 21 32 13 14 39.4 20 90 45 -55 33 6 -55 9 58 -55 34 1 -55 9 4 0.53 6 0 0 -55 27 53 13 14 41.3 20 89 44 -55 39 26 -55 16 21 -55 40 21 -55 15 27 0.53 7 0 0 -55 33 54 13 14 43.4 21 88 44 -55 45 26 -55 22 23 -55 46 20 -55 21 29 0.53 8 0 0 -55 39 35 13 14 45.4 21 87 43 -55 51 6 -55 28 5 -55 52 0 -55 27 12 0.53 9 0 0 -55 44 56 13 14 47.5 22 86 43 -55 56 26 -55 33 27 -55 57 20 -55 32 33 0.53 10 0 0 -55 49 57 13 14 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0.68 169 0 0 - 4 20 18 13 28 45.3 2 254 -65 - 4 32 17 - 4 8 20 - 4 33 13 - 4 7 24 0.75 170 0 0 - 4 2 16 13 28 45.6 1 254 -65 - 4 14 13 - 3 50 21 - 4 15 9 - 3 49 25 1.01 Uncertainty in time = +/- 1 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 6362-00448-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 40 25.3559 DE: -16 05 25.999 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 40 25.3559 DE: -16 05 25.999 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.2 * B mag [mag]: 11.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (178) Belisana asteroid class: approx. diameter [km]: 37 approx. diameter ["]: 0.025 distance from Earth [AU]: 2.05840 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#65 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): 0.009", 0.001", 71° remarks: * orbital elements for (178)Belisana : Mean anomaly = 77.8374175905 deg Arg. of pericenter = 211.9126917727 deg Long. of node = 51.0842644999 deg Inclination = 1.8934726154 deg Eccentricity = 0.0419922466 Semimajor axis = 2.4601044454 AU Perihelion dist = 2.3567991328 AU Mag: H = 9.56, G = 0.15 Epoch of elements : MJD 60252.55660833 TDT (2023 Nov 04.5566) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#652023Oct09,2.90,2023,11,4,13.356985,0.187965,-0.426135,6.616801,2.921875,0.005287,0.001872,0.000000,0.000000 81.5459,-15.9834,-24.46,-15.39,False TYC 6362-00448-1,21.67371000,-16.0905550,11.00,10.20,9.77,0.1,0,,21.69548230,-15.9833960,3.88,3.86,0,0,0 178,Belisana,14.05,37.161,2.0584,0,0,1.961,12.49,,3.2,0 0,77.6952,2023,11,4,211.9127,51.0843,1.8935,0.04199,2.46010,2.35680,9.43,5.0,0.15 1.039,0.0093,0.0006,71,0.0094,Known errors,-1.00,0,-1,-1 20231104_0448-1,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:00 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org