IOTA/IOTA-ES occultation update for (11) Parthenope / TYC 6236-00776-1 event on 2023 Mar 20, 05:10 UT Visible from South America Summary ------- On 2023 Mar 20 UT, the 150.9 km diameter asteroid (11) Parthenope will occult a 10.3 mag star in the constellation Ophiuchus for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.38 mag to 11.29 mag (the magnitude of the asteroid) for at most 11.620 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: 99 * date and approx. time of event: 2023 Mar 20, 05:02 - 2023 Mar 20, 05:17 * geocentric midpoint of event [JD]: 2460023.71541329 * magnitude of target star: 10.27 * magnitude drop [mag]: 1.38 * estimated maximum duration [s]: 11.620 * Moon: 3 % sunlit, 82° distance * Sun: 101° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 167 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.013", 100°) * approx speed of asteroid's shadow [km/s]: 12.9875 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6236-00776-1 by 11 Parthenope on 2023 Mar 20 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 - 94 0 0 -25 43 35 5 2 48.4 0 109 -58 -26 31 55 -24 55 34 -26 44 37 -24 43 4 .... - 93 0 0 -26 2 58 5 2 48.5 1 109 -58 -26 51 19 -25 14 57 -27 4 1 -25 2 27 0.41 - 92 0 0 -26 22 20 5 2 48.8 2 109 -58 -27 10 42 -25 34 19 -27 23 23 -25 21 49 0.44 - 91 0 0 -26 41 40 5 2 49.3 3 108 -58 -27 30 1 -25 53 38 -27 42 43 -25 41 8 0.45 - 90 0 0 -27 0 56 5 2 49.9 4 108 -59 -27 49 18 -26 12 55 -28 2 0 -26 0 25 0.46 - 89 0 0 -27 20 10 5 2 50.6 5 107 -59 -28 8 31 -26 32 9 -28 21 13 -26 19 39 0.46 - 88 0 0 -27 39 20 5 2 51.5 6 107 -59 -28 27 41 -26 51 19 -28 40 23 -26 38 49 0.46 - 87 0 0 -27 58 26 5 2 52.5 7 106 -59 -28 46 47 -27 10 26 -28 59 28 -26 57 56 0.47 - 86 0 0 -28 17 27 5 2 53.7 8 106 -59 -29 5 47 -27 29 28 -29 18 29 -27 16 58 0.47 - 85 0 0 -28 36 24 5 2 55.0 9 105 -59 -29 24 43 -27 48 25 -29 37 25 -27 35 55 0.47 - 84 0 0 -28 55 15 5 2 56.5 10 105 -59 -29 43 34 -28 7 17 -29 56 15 -27 54 48 0.47 - 83 0 0 -29 14 1 5 2 58.1 11 104 -59 -30 2 18 -28 26 3 -30 14 59 -28 13 34 0.47 - 82 0 0 -29 32 40 5 2 59.8 12 104 -59 -30 20 57 -28 44 44 -30 33 37 -28 32 15 0.47 - 81 0 0 -29 51 13 5 3 1.7 13 103 -59 -30 39 29 -29 3 18 -30 52 9 -28 50 50 0.47 - 80 0 0 -30 9 39 5 3 3.7 14 103 -59 -30 57 53 -29 21 45 -31 10 33 -29 9 17 0.47 - 79 0 0 -30 27 58 5 3 5.8 14 102 -59 -31 16 11 -29 40 5 -31 28 50 -29 27 38 0.47 - 78 0 0 -30 46 9 5 3 8.0 15 102 -59 -31 34 20 -29 58 18 -31 46 59 -29 45 51 0.47 - 77 0 0 -31 4 12 5 3 10.4 16 101 -59 -31 52 22 -30 16 23 -32 5 0 -30 3 56 0.47 - 76 0 0 -31 22 7 5 3 12.9 17 101 -58 -32 10 15 -30 34 19 -32 22 53 -30 21 53 0.47 - 75 0 0 -31 39 53 5 3 15.5 18 100 -58 -32 27 59 -30 52 7 -32 40 36 -30 39 41 0.47 - 74 0 0 -31 57 30 5 3 18.3 19 99 -58 -32 45 34 -31 9 46 -32 58 11 -30 57 20 0.47 - 73 0 0 -32 14 57 5 3 21.2 20 99 -58 -33 2 59 -31 27 15 -33 15 36 -31 14 50 0.47 - 72 0 0 -32 32 15 5 3 24.1 21 98 -57 -33 20 15 -31 44 35 -33 32 51 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0 0 -36 0 7 5 4 12.3 32 89 -51 -36 47 31 -35 13 2 -36 59 57 -35 0 47 0.47 - 58 0 0 -36 14 39 5 4 16.6 33 89 -51 -37 1 59 -35 27 37 -37 14 25 -35 15 23 0.47 - 57 0 0 -36 28 58 5 4 21.1 34 88 -50 -37 16 15 -35 41 59 -37 28 40 -35 29 45 0.47 - 56 0 0 -36 43 2 5 4 25.6 34 87 -49 -37 30 16 -35 56 7 -37 42 40 -35 43 54 0.47 - 55 0 0 -36 56 53 5 4 30.2 35 86 -49 -37 44 4 -36 10 1 -37 56 27 -35 57 49 0.47 - 54 0 0 -37 10 30 5 4 34.8 36 86 -48 -37 57 37 -36 23 41 -38 10 0 -36 11 30 0.47 - 53 0 0 -37 23 53 5 4 39.6 37 85 -48 -38 10 57 -36 37 7 -38 23 18 -36 24 57 0.47 - 52 0 0 -37 37 1 5 4 44.4 38 84 -47 -38 24 1 -36 50 19 -38 36 22 -36 38 9 0.47 - 51 0 0 -37 49 54 5 4 49.2 38 83 -46 -38 36 51 -37 3 15 -38 49 11 -36 51 7 0.47 - 50 0 0 -38 2 33 5 4 54.2 39 82 -46 -38 49 27 -37 15 58 -39 1 46 -37 3 50 0.47 - 49 0 0 -38 14 57 5 4 59.2 40 81 -45 -39 1 48 -37 28 25 -39 14 5 -37 16 18 0.47 - 48 0 0 -38 27 7 5 5 4.2 41 80 -44 -39 13 53 -37 40 38 -39 26 10 -37 28 32 0.47 - 47 0 0 -38 39 1 5 5 9.3 41 79 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-24 5 24 -25 54 29 -23 52 54 0.53 91 0 0 -24 33 51 5 17 33.8 7 254 63 -25 22 12 -23 45 50 -25 34 54 -23 33 21 0.53 92 0 0 -24 14 17 5 17 34.8 6 253 64 -25 2 37 -23 26 17 -25 15 18 -23 13 47 0.54 93 0 0 -23 54 43 5 17 35.7 5 253 65 -24 43 2 -23 6 44 -24 55 43 -22 54 15 0.55 94 0 0 -23 35 10 5 17 36.4 4 252 65 -24 23 28 -22 47 13 -24 36 9 -22 34 44 0.57 95 0 0 -23 15 39 5 17 36.9 3 252 66 -24 3 56 -22 27 43 -24 16 37 -22 15 14 0.60 96 0 0 -22 56 11 5 17 37.3 2 252 67 -23 44 26 -22 8 15 -23 57 6 -21 55 47 0.67 97 0 0 -22 36 44 5 17 37.6 1 251 67 -23 24 58 -21 48 50 -23 37 38 -21 36 22 0.85 98 0 0 -22 17 20 5 17 37.7 0 251 68 -23 5 33 .. .. .. -23 18 12 .. .. .. 37.70 Uncertainty in time = +/- 2 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 6236-00776-1 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 08 30.4828 DE: -17 36 59.319 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 08 30.4837 DE: -17 36 59.320 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (11) Parthenope asteroid class: ShapeModel approx. diameter [km]: 151 approx. diameter ["]: 0.103 distance from Earth [AU]: 2.01780 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#124 date of fit: 2023 Feb 07 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", 0.013", 100.273° remarks: * orbital elements for (11)Parthenope : Mean anomaly = 283.8089396982 deg Arg. of pericenter = 195.7461137447 deg Long. of node = 125.5202475186 deg Inclination = 4.6313478089 deg Eccentricity = 0.0994062483 Semimajor axis = 2.4530286177 AU Perihelion dist = 2.2091822458 AU Mag: H = 6.73, G = 0.15 Epoch of elements : MJD 60023.21562500 TDT (2023 Mar 20.2156) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1242023Feb07,11.62,2023,3,20,5.169919,0.010347,-0.423082,7.327138,0.222785,-0.005568,0.000386,0.000000,0.000000 2.4321,-17.6475,104.36,-0.27,False TYC 6236-00776-1,17.14180076,-17.6164775,0.00,10.27,0.00,0.0,0,,17.16417502,-17.6474600,1.38,0.00,0,0,0 11,Parthenope,11.29,150.9,2.0178,0,0,2.234,0.97,,8.4,0 0,283.7536,2023,3,20,195.7461,125.5202,4.6313,0.09941,2.45303,2.20918,6.73,5.0,0.15 1.131,0.0163,0.0133,100,0.0135,Known errors,-1.00,-1,-1,-1 20230320_0776-1,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org