IOTA/IOTA-ES occultation update for (742) Edisona / TYC 5565-00030-1 event on 2024 Feb 11, 21:22 UT Visible from Summary ------- On 2024 Feb 11 UT, the 47.4071327855109 km diameter asteroid (742) Edisona will occult a 9.1 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.25 mag to 15.34 mag (the magnitude of the asteroid) for at most 4.780 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: 2024 Feb 11, 21:12 - 2024 Feb 11, 21:33 * geocentric midpoint of event [JD]: 2460352.39090659 * magnitude of target star: 9.09 * magnitude drop [mag]: 6.25 * estimated maximum duration [s]: 4.780 * Moon: 5 % sunlit, 127° distance * Sun: 100° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 48 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 3.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.002", 118°) * approx speed of asteroid's shadow [km/s]: 10.0176 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5565-00030-1 by 742 Edisona on 2024 Feb 11 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 36 0 0 15 52 14 21 12 20.9 1 99 -81 15 39 5 16 5 24 15 32 57 16 11 32 .... 37 0 0 15 43 32 21 12 21.1 2 99 -82 15 30 22 15 56 42 15 24 14 16 2 50 -0.03 38 0 0 15 34 37 21 12 21.6 3 99 -83 15 21 27 15 47 48 15 15 18 15 53 56 -0.05 39 0 0 15 25 31 21 12 22.2 4 99 -83 15 12 20 15 38 42 15 6 11 15 44 50 -0.06 40 0 0 15 16 12 21 12 23.0 5 100 -84 15 3 1 15 29 24 14 56 53 15 35 33 -0.07 41 0 0 15 6 42 21 12 24.0 6 100 -85 14 53 31 15 19 54 14 47 22 15 26 3 -0.07 42 0 0 14 57 1 21 12 25.2 7 100 -86 14 43 49 15 10 13 14 37 40 15 16 23 -0.07 43 0 0 14 47 8 21 12 26.6 8 100 -87 14 33 56 15 0 21 14 27 47 15 6 30 -0.07 44 0 0 14 37 5 21 12 28.2 9 101 -88 14 23 52 14 50 18 14 17 42 14 56 27 -0.07 45 0 0 14 26 49 21 12 29.9 10 101 -89 14 13 36 14 40 3 14 7 27 14 46 13 -0.07 46 0 0 14 16 23 21 12 31.9 11 101 -89 14 3 10 14 29 37 13 57 0 14 35 47 -0.08 47 0 0 14 5 47 21 12 34.0 12 101 -88 13 52 33 14 19 1 13 46 23 14 25 11 -0.08 48 0 0 13 54 59 21 12 36.4 13 102 -87 13 41 45 14 8 14 13 35 35 14 14 24 -0.08 49 0 0 13 44 1 21 12 38.9 14 102 -86 13 30 46 13 57 16 13 24 36 14 3 26 -0.08 50 0 0 13 32 52 21 12 41.7 15 102 -85 13 19 37 13 46 8 13 13 27 13 52 19 -0.08 51 0 0 13 21 34 21 12 44.6 16 102 -84 13 8 18 13 34 50 13 2 7 13 41 0 -0.08 52 0 0 13 10 5 21 12 47.7 17 103 -83 12 56 49 13 23 21 12 50 38 13 29 32 -0.08 53 0 0 12 58 26 21 12 51.0 18 103 -82 12 45 10 13 11 43 12 38 59 13 17 54 -0.08 54 0 0 12 46 38 21 12 54.5 19 103 -81 12 33 21 12 59 55 12 27 10 13 6 6 -0.08 55 0 0 12 34 40 21 12 58.2 20 103 -80 12 21 23 12 47 57 12 15 11 12 54 9 -0.08 56 0 0 12 22 33 21 13 2.1 21 104 -79 12 9 15 12 35 51 12 3 4 12 42 2 -0.08 57 0 0 12 10 16 21 13 6.2 22 104 -78 11 56 58 12 23 35 11 50 47 12 29 47 -0.08 58 0 0 11 57 51 21 13 10.5 23 104 -77 11 44 33 12 11 10 11 38 21 12 17 22 -0.08 59 0 0 11 45 17 21 13 15.0 24 104 -76 11 31 58 11 58 36 11 25 46 12 4 49 -0.08 60 0 0 11 32 35 21 13 19.7 25 104 -75 11 19 16 11 45 54 11 13 3 11 52 7 -0.08 61 0 0 11 19 44 21 13 24.6 26 105 -74 11 6 24 11 33 4 11 0 12 11 39 16 -0.08 62 0 0 11 6 45 21 13 29.6 27 105 -73 10 53 25 11 20 5 10 47 13 11 26 18 -0.08 63 0 0 10 53 39 21 13 34.9 28 105 -72 10 40 18 11 6 59 10 34 6 11 13 12 -0.08 64 0 0 10 40 24 21 13 40.4 29 105 -71 10 27 4 10 53 45 10 20 51 10 59 58 -0.08 65 0 0 10 27 3 21 13 46.0 30 106 -70 10 13 42 10 40 24 10 7 29 10 46 37 -0.08 66 0 0 10 13 34 21 13 51.8 31 106 -69 10 0 13 10 26 56 9 54 0 10 33 9 -0.08 67 0 0 9 59 59 21 13 57.9 32 106 -68 9 46 37 10 13 20 9 40 24 10 19 34 -0.08 68 0 0 9 46 16 21 14 4.1 33 106 -67 9 32 55 9 59 39 9 26 41 10 5 52 -0.08 69 0 0 9 32 28 21 14 10.5 34 106 -66 9 19 6 9 45 50 9 12 52 9 52 4 -0.08 70 0 0 9 18 34 21 14 17.0 35 107 -65 9 5 11 9 31 56 8 58 57 9 38 10 -0.08 71 0 0 9 4 33 21 14 23.8 36 107 -64 8 51 11 9 17 56 8 44 57 9 24 10 -0.08 72 0 0 8 50 28 21 14 30.8 37 107 -63 8 37 5 9 3 51 8 30 51 9 10 5 -0.08 73 0 0 8 36 17 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- 6 56 44 - 6 30 32 - 7 2 50 - 6 24 26 -0.09 -162 0 0 - 6 37 27 21 33 18.1 10 263 67 - 6 50 33 - 6 24 21 - 6 56 39 - 6 18 15 -0.09 -161 0 0 - 6 31 3 21 33 20.0 9 263 68 - 6 44 9 - 6 17 56 - 6 50 15 - 6 11 50 -0.09 -160 0 0 - 6 24 25 21 33 21.7 8 263 69 - 6 37 32 - 6 11 19 - 6 43 38 - 6 5 12 -0.09 -159 0 0 - 6 17 35 21 33 23.3 7 263 70 - 6 30 42 - 6 4 28 - 6 36 48 - 5 58 21 -0.09 -158 0 0 - 6 10 32 21 33 24.6 6 263 70 - 6 23 39 - 5 57 25 - 6 29 46 - 5 51 18 -0.09 -157 0 0 - 6 3 16 21 33 25.7 5 263 71 - 6 16 24 - 5 50 9 - 6 22 30 - 5 44 2 -0.09 -156 0 0 - 5 55 48 21 33 26.7 4 262 72 - 6 8 56 - 5 42 40 - 6 15 3 - 5 36 33 -0.09 -155 0 0 - 5 48 7 21 33 27.4 3 262 73 - 6 1 15 - 5 34 59 - 6 7 22 - 5 28 52 -0.09 -154 0 0 - 5 40 15 21 33 28.0 2 262 74 - 5 53 23 - 5 27 6 - 5 59 30 - 5 20 58 -0.09 -153 0 0 - 5 32 10 21 33 28.3 1 262 75 - 5 45 18 - 5 19 1 - 5 51 26 - 5 12 53 -0.08 -152 0 0 - 5 23 53 21 33 28.5 0 262 75 - 5 37 2 - 5 10 44 - 5 43 9 - 5 4 36 -0.06 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: TYC 5565-00030-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 48 07.1834 DE: -07 50 46.139 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 48 07.1835 DE: -07 50 46.139 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.300) * V mag [mag]: 9.1 * B mag [mag]: 9.8 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (742) Edisona asteroid class: approx. diameter [km]: 47 approx. diameter ["]: 0.022 distance from Earth [AU]: 2.95660 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 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): 0.016", 0.002", 118.387° remarks: * orbital elements for (742)Edisona : Mean anomaly = 224.3833791373 deg Arg. of pericenter = 283.8940228416 deg Long. of node = 64.1344625513 deg Inclination = 11.2019185755 deg Eccentricity = 0.1147276150 Semimajor axis = 3.0142321312 AU Perihelion dist = 2.6684164678 AU Mag: H = 9.51, G = 0.15 Epoch of elements : MJD 60351.89090667 TDT (2024 Feb 11.8909) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr24,4.78,2024,2,11,21.381758,0.017081,0.091445,5.555639,-1.051147,-0.005726,0.001622,0.000000,0.000000 120.1831,-7.9480,-137.17,-13.97,False TYC 5565-00030-1,14.80199537,-7.8461496,9.81,9.09,8.70,0.2,0,,14.82338729,-7.9480018,6.26,6.19,0,0,0 742,Edisona,15.34,47.836,2.9566,0,0,1.112,-3.13,,2.4,0 0,224.2156,2024,2,11,283.8940,64.1345,11.2019,0.11473,3.01423,2.66842,9.50,5.0,0.15 1.233,0.0163,0.0016,118,0.0052,Known errors,2.06,0,-1,-1 20240211_0030-1,60138.17 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 03:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org