IOTA/IOTA-ES occultation update for (50862) 2000 FX73 / TYC 1881-00705-1 event on 2024 Sep 12, 17:29 UT Visible from Summary ------- On 2024 Sep 12 UT, the 13.782 km diameter asteroid (50862) 2000 FX73 will occult a 11.2 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.32 mag to 18.53 mag (the magnitude of the asteroid) for at most 0.580 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: 93 * date and approx. time of event: 2024 Sep 12, 17:24 - 2024 Sep 12, 17:33 * geocentric midpoint of event [JD]: 2460566.22860000 * magnitude of target star: 11.21 * magnitude drop [mag]: 7.32 * estimated maximum duration [s]: 0.580 * Moon: 65 % sunlit, 173° distance * Sun: 78° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 14 * 1 sigma uncertainty interval [path widths]: +/- 0.47 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.003", 59°) * approx speed of asteroid's shadow [km/s]: 23.6102 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1881-00705-1 by 50862 2000 FX73 on 2024 Sep 12 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 119 0 0 -18 18 29 17 24 42.3 1 63 -65 -18 22 42 -18 14 15 -18 26 39 -18 10 18 .... 120 0 0 -17 48 53 17 24 42.4 2 63 -64 -17 53 7 -17 44 39 -17 57 5 -17 40 40 -0.16 121 0 0 -17 18 40 17 24 42.6 3 62 -64 -17 22 55 -17 14 25 -17 26 54 -17 10 25 -0.14 122 0 0 -16 47 49 17 24 42.9 4 62 -63 -16 52 6 -16 43 33 -16 56 6 -16 39 33 -0.13 123 0 0 -16 16 22 17 24 43.3 5 62 -62 -16 20 39 -16 12 5 -16 24 41 -16 8 4 -0.13 124 0 0 -15 44 19 17 24 43.8 6 62 -62 -15 48 37 -15 40 1 -15 52 39 -15 35 58 -0.12 125 0 0 -15 11 39 17 24 44.4 7 61 -61 -15 15 58 -15 7 20 -15 20 1 -15 3 16 -0.12 126 0 0 -14 38 23 17 24 45.1 8 61 -60 -14 42 43 -14 34 2 -14 46 47 -14 29 58 -0.12 127 0 0 -14 4 31 17 24 45.9 9 61 -59 -14 8 52 -14 0 10 -14 12 57 -13 56 4 -0.12 128 0 0 -13 30 4 17 24 46.8 11 61 -59 -13 34 26 -13 25 42 -13 38 32 -13 21 35 -0.12 129 0 0 -12 55 2 17 24 47.8 12 60 -58 -12 59 25 -12 50 39 -13 3 32 -12 46 32 -0.12 130 0 0 -12 19 26 17 24 49.0 13 60 -57 -12 23 50 -12 15 2 -12 27 57 -12 10 54 -0.12 131 0 0 -11 43 16 17 24 50.2 14 60 -56 -11 47 41 -11 38 51 -11 51 49 -11 34 42 -0.12 132 0 0 -11 6 33 17 24 51.6 15 60 -55 -11 10 58 -11 2 7 -11 15 8 -10 57 57 -0.12 133 0 0 -10 29 17 17 24 53.1 16 60 -54 -10 33 44 -10 24 50 -10 37 54 -10 20 39 -0.12 134 0 0 - 9 51 30 17 24 54.7 17 59 -54 - 9 55 58 - 9 47 2 -10 0 9 - 9 42 50 -0.11 135 0 0 - 9 13 12 17 24 56.4 19 59 -53 - 9 17 40 - 9 8 43 - 9 21 53 - 9 4 31 -0.11 136 0 0 - 8 34 23 17 24 58.3 20 59 -52 - 8 38 53 - 8 29 54 - 8 43 6 - 8 25 41 -0.11 137 0 0 - 7 55 6 17 25 0.2 21 59 -51 - 7 59 36 - 7 50 36 - 8 3 50 - 7 46 22 -0.11 138 0 0 - 7 15 20 17 25 2.3 22 59 -50 - 7 19 52 - 7 10 49 - 7 24 6 - 7 6 34 -0.11 139 0 0 - 6 35 8 17 25 4.5 23 59 -49 - 6 39 40 - 6 30 36 - 6 43 55 - 6 26 20 -0.11 140 0 0 - 5 54 29 17 25 6.9 25 59 -48 - 5 59 2 - 5 49 56 - 6 3 18 - 5 45 40 -0.11 141 0 0 - 5 13 25 17 25 9.3 26 59 -47 - 5 17 59 - 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25 51.7 42 59 -33 4 3 9 4 12 30 3 58 46 4 16 53 -0.11 155 0 0 4 52 12 17 25 55.7 43 59 -32 4 47 32 4 56 52 4 43 8 5 1 16 -0.11 156 0 0 5 36 36 17 25 59.8 44 60 -31 5 31 56 5 41 17 5 27 32 5 45 40 -0.11 157 0 0 6 21 1 17 26 4.0 46 60 -30 6 16 20 6 25 41 6 11 57 6 30 5 -0.11 158 0 0 7 5 23 17 26 8.3 47 60 -29 7 0 43 7 10 4 6 56 19 7 14 28 -0.11 159 0 0 7 49 43 17 26 12.6 48 60 -28 7 45 2 7 54 23 7 40 38 7 58 47 -0.11 160 0 0 8 33 56 17 26 17.1 49 61 -26 8 29 16 8 38 37 8 24 52 8 43 1 -0.11 161 0 0 9 18 3 17 26 21.6 51 61 -25 9 13 23 9 22 44 9 9 0 9 27 7 -0.11 162 0 0 10 2 2 17 26 26.2 52 61 -24 9 57 21 10 6 42 9 52 58 10 11 5 -0.11 163 0 0 10 45 49 17 26 30.8 53 62 -23 10 41 9 10 50 29 10 36 46 10 54 53 -0.11 164 0 0 11 29 25 17 26 35.5 54 62 -22 11 24 45 11 34 5 11 20 22 11 38 28 -0.11 165 0 0 12 12 47 17 26 40.3 55 63 -21 12 8 7 12 17 26 12 3 44 12 21 49 -0.11 166 0 0 12 55 53 17 26 45.1 57 63 -20 12 51 14 13 0 32 12 46 52 13 4 54 -0.11 167 0 0 13 38 42 17 26 50.0 58 64 -19 13 34 3 13 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15 43 17 33 37.1 8 295 57 32 11 32 32 19 53 32 7 37 32 23 48 -0.13 - 65 0 0 31 50 36 17 33 37.7 7 296 57 31 46 25 31 54 48 31 42 29 31 58 44 -0.13 - 64 0 0 31 24 54 17 33 38.2 6 296 56 31 20 42 31 29 7 31 16 45 31 33 3 -0.14 - 63 0 0 30 58 37 17 33 38.6 5 297 56 30 54 24 31 2 50 30 50 26 31 6 48 -0.15 - 62 0 0 30 31 44 17 33 39.0 4 297 56 30 27 30 30 35 58 30 23 31 30 39 57 -0.16 - 61 0 0 30 4 15 17 33 39.3 3 298 56 30 0 0 30 8 31 29 56 1 30 12 30 -0.18 - 60 0 0 29 36 11 17 33 39.5 2 298 55 29 31 55 29 40 27 29 27 55 29 44 28 -0.21 - 59 0 0 29 7 32 17 33 39.6 1 299 55 29 3 15 29 11 49 28 59 14 29 15 50 -0.32 - 58 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 28 42 35 .. .. .. 28 46 37 .... Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1881-00705-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 09 18.9149 DE: +25 20 56.417 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 09 18.9150 DE: +25 20 56.417 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (50862) 2000 FX73 asteroid class: approx. diameter [km]: 14 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.43350 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#39 date of fit: 2023 Apr 25 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): 0.017", 0.003", 58.511° remarks: * orbital elements for (50862)2000 FX73 : Mean anomaly = 32.0436413035 deg Arg. of pericenter = 324.9690078753 deg Long. of node = 64.9550930564 deg Inclination = 30.5680494066 deg Eccentricity = 0.1000460170 Semimajor axis = 2.6484610123 AU Perihelion dist = 2.3834930368 AU Mag: H = 13.55, G = 0.15 Epoch of elements : MJD 60565.72859992 TDT (2024 Sep 12.7286) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#392023Apr25,0.58,2024,9,12,17.486400,-0.043504,0.088584,11.958450,5.880909,-0.005402,0.000142,0.000000,0.000000 -161.7978,25.3454,-83.29,3.79,False TYC 1881-00705-1,6.15525410,25.3490047,11.79,11.21,10.90,0.0,0,,6.18057336,25.3454254,7.32,7.19,0,0,0 50862,2000 FX73,18.53,13.782,2.4335,0,0,3.189,21.25,,0.8,0 0,31.8770,2024,9,12,324.9690,64.9551,30.5680,0.10005,2.64846,2.38349,13.55,5.0,0.15 1.470,0.0173,0.0033,59,0.0037,Known errors,0.86,0,-1,-1 20240912_0705-1,60140.56 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:24 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org