IOTA/IOTA-ES occultation update for (79) Eurynome / TYC 5750-02144-1 event on 2023 Jun 06, 09:08 UT Visible from South America Summary ------- On 2023 Jun 06 UT, the 67.3 km diameter asteroid (79) Eurynome will occult a 11.0 mag star in the constellation Sagittarius 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 1.52 mag to 12.25 mag (the magnitude of the asteroid) for at most 16.990 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 Jun 06, 08:41 - 2023 Jun 06, 09:35 * geocentric midpoint of event [JD]: 2460101.88076417 * magnitude of target star: 11.04 * magnitude drop [mag]: 1.52 * estimated maximum duration [s]: 16.990 * Moon: 93 % sunlit, 19° distance * Sun: 135° distance * rough path description: South America Additional comments ------------------- duplicated source flag The occultation path -------------------- * approximate projected width [km]: 68 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 2.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.001", 80°) * approx speed of asteroid's shadow [km/s]: 3.9606 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5750-02144-1 by 79 Eurynome on 2023 Jun 6 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 -179 0 0 30 18 58 9 34 46.9 0 106 -27 30 38 16 29 59 41 30 41 40 29 56 17 .... -178 0 0 30 3 42 9 34 46.6 1 107 -28 30 23 2 29 44 22 30 26 27 29 40 58 -0.04 -177 0 0 29 48 3 9 34 45.9 2 107 -29 30 7 26 29 28 42 30 10 51 29 25 17 -0.10 -176 0 0 29 32 3 9 34 44.7 3 108 -30 29 51 28 29 12 40 29 54 54 29 9 15 -0.12 -175 0 0 29 15 42 9 34 43.1 4 108 -30 29 35 9 28 56 16 29 38 35 28 52 51 -0.14 -174 0 0 28 58 59 9 34 41.2 5 109 -31 29 18 28 28 39 31 29 21 54 28 36 5 -0.15 -173 0 0 28 41 54 9 34 38.8 6 109 -32 29 1 26 28 22 24 29 4 52 28 18 58 -0.15 -172 0 0 28 24 29 9 34 36.0 7 110 -32 28 44 2 28 4 57 28 47 29 28 1 30 -0.16 -171 0 0 28 6 43 9 34 32.7 8 110 -33 28 26 18 27 47 9 28 29 46 27 43 42 -0.16 -170 0 0 27 48 36 9 34 29.1 9 111 -34 28 8 14 27 29 0 28 11 41 27 25 32 -0.17 -169 0 0 27 30 9 9 34 25.0 9 111 -34 27 49 49 27 10 31 27 53 17 27 7 3 -0.17 -168 0 0 27 11 22 9 34 20.4 10 111 -35 27 31 3 26 51 41 27 34 32 26 48 13 -0.17 -167 0 0 26 52 15 9 34 15.5 11 112 -36 27 11 58 26 32 32 27 15 27 26 29 4 -0.17 -166 0 0 26 32 48 9 34 10.1 12 112 -36 26 52 34 26 13 4 26 56 3 26 9 35 -0.17 -165 0 0 26 13 2 9 34 4.3 13 113 -37 26 32 50 25 53 16 26 36 20 25 49 47 -0.18 -164 0 0 25 52 57 9 33 58.0 14 113 -38 26 12 47 25 33 9 26 16 17 25 29 39 -0.18 -163 0 0 25 32 34 9 33 51.3 15 114 -38 25 52 25 25 12 43 25 55 56 25 9 14 -0.18 -162 0 0 25 11 52 9 33 44.2 16 114 -39 25 31 45 24 52 0 25 35 16 24 48 29 -0.18 -161 0 0 24 50 52 9 33 36.6 17 114 -40 25 10 47 24 30 58 25 14 18 24 27 27 -0.18 -160 0 0 24 29 34 9 33 28.5 18 115 -40 24 49 32 24 9 39 24 53 3 24 6 8 -0.18 -159 0 0 24 7 59 9 33 20.0 19 115 -41 24 27 58 23 48 2 24 31 30 23 44 31 -0.18 -158 0 0 23 46 8 9 33 11.1 20 116 -42 24 6 8 23 26 8 24 9 40 23 22 37 -0.18 -157 0 0 23 23 59 9 33 1.7 21 116 -42 23 44 1 23 3 58 23 47 34 23 0 26 -0.18 -156 0 0 23 1 34 9 32 51.9 22 117 -43 23 21 38 22 41 32 23 25 11 22 38 0 -0.18 -155 0 0 22 38 54 9 32 41.6 23 117 -43 22 58 59 22 18 50 23 2 32 22 15 18 -0.18 -154 0 0 22 15 58 9 32 30.9 24 117 -44 22 36 5 21 55 52 22 39 38 21 52 20 -0.19 -153 0 0 21 52 47 9 32 19.7 25 118 -45 22 12 56 21 32 40 22 16 29 21 29 7 -0.19 -152 0 0 21 29 22 9 32 8.1 26 118 -45 21 49 32 21 9 13 21 53 5 21 5 40 -0.19 -151 0 0 21 5 42 9 31 56.1 27 118 -46 21 25 54 20 45 33 21 29 27 20 41 59 -0.19 -150 0 0 20 41 49 9 31 43.6 27 119 -46 21 2 2 20 21 38 21 5 36 20 18 5 -0.19 -149 0 0 20 17 43 9 31 30.6 28 119 -47 20 37 57 19 57 31 20 41 31 19 53 57 -0.19 -148 0 0 19 53 24 9 31 17.2 29 120 -47 20 13 39 19 33 11 20 17 13 19 29 37 -0.19 -147 0 0 19 28 53 9 31 3.4 30 120 -48 19 49 9 19 8 38 19 52 43 19 5 4 -0.19 -146 0 0 19 4 10 9 30 49.2 31 120 -48 19 24 27 18 43 54 19 28 1 18 40 20 -0.19 -145 0 0 18 39 15 9 30 34.5 32 121 -49 18 59 33 18 18 59 19 3 8 18 15 24 -0.19 -144 0 0 18 14 10 9 30 19.4 33 121 -49 18 34 29 17 53 53 18 38 4 17 50 18 -0.19 -143 0 0 17 48 55 9 30 3.8 34 121 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Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: TYC 5750-02144-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 01 07.7488 DE: -13 51 20.513 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 01 07.7488 DE: -13 51 20.513 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (79) Eurynome asteroid class: approx. diameter [km]: 67 approx. diameter ["]: 0.051 distance from Earth [AU]: 1.81940 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#131 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): 0.008", 0.001", 80.253° remarks: * orbital elements for (79)Eurynome : Mean anomaly = 255.3676289241 deg Arg. of pericenter = 201.5804837879 deg Long. of node = 206.5218985260 deg Inclination = 4.6139050175 deg Eccentricity = 0.1908018562 Semimajor axis = 2.4442277747 AU Perihelion dist = 1.9778645782 AU Mag: H = 7.96, G = 0.25 Epoch of elements : MJD 60101.38055556 TDT (2023 Jun 06.3806) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1312023Apr24,16.99,2023,6,6,9.138340,0.058744,0.142578,-2.066864,0.851686,-0.003683,-0.001218,0.000001,0.000000 -90.9885,-13.7915,42.59,22.64,False TYC 5750-02144-1,20.01881909,-13.8556981,0.00,11.04,0.00,0.0,0,,20.04079035,-13.7914808,1.52,0.00,0,0,0 79,Eurynome,12.25,67.3,1.8194,0,0,-0.686,4.12,,3.4,0 0,255.2695,2023,6,6,201.5805,206.5219,4.6139,0.19080,2.44423,1.97786,7.99,5.0,0.15 1.088,0.0083,0.0009,80,0.0045,Known errors,-1.00,-1,-1,-1 20230606_2144-1,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:35 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org