IOTA/IOTA-ES occultation update for (1119) Euboea / TYC 6158-00739-1 event on 2023 Jul 25, 11:57 UT Visible from Australia Summary ------- On 2023 Jul 25 UT, the 31.3 km diameter asteroid (1119) Euboea will occult a 11.9 mag star in the constellation Libra 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 3.77 mag to 15.62 mag (the magnitude of the asteroid) for at most 2.630 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 Jul 25, 11:48 - 2023 Jul 25, 12:06 * geocentric midpoint of event [JD]: 2460150.99826150 * magnitude of target star: 11.88 * magnitude drop [mag]: 3.77 * estimated maximum duration [s]: 2.630 * Moon: 46 % sunlit, 17° distance * Sun: 102° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 31 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 1.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.001", 116°) * approx speed of asteroid's shadow [km/s]: 11.8943 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6158-00739-1 by 1119 Euboea on 2023 Jul 25 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 22 0 0 26 59 25 11 48 33.9 1 111 72 26 50 20 27 8 30 26 49 13 27 9 36 .... 23 0 0 26 38 27 11 48 34.1 2 111 72 26 29 21 26 47 34 26 28 14 26 48 41 0.07 24 0 0 26 16 58 11 48 34.4 3 112 71 26 7 50 26 26 6 26 6 43 26 27 13 0.04 25 0 0 25 54 56 11 48 34.9 3 112 70 25 45 46 26 4 6 25 44 39 26 5 13 0.02 26 0 0 25 32 21 11 48 35.5 4 113 69 25 23 10 25 41 33 25 22 2 25 42 40 0.02 27 0 0 25 9 14 11 48 36.3 5 113 68 25 0 1 25 18 28 24 58 54 25 19 35 0.01 28 0 0 24 45 35 11 48 37.3 6 114 68 24 36 20 24 54 50 24 35 12 24 55 57 0.01 29 0 0 24 21 23 11 48 38.4 7 114 67 24 12 6 24 30 39 24 10 58 24 31 47 0.01 30 0 0 23 56 38 11 48 39.7 8 114 66 23 47 19 24 5 57 23 46 11 24 7 5 0.00 31 0 0 23 31 21 11 48 41.1 9 115 65 23 22 0 23 40 41 23 20 52 23 41 49 0.00 32 0 0 23 5 31 11 48 42.8 10 115 64 22 56 9 23 14 53 22 55 0 23 16 2 0.00 33 0 0 22 39 9 11 48 44.6 12 116 63 22 29 45 22 48 33 22 28 36 22 49 42 0.00 34 0 0 22 12 14 11 48 46.6 13 116 62 22 2 49 22 21 40 22 1 40 22 22 49 0.00 35 0 0 21 44 48 11 48 48.8 14 116 61 21 35 20 21 54 15 21 34 11 21 55 25 0.00 36 0 0 21 16 49 11 48 51.2 15 117 60 21 7 20 21 26 18 21 6 10 21 27 28 0.00 37 0 0 20 48 18 11 48 53.8 16 117 59 20 38 47 20 57 50 20 37 37 20 58 59 0.00 38 0 0 20 19 16 11 48 56.6 17 118 58 20 9 43 20 28 49 20 8 33 20 29 59 0.00 39 0 0 19 49 43 11 48 59.5 18 118 57 19 40 8 19 59 17 19 38 58 20 0 27 0.00 40 0 0 19 19 38 11 49 2.7 19 118 56 19 10 1 19 29 14 19 8 51 19 30 25 0.00 41 0 0 18 49 2 11 49 6.1 20 119 55 18 39 24 18 58 41 18 38 13 18 59 51 0.00 42 0 0 18 17 56 11 49 9.7 21 119 54 18 8 16 18 27 36 18 7 5 18 28 47 0.00 43 0 0 17 46 20 11 49 13.4 22 119 53 17 36 38 17 56 2 17 35 27 17 57 13 0.00 44 0 0 17 14 15 11 49 17.4 23 120 52 17 4 31 17 23 58 17 3 20 17 25 9 0.00 45 0 0 16 41 40 11 49 21.6 24 120 51 16 31 54 16 51 25 16 30 43 16 52 37 0.00 46 0 0 16 8 37 11 49 26.1 26 120 50 15 58 49 16 18 24 15 57 38 16 19 35 0.00 47 0 0 15 35 5 11 49 30.7 27 120 49 15 25 16 15 44 54 15 24 5 15 46 6 0.00 48 0 0 15 1 7 11 49 35.5 28 121 48 14 51 16 15 10 57 14 50 4 15 12 9 0.00 49 0 0 14 26 41 11 49 40.6 29 121 47 14 16 49 14 36 33 14 15 37 14 37 45 0.00 50 0 0 13 51 50 11 49 45.9 30 121 46 13 41 56 14 1 43 13 40 44 14 2 55 0.00 51 0 0 13 16 33 11 49 51.4 31 121 45 13 6 38 13 26 28 13 5 26 13 27 40 0.00 52 0 0 12 40 52 11 49 57.1 32 122 44 12 30 56 12 50 48 12 29 43 12 52 1 0.00 53 0 0 12 4 47 11 50 3.1 34 122 43 11 54 50 12 14 45 11 53 37 12 15 58 0.00 54 0 0 11 28 20 11 50 9.2 35 122 41 11 18 21 11 38 19 11 17 8 11 39 32 0.00 55 0 0 10 51 31 11 50 15.6 36 122 40 10 41 31 11 1 31 10 40 17 11 2 44 -0.01 56 0 0 10 14 21 11 50 22.2 37 123 39 10 4 20 10 24 23 10 3 6 10 25 36 -0.01 57 0 0 9 36 52 11 50 29.0 38 123 38 9 26 49 9 46 55 9 25 36 9 48 8 -0.01 58 0 0 8 59 4 11 50 36.0 39 123 37 8 49 0 9 9 8 8 47 47 9 10 21 -0.01 59 0 0 8 20 59 11 50 43.2 41 123 36 8 10 54 8 31 3 8 9 40 8 32 17 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13 45 -0.02 170 0 0 -30 16 30 12 5 39.9 24 262 -76 -30 25 3 -30 7 57 -30 26 6 -30 6 55 -0.02 171 0 0 -30 9 11 12 5 43.2 23 261 -77 -30 17 45 -30 0 38 -30 18 48 -29 59 35 -0.02 172 0 0 -30 1 22 12 5 46.3 22 261 -77 -30 9 56 -29 52 48 -30 10 59 -29 51 45 -0.02 173 0 0 -29 53 2 12 5 49.4 21 260 -78 -30 1 37 -29 44 27 -30 2 40 -29 43 24 -0.02 174 0 0 -29 44 12 12 5 52.3 20 260 -78 -29 52 48 -29 35 36 -29 53 51 -29 34 33 -0.02 175 0 0 -29 34 52 12 5 55.2 19 259 -79 -29 43 28 -29 26 15 -29 44 31 -29 25 12 -0.02 176 0 0 -29 25 1 12 5 57.9 18 259 -79 -29 33 38 -29 16 23 -29 34 41 -29 15 20 -0.02 177 0 0 -29 14 39 12 6 0.5 17 258 -80 -29 23 18 -29 6 1 -29 24 21 -29 4 57 -0.02 178 0 0 -29 3 47 12 6 2.9 17 258 -80 -29 12 27 -28 55 7 -29 13 30 -28 54 4 -0.02 179 0 0 -28 52 24 12 6 5.3 16 257 -81 -29 1 5 -28 43 44 -29 2 8 -28 42 40 -0.02 180 0 0 -28 40 31 12 6 7.5 15 257 -81 -28 49 13 -28 31 49 -28 50 16 -28 30 46 -0.01 -179 0 0 -28 28 7 12 6 9.6 14 256 -81 -28 36 49 -28 19 24 -28 37 53 -28 18 20 -0.01 -178 0 0 -28 15 12 12 6 11.6 13 256 -81 -28 23 55 -28 6 28 -28 24 59 -28 5 24 -0.01 -177 0 0 -28 1 46 12 6 13.5 12 255 -81 -28 10 31 -27 53 1 -28 11 35 -27 51 57 -0.01 -176 0 0 -27 47 49 12 6 15.2 11 255 -81 -27 56 35 -27 39 3 -27 57 39 -27 37 59 -0.01 -175 0 0 -27 33 21 12 6 16.8 10 254 -81 -27 42 9 -27 24 34 -27 43 13 -27 23 30 -0.01 -174 0 0 -27 18 22 12 6 18.3 9 254 -80 -27 27 11 -27 9 34 -27 28 16 -27 8 29 -0.01 -173 0 0 -27 2 53 12 6 19.6 8 254 -80 -27 11 43 -26 54 3 -27 12 47 -26 52 58 -0.01 -172 0 0 -26 46 52 12 6 20.8 7 253 -80 -26 55 43 -26 38 0 -26 56 48 -26 36 56 0.00 -171 0 0 -26 30 20 12 6 21.9 6 253 -79 -26 39 12 -26 21 27 -26 40 17 -26 20 22 0.00 -170 0 0 -26 13 16 12 6 22.8 5 252 -79 -26 22 10 -26 4 23 -26 23 15 -26 3 17 0.00 -169 0 0 -25 55 42 12 6 23.6 5 252 -78 -26 4 37 -25 46 47 -26 5 43 -25 45 42 0.01 -168 0 0 -25 37 37 12 6 24.3 4 251 -77 -25 46 33 -25 28 40 -25 47 39 -25 27 34 0.01 -167 0 0 -25 19 0 12 6 24.8 3 251 -77 -25 27 58 -25 10 2 -25 29 4 -25 8 56 0.02 -166 0 0 -24 59 52 12 6 25.1 2 250 -76 -25 8 52 -24 50 53 -25 9 58 -24 49 47 0.05 -165 0 0 -24 40 13 12 6 25.3 1 250 -75 -24 49 15 -24 31 12 -24 50 20 -24 30 6 0.13 Uncertainty in time = +/- 2 secs Prediction of 2023 May 29.0 Data for the target star ------------------------ * name: TYC 6158-00739-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 45 18.1215 DE: -18 18 40.522 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 45 18.1213 DE: -18 18 40.522 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1119) Euboea asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.024 distance from Earth [AU]: 1.82030 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", 0.001", 115.819° remarks: * orbital elements for (1119)Euboea : Mean anomaly = 332.9179966804 deg Arg. of pericenter = 229.9626953836 deg Long. of node = 57.3493308294 deg Inclination = 7.8541886521 deg Eccentricity = 0.1546922754 Semimajor axis = 2.6116638623 AU Perihelion dist = 2.2076596368 AU Mag: H = 11.37, G = 0.15 Epoch of elements : MJD 60150.49819444 TDT (2023 Jul 25.4982) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr24,2.63,2023,7,25,11.958276,0.011999,0.022832,5.973239,-3.064550,0.004976,-0.001505,0.000000,0.000000 99.3423,-18.4109,2.27,19.64,False TYC 6158-00739-1,14.75503377,-18.3112563,0.00,11.88,0.00,0.0,0,,14.77698272,-18.4108893,3.77,0.00,0,0,0 1119,Euboea,15.62,31.3,1.8203,0,0,2.028,-14.81,,1.6,0 0,332.8017,2023,7,25,229.9627,57.3493,7.8542,0.15469,2.61166,2.20766,11.36,5.0,0.15 1.061,0.0163,0.0014,116,0.0014,Known errors,-1.00,-1,-1,-1 20230725_0739-1,60092.99 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 28, 23:40 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org